{"pageNumber":"4783","pageRowStart":"119550","pageSize":"25","recordCount":184617,"records":[{"id":70210576,"text":"70210576 - 1987 - Geologic setting, petrology, and geochemistry of stratiform sphalerite-galena- barite deposits, red dog creek and drench water creek areas, northwestern Brooks Range, Alaska-a reply","interactions":[],"lastModifiedDate":"2020-06-11T15:15:40.605203","indexId":"70210576","displayToPublicDate":"1987-06-10T11:21:23","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geologic setting, petrology, and geochemistry of stratiform sphalerite-galena- barite deposits, red dog creek and drench water creek areas, northwestern Brooks Range, Alaska-a reply","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"SPEM","doi":"10.2113/gsecongeo.82.4.1079","usgsCitation":"Lange, I.M., and Nokleberg, W.J., 1987, Geologic setting, petrology, and geochemistry of stratiform sphalerite-galena- barite deposits, red dog creek and drench water creek areas, northwestern Brooks Range, Alaska-a reply: Economic Geology, v. 82, no. 4, p. 1079-1081, https://doi.org/10.2113/gsecongeo.82.4.1079.","productDescription":"3 p.","startPage":"1079","endPage":"1081","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":375492,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Northwestern Brooks Range","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -157.8955078125,\n              66.38155976071747\n            ],\n            [\n              -149.7216796875,\n              66.38155976071747\n            ],\n            [\n              -149.7216796875,\n              68.87143872335129\n            ],\n            [\n              -157.8955078125,\n              68.87143872335129\n            ],\n            [\n              -157.8955078125,\n              66.38155976071747\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"82","issue":"4","noUsgsAuthors":false,"publicationDate":"1987-07-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Lange, Ian M.","contributorId":149316,"corporation":false,"usgs":false,"family":"Lange","given":"Ian","email":"","middleInitial":"M.","affiliations":[{"id":5097,"text":"University of Montana, Division of Biological Sciences","active":true,"usgs":false}],"preferred":false,"id":790651,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":790652,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":5210395,"text":"5210395 - 1987 - Captive breeding:  Eagles","interactions":[],"lastModifiedDate":"2020-06-04T18:32:14.052526","indexId":"5210395","displayToPublicDate":"1987-06-09T09:23:17","publicationYear":"1987","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"seriesNumber":"10","title":"Captive breeding:  Eagles","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Raptor Management Techniques Manual","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","publisher":"National Wildlife Federation","publisherLocation":"Washington, DC.","usgsCitation":"Carpenter, J.W., Gabel, R.R., and Wiemeyer, S.N., 1987, Captive breeding:  Eagles, chap. <i>of</i> Raptor Management Techniques Manual, p. 349-356.","productDescription":"8 p.","startPage":"349","endPage":"356","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":201014,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49fde4b07f02db5f5fcb","contributors":{"editors":[{"text":"Pendleton, Beth Giron","contributorId":111970,"corporation":false,"usgs":true,"family":"Pendleton","given":"Beth","email":"","middleInitial":"Giron","affiliations":[],"preferred":false,"id":506394,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Millsap, Brian A.","contributorId":75841,"corporation":false,"usgs":true,"family":"Millsap","given":"Brian","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":506393,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Cline, Keith W.","contributorId":114083,"corporation":false,"usgs":true,"family":"Cline","given":"Keith","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":506396,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Bird, David M.","contributorId":113524,"corporation":false,"usgs":true,"family":"Bird","given":"David","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":506395,"contributorType":{"id":2,"text":"Editors"},"rank":4}],"authors":[{"text":"Carpenter, J. W.","contributorId":81854,"corporation":false,"usgs":true,"family":"Carpenter","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":328333,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gabel, R. R.","contributorId":70500,"corporation":false,"usgs":true,"family":"Gabel","given":"R.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":328331,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wiemeyer, Stanley N.","contributorId":78279,"corporation":false,"usgs":true,"family":"Wiemeyer","given":"Stanley","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":328332,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70199769,"text":"70199769 - 1987 - The relation between human presence and occurrence of Giardia Cysts in streams in the Sierra Nevada, California","interactions":[],"lastModifiedDate":"2018-09-27T14:22:27","indexId":"70199769","displayToPublicDate":"1987-06-01T14:21:41","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2299,"text":"Journal of Freshwater Ecology","active":true,"publicationSubtype":{"id":10}},"title":"The relation between human presence and occurrence of Giardia Cysts in streams in the Sierra Nevada, California","docAbstract":"<p>A portable apparatus was used to filter large quantities of water from streams in California's Sierra Nevada. Samples were processed and examined for Giardia spp. Cysts of Giardia were detected in 22 of 49 (44.9 percent) samples collected at sites downstream from areas of high recreational use and in 5 of 29 (17.2 percent) samples collected at sites downstream from areas of low recreational use. These data indicate that intensity of human use may play a significant role or be a useful indicator in Giardia contamination of surface water. <br></p>","language":"English","doi":"10.1080/02705060.1987.9665163","usgsCitation":"Suk, T.J., Sorenson, S., and Dileanis, P.D., 1987, The relation between human presence and occurrence of Giardia Cysts in streams in the Sierra Nevada, California: Journal of Freshwater Ecology, v. 4, no. 1, p. 71-75, https://doi.org/10.1080/02705060.1987.9665163.","productDescription":"5 p.","startPage":"71","endPage":"75","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":357848,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sierra Nevada","volume":"4","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c113517e4b034bf6a8278a5","contributors":{"authors":[{"text":"Suk, Thomas J.","contributorId":34578,"corporation":false,"usgs":true,"family":"Suk","given":"Thomas","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":746542,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sorenson, Stephen K.","contributorId":37766,"corporation":false,"usgs":true,"family":"Sorenson","given":"Stephen K.","affiliations":[],"preferred":false,"id":746543,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dileanis, Peter D. dileanis@usgs.gov","contributorId":71541,"corporation":false,"usgs":true,"family":"Dileanis","given":"Peter","email":"dileanis@usgs.gov","middleInitial":"D.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":false,"id":746544,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70121882,"text":"70121882 - 1987 - Response of wetland herbaceous communities to gradients of light and substrate following disturbance by thermal pollution","interactions":[],"lastModifiedDate":"2022-02-15T15:27:27.61683","indexId":"70121882","displayToPublicDate":"1987-06-01T08:55:32","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3676,"text":"Vegetatio","active":true,"publicationSubtype":{"id":10}},"title":"Response of wetland herbaceous communities to gradients of light and substrate following disturbance by thermal pollution","docAbstract":"The influence of thermal disturbance and site characteristics on distribution of herbs was studied in portions of a 3020 ha wetland in the southeastern USA. Presence-absence of 52 species in 130 0.25 m<sup>2</sup> plots was determined from four sites with different disturbance histories and from an undisturbed site. Data from the four disturbed sites were ordinated by detrended correspondence analysis. Differences in species composition among sites (coarse scale) were associated with water depth, light, and substrate type. Within a site (at a fine scale), correlation of environmental variables with ordination scores at a chronically disturbed site was weakly correlated with light (<i>r</i>=0.50). At two sites with episodic disturbance, species composition correlated significantly and positively with substrate and water depth. At a recovering site, vegetation patterns were moderately correlated with water depth (<i>r</i>=−0.52). Species richness was correlated with substrate type along the disturbance gradient. Our results are consistent the intermediate disturbance hypothesis and the subsidy-stress gradient concept.","language":"English","publisher":"Springer","doi":"10.1007/BF00041477","usgsCitation":"Dunn, C.P., and Scott, M.L., 1987, Response of wetland herbaceous communities to gradients of light and substrate following disturbance by thermal pollution: Vegetatio, v. 70, no. 2, p. 119-124, https://doi.org/10.1007/BF00041477.","productDescription":"6 p.","startPage":"119","endPage":"124","numberOfPages":"6","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":292928,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Carolina","otherGeospatial":"Savannah River floodplain","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81.85157775878906,\n              33.07485710280626\n            ],\n            [\n              -81.40663146972656,\n              33.07485710280626\n            ],\n            [\n              -81.40663146972656,\n              33.42571077612917\n            ],\n            [\n              -81.85157775878906,\n              33.42571077612917\n            ],\n            [\n              -81.85157775878906,\n              33.07485710280626\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"70","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53fc4de2e4b0413fd75d6b44","contributors":{"authors":[{"text":"Dunn, Christopher P.","contributorId":30924,"corporation":false,"usgs":true,"family":"Dunn","given":"Christopher","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":499262,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Scott, Michael L. scottm@usgs.gov","contributorId":1169,"corporation":false,"usgs":true,"family":"Scott","given":"Michael","email":"scottm@usgs.gov","middleInitial":"L.