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,{"id":70206976,"text":"70206976 - 1970 - Geochemical balance of a small watershed and its geomorphic implications","interactions":[],"lastModifiedDate":"2019-12-03T08:00:30","indexId":"70206976","displayToPublicDate":"1970-12-31T12:32:25","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical balance of a small watershed and its geomorphic implications","docAbstract":"<p><span>A detailed input-output study of a small forested watershed draining the Wissahickon Formation in the Piedmont of Maryland revealed that chemical solution is five times as effective in removing material as is mechanical erosion. Solution weathering removes 16.9 tons/sq mi/yr of material compared with 3.2 tons/sq mi/yr by mechanical erosion. Plant activity during the growing season increased the concentration of silica, bicarbonate, calcium, and potassium, thus increasing total dissolved solids by one-third. Autumn leaf fall also caused a short-term increase of these ions. Rainfall does not simply dilute floodwaters as the concentration of sulfate, potassium, and calcium increases whereas silica and bicarbonate decrease in concentration during a flood cycle. Our data suggest that during the first half of a flood cycle, both the flood water and the dissolved solids in it come from an area in and immediately adjacent to the flood plain. The weathering model derived from our study suggests that on a long-term basis approximately one-half of the erosion of the Pond Branch watershed is caused by chemical solution of the silicate minerals kaolinite, vermiculite, biotite, and oligoclase. This contrasts to short-term ratio of solutional to mechanical weathering of five to one.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3015:GBOASW]2.0.CO;2","issn":"00167606","usgsCitation":"Cleaves, E., Godfrey, A., and Bricker, O., 1970, Geochemical balance of a small watershed and its geomorphic implications: Geological Society of America Bulletin, v. 81, no. 10, p. 3015-3032, https://doi.org/10.1130/0016-7606(1970)81[3015:GBOASW]2.0.CO;2.","productDescription":"18 p. ","startPage":"3015","endPage":"3032","costCenters":[],"links":[{"id":369809,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland 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 \"}}]}","volume":"81","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Cleaves, E.T.","contributorId":41148,"corporation":false,"usgs":true,"family":"Cleaves","given":"E.T.","email":"","affiliations":[],"preferred":false,"id":776437,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Godfrey, A.E.","contributorId":57245,"corporation":false,"usgs":true,"family":"Godfrey","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":776438,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bricker, O.P.","contributorId":33717,"corporation":false,"usgs":true,"family":"Bricker","given":"O.P.","affiliations":[],"preferred":false,"id":776439,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70207319,"text":"70207319 - 1970 - A revision of stratigraphic nomenclature for middle precambrian rocks in Northern Michigan","interactions":[],"lastModifiedDate":"2019-12-19T13:50:31","indexId":"70207319","displayToPublicDate":"1970-12-31T07:19:14","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"A revision of stratigraphic nomenclature for middle precambrian rocks in Northern Michigan","docAbstract":"<p><span>The name Marquette Range Supergroup is proposed to supplant the term Animikie Series for middle Precambrian strata of the Northern Peninsula of Michigan and adjacent areas of Wisconsin. The Marquette Range Supergroup consists of the Chocolay, Menominee, Baraga, and Paint River Groups, as defined in previous literature. We feel that this new name to apply to Northern Peninsula rock units is appropriate, as continued investigations have failed to show unequivocal correlation between middle Precambrian rocks of Michigan and the Huronian Supergroup of Ontario. Although the equivalence of the Animikie Group in Ontario and Minnesota with parts of the Michigan rocks is likely, the Stratigraphic complexity of the Michigan sequence requires supergroup rank. The inherent confusion of an Animikie Group in Ontario and Minnesota, and an Animikie Supergroup in Michigan, makes a local name such as Marquette Range Supergroup preferable to Animikie for the middle Precambrian rocks of Michigan. © 1970, The Geological Society of America, Inc.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[2843:AROSNF]2.0.CO;2","issn":"00167606","usgsCitation":"Cannon, W., and Gair, J.E., 1970, A revision of stratigraphic nomenclature for middle precambrian rocks in Northern Michigan: Geological Society of America Bulletin, v. 81, no. 9, p. 2843-2846, https://doi.org/10.1130/0016-7606(1970)81[2843:AROSNF]2.0.CO;2.","productDescription":"4 p. ","startPage":"2843","endPage":"2846","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":370332,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States ","state":"Michigan ","otherGeospatial":"Northern Peninsula","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -90.2197265625,\n              46.694667307773116\n            ],\n            [\n              -90.04394531249999,\n              46.36209301204985\n            ],\n            [\n              -87.86865234374999,\n              45.9511496866914\n            ],\n            [\n              -86.66015624999999,\n              47.18971246448421\n            ],\n            [\n              -88.330078125,\n              47.916342040161155\n            ],\n            [\n              -90.2197265625,\n              46.694667307773116\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Cannon, W.F. 0000-0002-2699-8118","orcid":"https://orcid.org/0000-0002-2699-8118","contributorId":70382,"corporation":false,"usgs":true,"family":"Cannon","given":"W.F.","affiliations":[],"preferred":false,"id":777695,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gair, J. E.","contributorId":82978,"corporation":false,"usgs":true,"family":"Gair","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":777696,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70197848,"text":"70197848 - 1970 - Surface faulting and related effects","interactions":[],"lastModifiedDate":"2018-06-21T13:09:28","indexId":"70197848","displayToPublicDate":"1970-12-31T00:00:00","publicationYear":"1970","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Surface faulting and related effects","docAbstract":"<p>No abstract available.