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,{"id":64965,"text":"i1947A - 1990 - Geologic map and profiles of the north wall of the Snake River Canyon, Bliss, Hagerman, and Tuttle quadrangles, Idaho","interactions":[],"lastModifiedDate":"2016-08-23T10:01:25","indexId":"i1947A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1947","chapter":"A","title":"Geologic map and profiles of the north wall of the Snake River Canyon, Bliss, Hagerman, and Tuttle quadrangles, Idaho","docAbstract":"<p>The Snake River Plain is a broad, arcuate region of low relief that extends more than 300 mi across southern Idaho. The Snake River enters the plain near Idaho Falls and flows westward along the southern margin of the eastern Snake River Plain (fig. 1), a position mainly determined by the basaltic lava flows that erupted near the axis of the plain. The highly productive Snake River Plain aquifer north of the Snake River underlies most of the eastern plain. The aquifer is composed of basaltic rocks that are interbedded with fluvial and lacustrine sedimentary rocks. The top of the aquifer (water table) is typically less than 500 ft below the land surface, but is deeper than 1,000 ft in a few areas. The Snake River has excavated a canyon into the nearly flat-lying basaltic and sedimentary rocks of the eastern Snake River Plain between Milner Dam and King Hill (fig. 2), a distance of almost 90 mi. For much of its length the canyon wall as springs of variable size, spacing, and altitude. Geologic controls on springs are of importance because nearly 60 percent of the aquifer's discharge occurs as spring flow along this reach of the canyon. This report is one of several that describes the geologic occurrence of springs along the northern wall of the Snake River canyon from Milner Dam to King Hill (fig. 1). To understand the local geologic controls on springs, the Water Resources Division of the U.S. Geological Survey initiated a geologic mapping project as part of their Snake River Plain Regional Aquifer System-Analysis Program. Objectives of the project were (1) to prepare a geologic map of a strip of land immediately north of the Snake River canyon, (2) to map the geology of the north canyon wall in profile, (3) to locate spring occurrences along the north side of the Snake River between Milner Dam and King Hill, and (4) to estimate spring discharge from the north wall of the canyon.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Denver, CO","doi":"10.3133/i1947A","usgsCitation":"Covington, H., and Weaver, J.N., 1990, Geologic map and profiles of the north wall of the Snake River Canyon, Bliss, Hagerman, and Tuttle quadrangles, Idaho: U.S. Geological Survey IMAP 1947, 48.02 x 39.92 inches, https://doi.org/10.3133/i1947A.","productDescription":"48.02 x 39.92 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":343,"text":"Idaho Water Science Center","active":true,"usgs":true}],"links":[{"id":189032,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/i1947A.GIF"},{"id":327545,"rank":701,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/1947a/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":107200,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_10021.htm","linkFileType":{"id":5,"text":"html"},"description":"10021"}],"scale":"24000","datum":"National Geodetic Vertical Datum of 1929","country":"United States","state":"Idaho","otherGeospatial":"Bliss Quadrangles, Hagerman Quadrangles, Snake River Canyon, Tuttle Quadrangles","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -115.0,42.75 ], [ -115.0,43.0 ], [ -114.5,43.0 ], [ -114.5,42.75 ], [ -115.0,42.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b15e4b07f02db6a489b","contributors":{"authors":[{"text":"Covington, H. R.","contributorId":92671,"corporation":false,"usgs":true,"family":"Covington","given":"H. R.","affiliations":[],"preferred":false,"id":272436,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Weaver, Jean N.","contributorId":65099,"corporation":false,"usgs":true,"family":"Weaver","given":"Jean","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":272435,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":38490,"text":"pp1403E - 1990 - Hydrology of the Floridan aquifer system in east-central Florida","interactions":[],"lastModifiedDate":"2025-04-17T18:30:59.947396","indexId":"pp1403E","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1403","chapter":"E","title":"Hydrology of the Floridan aquifer system in east-central Florida","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1403E","usgsCitation":"Tibbals, C.H., 1990, Hydrology of the Floridan aquifer system in east-central Florida: U.S. Geological Survey Professional Paper 1403, 98 p., https://doi.org/10.3133/pp1403E.","productDescription":"98 p.","costCenters":[],"links":[{"id":65174,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1403e/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":122100,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/1403e/report-thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"east-central Florida","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -80.25162688884144,\n              27.54975429185096\n            ],\n            [\n              -80.54510468568229,\n              28.62837937968102\n            ],\n            [\n              -81.23400519826654,\n              29.79377412606071\n            ],\n            [\n              -82.1051708688887,\n              29.740149469627994\n            ],\n            [\n              -81.31432543740222,\n              27.264549166238922\n            ],\n            [\n              -80.25162688884144,\n              27.54975429185096\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6adfbd","contributors":{"authors":[{"text":"Tibbals, C. H.","contributorId":76316,"corporation":false,"usgs":true,"family":"Tibbals","given":"C.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":219922,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":64967,"text":"i1947B - 1990 - Geologic map and profiles of the north wall of the Snake River Canyon, Pasadena Valley and Ticeska quadrangles, Idaho","interactions":[],"lastModifiedDate":"2016-08-23T10:15:10","indexId":"i1947B","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1947","chapter":"B","title":"Geologic map and profiles of the north wall of the Snake River Canyon, Pasadena Valley and Ticeska quadrangles, Idaho","docAbstract":"<p>The Snake River Plain is a broad, arcuate region of low relief that extends more than 300 mi across southern Idaho. The Snake River enters the plain near Idaho Falls and flows westward along the southern margin of the eastern Snake River Plain (fig. 1), a position mainly determined by the basaltic lava flows that erupted near the axis of the plain. The highly productive Snake River Plain aquifer north of the Snaked River underlies the most of the eastern plain. The aquifer is composed of basaltic ricks that are interbedded with fluvial and lacustrine sedimentary rocks. The top of the aquifer (water table) is typically less than 500 ft below the land surface, but is deeper than 1,000 ft in few areas. The Snake River had excavated a canyon into the nearly flat-lying basaltic and sedimentary rocks of the eastern Snake River Plain between Milner Dam and King Hill (fig. 2), a distance of almost 90 mi. For much of its length the canyon intersects the Snake River Plain aquifer, which discharges from the north canyon wall as springs of variable size, spacing, and altitude. Geologic controls on springs are of importance because nearly 60 percent of the aquifer's discharge occurs as spring flow along this reach of the canyon. This report is one of several that describes the geologic occurrence of springs along the northern wall of the Snake River canyon from Milner Dam to King Hill. To understand the local geologic controls on springs, the Water Resources Division of the U.S. Geological Survey initiated a geologic mapping project as part of their Snake River Plain Regional Aquifer System-Analysis Program. Objectives of the project were (1) to prepare a geologic map of a strip of land immediately north of the Snake River canyon, (2) to map the geology of the north canyon wall in profile, (3) to locate spring occurrences along the north side of the Snake River between Milner Dam and King Hill, and (4) to estimate spring discharge from the north wall of the canyon.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Denver, CO","doi":"10.3133/i1947B","usgsCitation":"Covington, H., and Weaver, J.N., 1990, Geologic map and profiles of the north wall of the Snake River Canyon, Pasadena Valley and Ticeska quadrangles, Idaho: U.S. Geological Survey IMAP 1947, 34.22 x 27.43 inches, https://doi.org/10.3133/i1947B.","productDescription":"34.22 x 27.43 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":343,"text":"Idaho Water Science Center","active":true,"usgs":true}],"links":[{"id":189034,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/i1947B.GIF"},{"id":327566,"rank":701,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/1947b/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":107201,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_10022.htm","linkFileType":{"id":5,"text":"html"},"description":"10022"}],"scale":"24000","country":"United States","state":"Idaho","otherGeospatial":"Pasadena Valley, Snake River Canyon, Ticeska Quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -115.0,42.89 ], [ -115.0,43.0 ], [ -115.18,43.0 ], [ -115.18,42.89 ], [ -115.0,42.89 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b15e4b07f02db6a489f","contributors":{"authors":[{"text":"Covington, H. R.","contributorId":92671,"corporation":false,"usgs":true,"family":"Covington","given":"H. R.","affiliations":[],"preferred":false,"id":272440,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Weaver, Jean N.","contributorId":65099,"corporation":false,"usgs":true,"family":"Weaver","given":"Jean","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":272439,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70207079,"text":"70207079 - 1990 - Fractal properties of tremor and gas piston events observed at Kilauea Volcano, Hawaii","interactions":[],"lastModifiedDate":"2024-05-03T13:34:25.48753","indexId":"70207079","displayToPublicDate":"1991-12-31T13:29:32","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Fractal properties of tremor and gas piston events observed at Kilauea Volcano, Hawaii","docAbstract":"<p><span>Studies the fractal properties of shallow volcanic tremor and gas piston events associated with magma degassing at Kilauea Volcano, Hawaii, using data from two dense short-baseline arrays of seismographs deployed near the active crater of Puu Oo on the east rift of the volcano. The existence of a categorically stable attractor characterizing both types of activities strongly suggests that the excitation mechanism of tremor is similar to that of gas piston events, which in turn are correlated with visual observations at the volcanic vent. Low values derived for the dimension of the attractor in phase space points to significant self-organization in the process of generation of tremor and offers general constraints on the dimensionality of attractors derived from models of acoustic emission associated with magma flow, vesiculation, and degassing. -from Authors</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/91JB00772","issn":"01480227","usgsCitation":"Chouet, B., and Shaw, H.R., 1990, Fractal properties of tremor and gas piston events observed at Kilauea Volcano, Hawaii: Journal of Geophysical Research, v. 96, no. 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 \"}}]}","volume":"96","issue":"B6","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"Chouet, B.","contributorId":68465,"corporation":false,"usgs":true,"family":"Chouet","given":"B.","affiliations":[],"preferred":false,"id":776774,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shaw, H. R.","contributorId":23952,"corporation":false,"usgs":true,"family":"Shaw","given":"H.