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":499261,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70206941,"text":"70206941 - 1987 - The 1875 eruption of Askja volcano, Iceland: Combined fractional crystallization and selective contamination in the generation of rhyolitic magma","interactions":[],"lastModifiedDate":"2024-10-07T16:14:57.033424","indexId":"70206941","displayToPublicDate":"1987-06-01T07:41:58","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2748,"text":"Mineralogical Magazine","active":true,"publicationSubtype":{"id":10}},"title":"The 1875 eruption of Askja volcano, Iceland: Combined fractional crystallization and selective contamination in the generation of rhyolitic magma","docAbstract":"<p><span>Major and trace element and Sr, Nd and O isotopic data are presented for ferrobasalts, icelandites, rhyolites, mixed pumices and silicic xenoliths of the 1875 eruption of Askja. Trace element modelling and Sr and Nd data largely confirm previous major element calculations that fractional crystallization was dominant in the generation of the basalt-ferrobasalt-icelandite-rhyolite suite. Relative enrichment in Rb (and Th and U?), depletion in Cs, and low values of δ</span><sup><span class=\"sup\">18</span></sup><span>O/</span><sup><span class=\"sup\">16</span></sup><span>O, in the rhyolites are not explained by this mechanism alone. The silicic magmas were selectively contaminated by diffusion from partially molten granitic wall rocks, now found as xenoliths in the eruptive products, the process being particularly marked by lower δ</span><sup><span class=\"sup\">18</span></sup><span>O and Cs/Rb ratios in the rhyolites than in the associated basalts. This is the first record of a combined fractional crystallization-selective contamination process in an Icelandic silicic complex.</span></p>","language":"English","publisher":"Cambridge University Press","doi":"10.1180/minmag.1987.051.360.01","usgsCitation":"Macdonald, R., Sparks, R., Sugurdsson, H., Mattey, D., Mcgarvie, D., and Smith, R., 1987, The 1875 eruption of Askja volcano, Iceland: Combined fractional crystallization and selective contamination in the generation of rhyolitic magma: Mineralogical Magazine, v. 51, no. 360, p. 183-202, https://doi.org/10.1180/minmag.1987.051.360.01.","productDescription":"20 p.","startPage":"183","endPage":"202","costCenters":[],"links":[{"id":369771,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Iceland","otherGeospatial":"Askja volcano","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-14.5087,66.45589],[-14.73964,65.80875],[-13.60973,65.12667],[-14.90983,64.36408],[-17.79444,63.67875],[-18.65625,63.49638],[-19.97275,63.64363],[-22.76297,63.96018],[-21.77848,64.40212],[-23.95504,64.89113],[-22.1844,65.08497],[-22.22742,65.37859],[-24.32618,65.61119],[-23.65051,66.26252],[-22.13492,66.41047],[-20.57628,65.73211],[-19.05684,66.2766],[-17.79862,65.99385],[-16.16782,66.52679],[-14.5087,66.45589]]]},\"properties\":{\"name\":\"Iceland\"}}]}","volume":"51","issue":"360","noUsgsAuthors":false,"publicationDate":"2018-07-05","publicationStatus":"PW","contributors":{"authors":[{"text":"Macdonald, R.","contributorId":92402,"corporation":false,"usgs":true,"family":"Macdonald","given":"R.","affiliations":[],"preferred":false,"id":776336,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sparks, R.S.J.","contributorId":149550,"corporation":false,"usgs":false,"family":"Sparks","given":"R.S.J.","email":"","affiliations":[],"preferred":false,"id":776337,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sugurdsson, H.","contributorId":220960,"corporation":false,"usgs":false,"family":"Sugurdsson","given":"H.","email":"","affiliations":[],"preferred":false,"id":776338,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mattey, D.P.","contributorId":62349,"corporation":false,"usgs":true,"family":"Mattey","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":776339,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mcgarvie, D.W.","contributorId":220955,"corporation":false,"usgs":false,"family":"Mcgarvie","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":776340,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Smith, R.L.","contributorId":47422,"corporation":false,"usgs":true,"family":"Smith","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":776341,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70015135,"text":"70015135 - 1987 - Global oil assessments and the search for non-OPEC oil","interactions":[],"lastModifiedDate":"2025-05-23T17:08:52.124455","indexId":"70015135","displayToPublicDate":"1987-06-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2918,"text":"OPEC Review","active":true,"publicationSubtype":{"id":10}},"title":"Global oil assessments and the search for non-OPEC oil","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1468-0076.1987.tb00047.x","issn":"02770180","usgsCitation":"Masters, C., 1987, Global oil assessments and the search for non-OPEC oil: OPEC Review, v. 11, no. 2, p. 153-169, https://doi.org/10.1111/j.1468-0076.1987.tb00047.x.","productDescription":"17 p.","startPage":"153","endPage":"169","costCenters":[],"links":[{"id":223584,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2951e4b0c8380cd5a85c","contributors":{"authors":[{"text":"Masters, C.D.","contributorId":96664,"corporation":false,"usgs":true,"family":"Masters","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":370170,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":1013839,"text":"1013839 - 1987 - In situ striped bass (Morone saxatilis) contaminant and water quality studies in the Potomac River","interactions":[],"lastModifiedDate":"2023-03-03T19:26:20.780068","indexId":"1013839","displayToPublicDate":"1987-06-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":874,"text":"Aquatic Toxicology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"In situ striped bass (<i>Morone saxatilis</i>) contaminant and water quality studies in the Potomac River","title":"In situ striped bass (Morone saxatilis) contaminant and water quality studies in the Potomac River","docAbstract":"<p><span>The objectives of this study were to evaluate survival of striped bass (</span><i>Morone saxatilis</i><span>) prolarvae and yearlings in the Potomac River by using in situ test chambers; correlate survival of both striped bass life stages with the presence of water quality conditions, inorganic contaminants, and organic contaminants and conduct histological examinations of surviving yearling striped bass. Survival of striped bass prolarvae ranged from 4.5–22.5% at three field locations during three 96-h experiments; control survival was ≥81%. Yearling survival ranged from 0–77.5% at three river stations during two 7-d experiments; highest mortality occurred at the upriver station. Control survival was 100%. Poor survival of striped bass prolarvae was likely related to the presence of inorganic contaminants (monomeric aluminum, cadmium, and copper) acting singly or synergistically and sudden decreases in water temperature (&lt; 11°C). Yearling mortality at the upriver station was likely correlated with high pH conditions from a point source discharge and perhaps inorganic contaminants. Histological examinations of yearlings suggested that test organisms exposed to Potomac River water exhibited adverse changes in the kidney.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0166-445X(87)90016-6","usgsCitation":"Hall, L.W., Hall, W.S., Bushong, S.J., and Herman, R.L., 1987, In situ striped bass (Morone saxatilis) contaminant and water quality studies in the Potomac River: Aquatic Toxicology, v. 10, p. 73-99, https://doi.org/10.1016/0166-445X(87)90016-6.","productDescription":"27 p.","startPage":"73","endPage":"99","numberOfPages":"27","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":132054,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland, Virginia","otherGeospatial":"Potomac River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -77.35,\n              38.60009214319618\n            ],\n            [\n              -77.35,\n              38.4\n            ],\n            [\n              -77.20508958745842,\n              38.4\n            ],\n            [\n              -77.20508958745842,\n              38.60009214319618\n            ],\n            [\n              -77.35,\n              38.60009214319618\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49fce4b07f02db5f5bc0","contributors":{"authors":[{"text":"Hall, L. W. Jr.","contributorId":6010,"corporation":false,"usgs":false,"family":"Hall","given":"L.","suffix":"Jr.