</p>","largerWorkTitle":"Earthquake Engineering","language":"English","publisher":"Prentice-Hall","publisherLocation":"Englewood Cliffs, N.J.","usgsCitation":"Bonilla, M.G., 1970, Surface faulting and related effects, chap. <i>of</i> Earthquake Engineering, p. 47-74.","productDescription":"38 p.","startPage":"47","endPage":"74","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":355271,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"editors":[{"text":"Wiegel, R.L.","contributorId":205876,"corporation":false,"usgs":false,"family":"Wiegel","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":738751,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Bonilla, Manuel G.","contributorId":74384,"corporation":false,"usgs":true,"family":"Bonilla","given":"Manuel","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":738750,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70197778,"text":"70197778 - 1970 - Geology of the Klamath Mountains","interactions":[],"lastModifiedDate":"2018-06-20T09:18:59","indexId":"70197778","displayToPublicDate":"1970-12-31T00:00:00","publicationYear":"1970","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5710,"text":"California Division of Mines and Geology Bulletin","active":true,"publicationSubtype":{"id":2}},"title":"Geology of the Klamath Mountains","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"California Division of Mines and Geology","usgsCitation":"Irwin, W., 1970, Geology of the Klamath Mountains: California Division of Mines and Geology Bulletin, v. 23, no. 7, 3 p.","productDescription":"3 p.","startPage":"135","endPage":"137","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":355192,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Irwin, W. P.","contributorId":82347,"corporation":false,"usgs":true,"family":"Irwin","given":"W. P.","affiliations":[],"preferred":false,"id":738470,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70175607,"text":"70175607 - 1970 - Selected ground-water data in the eugene-springfield area, southern Willamette Valley, oregon","interactions":[],"lastModifiedDate":"2016-08-17T13:00:54","indexId":"70175607","displayToPublicDate":"1970-12-28T00:00:00","publicationYear":"1970","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":115,"text":"Ground Water Report","active":false,"publicationSubtype":{"id":2}},"title":"Selected ground-water data in the eugene-springfield area, southern Willamette Valley, oregon","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"American Geosciences Institute","usgsCitation":"Frank, F.J., and Johnson, N.A., 1970, Selected ground-water data in the eugene-springfield area, southern Willamette Valley, oregon: Ground Water Report.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":326683,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","otherGeospatial":"Willamette Valley","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57b58b5ce4b03bcb0104bc6a","contributors":{"authors":[{"text":"Frank, F. J.","contributorId":95037,"corporation":false,"usgs":true,"family":"Frank","given":"F.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":645813,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, Nyra A.","contributorId":173771,"corporation":false,"usgs":false,"family":"Johnson","given":"Nyra","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":645814,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70207549,"text":"70207549 - 1970 - A linear programming and least squares computer method for solving petrologic mixing problems","interactions":[],"lastModifiedDate":"2020-06-04T13:41:16.467859","indexId":"70207549","displayToPublicDate":"1970-12-23T12:01:54","publicationYear":"1970","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 linear programming and least squares computer method for solving petrologic mixing problems","docAbstract":"<p><span>Problems of petrologic mixing have been solved using a two-stage computer-based calculation. First, linear programming is used to obtain an approximate solution and to identify non-negative solution values. Then a conventional least squares calculation is performed using the analyses represented by non-negative solution values as input to yield an optimum set of solution values. The error attached to each solution value is estimated by an empirical procedure. Petrologic application of the program has been demonstrated with three types of calculations: chemical mode, magma mixing, and liquid line of descent.</span></p>","language":"English","publisher":"GSA","doi":"10.1130/0016-7606(1970)81[1995:ALPALS]2.0.CO;2","usgsCitation":"Wright, T., and Doherty, P.C., 1970, A linear programming and least squares computer method for solving petrologic mixing problems: GSA Bulletin, v. 81, no. 7, p. 1995-2008, https://doi.org/10.1130/0016-7606(1970)81[1995:ALPALS]2.0.CO;2.","productDescription":"14 p.","startPage":"1995","endPage":"2008","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":370649,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"81","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Wright, Thomas L. twright@usgs.gov","contributorId":3890,"corporation":false,"usgs":true,"family":"Wright","given":"Thomas L.","email":"twright@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":778430,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Doherty, Patrick C.","contributorId":94372,"corporation":false,"usgs":true,"family":"Doherty","given":"Patrick","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":778431,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70207253,"text":"70207253 - 1970 - Mechanism of the Chilean Earthquakes of May 21 and 22, 1960","interactions":[],"lastModifiedDate":"2020-06-01T19:49:02.036548","indexId":"70207253","displayToPublicDate":"1970-12-13T11:50:07","publicationYear":"1970","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":"Mechanism of the Chilean Earthquakes of May 21 and 22, 1960","docAbstract":"<p>The Chilean earthquake sequence of May 21–22, 1960, was accompanied by linear zones of tectonic warping, including both uplift and subsidence relative to sea level. The region involved is more than 200 km wide and about 1000 km long, and lies along the continental margin between latitude 37° and 48° S. Significant horizontal strains accompanied the vertical movements in parts of the subsided zone for which triangulation data are available. Displacements were initiated near the northern end of the deformed region during the opening earthquake of the sequence (M<sub>s</sub><span>&nbsp;</span>≅ 7.5) on May 21 at 10h 02m 50s GMT and were extended over the remainder of the region during the culminating shock (M<sub>s</sub><span>&nbsp;</span>≅ 8.5) on May 22 at 19h llm 17s GMT. During the latter event, sudden uplift of adjacent portions of the continental shelf and much or all of the continental slope apparently generated the destructive tsunami that immediately followed the main shock.</p><p>Available data suggest that the primary fault or zone of faulting along which displacement occurred probably is a complex thrust fault roughly 1000 km long and at least 60 km wide; it dips eastward at a moderate angle beneath the continental margin and intersects the surface on the continental slope. Dip slip required to satisfy the surface displacements is at least 20 m and perhaps as large as 40 m. There is some evidence that there was a minor component of right-lateral slip on the fault plane.