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":776775,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70207637,"text":"70207637 - 1990 - Geology, geophysics, and geochronology of the Manson impact structure","interactions":[],"lastModifiedDate":"2020-06-08T12:18:51.927527","indexId":"70207637","displayToPublicDate":"1990-12-31T14:05:07","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1727,"text":"GSA Special Papers","active":true,"publicationSubtype":{"id":10}},"title":"Geology, geophysics, and geochronology of the Manson impact structure","docAbstract":"<p>A problem with the impact hypothesis for the Cretaceous/Tertiary (K/T) mass extinction is the apparent absence of an identifiable impact site. The Manson impact structure is a candidate site because of its size (the largest such structure recognized in the United States); in addition, the largest and most abundant shocked quartz grains at the K/T boundary are found relatively close by, and its age is indistinguishable from that of the K/T boundary.</p><p>The region of northwest central Iowa that contains the Manson impact structure is covered by Quaternary glacial deposits, which are underlain by Phanerozoic sedimentary rocks (mostly flat-lying carbonates) and Proterozoic red clastic, metamorphic, volcanic, and plutonic rocks. In a circular area about 22 mi (35 km) in diameter around Manson, Iowa, this normal sequence is absent or “disturbed.” Within the structure, three roughly concentric zones of rock associations have been identified: an outer zone of displaced strata, a zone of completely disrupted strata, and a central area in which basement igneous and metamorphic rocks have been uplifted at least 1,220 ft (4,000 m). Gravity, magnetic, and seismic refraction surveys readily identify the central uplift within the structure. Manson is established as an impact structure based on its circular shape, its central uplift, and the presence of shocked quartz within the granitic central uplift.</p><p>Paleontological evidence, a fission track age, and preliminary<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar dating all allowed a K/T boundary age for the Manson structure. Improved<span>&nbsp;</span><sup>40</sup>Ar/<sup>39</sup>Ar age spectra may be interpreted in terms of samples that were incompletely degassed during heating due to the Manson impact. An age of 65.7 ± 1.0 Ma was obtained, a value indistinguishable from that of the K/T boundary.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/SPE247-p207","usgsCitation":"Hartung, J.B., Kunk, M.J., and Anderson, R.R., 1990, Geology, geophysics, and geochronology of the Manson impact structure: GSA Special Papers, v. 247, p. 207-221, https://doi.org/10.1130/SPE247-p207.","productDescription":"15 p.","startPage":"207","endPage":"221","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":370912,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Iowa","county":"Calhoun County, Humboldt County, Pocahontas County, Webster County","otherGeospatial":"Manson impact structure","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-94.3989,42.2086],[-94.5147,42.2087],[-94.63,42.2091],[-94.7477,42.2094],[-94.861,42.2096],[-94.859,42.2959],[-94.8582,42.3841],[-94.8575,42.4736],[-94.9147,42.4739],[-94.9152,42.5602],[-94.9163,42.6461],[-94.9169,42.7334],[-94.9162,42.8203],[-94.9161,42.9085],[-94.7997,42.9079],[-94.6808,42.9076],[-94.5638,42.9073],[-94.4456,42.9068],[-94.3279,42.9076],[-94.2109,42.9069],[-94.0939,42.9071],[-93.9713,42.9066],[-93.9713,42.8184],[-93.9714,42.7307],[-93.9714,42.6434],[-93.972,42.5566],[-93.9727,42.4716],[-93.9323,42.4709],[-93.9324,42.3827],[-93.9324,42.2955],[-93.9319,42.2087],[-94.0087,42.2094],[-94.0515,42.2092],[-94.1673,42.2091],[-94.2843,42.2089],[-94.3989,42.2086]]]},\"properties\":{\"name\":\"Calhoun\",\"state\":\"IA\"}}]}","volume":"247","noUsgsAuthors":false,"publicationDate":"1990-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Hartung, Jack B.","contributorId":30365,"corporation":false,"usgs":true,"family":"Hartung","given":"Jack","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":778701,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kunk, Michael J. 0000-0003-4424-7825 mkunk@usgs.gov","orcid":"https://orcid.org/0000-0003-4424-7825","contributorId":200968,"corporation":false,"usgs":true,"family":"Kunk","given":"Michael","email":"mkunk@usgs.gov","middleInitial":"J.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":778702,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, R. R.","contributorId":80286,"corporation":false,"usgs":true,"family":"Anderson","given":"R.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":778703,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70207096,"text":"70207096 - 1990 - An apparent shear zone trending north‐northwest across the Mojave Desert into Owens Valley, eastern California","interactions":[],"lastModifiedDate":"2020-05-28T14:54:40.213787","indexId":"70207096","displayToPublicDate":"1990-12-06T08:55:56","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"An apparent shear zone trending north‐northwest across the Mojave Desert into Owens Valley, eastern California","docAbstract":"<p><span>Strain rates measured at four geodetic networks in eastern California situated between northern Owens Valley and the Transverse Ranges along a small circle drawn about the Pacific‐North America pole of rotation are remarkably consistent. Each exhibits 0.14 μrad/yr simple right‐lateral engineering‐shear‐strain accumulation across the local vertical plane tangent to the small circle. Local faults (</span><i>e.g.</i><span>, Owens Valley, Garlock, Helendale) traversing these networks are not as closely aligned with the vertical planes of maximum shear‐strain accumulation as is the local tangent to the small circle. A fifth network slightly east of the small circle shows no significant strain accumulation. Thus, a shear zone trending N35° W from near the eastern end of the big bend of the San Andreas fault to northern Owens Valley is indicated by these data. This corresponds to the Eastern California shear zone proposed on geological evidence by Dokka and Travis. The shear zone carries ∼8 mm/yr of the Pacific‐North America relative plate motion from the San Andreas fault north‐northwest across the Mojave Desert into Owens Valley and the northern Basin and Range province. The shear zone observed at the surface may be a manifestation of a through‐going subcrustal fault.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/GL017i012p02113","usgsCitation":"Savage, J.C., Lisowski, M., and Prescott, W., 1990, An apparent shear zone trending north‐northwest across the Mojave Desert into Owens Valley, eastern California: Geophysical Research Letters, v. 17, no. 12, p. 2113-2116, https://doi.org/10.1029/GL017i012p02113.","productDescription":"4 p.","startPage":"2113","endPage":"2116","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":370026,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"The Mojave Desert into Owens Valley, eastern California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -123.4423828125,\n              32.41706632846282\n            ],\n            [\n              -113.97216796875,\n              32.41706632846282\n            ],\n            [\n              -113.97216796875,\n              38.46219172306828\n            ],\n            [\n              -123.4423828125,\n              38.46219172306828\n            ],\n            [\n              -123.4423828125,\n              32.41706632846282\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"17","issue":"12","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Savage, James C. 0000-0002-5114-7673 jasavage@usgs.gov","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":2412,"corporation":false,"usgs":true,"family":"Savage","given":"James","email":"jasavage@usgs.gov","middleInitial":"C.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":776812,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lisowski, Michael 0000-0003-4818-2504 mlisowski@usgs.gov","orcid":"https://orcid.org/0000-0003-4818-2504","contributorId":637,"corporation":false,"usgs":true,"family":"Lisowski","given":"Michael","email":"mlisowski@usgs.gov","affiliations":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":776813,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Prescott, W.H.","contributorId":96337,"corporation":false,"usgs":true,"family":"Prescott","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":776814,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70206761,"text":"70206761 - 1990 - The late Cenozoic evolution of the Tuolumne River, central Sierra Nevada, California ","interactions":[],"lastModifiedDate":"2019-11-21T11:13:00","indexId":"70206761","displayToPublicDate":"1990-11-21T11:02:41","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"The late Cenozoic evolution of the Tuolumne River, central Sierra Nevada, California ","docAbstract":"<p>Erosional remnants of volcanic rock deposited in a lO-m.y.-old channel of the Tuolumne River permit its partial reconstruction. Projection of the reconstructed channel west to the Central Valley and east to the range crest, together with several assumptions about the position of the hinge line and changes in channel gradient, allows estimates of the amount of uplift at the range crest during the past 10 m.y. At Tioga Pass, this amounts to as much as 1,830 m, as compared to the 2,150 m estimated in an earlier study for Deadman Pass at the San Joaquin River 30 km to the south. Comparison of the geometry of these river systems leads to the conclusion that 10 m.y. ago an ancestral range of hills occupied the present site of the Sierran crest, and, although of relatively moderate relief, it was a barrier to westward drainage even before late Cenozoic uplift. At that time, the San Joaquin River was apparently the only river flowing westward across the range from well south of Mount Whitney north to Sonora Pass. The Tuolumne River evidently never extended east of this range. Comparison of the ancient channel with the modern channel of the Tuolumne River permits analysis of the later evolution of the river system and the development of Hetch Hetchy Valley and the Grand Canyon of the Tuolumne. At Rancheria Mountain, where the volcanic \"dam\" in the ancient channel was highest, the river was forced to shift laterally southward around the dam and adjacent to the volcanic infilling, and start its new channel in granitic bedrock. Near Rancheria Mountain, as much as 1,525 m of new channel incision has taken place in the past 10 m.y., and the modern channel is about 915 m lower than the abandoned channel. An undetermined amount of this downcutting was from glacial erosion. The Tuolumne river system provides no direct evidence for timing the onset of uplift, but the shape of the lO-m.y.-old channel at Rancheria Mountain suggests that uplift had been underway for some time before the volcanic infilling. This timing is compatible with evidence from the upper San Joaquin River. Hetch Hetchy Valley on the Tuolumne is a much \"fresher\" glaciated valley than is Yosemite Valley. Hetch Hetchy was filled to the brim with glacial ice as recently as 15,000-20,000 yr ago (Tioga glaciation), whereas Yosemite Valley probably has not been filled for 750,000 yr or more (Sherwin glaciation). Thus the upper reaches of Yosemite Valley cliffs have been shaped by spalling rather than by glacial scour and are much more irregular than those in Hetch Hetchy. </p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1990)102<0102:TLCEOT>2.3.CO;2","usgsCitation":"Huber, N., 1990, The late Cenozoic evolution of the Tuolumne River, central Sierra Nevada, California : GSA Bulletin, v. 102, no. 1, p. 102-115, https://doi.org/10.1130/0016-7606(1990)102<0102:TLCEOT>2.3.CO;2.","productDescription":"14 p.","startPage":"102","endPage":"115","costCenters":[],"links":[{"id":369383,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sierra Nevadas","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -120.00,\n             38.00\n            ],\n            [\n              -119.00,\n              38.00\n            ],\n            [\n              -119.00,\n              37.30\n            ],\n            [\n              -120.00,\n              37.30\n            ],\n            [\n              -120.00,\n              38.00\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"102","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Huber, N.K.","contributorId":73610,"corporation":false,"usgs":true,"family":"Huber","given":"N.K.","affiliations":[],"preferred":false,"id":775701,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70198217,"text":"70198217 - 1990 - The 40Ar/39Ar thermochronology of the eastern Mojave Desert, California, and adjacent western Arizona with implications for the evolution of metamorphic core