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":319318,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hall, W. S.","contributorId":14773,"corporation":false,"usgs":false,"family":"Hall","given":"W.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":319319,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bushong, S. J.","contributorId":71927,"corporation":false,"usgs":false,"family":"Bushong","given":"S.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":319321,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Herman, Roger L.","contributorId":106184,"corporation":false,"usgs":true,"family":"Herman","given":"Roger","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":319320,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70185547,"text":"70185547 - 1987 - A wireline piston core barrel for sampling cohesionless sand and gravel below the water table","interactions":[],"lastModifiedDate":"2020-01-18T10:40:11","indexId":"70185547","displayToPublicDate":"1987-06-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1866,"text":"Groundwater Monitoring & Remediation","active":true,"publicationSubtype":{"id":10}},"title":"A wireline piston core barrel for sampling cohesionless sand and gravel below the water table","docAbstract":"<p><span>A coring device has been developed to obtain long and minimally disturbed samples of saturated cohesionless sand and gravel. The coring device, which includes a wireline and piston, was developed specifically for use during hollow-stem auger drilling but it also offers possibilities for cable tool and rotary drilling. The core barrel consists of an inner liner made of inexpensive aluminum or plastic tubing, a piston for core recovery, and an exterior steel housing that protects the liner when the core barrel is driven into the aquifer. The core barrel, which is approximately 1.6m (5.6 feet) long, is advanced ahead of the lead auger by hammering at the surface on drill rods that are attached to the core barrel. After the sampler has been driven 1.5m (5 feet), the drill rods are detached and a wireline is used to hoist the core barrel, with the sample contained in the aluminum or plastic liner, to the surface. A vacuum developed by the piston during the coring operation provides good recovery of both the sediment and aquifer fluids contained in the sediment. In the field the sample tubes can be easily split along their length for on-site inspection or they can be capped with the pore water fluids inside and transported to the laboratory. The cores are 5cm (2 inches) in diameter by 1.5m (5 feet) long. Core acquisition to depths of 35m (115 feet), with a recovery greater than 90 percent, has become routine in University of Waterloo aquifer studies. A large diameter (12.7cm [5 inch]) version has also been used successfully. Nearly continuous sample sequences from sand and gravel aquifers have been obtained for studies of sedimentology, hydraulic conductivity, hydrogeochemistry and microbiology.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6592.1987.tb01077.x","usgsCitation":"Zapico, M.M., Vales, S., and Cherry, J.A., 1987, A wireline piston core barrel for sampling cohesionless sand and gravel below the water table: Groundwater Monitoring & Remediation, v. 7, no. 3, p. 74-82, https://doi.org/10.1111/j.1745-6592.1987.tb01077.x.","productDescription":"9 p.","startPage":"74","endPage":"82","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338194,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-02-22","publicationStatus":"PW","scienceBaseUri":"58d4df18e4b05ec79911d1f1","contributors":{"authors":[{"text":"Zapico, Michael M.","contributorId":189748,"corporation":false,"usgs":false,"family":"Zapico","given":"Michael","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":685926,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vales, Samuel","contributorId":189749,"corporation":false,"usgs":false,"family":"Vales","given":"Samuel","email":"","affiliations":[],"preferred":false,"id":685927,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cherry, John A.","contributorId":189750,"corporation":false,"usgs":false,"family":"Cherry","given":"John","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":685928,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":38608,"text":"pp1228C - 1987 - Tertiary marine pelecypods of California and Baja California; Plicatulidae to Ostreidae","interactions":[],"lastModifiedDate":"2023-05-11T19:02:02.090221","indexId":"pp1228C","displayToPublicDate":"1987-06-01T00:00:00","publicationYear":"1987","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":"1228","chapter":"C","title":"Tertiary marine pelecypods of California and Baja California; Plicatulidae to Ostreidae","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/pp1228C","usgsCitation":"Moore, E.J., 1987, Tertiary marine pelecypods of California and Baja California; Plicatulidae to Ostreidae: U.S. Geological Survey Professional Paper 1228, iv, 53 p., https://doi.org/10.3133/pp1228C.","productDescription":"iv, 53 p.","costCenters":[],"links":[{"id":399994,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_114688.htm","linkFileType":{"id":5,"text":"html"}},{"id":65425,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1228c/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":120525,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/1228c/report-thumb.jpg"}],"country":"Mexico, United States","state":"Baja California, Baja California Sur, California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -109.86328125,\n              22.776181505086505\n            ],\n            [\n       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,{"id":70169010,"text":"70169010 - 1987 - U. S. Geological Survey begins seismic ground response experiments in Washington State","interactions":[],"lastModifiedDate":"2016-03-10T13:26:44","indexId":"70169010","displayToPublicDate":"1987-06-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1437,"text":"Earthquakes & Volcanoes (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"U. S. Geological Survey begins seismic ground response experiments in Washington State","docAbstract":"<p>Residents of a West Seattle neighborhood must have been puzzled one Saturday morning in December 1986. Two men were leaning against the wall of a house and rhythmically pushing against it, and were being urged on by the shouts of another man standing on the roof. A horizontal seismometer was fastened to the top of the roof with a wad of beeswax; a thin cable trailed from the seismometer over the roof edges across the lawn and into a van parked at the curb. A digital seismograph in the van was recording the minute vibrations that were produced by the two men pushing on the wall and that were detected by the seismometer. From those recordings, the men could determine the predominant frequency and damping characteristics of the house when it is forced to oscillate in a horizontal direction as, for example, in an earthquake.</p>\n<p>The men were Denver-based U.S Geological Survey (USGS) geophysicists working on the Urban Hazards Field Investigations project. On the previous day they had recorded two events on their seismographs-a distant nuclear explosion in Nevada and a blast at amine near Centralia, Washington. On another day, they used seismic refraction equipment to locate the depth of bedrock and seismic velocity to it at several locations in West Seattle and in the Seward Park-Brighton district of southeast Seattle.&nbsp;</p>","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Tarr, A., and King, K.W., 1987, U. S. Geological Survey begins seismic ground response experiments in Washington State: Earthquakes & Volcanoes (USGS), v. 19, no. 5, p. 160-170.","productDescription":"11 p.","startPage":"160","endPage":"170","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":318792,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -123.28857421875,\n              49.023461463214126\n            ],\n            [\n              -117.02636718749999,\n              49.023461463214126\n            ],\n            [\n              -117.04833984375001,\n              46.37725420510028\n            ],\n            [\n              -116.91650390625,\n              46.17983040759436\n            ],\n            [\n              -116.94946289062499,\n              46.01985337287634\n            ],\n            [\n              -118.94897460937499,\n              46.01222384063238\n            ],\n            [\n              -119.20166015625,\n              45.92822950933618\n            ],\n            [\n              -119.5751953125,\n              45.935870621190546\n            ],\n            [\n              -119.871826171875,\n              45.82879925192134\n            ],\n            [\n              -120.498046875,\n              45.69083283645816\n            ],\n            [\n              -120.59692382812499,\n              45.71385093029221\n            ],\n            [\n              -121.00341796874999,\n              45.67548217560647\n            ],\n            [\n              -121.51977539062499,\n              45.744526980468436\n            ],\n            [\n              -121.805419921875,\n              45.729191061299936\n            ],\n            [\n              -122.32177734375,\n              45.54483149242463\n            ],\n            [\n              -122.71728515624999,\n              45.66780526567164\n            ],\n            [\n              -122.78320312499999,\n              45.85176048817254\n            ],\n            [\n              -122.9150390625,\n              46.126556302418514\n            ],\n            [\n              -123.20068359374999,\n              46.18743678432541\n            ],\n            [\n              -123.31054687499999,\n              46.13417004624326\n            ],\n            [\n              -123.42041015624999,\n              46.2330529447983\n            ],\n            [\n              -123.70605468750001,\n              46.240651955001695\n            ],\n            [\n              -124.1015625,\n              46.240651955001695\n            ],\n            [\n              -124.90356445312499,\n              48.31242790407178\n            ],\n            [\n              -124.87060546874999,\n              48.516604348867475\n            ],\n            [\n              -124.57397460937499,\n              48.46563710044979\n            ],\n            [\n              -123.629150390625,\n              48.246625590713826\n            ],\n            [\n              -123.24462890625,\n              48.29781249243716\n            ],\n            [\n              -123.12377929687499,\n              48.38544219115486\n            ],\n            [\n              -123.277587890625,\n              48.66194284607008\n            ],\n            [\n              -123.02490234375,\n              48.785151998043155\n            ],\n            [\n              -123.01391601562499,\n              48.850258199721495\n            ],\n            [\n              -123.365478515625,\n              49.009050809382046\n            ],\n            [\n              -123.28857421875,\n              49.023461463214126\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"19","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56e2a8d2e4b0f59b85d391c5","contributors":{"authors":[{"text":"Tarr, Arthur C.","contributorId":75903,"corporation":false,"usgs":true,"family":"Tarr","given":"Arthur C.","affiliations":[],"preferred":false,"id":622539,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"King, K. W.","contributorId":105729,"corporation":false,"usgs":true,"family":"King","given":"K.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":622540,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70185544,"text":"70185544 - 1987 - Aqueous pyrite oxidation by dissolved oxygen and by ferric iron","interactions":[],"lastModifiedDate":"2020-01-18T09:37:09","indexId":"70185544","displayToPublicDate":"1987-06-01T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Aqueous pyrite oxidation by dissolved oxygen and by ferric iron","docAbstract":"<p><span>Rates of aqueous, abiotic pyrite oxidation were measured in oxygen-saturated and anaerobic Fe(III)-saturated solutions with initial pH from 2 to 9. These studies included analyses of sulfite, thiosulfate, polythionates and sulfate and procedures for cleaning oxidation products from pyrite surfaces were evaluated. Pyrite oxidation in oxygen-saturated solutions produced (1) rates that were only slightly dependent on initial pH, (2) linear increases in sulfoxy anions and (3) thiosulfate and polythionates at pH &gt; 3.9. Intermediate sulfoxy anions were observed only at high stirring rates. In anaerobic Fe(III)-saturated solutions, no intermediates were observed except traces of sulfite at pH 9. The faster rate of oxidation in Fe(III)-saturated solutions supports a reaction mechanism in which Fe(III) is the direct oxidant of pyrite in both aerobic and anaerobic systems. The proposal of this mechanism is also supported by theoretical considerations regarding the low probability of a direct reaction between paramagnetic molecular oxygen and diamagnetic pyrite. Results from a study of sphalerite oxidation support the hypothesis that thiosulfate is a key intermediate in sulfate production, regardless of the bonding structure of the sulfide mineral.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(87)90337-1","usgsCitation":"Moses, C.O., Nordstrom, D.K., Herman, J.S., and Mills, A.L., 1987, Aqueous pyrite oxidation by dissolved oxygen and by ferric iron: Geochimica et Cosmochimica Acta, v. 51, no. 6, p. 1561-1571, https://doi.org/10.1016/0016-7037(87)90337-1.","productDescription":"11 p. ","startPage":"1561","endPage":"1571","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338192,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58d4df18e4b05ec79911d1f3","contributors":{"authors":[{"text":"Moses, Carl O.","contributorId":189747,"corporation":false,"usgs":false,"family":"Moses","given":"Carl","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":685919,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":false,"id":685920,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Herman, Janet S.","contributorId":62138,"corporation":false,"usgs":true,"family":"Herman","given":"Janet","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":685921,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mills, Aaron L.","contributorId":189746,"corporation":false,"usgs":false,"family":"Mills","given":"Aaron","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":685922,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70121889,"text":"70121889 - 1987 - Soil-plant correlation studies for selected wetlands of the United States","interactions":[],"lastModifiedDate":"2014-08-25T09:45:41","indexId":"70121889","displayToPublicDate":"1987-05-26T09:44:43","publicationYear":"1987","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"Soil-plant correlation studies for selected wetlands of the United States","docAbstract":"No abstract available.","largerWorkTitle":"Wetland and Riparian Ecosystems of the American West: Eighth annual meeting of the Society of Wetland Scientists","conferenceTitle":"Wetland and Riparian Ecosystems of the American West: Eighth annual meeting of the Society of Wetland Scientists","conferenceDate":"1987-05-26T00:00:00","conferenceLocation":"Seattle, WA","language":"English","publisher":"Planning Information Corp","publisherLocation":"Denver, CO","usgsCitation":"Segelquist, C., Auble, G.T., and Ischinger, L.S., 1987, Soil-plant correlation studies for selected wetlands of the United States, 4 p.","productDescription":"4 p.","numberOfPages":"4","costCenters":[],"links":[{"id":292938,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53fc4de5e4b0413fd75d6b5d","contributors":{"authors":[{"text":"Segelquist, C.A.","contributorId":108410,"corporation":false,"usgs":true,"family":"Segelquist","given":"C.A.","affiliations":[],"preferred":false,"id":499273,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Auble, Gregor T. 0000-0002-0843-2751 aubleg@usgs.gov","orcid":"https://orcid.org/0000-0002-0843-2751","contributorId":2187,"corporation":false,"usgs":true,"family":"Auble","given":"Gregor","email":"aubleg@usgs.gov","middleInitial":"T.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":499271,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ischinger, Lee S.","contributorId":34054,"corporation":false,"usgs":true,"family":"Ischinger","given":"Lee","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":499272,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70175107,"text":"70175107 - 1987 - Propogation of tides in south, central and San Pablo Bays, California - comparison of model results and field observations","interactions":[],"lastModifiedDate":"2016-08-08T13:02:46","indexId":"70175107","displayToPublicDate":"1987-05-23T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Propogation of tides in south, central and San Pablo Bays, California - comparison of model results and field observations","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"Proceedings, workshop on hydrodynamics of San Francisco Bay/delta","conferenceTitle":"Workshop on hydrodynamics of San Francisco Bay/delta","conferenceDate":"May 22-23, 1987","conferenceLocation":"Sausalito, Calif.","language":"English","usgsCitation":"Gartner, J.W., and Cheng, R.T., 1987, Propogation of tides in south, central and San Pablo Bays, California - comparison of model results and field observations, <i>in</i> Proceedings, workshop on hydrodynamics of San Francisco Bay/delta, Sausalito, Calif., May 22-23, 1987.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":326231,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57a9ad6de4b05e859bdfbab3","contributors":{"authors":[{"text":"Gartner, J. W.","contributorId":81903,"corporation":false,"usgs":false,"family":"Gartner","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":643945,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cheng, R. T.","contributorId":23138,"corporation":false,"usgs":false,"family":"Cheng","given":"R.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":643946,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70014720,"text":"70014720 - 1987 - Evidence for great Holocene earthquakes along the outer coast of Washington state","interactions":[],"lastModifiedDate":"2025-09-24T16:55:17.717305","indexId":"70014720","displayToPublicDate":"1987-05-22T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Evidence for great Holocene earthquakes along the outer coast of Washington state","docAbstract":"Intertidal mud has buried extensive, well-vegetated lowlands in westernmost Washington at least six times in the past 7000 years. Each burial was probably occasioned by rapid tectonic subsidence in the range of 0.5 to 2.0 meters. Anomalous sheets of sand atop at least three ofthe buried lowlands suggest that tsunamis resulted from the same events that caused the subsidence. These events may have been great earthquakes from the subduction zone between the Juan de Fuca and North America plates.