</p>","language":"English","publisher":"GSA","doi":"10.1130/0016-7606(1970)81[1001:MOTCEO]2.0.CO;2","usgsCitation":"Plafker, G., and Savage, J.C., 1970, Mechanism of the Chilean Earthquakes of May 21 and 22, 1960: GSA Bulletin, v. 81, no. 4, p. 1001-1030, https://doi.org/10.1130/0016-7606(1970)81[1001:MOTCEO]2.0.CO;2.","productDescription":"30 p.","startPage":"1001","endPage":"1030","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":370250,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Chile, Peru","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -110.74218749999999,\n              -56.170022982932046\n            ],\n            [\n              -62.9296875,\n              -56.170022982932046\n            ],\n            [\n              -62.9296875,\n              2.4601811810210052\n            ],\n            [\n              -110.74218749999999,\n              2.4601811810210052\n            ],\n            [\n              -110.74218749999999,\n              -56.170022982932046\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Plafker, George","contributorId":3920,"corporation":false,"usgs":false,"family":"Plafker","given":"George","email":"","affiliations":[],"preferred":false,"id":777464,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":777465,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70226521,"text":"70226521 - 1970 - Minor metals of the geochemical environment, health and disease","interactions":[],"lastModifiedDate":"2021-11-22T21:18:03.456809","indexId":"70226521","displayToPublicDate":"1970-12-11T15:07:48","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Minor metals of the geochemical environment, health and disease","docAbstract":"<div class=\"t mf x10 hd y7 ff1 fsb fc0 sc0 ls0 ws0\">The possibility of causal relationships between environmental factors and the occurrence of many&nbsp;degenerative diseases is slowly being recognized. One aspect of the environment -- that concerned with the geochemistry of the rocks, soils, plants, and water -- should be studied carefully and the distribution of minor elements be&nbsp;compared with geographic patterns of animal and human health and disease.</div>","conferenceTitle":"AAAS symposium","conferenceDate":"December 30, 1970","conferenceLocation":"Chicago, IL","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.170.3963.1232","usgsCitation":"Cannon, H., and Hopps, H.C., 1970, Minor metals of the geochemical environment, health and disease: Science, v. 170, no. 3963, p. 1232-1232, https://doi.org/10.1126/science.170.3963.1232.","productDescription":"1 p.","startPage":"1232","endPage":"1232","costCenters":[],"links":[{"id":392016,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"170","issue":"3963","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Cannon, Helen L.","contributorId":96249,"corporation":false,"usgs":true,"family":"Cannon","given":"Helen L.","affiliations":[],"preferred":false,"id":827193,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hopps, Howard C.","contributorId":189752,"corporation":false,"usgs":false,"family":"Hopps","given":"Howard","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":827194,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70010102,"text":"70010102 - 1970 - Sulfur isotope distribution in solfataras, Yellowstone National Park","interactions":[],"lastModifiedDate":"2026-01-30T15:59:37.020583","indexId":"70010102","displayToPublicDate":"1970-12-04T00:00:00","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Sulfur isotope distribution in solfataras, Yellowstone National Park","docAbstract":"Sulfur isotope data on hydrogen sulfide, native sulfur, and sulfates from acid hot-spring areas at Yellowstone National Park suggest that hydrogen sulfide oxidizes to sulfur analogically, whereas sulfur undergoes biological oxidation to sulfuric acid. An exception occurs at Mammoth Hot Springs where hydrogen sulfide apparently undergoes biochemical oxidation to sulfur.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.170.3962.1082","issn":"00368075","usgsCitation":"Schoen, R., and Rye, R.O., 1970, Sulfur isotope distribution in solfataras, Yellowstone National Park: Science, v. 170, no. 3962, p. 1082-1084, https://doi.org/10.1126/science.170.3962.1082.","productDescription":"3 p.","startPage":"1082","endPage":"1084","costCenters":[],"links":[{"id":218625,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Yellowstone National Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -111.14281398716507,\n              44.994167334008324\n            ],\n            [\n              -111.14281398716507,\n              43.8517343685219\n            ],\n            [\n              -109.1390741574205,\n              43.8517343685219\n            ],\n            [\n              -109.1390741574205,\n              44.994167334008324\n            ],\n            [\n              -111.14281398716507,\n              44.994167334008324\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"170","issue":"3962","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9ddae4b08c986b31db1e","contributors":{"authors":[{"text":"Schoen, R.","contributorId":47904,"corporation":false,"usgs":true,"family":"Schoen","given":"R.","email":"","affiliations":[],"preferred":false,"id":357901,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rye, R. O.","contributorId":66208,"corporation":false,"usgs":true,"family":"Rye","given":"R.","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":357902,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70226519,"text":"70226519 - 1970 - Thermal infrared investigations, Arbuckle Mountains, Oklahoma","interactions":[],"lastModifiedDate":"2021-11-22T20:53:26.437644","indexId":"70226519","displayToPublicDate":"1970-12-01T14:35:27","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Thermal infrared investigations, Arbuckle Mountains, Oklahoma","docAbstract":"<p>Thermal-infrared images obtained on flights over the Tishomingo anticline and South Flank areas near Mill Creek in the Arbuckle Mountains, Oklahoma, were used to study the possibility of identifying some common rock types from their diagnostic reflection and emission characteristics, and to evaluate the usefulness of infrared images in structural geologic investigations. The areas flown are underlain by folded and faulted Paleozoic dolomite, limestone, sandstone, shale, and Precambrian granite.</p><p>Images were obtained at 6:00 a.m., 11:00 a.m., and 2:00 p.m. The predawn (6:00 a.m.) image is the most useful in distinguishing rock types. Of particular interest is a thermal contrast of dolomite (warm) and limestone (cool), sufficient to distinguish those rock types and to reveal facies changes between them. Theoretical considerations indicate that this thermal contrast arises from a combination of albedo and thermal-inertia characteristics distinctive of dolomites and limestones in many areas.