complexes","interactions":[],"lastModifiedDate":"2018-08-29T08:24:50","indexId":"70198217","displayToPublicDate":"1990-11-10T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"displayTitle":"The <sup>40</sup>Ar/<sup>39</sup>Ar thermochronology of the eastern Mojave Desert, California, and adjacent western Arizona with implications for the evolution of metamorphic core complexes","title":"The 40Ar/39Ar thermochronology of the eastern Mojave Desert, California, and adjacent western Arizona with implications for the evolution of metamorphic core complexes","docAbstract":"<p><span>Mesozoic thickening and Cenozoic extension resulted in the juxtaposition of upper and middle crustal rocks in the eastern Mojave Desert, southeastern California and western Arizona. The application of&nbsp;</span><sup>40</sup><span>Ar/</span><sup>39</sup><span>Ar thermochronology to rocks in this region provides information about the timing and nature of thrusting, plutonism, metamorphism, denudation, and detachment faulting. The<span>&nbsp;</span></span><sup>40</sup><span>Ar/</span><sup>39</sup><span>Ar ages of 175 to 125 Ma from the Clipper, Piute, Turtle, Mohave, Bill Williams, and Hualapai Mountains are interpreted to be the result of a middle Mesozoic thermal event(s) caused by crustal thickening. The<span>&nbsp;</span></span><sup>40</sup><span>Ar/</span><sup>39</sup><span>Ar data from the Clipper and Piute Mountains suggest that this thermal event was followed by a period of cooling at rates of 1°–5°C/m.y. Orogenesis culminated during the Late Cretaceous when rocks exposed in the Old Woman‐Piute, Chemehuevi, and Sacramento Mountains attained temperatures &gt;500°C which reset the K–Ar systems of minerals from Proterozoic rocks. High‐grade metamorphism in the Old Woman Mountains area was caused by the intrusion of the Old Woman‐Piute batholith at 73±1 Ma. Cooling rates following batholith emplacement in the Old Woman Mountains were ∼100°C/m.y. between 73 and 70 Ma and 5°–10°C/m.y. from 70 to ∼30 Ma. Between 65 and 25 Ma the entire eastern Mojave Desert underwent a period of cooling at a rate of 2°–10°C/m.y. By 30 Ma, rocks exposed in the Old Woman‐Piute, Marble, Ship, Clipper, and Turtle Mountains were below ∼100°C. The<span>&nbsp;</span></span><sup>40</sup><span>Ar/</span><sup>39</sup><span>Ar ages from the Sacramento Mountains suggest that mylonitization caused by the onset of regional extension occurred at 23±1 Ma. When extension started in the Chemehuevi Mountains, rocks exposed in the southwestern and northeastern portions of footwall to the Chemehuevi detachment fault were at ∼180°C and ∼350°C, respectively. This suggests that the exposed part of the Chemehuevi detachment fault initiated at a dip of 5°–30° or as a series of higher‐angle faults that cut to a depth of 10–12 km and were later rotated to their present dip. Unroofing of the footwalls to detachment faults in the Sacramento and Chemehuevi Mountains resulted in average cooling rates of 10°–50°C/m.y. between 22 and 15 Ma.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB095iB12p20005","usgsCitation":"Foster, D., Harrison, T., Miller, C.F., and Howard, K.A., 1990, The 40Ar/39Ar thermochronology of the eastern Mojave Desert, California, and adjacent western Arizona with implications for the evolution of metamorphic core complexes: Journal of Geophysical Research B: Solid Earth, v. 95, no. B12, p. 20005-20024, https://doi.org/10.1029/JB095iB12p20005.","productDescription":"20 p.","startPage":"20005","endPage":"20024","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":355858,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mojave Desert","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -116.62536621093749,\n              33.93880275084578\n            ],\n            [\n              -113.895263671875,\n              33.93880275084578\n            ],\n            [\n              -113.895263671875,\n              35.652832827451654\n            ],\n            [\n              -116.62536621093749,\n              35.652832827451654\n            ],\n            [\n              -116.62536621093749,\n              33.93880275084578\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"95","issue":"B12","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5c1127e1e4b034bf6a81ff8e","contributors":{"authors":[{"text":"Foster, D.A.","contributorId":82865,"corporation":false,"usgs":true,"family":"Foster","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":740598,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harrison, T.M.","contributorId":60788,"corporation":false,"usgs":true,"family":"Harrison","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":740599,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, C. F.","contributorId":89971,"corporation":false,"usgs":true,"family":"Miller","given":"C.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":740600,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Howard, Keith A. 0000-0002-6462-2947 khoward@usgs.gov","orcid":"https://orcid.org/0000-0002-6462-2947","contributorId":3439,"corporation":false,"usgs":true,"family":"Howard","given":"Keith","email":"khoward@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":740601,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70016086,"text":"70016086 - 1990 - Forecasting damaging earthquakes in the central and eastern United States","interactions":[],"lastModifiedDate":"2025-09-19T16:34:03.20957","indexId":"70016086","displayToPublicDate":"1990-09-21T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Forecasting damaging earthquakes in the central and eastern United States","docAbstract":"<p><span>Analysis of seismograph network data, earthquake catalogs from 1727 to 1982, and paleoseismic data for the central and eastern United States indicate that the Poisson probability of a damaging earthquake (magnitude ≥ 6.0) occurring during the next 30 years is at a moderate to high level (0.4 to 0.6). When differences in seismic wave attenuation are taken into account, the central and eastern United States has approximately two-thirds the likelihood of California to produce an earthquake with comparable damage area and societal impact within the next 30 years.</span></p>","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.249.4975.1412","issn":"00368075","usgsCitation":"Nishenko, S., and Bollinger, G.A., 1990, Forecasting damaging earthquakes in the central and eastern United States: Science, v. 249, no. 4975, p. 1412-1416, https://doi.org/10.1126/science.249.4975.1412.","productDescription":"5 p.","startPage":"1412","endPage":"1416","costCenters":[],"links":[{"id":222832,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"central and eastern United States","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -104.84571982401295,\n              48.91920183103571\n            ],\n            [\n              -104.52988709899759,\n              33.35049856633009\n            ],\n            [\n              -78.50922763098463,\n              23.30091419503323\n            ],\n            [\n              -65.8790895516104,\n              44.13058310831227\n            ],\n            [\n              -67.89999562895278,\n              47.4303182742851\n            ],\n            [\n              -104.84571982401295,\n              48.91920183103571\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"249","issue":"4975","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1315e4b0c8380cd544f9","contributors":{"authors":[{"text":"Nishenko, S.P.","contributorId":8072,"corporation":false,"usgs":true,"family":"Nishenko","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":372509,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bollinger, G. A.","contributorId":55809,"corporation":false,"usgs":true,"family":"Bollinger","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":372510,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70016381,"text":"70016381 - 1990 - The Yucca Mountain project: Another perspective","interactions":[],"lastModifiedDate":"2023-10-27T11:00:34.711421","indexId":"70016381","displayToPublicDate":"1990-09-01T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5925,"text":"Environmental Science and Technology","active":true,"publicationSubtype":{"id":10}},"title":"The Yucca Mountain project: Another perspective","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"American Chemical Society","doi":"10.1021/es00079a602","usgsCitation":"Winograd, I.J., 1990, The Yucca Mountain project: Another perspective: Environmental Science and Technology, v. 24, no. 9, p. 1291-1293, https://doi.org/10.1021/es00079a602.","productDescription":"3 p.","startPage":"1291","endPage":"1293","numberOfPages":"3","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":222850,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Yucca Mountain","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -116.48254394531249,\n              36.91352904330221\n            ],\n            [\n              -116.43602371215822,\n              36.91352904330221\n            ],\n            [\n              -116.43602371215822,\n              36.95757376878687\n            ],\n            [\n              -116.48254394531249,\n              36.95757376878687\n            ],\n            [\n              -116.48254394531249,\n              36.91352904330221\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"24","issue":"9","noUsgsAuthors":false,"publicationDate":"2003-07-29","publicationStatus":"PW","scienceBaseUri":"505ba992e4b08c986b32235d","contributors":{"authors":[{"text":"Winograd, Isaac J. ijwinogr@usgs.gov","contributorId":4643,"corporation":false,"usgs":true,"family":"Winograd","given":"Isaac","email":"ijwinogr@usgs.gov","middleInitial":"J.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":373330,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70242678,"text":"70242678 - 1990 - Seismicity in the twenty years preceding the Loma Prieta California Earthquake","interactions":[],"lastModifiedDate":"2023-04-12T14:36:01.582438","indexId":"70242678","displayToPublicDate":"1990-08-01T09:31:49","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Seismicity in the twenty years preceding the Loma Prieta California Earthquake","docAbstract":"<p><span>Persistent seismicity occurred at a low rate during at least the twenty years before the Loma Prieta earthquake along the 60 km-long rupture zone. The depth distribution of this seismicity forms a broad “U”-shape that delineates the previously locked rupture zone. Relocations of seismicity during the ten years before the earthquake relative to the Loma Prieta aftershocks show that this “U”-shaped distribution can be partitioned lengthwise into activity on two adjacent subparallel structures: a vertical fault beneath the San Andreas fault trace and an eastward-dipping blind fault beneath the Sargent fault trace. The 11–18 km deep, southwest-dipping part of the Loma Prieta rupture was not active during at least the preceding ten years. The slip geometry of intersecting fault structures in this zone could contribute to both the preparation process and the complexity of the rupture.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/GL017i009p01429","usgsCitation":"Olson, J.A., 1990, Seismicity in the twenty years preceding the Loma Prieta California Earthquake: Geophysical Research Letters, v. 17, no. 9, p. 1429-1432, https://doi.org/10.1029/GL017i009p01429.","productDescription":"4 p.","startPage":"1429","endPage":"1432","costCenters":[],"links":[{"id":415658,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Loma Prieta, San Andreas Fault","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -123.09556447211273,\n              38.21742166336415\n            ],\n            [\n              -123.09556447211273,\n              36.515910324603496\n            ],\n            [\n              -120.51330442738708,\n              36.515910324603496\n            ],\n            [\n              -120.51330442738708,\n              38.21742166336415\n            ],\n            [\n              -123.09556447211273,\n              38.21742166336415\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"17","issue":"9","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Olson, Jean A.","contributorId":107719,"corporation":false,"usgs":true,"family":"Olson","given":"Jean","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":869315,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":5222406,"text":"5222406 - 1990 - Habitat use by postfledging American black ducks in Maine and New Brunswick","interactions":[],"lastModifiedDate":"2024-11-27T17:32:45.569533","indexId":"5222406","displayToPublicDate":"1990-07-02T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Habitat use by postfledging American black ducks in Maine and New Brunswick","docAbstract":"<p>We examined habitat use by 112 postfledging American black ducks (<i>Anas rubripes</i>) in eastern Maine and southwestern New Brunswick from September through early December of 1985, 1986, and 1987. Ducks were captured on Moosehorn National Wildlife Refuge (NWR), Maine. Palustrine Emergent Wetland was the most preferred habitat type. Riverine habitats were avoided in September, but were used more than, or in proportion to, their availability in November as ice formed on lentic habitats. Black ducks used a greater variety of habitat types during the day than at night, when ducks used mostly large (&gt;30 ha) Emergent Wetland marshes. Managed impoundments of Moosehorn NWR were the most used wetlands (66% of all diurnal, 90% of all nocturnal locations). For black duck management, we propose maintaining large (30-50 ha) marshes containing dense emergent vegetation that are located near a complex of diverse wetland types.