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.236.4804.942","issn":"00368075","usgsCitation":"Atwater, B.F., 1987, Evidence for great Holocene earthquakes along the outer coast of Washington state: Science, v. 236, no. 4804, p. 942-944, https://doi.org/10.1126/science.236.4804.942.","productDescription":"3 p.","startPage":"942","endPage":"944","costCenters":[],"links":[{"id":225847,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -125.14698233121786,\n              48.96324323050743\n            ],\n            [\n              -125.14698233121786,\n              46.11522629268242\n            ],\n            [\n              -121.35201493207043,\n              46.11522629268242\n            ],\n            [\n              -121.35201493207043,\n              48.96324323050743\n            ],\n            [\n              -125.14698233121786,\n              48.96324323050743\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"236","issue":"4804","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d40e4b0c8380cd52ede","contributors":{"authors":[{"text":"Atwater, Brian F. 0000-0003-1155-2815 atwater@usgs.gov","orcid":"https://orcid.org/0000-0003-1155-2815","contributorId":3297,"corporation":false,"usgs":true,"family":"Atwater","given":"Brian","email":"atwater@usgs.gov","middleInitial":"F.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":369126,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70014249,"text":"70014249 - 1987 - Geological terrains and crater frequencies on Ariel","interactions":[],"lastModifiedDate":"2025-06-03T16:52:13.689284","indexId":"70014249","displayToPublicDate":"1987-05-21T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Geological terrains and crater frequencies on Ariel","docAbstract":"<p>The southern hemisphere of Ariel, a satellite of Uranus, can be divided into several terrain types. Data on the size-frequency distribution of craters for those different terrain types indicate that these terrains formed over a relatively short period of time. Much information on Ariel's geological history can be gained from these data.&nbsp;</p>","language":"English","publisher":"Springer Nature","doi":"10.1038/327201a0","issn":"00280836","usgsCitation":"Plescia, J.B., 1987, Geological terrains and crater frequencies on Ariel: Nature, v. 327, no. 6119, p. 201-204, https://doi.org/10.1038/327201a0.","productDescription":"4 p.","startPage":"201","endPage":"204","costCenters":[],"links":[{"id":490611,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1038/327201a0","text":"External Repository"},{"id":225432,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"327","issue":"6119","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2283e4b0c8380cd570fa","contributors":{"authors":[{"text":"Plescia, J. B.","contributorId":15689,"corporation":false,"usgs":true,"family":"Plescia","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":367938,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70210127,"text":"70210127 - 1987 - Volcanism and massive sulfide formation at a sedimented spreading center, Escanaba Trough, Gorda Ridge, northeast Pacific Ocean","interactions":[],"lastModifiedDate":"2020-05-14T19:05:03.176201","indexId":"70210127","displayToPublicDate":"1987-05-14T14:00:53","publicationYear":"1987","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":"Volcanism and massive sulfide formation at a sedimented spreading center, Escanaba Trough, Gorda Ridge, northeast Pacific Ocean","docAbstract":"<p><span>Seismic‐reflection profiles over the sediment‐filled Escanaba Trough at the southern Gorda Ridge reveal a series of volcanic centers that pierce the sediment. The volcanic edifices are 3 to 6 km in diameter and are spaced at 15 to 20 km intervals along the axis of the trough. The volcanic intrusions have uplifted the sediment as much as 100 m, and in places fresh basaltic flows are exposed at the sea floor. Unoxidized pyrrhotite‐rich massive‐sulfide samples were obtained from the flanks of one of these volcanic centers. The composition and form of the sulfide samples suggest significant interaction between hydrothermal fluids and sediment at depth, and deposition of sulfide within the sediment pile.</span></p>","language":"English","publisher":"Wiley","doi":"10.1029/GL014i007p00769","usgsCitation":"Morton, J.L., Holmes, M.L., and Koski, R.A., 1987, Volcanism and massive sulfide formation at a sedimented spreading center, Escanaba Trough, Gorda Ridge, northeast Pacific Ocean: Geophysical Research Letters, v. 14, no. 7, p. 769-772, https://doi.org/10.1029/GL014i007p00769.","productDescription":"4 p.","startPage":"769","endPage":"772","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":374845,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"14","issue":"7","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Morton, Janet L.","contributorId":37269,"corporation":false,"usgs":true,"family":"Morton","given":"Janet","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":789221,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Holmes, Mark L.","contributorId":77945,"corporation":false,"usgs":true,"family":"Holmes","given":"Mark","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":789222,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koski, Randolph A. rkoski@usgs.gov","contributorId":2949,"corporation":false,"usgs":true,"family":"Koski","given":"Randolph","email":"rkoski@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":789223,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70014272,"text":"70014272 - 1987 - Studies of San Andreas fault","interactions":[],"lastModifiedDate":"2025-06-03T22:47:46.973187","indexId":"70014272","displayToPublicDate":"1987-05-14T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Studies of San Andreas fault","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Springer Nature","doi":"10.1038/327099a0","issn":"00280836","usgsCitation":"Stuart, W., 1987, Studies of San Andreas fault: Nature, v. 327, no. 6118, p. 99-100, https://doi.org/10.1038/327099a0.","productDescription":"2 p.","startPage":"99","endPage":"100","costCenters":[],"links":[{"id":225765,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Parkfield","otherGeospatial":"San Andreas fault","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -120.6791387841883,\n              36.098082109265576\n            ],\n            [\n              -120.6791387841883,\n              35.75001120242531\n            ],\n            [\n              -120.23105937586315,\n              35.75001120242531\n            ],\n            [\n              -120.23105937586315,\n              36.098082109265576\n            ],\n            [\n              -120.6791387841883,\n              36.098082109265576\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"327","issue":"6118","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9c8ce4b08c986b31d433","contributors":{"authors":[{"text":"Stuart, W.D.","contributorId":65865,"corporation":false,"usgs":true,"family":"Stuart","given":"W.D.","email":"","affiliations":[],"preferred":false,"id":367999,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70014885,"text":"70014885 - 1987 - Temporal changes in microseismicity and creep near Parkfield, California","interactions":[],"lastModifiedDate":"2025-06-03T22:42:47.754645","indexId":"70014885","displayToPublicDate":"1987-05-14T00:00:00","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Temporal changes in microseismicity and creep near Parkfield, California","docAbstract":"<p><span>The 25-km-long section of the San Andreas fault near Parkfield, California ruptured in similar magnitude-6 earthquakes in 1881, 1901, 1922, 1934 and 1966. On the basis of a number of lines of seismological evidence, a section of the San Andreas fault, now termed the Parkfield preparation zone, has been identified as the locus of the next Parkfield earthquake</span><sup>1,3</sup><span>. Here we describe coincident changes in surface creep rates and deep seismicity near the Parkfield preparation zone following the 2 May 1983 Coalinga earthquake, and suggest that both respond to the same stimuli. These changes were concentrated near the point of initiation of the magnitude-6 characteristic Parkfield earthquakes, lending credence to the hypothesis that this section of the San Andreas fault is characterized by a unique set of physical properties</span><sup>4–6</sup><span>&nbsp;which make it ideal for earthquake prediction studies and which may also be useful for identifying hypocentral regions in other areas.