</p><p>The daytime images display much stratigraphic and structural detail. Small-scale bedding detail is enhanced in the morning images of low-relief areas, and contrasts of alternating formations that form hogbacks and valleys are enhanced in the afternoon images of higher relief areas. The difference in features displayed in morning and afternoon images appears to be a function of the insolation on sunward and shadowed slopes of differing scale. Fault or fracture zones are best displayed in the predawn image; they appear cooler than surrounding ground, because of greater water content and concomitant evaporation. The abundance and throughgoing nature of lineaments (which coincide for the most part with joint systems) are more obvious in the infrared images than in aerial photographs. Lineaments striking northwest are preferentially enhanced in the morning images, and lineaments striking northeast are preferentially shown in the afternoon images. This enhancement cannot be ascribed to the effects of topography, insolation, or wind; it may relate to a combination of ground-water and vegetation effects.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3549:TIIAMO]2.0.CO;2","usgsCitation":"Rowan, L.C., Offield, T., Watson, K., Cannon, P., and Watson, R.D., 1970, Thermal infrared investigations, Arbuckle Mountains, Oklahoma: Bulletin of the Geological Society of America, v. 81, no. 12, p. 3549-3561, https://doi.org/10.1130/0016-7606(1970)81[3549:TIIAMO]2.0.CO;2.","productDescription":"13 p.","startPage":"3549","endPage":"3561","costCenters":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"links":[{"id":392012,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oklahoma","city":"Mill Creek","otherGeospatial":"Arbuckle Mountains, South Flank, Tishomingo anticline","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -97.18780517578125,\n              34.13567837774557\n            ],\n            [\n              -96.57943725585938,\n              34.13567837774557\n            ],\n            [\n              -96.57943725585938,\n              34.496370914707285\n            ],\n            [\n              -97.18780517578125,\n              34.496370914707285\n            ],\n            [\n              -97.18780517578125,\n              34.13567837774557\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Rowan, L. C.","contributorId":40584,"corporation":false,"usgs":true,"family":"Rowan","given":"L.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":827187,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Offield, Terry W.","contributorId":64217,"corporation":false,"usgs":true,"family":"Offield","given":"Terry W.","affiliations":[],"preferred":false,"id":827188,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Watson, Kenneth","contributorId":91109,"corporation":false,"usgs":true,"family":"Watson","given":"Kenneth","email":"","affiliations":[],"preferred":false,"id":827189,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cannon, P. J.","contributorId":83616,"corporation":false,"usgs":true,"family":"Cannon","given":"P. J.","affiliations":[],"preferred":false,"id":827190,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Watson, R. D.","contributorId":96413,"corporation":false,"usgs":true,"family":"Watson","given":"R.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":827191,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70226166,"text":"70226166 - 1970 - Distribution of silver and copper in placer gold derived from the northeastern part of the Colorado Mineral Belt","interactions":[],"lastModifiedDate":"2021-11-15T20:01:07.655321","indexId":"70226166","displayToPublicDate":"1970-12-01T13:49:39","publicationYear":"1970","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":"Distribution of silver and copper in placer gold derived from the northeastern part of the Colorado Mineral Belt","docAbstract":"<div class=\"article-section-wrapper js-article-section js-content-section  \"><p>Placer gold grains from the modern streams originating in the Colorado Mineral Belt were examined for silver and copper content on a quantitative basis utilizing the electron microprobe. The variation among grains from a particular locality is large, but the mean silver content of the interior of the placer gold grains from each locality and (or) the variation in copper content may be of value in distinguishing lode sources and gold mining districts. Microprobe analysis of the interior of gold grains is independent of chemical actions that affect the border of placer gold grains during their transport history, and it is shown that distinct compositional groups of different lode sources may be identified even in a single sample--information that may aid in recognizing the existence of concealed lodes that once contributed to a placer environment.</p></div>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.65.8.937","usgsCitation":"Desborough, G.A., Raymond, W.H., and Iagmin, P.J., 1970, Distribution of silver and copper in placer gold derived from the northeastern part of the Colorado Mineral Belt: Economic Geology, v. 65, no. 8, p. 937-944, https://doi.org/10.2113/gsecongeo.65.8.937.","productDescription":"8 p.","startPage":"937","endPage":"944","costCenters":[],"links":[{"id":391686,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"Colorado Mineral Belt","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -106.10458374023436,\n              39.26415795094216\n            ],\n            [\n              -105.85464477539061,\n              39.26415795094216\n            ],\n            [\n              -105.85464477539061,\n              39.49450361977246\n            ],\n            [\n              -106.10458374023436,\n              39.49450361977246\n            ],\n            [\n              -106.10458374023436,\n              39.26415795094216\n            ]\n          ]\n        ]\n      }\n    },\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -105.57586669921875,\n              39.73253798438173\n            ],\n            [\n              -105.35202026367188,\n              39.73253798438173\n            ],\n            [\n              -105.35202026367188,\n              39.9571224404468\n            ],\n            [\n              -105.57586669921875,\n              39.9571224404468\n            ],\n            [\n              -105.57586669921875,\n              39.73253798438173\n            ]\n          ]\n        ]\n      }\n    },\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -105.49758911132812,\n              39.099160259556236\n            ],\n            [\n              -105.44540405273438,\n              39.099160259556236\n            ],\n            [\n              -105.44540405273438,\n              39.13645165015621\n            ],\n            [\n              -105.49758911132812,\n              39.13645165015621\n            ],\n            [\n              -105.49758911132812,\n              