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3809658","usgsCitation":"Frazer, C., Longcore, J.R., and McAuley, D., 1990, Habitat use by postfledging American black ducks in Maine and New Brunswick: Journal of Wildlife Management, v. 54, no. 3, p. 451-459, https://doi.org/10.2307/3809658.","productDescription":"9 p.","startPage":"451","endPage":"459","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":199623,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"Maine","otherGeospatial":"Moosehorn National Wildlife Refuge","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -67.37107095587054,\n              45.14741637709096\n            ],\n            [\n              -67.37107095587054,\n              45.03895187532217\n            ],\n            [\n              -67.21080446649984,\n              45.03895187532217\n            ],\n            [\n              -67.21080446649984,\n              45.14741637709096\n            ],\n            [\n              -67.37107095587054,\n              45.14741637709096\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"54","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7ee4b07f02db6485f7","contributors":{"authors":[{"text":"Frazer, Catherine","contributorId":63899,"corporation":false,"usgs":true,"family":"Frazer","given":"Catherine","email":"","affiliations":[],"preferred":false,"id":336245,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Longcore, Jerry R.","contributorId":45447,"corporation":false,"usgs":true,"family":"Longcore","given":"Jerry","email":"","middleInitial":"R.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":false,"id":336244,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McAuley, Daniel G.","contributorId":346357,"corporation":false,"usgs":false,"family":"McAuley","given":"Daniel G.","affiliations":[{"id":37196,"text":"Retired USGS employee","active":true,"usgs":false}],"preferred":false,"id":336243,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":5222407,"text":"5222407 - 1990 - Recent trends in counts of migrant hawks from northeastern North America","interactions":[],"lastModifiedDate":"2024-11-29T16:53:15.990034","indexId":"5222407","displayToPublicDate":"1990-07-02T00:00:00","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Recent trends in counts of migrant hawks from northeastern North America","docAbstract":"<p>Using simple regression, pooled-sites route-regression, and nonparametric rank-trend analyses, we evaluated trends in counts of hawks migrating past 6 eastern hawk lookouts from 1972 to 1987. The indexing variable was the total count for a season. Bald eagle (<i>Haliaeetus leucocephalus</i>), peregrine falcon (<i>Falco peregrinus</i>), merlin (<i>F. columbarius</i>), osprey (<i>Pandion haliaetus</i>), and Cooper's hawk (<i>Accipiter cooperii</i>) counts increased using route-regression and nonparametric methods (P &lt; 0.05). Northern harrier (<i>Circus</i> <i>cyaneus</i>) counts increased based on the nonparametric method (P &lt; 0.01) but not the route-regression method (P &gt; 0.10). We found no consistent trends (P &gt; 0.10) in counts of sharp-shinned hawks (<i>A. striatus</i>), northern goshawks (<i>A. gentilis</i>) red-shouldered hawks (<i>Buteo lineatus)</i>, red-tailed hawks (<i>B. jamaicensis</i>), rough-legged hawsk (<i>B. lagopus</i>), and American kestrels (<i>F. sparverius</i>). Broad-winged hawk (<i>B. platypterus</i>) counts declined (P &lt; 0.05) based on the route-regression method. Empirical comparisons of our results with those for well-studied species such as the peregrine falcon, bald eagle, and osprey indicated agreement with nesting surveys. We suggest that counts of migrant hawks are a useful and economical method for detecting long-term trends in species across regions, particularly for species that otherwise cannot be easily surveyed.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3809660","usgsCitation":"Titus, K., and Fuller, M.R., 1990, Recent trends in counts of migrant hawks from northeastern North America: Journal of Wildlife Management, v. 54, no. 3, p. 463-470, https://doi.org/10.2307/3809660.","productDescription":"8 p.","startPage":"463","endPage":"470","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":194231,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Michigan, Minnesota, New Jersey, New York, Pennsylvania","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"MultiPolygon\",\"coordinates\":[[[[-88.684434,48.115785],[-88.447236,48.182916],[-89.022736,47.858532],[-89.255202,47.876102],[-88.684434,48.115785]]],[[[-83.880387,41.720089],[-86.824828,41.76024],[-86.24971,42.480212],[-86.226305,42.988284],[-86.540916,43.633158],[-86.25395,44.64808],[-86.066745,44.905685],[-85.780439,44.977932],[-85.540497,45.210169],[-85.641652,44.810816],[-85.520205,44.960347],[-85.477423,44.813781],[-85.355478,45.282774],[-84.91585,45.393115],[-85.110884,45.526285],[-84.94565,45.708621],[-85.011433,45.757962],[-84.204218,45.627116],[-84.095905,45.497298],[-83.488826,45.355872],[-83.316118,45.141958],[-83.435822,45.000012],[-83.277213,44.7167],[-83.335248,44.357995],[-83.890145,43.934672],[-83.909479,43.672622],[-83.618602,43.628891],[-83.227093,43.981003],[-82.915976,44.070503],[-82.617955,43.768596],[-82.423086,42.988728],[-82.509935,42.637294],[-82.648776,42.550401],[-82.630922,42.64211],[-82.780817,42.652232],[-83.431103,41.757457],[-83.880387,41.720089]]],[[[-88.116846,45.921703],[-90.120489,46.336852],[-90.344338,46.552087],[-89.790663,46.818469],[-88.982483,46.99883],[-88.400224,47.379551],[-87.816958,47.471998],[-87.730804,47.449112],[-88.349952,47.076377],[-88.462349,46.786711],[-88.167373,46.9588],[-87.915943,46.909508],[-87.619747,46.79821],[-87.366767,46.507303],[-86.850111,46.434114],[-86.188024,46.654008],[-84.964652,46.772845],[-84.969464,46.47629],[-84.177428,46.52692],[-84.097766,46.256512],[-84.247687,46.17989],[-83.931175,46.017871],[-83.63498,46.103953],[-83.49484,45.999541],[-84.345451,45.946569],[-84.656567,46.052654],[-84.820557,45.868293],[-85.047028,46.020603],[-85.528403,46.087121],[-85.663966,45.967013],[-86.278007,45.942057],[-86.687208,45.634253],[-86.532989,45.882665],[-86.92106,45.697868],[-87.018902,45.838886],[-87.612019,45.123377],[-87.727276,45.216129],[-87.648476,45.352243],[-87.860432,45.423504],[-87.831442,45.714938],[-88.131834,45.811312],[-88.116846,45.921703]]],[[[-92.204691,46.704041],[-92.29353,46.113824],[-92.869193,45.717568],[-92.646602,45.441635],[-92.807362,44.758909],[-91.410555,43.970892],[-91.244135,43.774667],[-91.243183,43.540309],[-96.453049,43.500415],[-96.452948,45.268925],[-96.835451,45.586129],[-96.587093,45.816445],[-96.559271,46.058272],[-96.789572,46.639079],[-96.851293,47.589264],[-97.139497,48.153108],[-97.108655,48.691484],[-97.238387,48.982631],[-95.153711,48.998903],[-95.153314,49.384358],[-94.974286,49.367738],[-94.555835,48.716207],[-93.741843,48.517347],[-92.984963,48.623731],[-92.634931,48.542873],[-92.698824,48.494892],[-92.341207,48.23248],[-92.066269,48.359602],[-91.542512,48.053268],[-90.88548,48.245784],[-90.703702,48.096009],[-89.489226,48.014528],[-90.735927,47.624343],[-92.058888,46.809938],[-92.025789,46.710839],[-92.204691,46.704041]]],[[[-79.761951,42.26986],[-78.868556,42.770258],[-79.061388,43.251349],[-78.370221,43.376505],[-77.577223,43.243263],[-76.794708,43.309632],[-76.235834,43.529256],[-76.133697,43.940356],[-76.360306,44.070907],[-76.312647,44.199044],[-75.26825,44.855119],[-74.868663,45.001274],[-73.343124,45.01084],[-73.430325,43.590532],[-73.247631,43.51924],[-73.276421,42.746019],[-73.508142,42.086257],[-73.482709,41.21276],[-73.727775,41.100696],[-73.782577,40.837601],[-72.635374,40.990536],[-72.245348,41.161217],[-72.273657,41.051533],[-72.116368,40.999796],[-71.869558,41.075046],[-73.23914,40.6251],[-73.934512,40.545175],[-74.143387,40.641903],[-74.209788,40.447407],[-73.995683,40.468707],[-73.971381,40.371709],[-74.141733,39.689435],[-74.933571,38.928519],[-74.905181,39.174945],[-75.165979,39.201842],[-75.542894,39.470447],[-75.481242,39.829112],[-75.799563,39.721882],[-80.519342,39.721403],[-80.519345,41.929168],[-79.761951,42.26986]]],[[[-74.144428,40.53516],[-74.219787,40.502603],[-74.120186,40.642201],[-74.144428,40.53516]]]]},\"properties\":{\"name\":\"Michigan\",\"nation\":\"USA  \"}}]}","volume":"54","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a72e4b07f02db643014","contributors":{"authors":[{"text":"Titus, Kimberly","contributorId":149923,"corporation":false,"usgs":false,"family":"Titus","given":"Kimberly","email":"","affiliations":[{"id":7058,"text":"Alaska Department of Fish and Game","active":true,"usgs":false}],"preferred":false,"id":336247,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fuller, Mark R. 0000-0001-7459-1729 mark_fuller@usgs.gov","orcid":"https://orcid.org/0000-0001-7459-1729","contributorId":2296,"corporation":false,"usgs":true,"family":"Fuller","given":"Mark","email":"mark_fuller@usgs.gov","middleInitial":"R.","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":336246,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70124342,"text":"70124342 - 1990 - Winter use of douglas-fir forests by Blue Grouse in Colorado","interactions":[],"lastModifiedDate":"2014-09-11T13:07:26","indexId":"70124342","displayToPublicDate":"1990-07-01T13:04:59","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Winter use of douglas-fir forests by Blue Grouse in Colorado","docAbstract":"We studied winter use of Douglas-fir (<i>Pseudotsuga menziesii</i>) forests by blue grouse (<i>Dendragapus obscurus</i>) from 1981 to 1983 at 2 study areas in northcentral Colorado. Comparisons of used and available stands indicated grouse were concentrated spatially, but there were no consistent differences related to basal area of tree species, conifer stem densities, and topography that were common to both areas. Blue grouse used dense (2,000 stems/ha) second growth (40-75 yr old), open to dense (200-1,900 stems/ha) mature (100-200 yr old), and open (<100 stems/ha) old-growth (200-600 yr old) stands. Stands used were composed of Douglas-fir alone or in association with subalpine fir (<i>Abies lasiocarpa</i>), Engelmann spruce (<i>Picea engelmannii</i>), lodgepole pine (<i>Pinus contorta</i>), limber pine (<i>P. flexilis</i>), Rocky Mountain juniper (<i>Juniperus scopulorum</i>), and quaking aspen (<i>Populus tremuloides</i>). Grouse used stands on mesic northern and eastern aspects, on xeric southern and western aspects, at elevations of 2,530-2,960 m, and on slopes of 1-45°. Preferential use (P < 0.05) of Douglas-fir trees occurred within stands that had an abundance of limber pine (use = availability) and subalpine fir (use < availability). Large Douglas-fir (20-90 cm dbh) were preferred (P < 0.05) within stands that had an abundance of smaller (≤15 cm dbh) trees. Both sexes used similar trees.