</span></p>","language":"English","publisher":"Springer Nature","doi":"10.1038/327134a0","issn":"00280836","usgsCitation":"Poley, C., Lindh, A., Bakun, W.H., and Schulz, S., 1987, Temporal changes in microseismicity and creep near Parkfield, California: Nature, v. 327, no. 6118, p. 134-137, https://doi.org/10.1038/327134a0.","productDescription":"4 p.","startPage":"134","endPage":"137","costCenters":[],"links":[{"id":226185,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Parkfield","otherGeospatial":"San Andreas fault","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -120.6791387841883,\n              36.098082109265576\n            ],\n            [\n              -120.6791387841883,\n              35.75001120242531\n            ],\n            [\n              -120.23105937586315,\n              35.75001120242531\n            ],\n            [\n              -120.23105937586315,\n              36.098082109265576\n            ],\n            [\n              -120.6791387841883,\n              36.098082109265576\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"327","issue":"6118","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba500e4b08c986b320729","contributors":{"authors":[{"text":"Poley, C.M.","contributorId":52628,"corporation":false,"usgs":true,"family":"Poley","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":369526,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lindh, A.G.","contributorId":24784,"corporation":false,"usgs":true,"family":"Lindh","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":369525,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bakun, W. H.","contributorId":67055,"corporation":false,"usgs":true,"family":"Bakun","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":369527,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schulz, S.S.","contributorId":6859,"corporation":false,"usgs":true,"family":"Schulz","given":"S.S.","email":"","affiliations":[],"preferred":false,"id":369524,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70210067,"text":"70210067 - 1987 - Petrology and geochemistry of alkali gabbronorites from Lunar Breccia 67975","interactions":[],"lastModifiedDate":"2020-05-12T21:10:24.500561","indexId":"70210067","displayToPublicDate":"1987-05-12T16:02:50","publicationYear":"1987","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":"Petrology and geochemistry of alkali gabbronorites from Lunar Breccia 67975","docAbstract":"<p><span>Clasts of an unusual type of lunar highlands igneous rock, alkali gabbronorite, have been found in Apollo 16 breccia 67975. The alkali gabbronorites form two distinct subgroups, magnesian and ferroan. Modes and bulk compositions are highly varied. The magnesian alkali gabbronorites are composed of bytownitic plagioclase (OrAn), hypersthene (WoEn), augite (WoEn), a silica mineral, and trace Ba‐rich K‐feldspar. The ferroan alkali gabbronorites are composed of ternary plagioclase (OrAn), pigeonite (WoEn), augite (WoEn), Ba‐rich K‐feldspar, and a silica mineral. Trace minerals in both subgroups are apatite, REE‐rich whitlockite, and zircon. The magnesian and ferroan alkali gabbronorites appear to have formed by progressive differentiation of the same, or closely related, parent magmas; the compositional data indicate that these magmas were REE‐rich. The ternary plagioclase is probably a high‐temperature metastable phase formed during crystallization. In composition and mineralogy, the 67975 alkali gabbronorites show many similarities to Apollo 12 and 14 alkali norites, alkali gabbronorites, and alkali anorthosites, and all these rocks together constitute a distinctive alkali suite. In addition, the alkali gabbronorites show some similarities to KREEP basalts, Mg‐norites, and some felsites. These data suggest genetic links between some or all of these types of pristine rocks. Two types of relationships are possible. The first is that alkali‐suite rocks crystallized in plutons of KREEP basalt magma, and KREEP basalts are their extrusive equivalents. The second is that the alkali‐suite rocks and some felsites all crystallized in plutons of Mg‐norite parent magmas, and KREEP basalt magmas formed by remelting of these plutons. Additional studies are needed to resolve which of these hypotheses is correct.</span></p>","language":"English","publisher":"Wiley","doi":"10.1029/JB092iB04p0E314","usgsCitation":"James, O., Lindstrom, M., and Flohr, M., 1987, Petrology and geochemistry of alkali gabbronorites from Lunar Breccia 67975: Journal of Geophysical Research B: Solid Earth, v. 92, no. B4, p. 314-330, https://doi.org/10.1029/JB092iB04p0E314.","productDescription":"17 p.","startPage":"314","endPage":"330","costCenters":[],"links":[{"id":374711,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"B4","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"James, O.B.","contributorId":100526,"corporation":false,"usgs":true,"family":"James","given":"O.B.","email":"","affiliations":[],"preferred":false,"id":788966,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lindstrom, M.M.","contributorId":224652,"corporation":false,"usgs":false,"family":"Lindstrom","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":788967,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Flohr, M.K.","contributorId":80012,"corporation":false,"usgs":true,"family":"Flohr","given":"M.K.","email":"","affiliations":[],"preferred":false,"id":788968,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70210060,"text":"70210060 - 1987 - Colorado Plateau","interactions":[],"lastModifiedDate":"2021-01-28T20:12:01.16041","indexId":"70210060","displayToPublicDate":"1987-05-12T14:17:36","publicationYear":"1987","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"chapter":"8","title":"Colorado Plateau","docAbstract":"<p>Field studies in the Colorado Plateau occupy an honored place in the development of geomorphic theory. The purpose of this chapter is to briefly review the foundational, regional, and process-oriented studies in the region, and to provide a review of promising threads of inquiry set in a context of more than a century of geomorphologic research in the region.</p><p>The Colorado Plateau has sharply defined boundaries that separate it from neighboring geomorphic provinces (Fig. 1; for details see Thornbury, 1965). On the west, faults and the perimeters of volcanic plateaus mark the boundary between the Colorado Plateau and the Basin and Range Province. The boundary extends across the southern edge of the plateau where it is less radically defined, but is nonetheless visible on the surface in the form of an uplifted edge of sedimentary rocks known as the Mogollon Rim, which extends from northwest Arizona diagonally into north-central New Mexico. The eastern and northern boundaries are delineated by the contact between sedimentary rocks and upthrust or folded crystalline rocks of the Rocky Mountains.</p><p>The plateau is a definable tectonic unit relatively easily separated from other provinces, but it shows considerable internal variation (Fig. 1; for details see Hunt, 1974a). The interior of the kidney-shaped Colorado Plateau Province reveals a series of subsections that depend on geologic and geomorphologic definition. The centrally located Canyon Lands Section is dominated by gently folded sedimentary rocks, while the western High Plateaus Section reveals widespread accumulations of volcanic materials.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Geomorphic systems of North America","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"GSA","doi":"10.1130/DNAG-CENT-v2.259","usgsCitation":"Graf, W.L., Hereford, R., Laity, J., and Young, R.A., 1987, Colorado Plateau, chap. 8 <i>of</i> Geomorphic systems of North America, v. 2, p. 259-302, https://doi.org/10.1130/DNAG-CENT-v2.259.","productDescription":"44 p.","startPage":"259","endPage":"302","costCenters":[],"links":[{"id":374755,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, Colorado, New Mexico, Utah","otherGeospatial":"Colorado Plateau","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -109.05029296875,\n              32.76880048488168\n            ],\n            [\n              -106.72119140625,\n              33.797408767572485\n            ],\n            [\n              -105.29296874999999,\n              35.62158189955968\n            ],\n            [\n              -105.09521484375,\n              36.474306755095235\n            ],\n            [\n              -105.029296875,\n              37.71859032558816\n            ],\n            [\n              -105.88623046874999,\n              38.048091067457236\n            ],\n            [\n              -106.01806640624999,\n              39.90973623453719\n            ],\n            [\n              -107.20458984375,\n              40.43022363450862\n            ],\n            [\n              -109.9951171875,\n              40.613952441166596\n            ],\n            [\n              -111.68701171875,\n              39.470125122358176\n            ],\n            [\n              -112.587890625,\n              36.96744946416934\n            ],\n            [\n              -113.9501953125,\n              35.55010533588552\n            ],\n            [\n              -113.66455078125,\n              34.542762387234845\n            ],\n            [\n              -109.05029296875,\n              32.76880048488168\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Graf, William L.","contributorId":92415,"corporation":false,"usgs":true,"family":"Graf","given":"William","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":789039,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hereford, Richard 0000-0002-0892-7367 rhereford@usgs.gov","orcid":"https://orcid.org/0000-0002-0892-7367","contributorId":3620,"corporation":false,"usgs":true,"family":"Hereford","given":"Richard","email":"rhereford@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":789040,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Laity, Julie","contributorId":224651,"corporation":false,"usgs":false,"family":"Laity","given":"Julie","email":"","affiliations":[],"preferred":false,"id":789041,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Young, Richard