39.099160259556236\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"65","issue":"8","noUsgsAuthors":false,"publicationDate":"1970-12-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Desborough, George A.","contributorId":101661,"corporation":false,"usgs":true,"family":"Desborough","given":"George","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":826701,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Raymond, William H.","contributorId":48555,"corporation":false,"usgs":true,"family":"Raymond","given":"William","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":826702,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Iagmin, Paula J.","contributorId":268801,"corporation":false,"usgs":false,"family":"Iagmin","given":"Paula","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":826703,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70226163,"text":"70226163 - 1970 - Cassiterite as an exsolution product in magnetite, Lost River tin mine, Alaska","interactions":[],"lastModifiedDate":"2021-11-15T19:08:50.493211","indexId":"70226163","displayToPublicDate":"1970-12-01T12:50:10","publicationYear":"1970","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":"Cassiterite as an exsolution product in magnetite, Lost River tin mine, Alaska","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"American Geological Institute","doi":"10.2113/gsecongeo.65.8.1004","usgsCitation":"Desborough, G.A., and Sainsbury, C., 1970, Cassiterite as an exsolution product in magnetite, Lost River tin mine, Alaska: Economic Geology, v. 65, no. 8, p. 1004-1006, https://doi.org/10.2113/gsecongeo.65.8.1004.","productDescription":"3 p.","startPage":"1004","endPage":"1006","costCenters":[],"links":[{"id":391682,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Lost River tin mine, Seward Peninsula","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -166.9379425048828,\n              65.42244359017367\n            ],\n            [\n              -166.83116912841797,\n              65.42244359017367\n            ],\n            [\n              -166.83116912841797,\n              65.44799167917684\n            ],\n            [\n              -166.9379425048828,\n              65.44799167917684\n            ],\n            [\n              -166.9379425048828,\n              65.42244359017367\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"65","issue":"8","noUsgsAuthors":false,"publicationDate":"1970-12-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Desborough, George A.","contributorId":101661,"corporation":false,"usgs":true,"family":"Desborough","given":"George","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":826695,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sainsbury, C.L.","contributorId":99968,"corporation":false,"usgs":true,"family":"Sainsbury","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":826696,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70226547,"text":"70226547 - 1970 - Age of the Morton and Montevideo gneisses and related rocks, southwestern Minnesota","interactions":[],"lastModifiedDate":"2021-11-23T17:34:59.998108","indexId":"70226547","displayToPublicDate":"1970-12-01T11:17:49","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Age of the Morton and Montevideo gneisses and related rocks, southwestern Minnesota","docAbstract":"<p>Granitic gneisses in the vicinities of Morton and Montevideo in the Minnesota River Valley are dated at 3550 m.y. ago and are the oldest rocks so far found in North America. The gneisses were altered in varying degree by younger events of which two have been dated at 2650 m.y. and 1850 m.y. old.</p><p>The event which occurred 2650 m.y. ago was a high-grade metamorphism accompanied by the intrusion of a large volume of granitic magma. Only the U-Pb zircon and the Rb-Sr whole-rock ages survived this event, and both types are discordant. A two-stage model that explains the U-Pb discordant ages combines a primary discordance produced during the metamorphism of 2650 m.y. ago with a secondary discordance developed approximately 100 m.y. ago when uplift and erosion brought the rocks close to the surface. This secondary discordance is also shown by the zircon from granite near Sacred Heart (2650 m.y. old) and from a younger granitic pluton (1850 m.y. old) near Granite Falls.</p><p>The discordance in the Rb-Sr whole-rock ages is attributed primarily to the loss of radiogenic Sr<sup>87</sup><span>&nbsp;</span>that probably occurred largely during the metamorphism of 2650 m.y. ago. Some later loss, however, is indicated in the younger ages of biotite and K-feldspar. Granitic material introduced or mobilized during the metamorphism is also a complicating factor.</p><p>The 1850-m.y.-ago event was a low-grade metamorphism that reset the K-Ar and Rb-Sr ages of biotite in the rocks between Granite Falls and Ortonville. A number of small plutons, ranging in composition from gabbro to granite, and basaltic dikes were emplaced in the gneisses at this time, but only the granitic pluton near Granite Falls has been dated by both U-Pb and Rb-Sr methods.</p><p>The mineral ages show variations that are difficult to explain, and the low apparent ages of the biotite may be in some way related to epeirogeny and the stabilizing of the K-Ar and Rb-Sr systems. The southeastern part of the valley, underlain by the Morton Gneiss and the granite at Sacred Heart, was stabilized 2400 to 2600 m.y. ago, but the northwestern part, underlain by gneiss in the Granite Falls-Montevideo area and by granite in the Ortonville area, was not stabilized until 1700 to 1850 m.y. ago.</p><p>The Morton Gneiss was formed by synkine-matic intrusions of trondhjemitic and granitic magmas, and the structure dates back to the time of the intrusions, 3550 m.y. ago. A similar origin as a synkinematic intrusion of granite is favored to explain the gneiss at Montevideo. The country rock appears to have been a layered series of basaltic lavas, sedimentary rocks, and possibly some sill-like masses of diabase or gabbro. The structure of the region probably was considerably modified during the high-grade metamorphism 2650 m.y. ago.</p><p>The rock types that were involved in the Mortonian event 3550 m.y. ago are similar to more recent crustal rocks and do not represent a protocrust.