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wildlife Society","publisherLocation":"Washington, D.C.","doi":"10.2307/3809661","usgsCitation":"Cade, B.S., and Hoffman, R., 1990, Winter use of douglas-fir forests by Blue Grouse in Colorado: Journal of Wildlife Management, v. 54, no. 3, p. 471-479, https://doi.org/10.2307/3809661.","productDescription":"9 p.","startPage":"471","endPage":"479","numberOfPages":"9","costCenters":[],"links":[{"id":293733,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":293732,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2307/3809661"}],"country":"United States","state":"Colorado","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -109.0603,36.9924 ], [ -109.0603,41.0034 ], [ -102.0409,41.0034 ], [ -102.0409,36.9924 ], [ -109.0603,36.9924 ] ] ] } } ] }","volume":"54","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5412b9c2e4b0239f1986bb37","contributors":{"authors":[{"text":"Cade, Brian S. 0000-0001-9623-9849 cadeb@usgs.gov","orcid":"https://orcid.org/0000-0001-9623-9849","contributorId":1278,"corporation":false,"usgs":true,"family":"Cade","given":"Brian","email":"cadeb@usgs.gov","middleInitial":"S.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":500737,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hoffman, Richard W.","contributorId":93840,"corporation":false,"usgs":true,"family":"Hoffman","given":"Richard W.","affiliations":[],"preferred":false,"id":500738,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70210578,"text":"70210578 - 1990 - The Denali fault system and Alaska Range of Alaska: Evidence for underplated Mesozoic flysch from magnetotelluric surveys","interactions":[],"lastModifiedDate":"2020-06-10T17:16:45.077452","indexId":"70210578","displayToPublicDate":"1990-06-10T11:58:30","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"The Denali fault system and Alaska Range of Alaska: Evidence for underplated Mesozoic flysch from magnetotelluric surveys","docAbstract":"<p><span>Regional magnetotelluric surveys recently completed across the central and eastern Alaska Range of Alaska provide evidence for large volumes of conductive rocks beneath the core of the range. These conductive rocks may represent a formerly extensive, but now collapsed, Mesozoic flysch basin formed on the leading edge of the Talkeetna superterrane (amalgamated Wrangellia, Peninsular, and Alexander terranes). The docking of the Talkeetna superterrane caused large-scale oblique thrusting, folding, and metamorphism in the flysch basin, and formation of a megasuture along which the Cenozoic strike-slip Denali fault system developed. The deep magnetotelluric soundings and seismic reflection data suggest the possibility that the highly conductive rocks were tectonically emplaced beneath the thin crystalline sheet constituting the southern Yukon-Tanana terrane over a broad region of the Alaska Range. The conductive rocks are locally correlated with surface outcrops of Mesozoic black shales that are part of Upper Jurassic and Cretaceous flysch but may be composed of Paleozoic carbonaceous shales as well. In either case, their extremely low resistivities make them a valuable marker horizon for tectonic studies. The conductive rocks are interpreted to extend to depths of greater than 20 km and were mapped north and northeast of the Denali fault for more than 50 km. The magnetotelluric surveys represent the first large-scale surveys done in Alaska, but the structures mapped are similar to those observed in large, compressed flysch basins in the eastern Alps and Carpathian Mountains of Europe. The results of these surveys bear on several key tectonic questions, including development of the ancestral Denali fault, and collapse and possible underplating of an extensive Mesozoic flysch system and associated igneous arc.</span></p>","language":"English","publisher":"GSA","doi":"10.1130/0016-7606(1990)102<0160:TDFSAA>2.3.CO;2","usgsCitation":"Stanley, W.D., Labson, V.F., Nokleberg, W.J., Csejtey, B., and Fisher, M.A., 1990, The Denali fault system and Alaska Range of Alaska: Evidence for underplated Mesozoic flysch from magnetotelluric surveys: GSA Bulletin, v. 102, no. 2, p. 160-173, https://doi.org/10.1130/0016-7606(1990)102<0160:TDFSAA>2.3.CO;2.","productDescription":"14 p.","startPage":"160","endPage":"173","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":375495,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Denali fault system","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -151.083984375,\n              54.826007999094955\n            ],\n            [\n              -131.8359375,\n              54.826007999094955\n            ],\n            [\n              -131.8359375,\n              63.31268278043484\n            ],\n            [\n              -151.083984375,\n              63.31268278043484\n            ],\n            [\n              -151.083984375,\n              54.826007999094955\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"102","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Stanley, W. D.","contributorId":86756,"corporation":false,"usgs":true,"family":"Stanley","given":"W.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":790657,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Labson, Victor F. 0000-0003-1905-1820 vlabson@usgs.gov","orcid":"https://orcid.org/0000-0003-1905-1820","contributorId":326,"corporation":false,"usgs":true,"family":"Labson","given":"Victor","email":"vlabson@usgs.gov","middleInitial":"F.","affiliations":[{"id":349,"text":"International Water Resources Branch","active":true,"usgs":true}],"preferred":true,"id":790658,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nokleberg, Warren J. 0000-0002-1574-8869 wnokleberg@usgs.gov","orcid":"https://orcid.org/0000-0002-1574-8869","contributorId":2077,"corporation":false,"usgs":true,"family":"Nokleberg","given":"Warren","email":"wnokleberg@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":790659,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Csejtey, Bela Jr.","contributorId":61008,"corporation":false,"usgs":true,"family":"Csejtey","given":"Bela","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":790660,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fisher, M. A.","contributorId":69972,"corporation":false,"usgs":true,"family":"Fisher","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":790661,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70221648,"text":"70221648 - 1990 - Eocene-Oligocene sea-level changes on the New Jersey coastal plain linked to the deep-sea record","interactions":[],"lastModifiedDate":"2021-06-26T02:51:52.148555","indexId":"70221648","displayToPublicDate":"1990-03-01T21:45:31","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Eocene-Oligocene sea-level changes on the New Jersey coastal plain linked to the deep-sea record","docAbstract":"<p><span>We use magnetostratigraphy and Sr-isotope stratigraphy to improve stratigraphic control for the Eocene to Oligocene of the New Jersey coastal plain (ACGS4 borehole). Magnetostratigraphy in many cases is complicated in outcrop sections of shallow-water (&lt;200 m paleodepth) sediments by low remanence and weathering; we minimize these problems by analyzing large samples obtained from the ACGS4 borehole and construct a firm magnetochronology for the early to middle Eocene. Sr-isotope stratigraphy confirms biostratigraphic evidence for a previously unknown uppermost Eocene to lowermost Oligocene unit and delineates a \"middle\" Oligocene hiatus that is unresolvabie using biostratigraphy alone. We recognize hiatuses and associated unconformities on the New Jersey margin near the lower Eocene/middle Eocene boundary, within the middle Eocene, and in the \"middle\" Oligocene and correlate these events with similar hiatuses observed in other continental-shelf, slope, and epicontinental settings. In addition, a hiatus probably occurred near the middle Eocene/upper Eocene boundary. We conclude that the interregional distribution of these Eocene-Oligocene hiatuses indicates a global cause: eustatic change.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1990)102%3C0331:EOSLCO%3E2.3.CO;2","usgsCitation":"Miller, K.G., Kent, D.V., Brower, A.N., Bybell, L.M., Feigenson, M.D., Olsson, R.K., and Poore, R.Z., 1990, Eocene-Oligocene sea-level changes on the New Jersey coastal plain linked to the deep-sea record: GSA Bulletin, v. 102, no. 34, p. 331-339, https://doi.org/10.1130/0016-7606(1990)102%3C0331:EOSLCO%3E2.3.CO;2.","productDescription":"9 p.","startPage":"331","endPage":"339","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":386769,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Jersey","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -74.7564697265625,\n              38.89530825492018\n            ],\n            [\n              -73.9874267578125,\n              39.74943369178247\n            ],\n            [\n              -73.916015625,\n              40.463666324587685\n            ],\n            [\n              -74.70703125,\n              40.50126945841645\n            ],\n            [\n              -75.5145263671875,\n              39.57182223734374\n            ],\n            [\n              -74.8883056640625,\n              38.839707613545144\n            ],\n            [\n              -74.7564697265625,\n              38.89530825492018\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"102","issue":"34","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Miller, Kenneth G.","contributorId":14260,"corporation":false,"usgs":true,"family":"Miller","given":"Kenneth","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":818342,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kent, Dennis V.","contributorId":63951,"corporation":false,"usgs":true,"family":"Kent","given":"Dennis","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":818343,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brower, Andrew N.","contributorId":260652,"corporation":false,"usgs":false,"family":"Brower","given":"Andrew","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":818344,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bybell, Laurel M. 0000-0002-4760-7542 lbybell@usgs.gov","orcid":"https://orcid.org/0000-0002-4760-7542","contributorId":1760,"corporation":false,"usgs":true,"family":"Bybell","given":"Laurel","email":"lbybell@usgs.gov","middleInitial":"M.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":818345,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Feigenson, Mark D.","contributorId":35198,"corporation":false,"usgs":true,"family":"Feigenson","given":"Mark","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":818346,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Olsson, Richard K.","contributorId":260653,"corporation":false,"usgs":false,"family":"Olsson","given":"Richard","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":818347,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Poore, Richard Z. rpoore@usgs.gov","contributorId":147454,"corporation":false,"usgs":true,"family":"Poore","given":"Richard","email":"rpoore@usgs.gov","middleInitial":"Z.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":818348,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70207899,"text":"70207899 - 1990 - Chapter 14: Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California","interactions":[],"lastModifiedDate":"2020-01-17T12:10:39","indexId":"70207899","displayToPublicDate":"1990-01-17T11:50:20","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1726,"text":"GSA Memoirs","active":true,"publicationSubtype":{"id":10}},"title":"Chapter 14: Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California","docAbstract":"<p>Metamorphosed silicic volcanic and hypabyssal rocks of middle Cretaceous (110 to 100 Ma) age occur in two roof pendants in the Kings Canyon area of the central Sierra Nevada. The metavolcanic remnants are similar in age to or are only slightly older than the voluminous enclosing batholithic rocks. Thus, high to surface levels of the batholith are implied for this region. This is interesting considering that deep-level (∼25 km) batholithic rocks of the same age as the metavolcanic rocks occur at the southern end of the range. Apparent structural continuity between these two regions suggests that the southern half of the range offers an oblique section through young (˜100 Ma) sialic crust.</p><p>The middle Cretaceous ages of the two volcanic sequences are indicated by U/Pb zircon and Rb/Sr bulk-rock isochron data. The two isotopic systems agree very closely with one another. Some of the U/Pb systems within the Boyden Cave pendant are discordant due to the inheritance or entrainment of Proterozoic zircon. This is a common phenomenon in volcanic or plutonic rocks erupted or emplaced within the Kings sequence metamorphic framework, a belt of distinct pendants with abundant continent-derived sedimentary protoliths. In conjunction with other petrochemical parameters, lavas and magmas of this framework domain are shown to be contaminated with sedimentary admixtures. The contaminated domain of the batholith reflects the bounds of the Kings sequence framework, which along its eastern margin probably represents a major pre-batholith to early batholith tectonic break.