A.","contributorId":38975,"corporation":false,"usgs":true,"family":"Young","given":"Richard","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":789042,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70210059,"text":"70210059 - 1987 - Sediment-yield history of a small basin in southern Utah, 1937–1976: Implications for land management and geomorphology","interactions":[],"lastModifiedDate":"2020-05-12T19:14:04.312579","indexId":"70210059","displayToPublicDate":"1987-05-12T14:09:07","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Sediment-yield history of a small basin in southern Utah, 1937–1976: Implications for land management and geomorphology","docAbstract":"<p><span>Alluvium deposited in a reservoir from 1937 to 1976 records the sediment-yield history of a small (2.8 km</span><sup>2</sup><span>), high-relief basin in semiarid southern Utah. Stratification in the alluvium shows that sediment was deposited in the reservoir only 21 times in 38 yr, a runoff recurrence interval of 1.8 yr. Thus, on average, the particular combination of rainfall intensity, duration, and antecedent moisture conditions producing runoff did not recur often. On the basis of the volume of beds in the reservoir fill, sediment yield of individual runoff events averaged 2500 m</span><sup>3</sup><span>/km</span><sup>2</sup><span>&nbsp;(5.3 a-ft/mi</span><sup>2</sup><span>) with slightly less than one order of magnitude variation. This low variation is not expected of small basins and probably resulted from limited hillslope sediment supply, suggesting that transport processes were more rapid than weathering processes. Sediment yield, therefore, was evidently controlled by the availability of freshly weathered material.</span></p>","language":"English","publisher":"GSA","doi":"10.1130/0091-7613(1987)15<954:SHOASB>2.0.CO;2","usgsCitation":"Hereford, R., 1987, Sediment-yield history of a small basin in southern Utah, 1937–1976: Implications for land management and geomorphology: Geology, v. 15, no. 10, p. 954-957, https://doi.org/10.1130/0091-7613(1987)15<954:SHOASB>2.0.CO;2.","productDescription":"4 p.","startPage":"954","endPage":"957","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":374705,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, Utah","otherGeospatial":"Southern Utah","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -112.5714111328125,\n              36.721273880045004\n            ],\n            [\n              -111.258544921875,\n              36.721273880045004\n            ],\n            [\n              -111.258544921875,\n              37.15156050223665\n            ],\n            [\n              -112.5714111328125,\n              37.15156050223665\n            ],\n            [\n              -112.5714111328125,\n              36.721273880045004\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"15","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hereford, Richard 0000-0002-0892-7367 rhereford@usgs.gov","orcid":"https://orcid.org/0000-0002-0892-7367","contributorId":3620,"corporation":false,"usgs":true,"family":"Hereford","given":"Richard","email":"rhereford@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":788951,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70210025,"text":"70210025 - 1987 - Coincident seismic reflection/refraction studies of the continental lithosphere: A global review ","interactions":[],"lastModifiedDate":"2020-05-11T20:56:10.280545","indexId":"70210025","displayToPublicDate":"1987-05-11T15:53:03","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Coincident seismic reflection/refraction studies of the continental lithosphere: A global review ","docAbstract":"<p class=\"chapter-para\">Vertical-incidence reflection profiling has identified several characteristic features of the continental lithosphere including a generally transparent upper crust, a reflective lower crust, reflections from the crust-mantle boundary, and a commonly transparent upper mantle. The underlying physical causes of these characteristic features remain poorly understood. This review summarizes additional information brought to bear on the physical properties of these characteristic crustal structures through the use of coincident wide-angle refraction profiling.</p>","language":"English","publisher":"Oxford Academic","doi":"10.1111/j.1365-246X.1987.tb04379.x","usgsCitation":"Mooney, W.D., and Brocher, T.M., 1987, Coincident seismic reflection/refraction studies of the continental lithosphere: A global review : Geophysical Journal International, v. 89, no. 1, p. 1-6, https://doi.org/10.1111/j.1365-246X.1987.tb04379.x.","productDescription":"6 p.","startPage":"1","endPage":"6","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":480074,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.1987.tb04379.x","text":"Publisher Index Page"},{"id":374607,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"89","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Mooney, Walter D. 0000-0002-5310-3631 mooney@usgs.gov","orcid":"https://orcid.org/0000-0002-5310-3631","contributorId":3194,"corporation":false,"usgs":true,"family":"Mooney","given":"Walter","email":"mooney@usgs.gov","middleInitial":"D.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":788848,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brocher, Thomas M. 0000-0002-9740-839X brocher@usgs.gov","orcid":"https://orcid.org/0000-0002-9740-839X","contributorId":262,"corporation":false,"usgs":true,"family":"Brocher","given":"Thomas","email":"brocher@usgs.gov","middleInitial":"M.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":788849,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70210024,"text":"70210024 - 1987 - A geologic interpretation of seismic-refraction results in northeastern California ","interactions":[],"lastModifiedDate":"2020-05-11T20:42:56.640536","indexId":"70210024","displayToPublicDate":"1987-05-11T15:37:45","publicationYear":"1987","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":"A geologic interpretation of seismic-refraction results in northeastern California ","docAbstract":"<p>In 1981, the U.S. Geological Survey conducted a seismic-refraction experiment in northeastern California designed to study the Klamath Mountains, Cascade Range, Modoc Plateau, and Basin and Range provinces. Key profiles include 135-km-long, north-south lines in the Klamath Mountains and Modoc Plateau provinces and a 260-km-long, east-west line crossing all of the provinces.</p><p>The seismic-velocity models for the Klamath and Modoc lines are comparatively homogeneous laterally but are quite different from each other. The Klamath model is finely layered from the surface to at least 14-km depth, consisting of a series of high-velocity layers (6.1–6.7 km/s), ranging in thickness from 1 to 4 km, with alternating positive and negative velocity gradients. A layer with an unreversed velocity of 7.0 km/s extends from 14 km to an unknown depth. The Modoc model, in contrast, is relatively thickly layered and has lower velocities than does the Klamath model at all depths down to 25 km. An upper layer, 4.5 km thick, of low-velocity material (2.1–4.4 km/s) overlies a basement with a considerably higher velocity (6.2 km/s). Velocity increases slowly with depth, with a small velocity step (to 6.4 km/s) at 11 km and a 7.0-km/s layer beginning at 25-km depth. Moho is probably 38–45 km deep under the Modoc Plateau, but its depth is unknown under the Klamath Mountains. A combined velocity-density model for the east-west line consists of a western part similar in configuration to the Klamath velocity model, an eastern part similar to the Modoc velocity model, and laterally changing velocity-density structure in between, in the Cascade Range.</p><p>Beneath its upper layer, the velocity model for the Modoc Plateau is similar to that determined by other researchers for the adjacent Sierra Nevada. The velocity model is unlike those for rift areas, to which the Modoc Plateau has been compared by some authors. We theorize that beneath a veneer of volcanic and sedimentary rocks (the upper layer), the Modoc Plateau is underlain by a basement of granitic and metamorphic rocks that, like rocks in the Sierra Nevada, are the roots of one or more magmatic arcs.</p><p>The fine layering in the Klamath seismic-velocity model is consistent with the geologic structure of the Klamath Mountains, characterized by imbricate thrusting of oceanic rock layers of various compositions and ages. Independent modeling of aeromagnetic data indicates that the base of the Trinity ultramafic sheet, the second major rock layer down in the structural sequence, corresponds to a velocity step to 6.7 km/s at 7-km depth in our model. The 6.7-km/s layer beneath the Trinity ultramafic sheet apparently corresponds to rocks of the central metamorphic belt, which are mafic schists. Rock units structurally deeper than rocks of the central metamorphic belt can be correlated with velocity layers below the 6.7-km/s layer, but with less certainty.</p><p>In the model for the east-west line, the region of laterally changing velocity structure beneath the Cascade Range includes a 10-km step down to the east in the top of the 7.0-km/s layer. This region of lateral velocity change we interpret to be a fault, fold, or intrusive contact (or some combination of the three) between the stack of oceanic rock layers that underlie the Klamath Mountains and the buried roots of magmatic arcs inferred to underlie the Modoc Plateau. Magmas forming the modern Cascade Range arc apparently rise through this region.