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3671:AOTMAM]2.0.CO;2","usgsCitation":"Goldich, S., Hedge, C., and Stern, T.W., 1970, Age of the Morton and Montevideo gneisses and related rocks, southwestern Minnesota: Bulletin of the Geological Society of America, v. 81, no. 12, p. 3671-3695, https://doi.org/10.1130/0016-7606(1970)81[3671:AOTMAM]2.0.CO;2.","productDescription":"25 p.","startPage":"3671","endPage":"3695","costCenters":[],"links":[{"id":392054,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Minnesota","city":"Montevideo, Morton","otherGeospatial":"Minnesota River Valley","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -96.448974609375,\n              43.95328204198018\n            ],\n            [\n              -93.416748046875,\n              43.95328204198018\n            ],\n            [\n              -93.416748046875,\n              45.42929873257377\n            ],\n            [\n              -96.448974609375,\n              45.42929873257377\n            ],\n            [\n              -96.448974609375,\n              43.95328204198018\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Goldich, S. S.","contributorId":65536,"corporation":false,"usgs":true,"family":"Goldich","given":"S. S.","affiliations":[],"preferred":false,"id":827312,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hedge, C. E.","contributorId":73611,"corporation":false,"usgs":true,"family":"Hedge","given":"C. E.","affiliations":[],"preferred":false,"id":827313,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stern, T. W.","contributorId":36122,"corporation":false,"usgs":true,"family":"Stern","given":"T.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":827314,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70226466,"text":"70226466 - 1970 - International symposium on hydrometry","interactions":[],"lastModifiedDate":"2021-11-18T15:37:06.583322","indexId":"70226466","displayToPublicDate":"1970-12-01T09:32:00","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"International symposium on hydrometry","docAbstract":"<p>Approximately 520 engineers and scientists from 55 countries attended the International Symposium on Hydrometry held at Koblenz, Federal Republic of Germany, from September 13 through 22, 1970. The symposium was convened by Unesco and organized in cooperation with the World Meteorological Organizations (WMO), Unesco, the National Committee for the International Hydrological Decade of the Federal Republic of Germany, and the International Association of Scientific Hydrology (IASH). The symposium was organized within the framework of the International Hydrological Decade (IHD).</p><p>After a welcoming speech by J. Wallner, Chairman of the Organizing Committee, the opening address was presented by S. Dumitrescu, the representative of Unesco. Introductory statements were then delivered by T. Palas, the representative of WMO; by L.J. Tison, the representative of IASH; and by K. Wittock, the representative of the Government of the Federal Republic of Germany.</p>","conferenceTitle":"International Symposium on Hydrometry","conferenceDate":"September 13-22, 1970","conferenceLocation":"Koblenz, Germany","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO051i012p00884","usgsCitation":"Smoot, G.F., 1970, International symposium on hydrometry: Eos, Transactions, American Geophysical Union, v. 51, no. 12, p. 884-884, https://doi.org/10.1029/EO051i012p00884.","productDescription":"1 p.","startPage":"884","endPage":"884","costCenters":[{"id":629,"text":"Water Resources Division","active":false,"usgs":true}],"links":[{"id":391867,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"12","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","contributors":{"authors":[{"text":"Smoot, George F.","contributorId":34116,"corporation":false,"usgs":true,"family":"Smoot","given":"George","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":827008,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70226481,"text":"70226481 - 1970 - Measurement of ultrasonic velocities in solids under hydrostatic pressure","interactions":[],"lastModifiedDate":"2021-11-19T15:31:42.486005","indexId":"70226481","displayToPublicDate":"1970-12-01T09:27:10","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2516,"text":"Journal of the Acoustical Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Measurement of ultrasonic velocities in solids under hydrostatic pressure","docAbstract":"<div class=\"hlFld-Abstract\"><div class=\"NLM_paragraph\">An<span>&nbsp;</span>ultrasonic<span>&nbsp;</span>method for determining<span>&nbsp;</span>velocity<span>&nbsp;</span>has been developed that is independent of phase‐change errors due to reflection of specimen waves from coupling films. The method also eliminates the possibility of error due to conditions of nonhydrostatic stress at a specimen‐transducer or specimen‐delay line interface. Preliminary data are given for Alcoa 2024‐T4<span>&nbsp;</span>aluminum<span>&nbsp;</span>and are compared with results using the phase‐comparison method.</div></div>","language":"English","publisher":"Acoustical Society of America","doi":"10.1121/1.1912281","usgsCitation":"Peselnick, L., 1970, Measurement of ultrasonic velocities in solids under hydrostatic pressure: Journal of the Acoustical Society of America, v. 48, no. 6A, p. 1324-1327, https://doi.org/10.1121/1.1912281.","productDescription":"4 p.","startPage":"1324","endPage":"1327","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":391919,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"6A","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Peselnick, L.","contributorId":66825,"corporation":false,"usgs":true,"family":"Peselnick","given":"L.","affiliations":[],"preferred":false,"id":827079,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70226850,"text":"70226850 - 1970 - Crystal structure of fabianite, CaB3O5(OH), and comparison with the structure of its synthetic dimorph","interactions":[],"lastModifiedDate":"2021-12-15T15:17:48.505338","indexId":"70226850","displayToPublicDate":"1970-12-01T09:05:33","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":9954,"text":"Zeitschrift für Kristallographie — Crystalline Materials","onlineIssn":"2196-7105","printIssn":"2194-4946","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Crystal structure of fabianite, CaB<sub>3</sub>O<sub>5</sub>(OH), and comparison with the structure of its synthetic dimorph","title":"Crystal structure of fabianite, CaB3O5(OH), and comparison with the structure of its synthetic dimorph","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"DeGruyter","doi":"10.1524/zkri.1970.132.16.241","usgsCitation":"Konnert, J.A., Clark, J., and Christ, C.L., 1970, Crystal structure of fabianite, CaB3O5(OH), and comparison with the structure of its synthetic dimorph: Zeitschrift für Kristallographie — Crystalline Materials, v. 132, no. 6, p. 241-254, https://doi.org/10.1524/zkri.1970.132.16.241.","productDescription":"14 p.","startPage":"241","endPage":"254","costCenters":[],"links":[{"id":392949,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"132","issue":"6","noUsgsAuthors":false,"publicationDate":"2015-09-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Konnert, Judith A.","contributorId":146897,"corporation":false,"usgs":false,"family":"Konnert","given":"Judith","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":828480,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Clark, Joan R.","contributorId":71648,"corporation":false,"usgs":true,"family":"Clark","given":"Joan