</p><p>The middle Cretaceous metavolcanic sequences were apparently built on two distinctly different early Mesozoic substrates separated by a major tectonic break. In the Boyden Cave pendant, the substrate may be represented by the shallow to deep-marine Kings sequence; to the east in the Oak Creek pendant, the substrate consists of a thick silicic ignimbrite sequence. In both areas the middle Cretaceous rocks and adjacent sequences share intense ductile deformation fabrics. Earlier views that considered these fabrics as an expression of Jurassic orogenic deformation are in error. Structural and age relations indicate that the fabrics developed between 105 and 100 Ma and during the medial phases of Cretaceous composite batholith growth.</p>","language":"English","publisher":"GSA","doi":"10.1130/MEM174-p251","usgsCitation":"Saleeby, J., Kistler, R.W., Longiaru, S., Moore, J.G., and Nokleberg, W.J., 1990, Chapter 14: Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California: GSA Memoirs, v. 174, p. 251-270, https://doi.org/10.1130/MEM174-p251.","productDescription":"20 p.","startPage":"251","endPage":"270","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":371353,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Central Sierra Nevada","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -119.2181396484375,\n              36.70806354647625\n            ],\n            [\n              -117.8173828125,\n              36.70806354647625\n            ],\n            [\n              -117.8173828125,\n              37.68382032669382\n            ],\n            [\n              -119.2181396484375,\n              37.68382032669382\n            ],\n            [\n              -119.2181396484375,\n              36.70806354647625\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"174","noUsgsAuthors":false,"publicationDate":"1990-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Saleeby, J.B.","contributorId":36148,"corporation":false,"usgs":true,"family":"Saleeby","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":779691,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kistler, R. W.","contributorId":115397,"corporation":false,"usgs":true,"family":"Kistler","given":"R.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":779692,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Longiaru, Samuel","contributorId":221676,"corporation":false,"usgs":false,"family":"Longiaru","given":"Samuel","email":"","affiliations":[],"preferred":false,"id":779693,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Moore, James G. 0000-0002-7543-2401 jmoore@usgs.gov","orcid":"https://orcid.org/0000-0002-7543-2401","contributorId":2892,"corporation":false,"usgs":true,"family":"Moore","given":"James","email":"jmoore@usgs.gov","middleInitial":"G.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":779694,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nokleberg, Warren J. 0000-0002-1574-8869 wnokleberg@usgs.gov","orcid":"https://orcid.org/0000-0002-1574-8869","contributorId":2077,"corporation":false,"usgs":true,"family":"Nokleberg","given":"Warren","email":"wnokleberg@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":779695,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70207897,"text":"70207897 - 1990 - Subsidence and volcanism of the Haleakala Ridge, Hawaii","interactions":[],"lastModifiedDate":"2020-10-01T18:26:55.125595","indexId":"70207897","displayToPublicDate":"1990-01-17T11:20:46","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"Subsidence and volcanism of the Haleakala Ridge, Hawaii","docAbstract":"<p>Side-looking sonar (GLORIA) mapping has revealed a series of four arcuate bands of high sonic backscatter on the crest of the Haleakala Ridge, a major rift-zone ridge extending 135 km east of the island of Maui. Dredge recovery indicates that the shallowest of these bands is a drowned coral reef, and the deeper bands are also inferred to be coral reefs. The reefs occur above a prominent submarine bench 1500–2500 m deep on the ridge (H-terrace) that marks the shoreline at the end of vigorous shield building of Haleakala volcano when lava flows ceased crossing and reworking the shoreline.</p><p>Since their growth these reefs have subsided as much as 2200 m and have tilted systematically about 20 m/km southward as a result of post-reef volcanic loading on the island of Hawaii, whose center of mass is about directly south of the Haleakala Ridge. The<span>&nbsp;</span><sup>234</sup>U/<sup>238</sup>U age of the dredged coral is<span>&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>750 &amp;#xB1; 13</mtext><mtext>ka</mtext></math>\"><span class=\"MJX_Assistive_MathML\">750 ± 13ka</span></span></span>, in reasonable agreement with an age of 850 ka for the underlying H terrace previously estimated from its relationship to other dated reefs to the southwest.</p><p>Basalt glass fragments dredged from the Haleakala Ridge below the H terrace are tholeiitic and contain high sulfur indicative of eruption in water deeper than 200 m. Basalt glass fragments associated with the reefs above the H terrace are dominantly tholeiitic and contain intermediate sulfur contents, indicative of subaqueous eruption in shallow, near-shore conditions. One alkalic glass fragment was recovered above the H terrace. These relations indicate that the morphologic end of shield building as recorded by construction of the H terrace was not accompanyed by a change from tholeiitic to alkalic basalt; instead tholeiite eruptions continued for some time before the erupted lava became alkalic.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0377-0273(90)90004-Y","usgsCitation":"Moore, J.G., Clague, D.A., Ludwig, K., and Mark, R.K., 1990, Subsidence and volcanism of the Haleakala Ridge, Hawaii: Journal of Volcanology and Geothermal Research, v. 42, no. 3, p. 273-284, https://doi.org/10.1016/0377-0273(90)90004-Y.","productDescription":"12 p.","startPage":"273","endPage":"284","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":371342,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","otherGeospatial":"Haleakala Ridge","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -158.5986328125,\n              18.542116654448996\n            ],\n            [\n              -154.5556640625,\n              18.542116654448996\n            ],\n            [\n              -154.5556640625,\n              22.004174972902003\n            ],\n            [\n              -158.5986328125,\n              22.004174972902003\n            ],\n            [\n              -158.5986328125,\n              18.542116654448996\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"42","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Moore, James G. 0000-0002-7543-2401 jmoore@usgs.gov","orcid":"https://orcid.org/0000-0002-7543-2401","contributorId":2892,"corporation":false,"usgs":true,"family":"Moore","given":"James","email":"jmoore@usgs.gov","middleInitial":"G.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":779684,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Clague, D. A.","contributorId":190950,"corporation":false,"usgs":false,"family":"Clague","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":779685,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ludwig, K.R.","contributorId":97112,"corporation":false,"usgs":true,"family":"Ludwig","given":"K.R.","email":"","affiliations":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"preferred":false,"id":779686,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mark, R. K.","contributorId":32159,"corporation":false,"usgs":true,"family":"Mark","given":"R.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":779687,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70242782,"text":"70242782 - 1990 - Tertiary basin development and tectonic implications, Whipple Detachment System, Colorado River Extensional Corridor, California and Arizona","interactions":[],"lastModifiedDate":"2023-04-17T20:34:22.120892","indexId":"70242782","displayToPublicDate":"1990-01-10T14:50:24","publicationYear":"1990","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Tertiary basin development and tectonic implications, Whipple Detachment System, Colorado River Extensional Corridor, California and Arizona","docAbstract":"<p><span>Colorado River extensional corridor. In the Mohave Mountains and Aubrey Hills of Arizona and the eastern Whipple Mountains of California near Parker Dam, these deposits comprise four unconformity-bounded sequences composed of locally derived epiclastic and volcanic rocks and the Peach Springs Tuff. The three older sequences represent syntectonic units that were deposited coeval with detachment faulting, and the fourth is interpreted to be postextensional. The sequences are correlated between four fault-bounded regions, which are the remnants of four different depositional basins. Similar sequences can be correlated over broad areas of the extensional corridor despite the general lack of widespread units. The basins developed in about the same positions, relative to each other and to volcanic sources, as they occupy at present. This is shown by gradational changes of pre-Tertiary rock types between regions, systematic variations in the abundance of magmatic units, and correlative volcanic units that occur in two adjacent regions. The basins formed in the early Miocene from segmentation of the upper crust into blocks bounded by high-angle faults that trended both parallel and perpendicular to the direction of extension and which were terminated at middle crustal depths by a low-angle detachment fault. Extreme rotation of one large crustal block, which constitutes the central Mohave Mountains, is recorded by a major unconformity in the lower Miocene section of one basin. Because coeval sections that formed in adjoining basins do not record this rotation, the underlying crustal blocks must have been separated by transfer faults that allowed them to rotate independently. These proposed transfer faults are represented at present by major faults with trends that parallel the direction of extension on the Whipple detachment system.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB095iB01p00599","usgsCitation":"Nielson, J.E., and Beratan, K.K., 1990, Tertiary basin development and tectonic implications, Whipple Detachment System, Colorado River Extensional Corridor, California and Arizona: Journal of Geophysical Research B: Solid Earth, v. 95, no. B1, p. 599-614, https://doi.org/10.1029/JB095iB01p00599.","productDescription":"16 p.","startPage":"599","endPage":"614","costCenters":[],"links":[{"id":415886,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California","otherGeospatial":"Aubrey Hills, Buckskin Mountain, Mohave Mountains, Parker Dam, Whipple Mountains","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -114.67259654456944,\n              34.723444254111214\n            ],\n            [\n              -114.67259654456944,\n              34.21307030209428\n            ],\n            [\n              -113.77304801522976,\n              34.21307030209428\n            ],\n            [\n              -113.77304801522976,\n              34.723444254111214\n            ],\n            [\n              -114.67259654456944,\n              34.723444254111214\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"95","issue":"B1","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"Nielson, J. E.","contributorId":106140,"corporation":false,"usgs":true,"family":"Nielson","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":869763,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Beratan, Kathi K.","contributorId":304218,"corporation":false,"usgs":false,"family":"Beratan","given":"Kathi","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":869764,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70241998,"text":"70241998 - 1990 - Chapter 19: Magmatic components of a tilted plutonic system, Klamath Mountains, California","interactions":[],"lastModifiedDate":"2023-04-03T21:26:16.943069","indexId":"70241998","displayToPublicDate":"1990-01-01T16:13:46","publicationYear":"1990","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Chapter 19: Magmatic components of a tilted plutonic system, Klamath Mountains, California","docAbstract":"<p><span>The Slinkard