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1987)98<53:AGIOSR>2.0.CO;2","usgsCitation":"Fuis, G.S., Zucca, J., Mooney, W.D., and Milkereit, B., 1987, A geologic interpretation of seismic-refraction results in northeastern California : GSA Bulletin, v. 98, no. 1, p. 53-65, https://doi.org/10.1130/0016-7606(1987)98<53:AGIOSR>2.0.CO;2.","productDescription":"13 .p.","startPage":"53","endPage":"65","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":374606,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Northeastern California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -123.26660156249999,\n              38.34165619279595\n            ],\n            [\n              -119.88281249999999,\n              38.34165619279595\n            ],\n            [\n              -119.88281249999999,\n              42.22851735620852\n            ],\n            [\n              -123.26660156249999,\n              42.22851735620852\n            ],\n            [\n              -123.26660156249999,\n              38.34165619279595\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"98","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Fuis, Gary S. 0000-0002-3078-1544 fuis@usgs.gov","orcid":"https://orcid.org/0000-0002-3078-1544","contributorId":2639,"corporation":false,"usgs":true,"family":"Fuis","given":"Gary","email":"fuis@usgs.gov","middleInitial":"S.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":788844,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zucca, J.J.","contributorId":104914,"corporation":false,"usgs":true,"family":"Zucca","given":"J.J.","affiliations":[],"preferred":false,"id":788845,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mooney, Walter D. 0000-0002-5310-3631 mooney@usgs.gov","orcid":"https://orcid.org/0000-0002-5310-3631","contributorId":3194,"corporation":false,"usgs":true,"family":"Mooney","given":"Walter","email":"mooney@usgs.gov","middleInitial":"D.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":788846,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Milkereit, Bernd","contributorId":62752,"corporation":false,"usgs":false,"family":"Milkereit","given":"Bernd","affiliations":[],"preferred":false,"id":788847,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70247997,"text":"70247997 - 1987 - Evidence for a shallow pluton beneath the Goat Rocks Wilderness, Washington, from gravity and magnetic data","interactions":[],"lastModifiedDate":"2023-08-30T18:29:17.509437","indexId":"70247997","displayToPublicDate":"1987-05-10T13:10:21","publicationYear":"1987","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":"Evidence for a shallow pluton beneath the Goat Rocks Wilderness, Washington, from gravity and magnetic data","docAbstract":"<p><span>A gravity and aeromagnetic study was conducted in and adjacent to the Goat Rocks Wilderness area, Washington. This work was done in conjunction with geologic and geochemical studies which were critically important to our interpretation. The Bouguer gravity anomaly map displays a large central positive gravity anomaly and three superimposed smaller positive anomalies. The main anomaly, about 26 by 11 km with an amplitude of about 16 mGal seems to delineate a dense large pluton or sheeted dike complex intruding less dense, older volcanic and sedimentary rocks lying directly below the volcano. The pluton or sheeted dike complex may have fed the Goat Rocks volcano throughout its 1–2 m.y. history. Three small feeders, mapped on the surface as andesite intrusions, may be the cause of three smaller gravity anomalies superimposed on the main anomaly. The magnetic anomaly maps also exhibit a large central anomaly whose source is the Goat Rocks pluton. The magnetic data suggest that the three shallow intrusive cupolas have undergone a significant amount of hydrothermal alteration. In addition, to some extent the magnetic data reflect the terrain of the area. Topographic highs produce magnetic highs, and topographic lows produce magnetic lows. The deviations from this pattern delineate subsurface geology. Magnetic lows may be of particular interest in locating zones of mineralization where magnetic minerals have been altered and have become significantly less magnetic.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB092iB06p04867","usgsCitation":"Williams, D.L., and Finn, C.A., 1987, Evidence for a shallow pluton beneath the Goat Rocks Wilderness, Washington, from gravity and magnetic data: Journal of Geophysical Research B: Solid Earth, v. 92, no. B6, p. 4867-4880, https://doi.org/10.1029/JB092iB06p04867.","productDescription":"14 p.","startPage":"4867","endPage":"4880","costCenters":[],"links":[{"id":420313,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Goat Rocks Wilderness","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -121.73670660795202,\n              46.68728048256335\n            ],\n            [\n              -121.73670660795202,\n              46.35369936378592\n            ],\n            [\n              -121.12318061423747,\n              46.35369936378592\n            ],\n            [\n              -121.12318061423747,\n              46.68728048256335\n            ],\n            [\n              -121.73670660795202,\n              46.68728048256335\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"92","issue":"B6","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"Williams, David L.","contributorId":10028,"corporation":false,"usgs":true,"family":"Williams","given":"David","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":881461,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Finn, Carol A. 0000-0002-6178-0405 cfinn@usgs.gov","orcid":"https://orcid.org/0000-0002-6178-0405","contributorId":1326,"corporation":false,"usgs":true,"family":"Finn","given":"Carol","email":"cfinn@usgs.gov","middleInitial":"A.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":881462,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70210009,"text":"70210009 - 1987 - 15N/14N variations in Cretaceous Atlantic sedimentary sequences: Implication for past changes in marine nitrogen biogeochemistry","interactions":[],"lastModifiedDate":"2020-05-11T12:19:03.94695","indexId":"70210009","displayToPublicDate":"1987-05-08T13:46:12","publicationYear":"1987","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"displayTitle":"<sup>15</sup>N/<sup>14</sup>N variations in Cretaceous Atlantic sedimentary sequences: Implication for past changes in marine nitrogen biogeochemistry","title":"15N/14N variations in Cretaceous Atlantic sedimentary sequences: Implication for past changes in marine nitrogen biogeochemistry","docAbstract":"<p>At two locations in the Atlantic Ocean (DSDP Sites 367 and 530) early to middle Cretaceous organic-carbon-rich beds (“black shales”) were found to have significantly lower δ<sup>15</sup>N values (lower<sup>15</sup>N/<sup>14</sup>N ratios) than adjacent organic-carbon-poor beds (white limestones or green claystones). While these lithologies are of marine origin, the black strata in particular have °<sup>15</sup>N values that are significantly lower than those previously found in the marine sediment record and most contemporary marine nitrogen pools. In contrast, black, organic-carbon-rich beds at a third site (DSDP Site 603) contain predominantly terrestrial organic matter and have C- and N-isotopic compositions similar to organic matter of modern terrestrial origin.</p><p>The recurring<sup>15</sup>N depletion in the marine-derived Cretaceous sequences prove that the nitrogen they contain is the end result of an episodic and atypical biogeochemistry. Existing isotopic and other data indicate that the low<sup>15</sup>N relative abundance is the consequence of pelagic rather than post-depositional processes. Reduced ocean circulation, increased denitrification, and, hence, reduced euphotic zone nitrate availability may have led to Cretaceous phytoplankton assemblages that were periodically dominated by N<sub>2</sub>-fixing blue-green algae, a possible source of this sediment<sup>15</sup>N-depletion. Lack of parallel isotopic shifts in Cretaceous terrestrially-derived nitrogen (Site 603) argues that the above change in nitrogen cycling during this period did not extend beyond the marine environment.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(87)90201-9","usgsCitation":"Rau, G.H., Arthur, M., and Dean, W.E., 1987, 15N/14N variations in Cretaceous Atlantic sedimentary sequences: Implication for past changes in marine nitrogen biogeochemistry: Earth and Planetary Science Letters, v. 82, no. 3-4, p. 269-279, https://doi.org/10.1016/0012-821X(87)90201-9.","productDescription":"11 p.","startPage":"269","endPage":"279","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":374586,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"82","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Rau, Greg H.","contributorId":78963,"corporation":false,"usgs":false,"family":"Rau","given":"Greg","email":"","middleInitial":"H.","affiliations":[{"id":6949,"text":"University of California, Santa Cruz","active":true,"usgs":false}],"preferred":false,"id":788790,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Arthur, M.A.","contributorId":24791,"corporation":false,"usgs":true,"family":"Arthur","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":788791,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dean, Walter E. dean@usgs.gov","contributorId":1801,"corporation":false,"usgs":true,"family":"Dean","given":"Walter","email":"dean@usgs.gov","middleInitial":"E.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":788792,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
]}