R.","affiliations":[],"preferred":false,"id":828481,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christ, C. L.","contributorId":270138,"corporation":false,"usgs":false,"family":"Christ","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":828482,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70226754,"text":"70226754 - 1970 - Quartz gabbro and anorthositic gabbro: Markers of offset along the San Andreas fault in the California Coast Ranges","interactions":[],"lastModifiedDate":"2021-12-09T14:37:39.803124","indexId":"70226754","displayToPublicDate":"1970-12-01T08:26:26","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Quartz gabbro and anorthositic gabbro: Markers of offset along the San Andreas fault in the California Coast Ranges","docAbstract":"<p>Large-scale lateral movement on the San Andreas fault zone is suggested by the distribution of gabbroic rocks that may be slivered remnants of oceanic crust. Distinctive and unusual hornblende quartz gabbro and anorthositic gabbro that are virtually identical both petrographically and chemically are exposed at Logan and Gold Hill in the Coast Ranges along the San Andreas fault. The hornblende quartz gabbro is made up of labradorite to bytownite plagioclase, hornblende, and quartz, with very minor biotite and pyroxene, and accessory metallic opaques and apatite. The coarse-grained anorthositic gabbro with anorthositic layers and associated gneiss is made up mainly of labradorite to bytownite plagioclase, hornblende, lesser clinopyroxene, and, locally, orthopyroxene.</p><p>The present 100 mi of separation between these two gabbro bodies is probably due to displacement along the San Andreas fault of what was originally one gabbro mass. Somewhat similar quartz gabbro and anorthositic gabbro associated with ultramafic rocks near Eagle Rest Peak in the San Emigdio Mountains may represent a source for the Logan and Gold Hill slivers. This suggests a minimum right-lateral movement of about 200 mi on the San Andreas fault zone. Anorthositic gabbro clasts from Cretaceous conglomerate in the Gualala area have strong resemblance to gabbroic rocks at Logan, Gold Hill, and Eagle Rest Peak and speculatively suggest 350 mi of right-lateral movement on the fault zone.</p><p>It is tentatively suggested that the gabbro clasts of Gualala may have been shed from a large area of exposed gabbroic oceanic crust, pieces of which occur as fault slivers at Gold Hill and Logan. It is further suggested that the Eagle Rest Peak locality may be a relatively in-place exposure of this gabbroic oceanic crust that lies near a continental-oceanic interface. This interface, thought to represent a fossil subduction zone between Franciscan and Sierran basements, appears to be overlain depositionally by Eocene sedimentary rocks. If these Eocene deposits do “seal over” the possible subduction zone, it suggests that movement on such a zone ceased before the Eocene deposition, and that the new and different pattern of right-lateral movement on the San Andreas fault zone probably began sometime later.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3647:QGAAGM]2.0.CO;2","usgsCitation":"Ross, D.C., 1970, Quartz gabbro and anorthositic gabbro: Markers of offset along the San Andreas fault in the California Coast Ranges: Bulletin of the Geological Society of America, v. 81, no. 12, p. 3647-3661, https://doi.org/10.1130/0016-7606(1970)81[3647:QGAAGM]2.0.CO;2.","productDescription":"15 p.","startPage":"3647","endPage":"3661","costCenters":[],"links":[{"id":392677,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Coast Ranges, San Andreas fault","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -117.2900390625,\n              32.52828936482526\n            ],\n            [\n              -115.13671875,\n              32.65787573695528\n            ],\n            [\n              -119.37744140625,\n              35.06597313798418\n            ],\n            [\n              -121.9482421875,\n              38.54816542304656\n            ],\n            [\n              -122.62939453125001,\n              40.49709237269567\n            ],\n            [\n              -124.38720703124999,\n              40.34654412118006\n            ],\n            [\n              -123.92578125,\n              39.690280594818034\n            ],\n            [\n              -123.94775390625,\n              38.993572058209466\n            ],\n            [\n              -122.25585937500001,\n              36.65079252503471\n            ],\n            [\n              -121.97021484374999,\n              36.08462129606931\n            ],\n            [\n              -120.87158203125,\n              35.02999636902566\n            ],\n            [\n              -120.87158203125,\n              34.470335121217474\n            ],\n            [\n              -119.50927734374999,\n              34.23451236236987\n            ],\n            [\n              -117.88330078125,\n              33.33970700424026\n            ],\n            [\n              -117.2900390625,\n              32.52828936482526\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ross, Donald C.","contributorId":146987,"corporation":false,"usgs":true,"family":"Ross","given":"Donald","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":828164,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70226539,"text":"70226539 - 1970 - Eocene age of the Adak ‘Paleozoic (?)’ rocks, Aleutian Islands, Alaska","interactions":[],"lastModifiedDate":"2021-11-23T14:40:46.622797","indexId":"70226539","displayToPublicDate":"1970-12-01T08:23:39","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Eocene age of the Adak ‘Paleozoic (?)’ rocks, Aleutian Islands, Alaska","docAbstract":"<p>In 1948, several specimens identified as the plant genus Annularia, a primitive horsetail of Pennsylvanian or Permian age, were found in tuffaceous sandstone exposed near the northern end of Adak Island, Alaska. These beds form the basal part of the Andrew Lake Formation, a newly named sequence of marine sedimentary rocks that is more than 850 m thick, and, in the main, consists of northwest-dipping tuffaceous sandstone, siltstone, shale, and siliceous siltstone and shale interbedded with basaltic flows or penecontemporaneous(?) sills (or both) a few tens of meters thick. This formation rests depositionally(?) on the Finger Bay Volcanics, the massive and intensely altered andesitic and basaltic flows and pyroclastic rocks that form the bulk of Adak Island.</p><p>Mollusks, foraminifers, sponge spicules, and fish scales and skeletal remains occur in the lower 350 m of the section immediately overlying the basal “Annularia”-bearing beds. Included in this fauna is the pecten Pro-peamussium (cf. P. stanfordensis Arnold), of probable Eocene age; the associated foraminiferal fauna is provincially considered to be of late Eocene (Narizian) age, and the fish scales are similar to those found in the Narizian and Refugian (Eocene and Oligocene) of California. Examination of the matrix surrounding specimens of “Annularia” revealed a substantial dinoflagellate flora—establishing that the “Annularia”-<i>bearing</i><span>&nbsp;</span>beds are themselves marine units of middle or late Eocene age.