pluton (SP) and Wooley Creek batholith (WCB) are the lower and upper parts, respectively, of a tilted Middle Jurassic magma system. The SP and lower WCB intruded structurally lower ophiolitic mélange of the Marble Mountain terrane; the upper WCB intruded successively structurally higher metavolcanic and metasedimentary rocks of the western and eastern Hayfork terranes. The predominant volume of the system comprised a two-layer chamber in which an upper dacitic magma crystallized to form tonalite to granite in the upper WCB and a lower andesitic magma crystallized to form gabbro to tonalite in the lower WCB and SP. The upper part of the system had Sr</span><sub>i</sub><span>, = 0.7043 and a range of δ</span><sup>18</sup><span>O from +8.7 to +11.2%o; the lower part had average Sr</span><sub>i</sub><span>&nbsp;= 0.7046 and δ</span><sup>18</sup><span>O from +8.1 to +8.8%o The two layers of the system are separated by a transition zone that is intermediate in isotopie composition. The compositional differences between upper and lower parts of the system can be explained as (1) the result of intrusion of two separate pods of noncogenetic magma, or (2) the product of in situ assimilation-fractional crystallization. The second explanation requires that a relatively&nbsp;</span><sup>87</sup><span>Sr-rich contaminant such as the structurally lower Marble Mountain terrane was assimilated in the lower part of the system, whereas an&nbsp;</span><sup>18</sup><span>O-rich, generally&nbsp;</span><sup>87</sup><span>Sr-poor contaminant such as the structurally intermediate western Hayfork terrane was assimilated by the upper part. Trace-element evidence suggests that gradational upward zoning (from gabbro to granite) resulted from an upward decrease in the efficiency of crystal-melt segregation and crystal accumulation. H</span><sub>2</sub><span>O-rich basaltic magma preceded development of the two-layer system, and basaltic pulses into the lower part of the system continued during most of its solidification history. Most basaltic rocks display evidence of some degree of fractional crystallization and interaction with crustal rocks; however, a few have low Sr</span><sub>i</sub><span>&nbsp;and high concentrations of Cr and Ni, characteristics of undifferentiated mantle melts. Two-mica granite of the western Slinkard pluton cannot be related to the remainder of the system by fractional crystallization. High δ</span><sup>18</sup><span>O, high Ba, and low Sr abundances suggest that the two-mica granite is probably a partial melt of crustal material.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"The nature and origin of Cordilleran magmatism","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/MEM174-p331","usgsCitation":"Barnes, C.G., Allen, C.M., Hoover, J.D., and Brigham, R.H., 1990, Chapter 19: Magmatic components of a tilted plutonic system, Klamath Mountains, California, chap. <i>of</i> The nature and origin of Cordilleran magmatism, v. 174, p. 331-346, https://doi.org/10.1130/MEM174-p331.","productDescription":"16 p.","startPage":"331","endPage":"346","costCenters":[],"links":[{"id":415128,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Klamath Mountains","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -123.6305573879757,\n              41.99181577374989\n            ],\n            [\n              -123.6305573879757,\n              40.76673594999025\n            ],\n            [\n              -122.32023579117191,\n              40.76673594999025\n            ],\n            [\n              -122.32023579117191,\n              41.99181577374989\n            ],\n            [\n              -123.6305573879757,\n              41.99181577374989\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"174","noUsgsAuthors":false,"publicationDate":"1990-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Barnes, Calvin G.","contributorId":36608,"corporation":false,"usgs":true,"family":"Barnes","given":"Calvin","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":868480,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Allen, Charlotte M. 0000-0002-7288-6758","orcid":"https://orcid.org/0000-0002-7288-6758","contributorId":292917,"corporation":false,"usgs":false,"family":"Allen","given":"Charlotte","email":"","middleInitial":"M.","affiliations":[{"id":63074,"text":"Research School of Earth Sciences, The Australian National University, Canberra, ACT 0200, Australia","active":true,"usgs":false}],"preferred":false,"id":868481,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hoover, James D.","contributorId":303868,"corporation":false,"usgs":false,"family":"Hoover","given":"James","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":868482,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brigham, Robert H.","contributorId":303902,"corporation":false,"usgs":false,"family":"Brigham","given":"Robert","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":868483,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70241997,"text":"70241997 - 1990 - Chapter 21: Neodymium, strontium, and trace-element evidence of crustal anatexis and magma mixing in the Idaho batholith","interactions":[],"lastModifiedDate":"2023-04-03T21:11:23.853533","indexId":"70241997","displayToPublicDate":"1990-01-01T15:57:54","publicationYear":"1990","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Chapter 21: Neodymium, strontium, and trace-element evidence of crustal anatexis and magma mixing in the Idaho batholith","docAbstract":"<p>Variations in initial<span>&nbsp;</span><sup>143</sup>Nd/<sup>144</sup><span>&nbsp;</span>Nd in Late Cretaceous plutonic rocks along the South Fork of the Clearwater River (SFCR) supplement results of Sr and O studies, which demonstrate large-scale mixing in magmas forming the western margin of the Idaho batholith. These marginal or border phases of the batholith span the terrane boundary between Proterozoic crust of North America and late Paleozoic-Mesozoic intraoceanic arc terranes (WSD terranes), delineated by the Western Idaho suture zone (or WISZ).<span>&nbsp;</span><sup>ɛ</sup>Nd<sup>(t)</sup><span>&nbsp;</span>values in Early Cretaceous and older, pre-accretionary plutons of the WSD range from +3 to +7.6, and average +5.7. Proterozoic orthogneisses and metasedimentary rocks range from -7.4 to -13.7 and -10.45 to -15.7, respectively.<span>&nbsp;</span><sup>ɛ</sup>Nd<sup>(t)</sup><span>&nbsp;</span>in Late Cretaceous plutons of the SFCR decreases abruptly from west to east near the WISZ, varying inversely with ɛSr<sup>(t)</sup>. Although Sr isotopic evidence (Fleck and Criss, 1985) is consistent with a binary mixing model, Sm-Nd results modify those conclusions, suggesting that SFCR plutons may be divided into three groups. Group 1 plutons occur in a narrow zone (&lt;4 km width) along the suture zone (WISZ). These bodies probably represent at least three-component mixtures of very high-Sr, arc-type magmas, one or more Proterozoic crustal components that may include lower crust, and a high-Nb, high-Zr component. Group 2 plutons are characterized by high ɛSr<sup>(t)</sup>.and nearly constant, low ɛNd<sup>(t)</sup>. These bodies are thought to represent mixtures of deep-seated partial melts of two different Proterozoic lithospheric types, possibly representing upper and lower crust. Plutons belonging to Group 3 have ɛNd<sup>(t)</sup>.values &lt;-14 and probably incorporated substantial amounts of Proterozoic metasedimentary rocks, but mixing components are poorly defined.</p><p>Trace-element variations in SFCR rocks also reflect the arc terrane-continental crustal boundary as Nb, Zr, and Nd increase dramatically, whereas Sr, Rb/Nb, and Sm/Nd exhibit coincident decreases east of the WISZ. Modeling of these variations with the isotopic variations in Nd and Sr supports mixing, but precludes contamination-bulk-assimilation models. Correlated ɛNd, ɛSr, and δ<sup>18</sup>O within the SFCR favors mixing of crustal and subcrustal magmas rather than derivation of the melts entirely from subcontinental lithosphere.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"The nature and origin of Cordilleran magmatism","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/MEM174-p359","usgsCitation":"Fleck, R.J., 1990, Chapter 21: Neodymium, strontium, and trace-element evidence of crustal anatexis and magma mixing in the Idaho batholith, chap. <i>of</i> The nature and origin of Cordilleran magmatism, v. 174, p. 359-374, https://doi.org/10.1130/MEM174-p359.","productDescription":"16 p.","startPage":"359","endPage":"374","costCenters":[],"links":[{"id":415125,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Idaho","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -118.72255873206723,\n              47.96477348100723\n            ],\n            [\n              -118.72255873206723,\n              43.0950493093458\n            ],\n            [\n              -111.05361477858645,\n              43.0950493093458\n            ],\n            [\n              -111.05361477858645,\n              47.96477348100723\n            ],\n            [\n              -118.72255873206723,\n              47.96477348100723\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"174","noUsgsAuthors":false,"publicationDate":"1990-01-01","publicationStatus":"PW","contributors":{"editors":[{"text":"Anderson, J. Lawford","contributorId":7275,"corporation":false,"usgs":true,"family":"Anderson","given":"J.","email":"","middleInitial":"Lawford","affiliations":[],"preferred":false,"id":868479,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Fleck, Robert J. 0000-0002-3149-8249 fleck@usgs.gov","orcid":"https://orcid.org/0000-0002-3149-8249","contributorId":1048,"corporation":false,"usgs":true,"family":"Fleck","given":"Robert","email":"fleck@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":868478,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70241996,"text":"70241996 - 1990 - Chapter 15: Two different lithosphere types in the Sierra Nevada, California","interactions":[],"lastModifiedDate":"2023-04-03T20:57:23.991707","indexId":"70241996","displayToPublicDate":"1990-01-01T15:50:01","publicationYear":"1990","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Chapter 15: Two different lithosphere types in the Sierra Nevada, California","docAbstract":"<p>Chemical and isotopic characteristics of plutons in the western United States reflect compositions and protoliths of subjacent source materials. A discontinuously exposed shear zone that extends along the length of the Sierra Nevada in California marks a boundary between two areas manifested geologically by wall-rock and roof-pendant lithologies of different ages, depositional environments, and structural histories. In addition, plutons on either side of the boundary have different chemical and isotopic compositions, which indicate that their source regions are of two fundamentally different lithosphere types. The western lithosphere type is called Panthalassan, whereas the eastern type is called North American.</p><p>Isotopic investigations of plutons have defined an initial<span>&nbsp;</span><sup>87</sup>Sr/<sup>86</sup>Sr (Sr<sub>i</sub>) = 0.706 line in each lithosphere type. However, δ<sup>18</sup>O more than +9 per mil in plutons with Sr<sub>i</sub><span>&nbsp;</span>greater than 0.706 in the Panthalassan lithosphere indicates a significantly greater sedimentary component in the source materials for these plutons than for those plutons with similar Sr<sub>i</sub><span>&nbsp;</span>but δ<sup>18</sup>O less than +9 per mil intruded into North American lithosphere. In contrast to the North American lithosphere, there is no evidence that a Proterozoic crystalline sialic basement exists where plutons have Sr<sub>i</sub><span>&nbsp;</span>greater than 0.706 in the Panthalassan lithosphere. Instead, the plutons with Sr<sub>i</sub><span>&nbsp;</span>greater than 0.706 intruded into Panthalassan lithosphere probably acquired that characteristic by assimilation of sediments derived from a Proterozoic sialic crust.</p><p>Plutons with Sr<sub>i</sub><span>&nbsp;</span>less than 0.706 have chemical and Nd isotopic characteristics that indicate time-integrated depletion in large ion lithophile elements in their source regions in the Panthalassan lithosphere relative to their sources in the North American lithosphere.</p><p>The tectonic contact between the two lithosphere types may be the extension of the Sonora-Mojave megashear into northern California.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"The nature and origin of Cordilleran magmatism","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/MEM174-p271","usgsCitation":"Kistler, R., 1990, Chapter 15: Two different lithosphere types in the Sierra Nevada, California, chap. <i>of</i> The nature and origin of Cordilleran magmatism, v. 174, p. 271-282, https://doi.org/10.1130/MEM174-p271.","productDescription":"12 p.","startPage":"271","endPage":"282","costCenters":[],"links":[{"id":415109,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sierra Nevada","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -117.80311909334307,\n              35.67967867440433\n            ],\n            [\n              -118.27941246479301,\n              37.217050651643916\n            ],\n            [\n              -118.5391015788071,\n              37.594563769042765\n            ],\n            [\n              -118.8844118660345,\n              37.75225053631934\n            ],\n            [\n              -119.14711639816923,\n              38.4413482207849\n            ],\n            [\n              -120.00639907494747,\n              39.04033081724296\n            ],\n            [\n              -120.01808171128948,\n              40.065561099062705\n            ],\n            [\n              -121.03109061401318,\n              41.13365961302503\n            ],\n            [\n              -121.8333522558508,\n              41.04287144268798\n            ],\n            [\n              -122.20670849473268,\n              40.65226720719656\n            ],\n            [\n              -121.97952921615854,\n              39.722454345523715\n            ],\n            [\n              -121.11054971843856,\n              38.726852715308155\n            ],\n            [\n              -120.18051771158133,\n              37.63479941611946\n            ],\n            [\n              -119.57756240555739,\n              36.965563780650285\n            ],\n            [\n              -119.34933173045462,\n              36.60899874198313\n            ],\n            [\n              -118.96420772126595,\n              36.25100169979511\n            ],\n            [\n              -118.86871605842819,\n              35.18450304517211\n            ],\n            [\n              -118.21809028354033,\n              35.08551984107308\n            ],\n            [\n              -117.6036883313721,\n              35.45393852346898\n            ],\n            [\n              -117.80311909334307,\n              35.67967867440433\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"174","noUsgsAuthors":false,"publicationDate":"1990-01-01","publicationStatus":"PW","contributors":{"editors":[{"text":"Anderson, J. Lawford","contributorId":7275,"corporation":false,"usgs":true,"family":"Anderson","given":"J.","email":"","middleInitial":"Lawford","affiliations":[],"preferred":false,"id":868477,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Kistler, Ronald W.","contributorId":56969,"corporation":false,"usgs":true,"family":"Kistler","given":"Ronald W.","affiliations":[],"preferred":false,"id":868476,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70241995,"text":"70241995 - 1990 - Chapter 7: Jurassic granitoids and related rocks of the southern Bristol Mountains, southern Providence Mountains, and Colton Hills, Mojave Desert, California","interactions":[],"lastModifiedDate":"2023-04-03T20:45:46.192064","indexId":"70241995","displayToPublicDate":"1990-01-01T15:35:23","publicationYear":"1990","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Chapter 7: Jurassic granitoids and related rocks of the southern Bristol Mountains, southern Providence Mountains, and Colton Hills, Mojave Desert, California","docAbstract":"<p><span>Jurassic plutons in the east-central Mojave Desert region are markedly different from older and younger Mesozoic plutons in the region. They form a chemically and texturally heterogeneous group that ranges in composition from diorite to syenogranite; some phases are alkalic. Igneous rocks in the southern Bristol Mountains, southern Providence Mountains, and Colton Hills are subdivided into five broadly defined groups on the basis of field relations and geochemistry: mafic intrusive rocks; mixed intrusive rocks, consisting of subequigranular and porphyritic subgroups; felsic intrusive rocks; metavolcanic and hypabyssal rocks; and dikes. There is a general trend from older, more mafic and heterogeneous rocks to younger, more felsic and homogeneous plutonic phases. Extreme spatial variations in composition and texture and other field relations indicate that the plutons were intruded during a relatively short time span. Field relations also indicate that the plutons were intruded at upper crustal levels. The plutons were affected by extensive late- or early post-magmatic sodium metasomatism (albitization), which resulted from the introduction and circulation of predominantly meteoric fluids. We propose that the plutons in this region were derived from compositionally heterogeneous but genetically related magmas generated from an upper mantle/lower crustal amphibolitic source. Similar Jurassic rocks are found elsewhere in the southern Cordillera, indicating that the genesis of these unusual rocks is a regional phenomenon.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"The nature and origin of Cordilleran magmatism","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/MEM174-p111","usgsCitation":"Fox, L., and Miller, D., 1990, Chapter 7: Jurassic granitoids and related rocks of the southern Bristol Mountains, southern Providence Mountains, and Colton Hills, Mojave Desert, California, chap. <i>of</i> The nature and origin of Cordilleran magmatism, v. 174, p. 111-132, https://doi.org/10.1130/MEM174-p111.","productDescription":"22 p.","startPage":"111","endPage":"132","costCenters":[],"links":[{"id":415107,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Bristol Mountains, Colton Hills, Mojave Desert, Providence Mountains","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -116.17584352801589,\n              35.61009137164501\n            ],\n            [\n              -116.17584352801589,\n              34.26752643651733\n            ],\n            [\n              -115.06232606106683,\n              34.26752643651733\n            ],\n            [\n              -115.06232606106683,\n              35.61009137164501\n            ],\n            [\n              -116.17584352801589,\n              35.61009137164501\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"174","noUsgsAuthors":false,"publicationDate":"1990-01-01","publicationStatus":"PW","contributors":{"editors":[{"text":"Anderson, J. Lawford","contributorId":7275,"corporation":false,"usgs":true,"family":"Anderson","given":"J.","email":"","middleInitial":"Lawford","affiliations":[],"preferred":false,"id":868475,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Fox, Lydia","contributorId":192666,"corporation":false,"usgs":false,"family":"Fox","given":"Lydia","email":"","affiliations":[],"preferred":false,"id":868473,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, David M. 0000-0003-3711-0441 dmiller@usgs.gov","orcid":"https://orcid.org/0000-0003-3711-0441","contributorId":140769,"corporation":false,"usgs":true,"family":"Miller","given":"David M.","email":"dmiller@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":309,"text":"Geology and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":868474,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70242055,"text":"70242055 - 1990 - Chapter 22: Changing patterns of extensional tectonics; Overprinting of the basin of the middle and upper Miocene Esmeralda Formation in western Nevada by younger structural basins","interactions":[],"lastModifiedDate":"2023-04-05T19:47:04.144312","indexId":"70242055","displayToPublicDate":"1990-01-01T14:32:46","publicationYear":"1990","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Chapter 22: Changing patterns of extensional tectonics; Overprinting of the basin of the middle and upper Miocene Esmeralda Formation in western Nevada by younger structural basins","docAbstract":"<p><span>The middle and upper Miocene Esmeralda Formation of western Nevada was deposited in a continental basin that crops out over an area of about 2,000 km</span><sup>2</sup><span>. The formation consists of thin, westerly derived sedimentary rocks in the western three-quarters of the outcrop area and of thick (3+ km) easterly derived sedimentary rocks in the eastern quarter. Megabreccias along the eastern margin of the basin are interpreted as landslide deposits derived from fault scarps. The basin was probably a half-graben with a major fault or faults on the east side. The position of the basin, its size, and the inferred major syndepositional faults on its east side are all unrelated to present-day topography and the distribution of major faults in the area and indicate a change in paleogeography and structural pattern since the late Miocene. In the eastern part of the basin, this change was accompanied by deformation that includes low-angle-fault detachment of the Esmeralda Formation from underlying amphibolite-grade Late Proterozoic and lower Paleozoic rocks in the Mineral Ridge-Weepah Hills area and uplift, folding, faulting, tilting, and surface exposure of the entire 3+ km thickness of the formation. Middle and upper Miocene basins in the northern part of the Basin and Range province commonly have been attributed to the onset of basin-range tectonism. The tectonic history of the Esmeralda Formation, however, indicates that some of these basins do not occupy the same area, nor are they related to the same syndepositional faults, as present basins. The extensional basin of the Esmeralda Formation can be viewed either as an early structure in an evolving, but kinematically related, extensional terrane in which the distribution of basins and faults changed gradually with time, or as the product of an extensional event kinematically different from that which produced present structures in the same area. The latter hypothesis is favored because of the marked contrasts in the paleogeography and structures associated with the Esmeralda basin compared with modern basins.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Basin and Range extensional tectonics near the latitude of Las Vegas, Nevada","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/MEM176-p447","usgsCitation":"Stewart, J.H., and Diamond, D.S., 1990, Chapter 22: Changing patterns of extensional tectonics; Overprinting of the basin of the middle and upper Miocene Esmeralda Formation in western Nevada by younger structural basins, chap. <i>of</i> Basin and Range extensional tectonics near the latitude of Las Vegas, Nevada, v. 176, p. 447-476, https://doi.org/10.1130/MEM176-p447.","productDescription":"30 p.","startPage":"447","endPage":"476","costCenters":[],"links":[{"id":415289,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","county":"Esmerelda County, Mineral County, Mono County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -118.30725359509913,\n              38.09179976780905\n            ],\n            [\n              -118.30725359509913,\n              37.46076186262489\n            ],\n            [\n              -117.18163912792792,\n              37.46076186262489\n            ],\n            [\n              -117.18163912792792,\n              38.09179976780905\n            ],\n            [\n              -118.30725359509913,\n              38.09179976780905\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"176","noUsgsAuthors":false,"publicationDate":"1990-01-01","publicationStatus":"PW","contributors":{"editors":[{"text":"Wernicke, Brian P.","contributorId":204208,"corporation":false,"usgs":false,"family":"Wernicke","given":"Brian","email":"","middleInitial":"P.","affiliations":[{"id":36877,"text":"Cal Tech","active":true,"usgs":false}],"preferred":false,"id":868711,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Stewart, John H.","contributorId":83086,"corporation":false,"usgs":true,"family":"Stewart","given":"John","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":868709,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Diamond, David S.","contributorId":303953,"corporation":false,"usgs":false,"family":"Diamond","given":"David","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":868710,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
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