</p><p>The Andrew Lake Formation probably accumulated in a perched basin along the crestal region of an early Tertiary Aleutian ridge. Accordingly, there is no evidence for a Paleozoic Aleutian ridge. There is only scant evidence that the ridge existed in Mesozoic time.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3583:EAOTAP]2.0.CO;2","usgsCitation":"Scholl, D.W., Greene, H., and Marlow, M.S., 1970, Eocene age of the Adak ‘Paleozoic (?)’ rocks, Aleutian Islands, Alaska: Bulletin of the Geological Society of America, v. 81, no. 12, p. 3583-3591, https://doi.org/10.1130/0016-7606(1970)81[3583:EAOTAP]2.0.CO;2.","productDescription":"9 p.","startPage":"3583","endPage":"3591","costCenters":[{"id":645,"text":"Western Coastal and Marine Geology","active":false,"usgs":true}],"links":[{"id":392045,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Adak Island, Aleutian Islands, Andrew Lake","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -176.7267608642578,\n              51.79545189800759\n            ],\n            [\n              -176.57844543457028,\n              51.8557147498621\n            ],\n            [\n              -176.58668518066406,\n              51.86207583664755\n            ],\n            [\n              -176.6168975830078,\n              51.85698703916729\n            ],\n            [\n              -176.65054321289062,\n              51.85529064543267\n            ],\n            [\n              -176.62994384765625,\n              51.85995557431279\n            ],\n            [\n              -176.62376403808594,\n              51.866740062051775\n            ],\n            [\n              -176.61827087402344,\n              51.89895240691636\n            ],\n            [\n              -176.572265625,\n              51.91081429480403\n            ],\n            [\n              -176.5509796142578,\n              51.90530737927636\n            ],\n            [\n              -176.53518676757812,\n              51.927754415373855\n            ],\n            [\n              -176.56539916992188,\n              51.9493437994359\n            ],\n            [\n              -176.5496063232422,\n              51.96584631886286\n            ],\n            [\n              -176.5550994873047,\n              51.9979876241961\n            ],\n            [\n              -176.58531188964844,\n              52.005173970555695\n            ],\n            [\n              -176.6210174560547,\n              51.99587377334005\n            ],\n            [\n              -176.6333770751953,\n              51.98022817480167\n            ],\n            [\n              -176.63475036621094,\n              51.96330786509095\n            ],\n            [\n              -176.66427612304688,\n              51.956961101676114\n            ],\n            [\n              -176.73568725585935,\n              51.973460817611695\n            ],\n            [\n              -176.759033203125,\n              51.96669243817262\n            ],\n            [\n              -176.7707061767578,\n              51.96965372996562\n            ],\n            [\n              -176.79336547851562,\n              51.96203858429277\n            ],\n            [\n              -176.81671142578125,\n              51.93029488216276\n            ],\n            [\n              -176.8022918701172,\n              51.90361280788357\n            ],\n            [\n              -176.7748260498047,\n              51.887934991741986\n            ],\n            [\n              -176.7665863037109,\n              51.868436024111126\n            ],\n            [\n              -176.79542541503906,\n              51.84426252720166\n            ],\n            [\n              -176.78306579589844,\n              51.8166804081913\n            ],\n            [\n              -176.76109313964844,\n              51.798424491278745\n            ],\n            [\n              -176.7267608642578,\n              51.79545189800759\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Scholl, David W. 0000-0001-6500-6962 dscholl@usgs.gov","orcid":"https://orcid.org/0000-0001-6500-6962","contributorId":3738,"corporation":false,"usgs":true,"family":"Scholl","given":"David","email":"dscholl@usgs.gov","middleInitial":"W.","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":827284,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Greene, H. Gary","contributorId":38958,"corporation":false,"usgs":true,"family":"Greene","given":"H. Gary","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":827285,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Marlow, Michael S.","contributorId":72775,"corporation":false,"usgs":true,"family":"Marlow","given":"Michael","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":827286,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70226160,"text":"70226160 - 1970 - Graptolite succession across the Ordovician–Silurian boundary in south-eastern Alaska","interactions":[],"lastModifiedDate":"2021-11-15T14:03:48.567554","indexId":"70226160","displayToPublicDate":"1970-12-01T07:53:23","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2545,"text":"Journal of the Geological Society","active":true,"publicationSubtype":{"id":10}},"title":"Graptolite succession across the Ordovician–Silurian boundary in south-eastern Alaska","docAbstract":"<div id=\"abstract-1\" class=\"section abstract\"><p id=\"p-2\">The first discovery in North America of a succession of graptolite faunas across the Ordovician–Silurian boundary has been made on Esquibel Island, in south-eastern Alaska, where five graptolite zones are represented in an 18 m interval of shale in the Descon Formation. Despite the thinness of the graptolite zones, no stratigraphical breaks can be inferred from more complete graptolite successions known elsewhere. The Alaskan faunas can be closely correlated with those of the standard British zones—the<span>&nbsp;</span><i>Dicellograptus anceps</i><span>&nbsp;</span>Zone (uppermost Ordovician), the<span>&nbsp;</span><i>Glyptograptus persculptus</i><span>&nbsp;</span>Zone (lowermost Silurian) and the immediately overlying<span>&nbsp;</span><i>Akidograptus acuminatus, Orthograptus vesiculosus</i><span>&nbsp;</span>and<span>&nbsp;</span><i>Monograptus cyphus</i><span>&nbsp;</span>Zones of the Lower Silurian. They thus give evidence of the cosmopolitan distribution of graptolite faunas during latest Ordovician and earliest Silurian time.</p></div>","language":"English","publisher":"Geological Society of London","doi":"10.1144/gsjgs.126.1.0319","usgsCitation":"Churkin, M., Carter, C., and Eberlein, G.D., 1970, Graptolite succession across the Ordovician–Silurian boundary in south-eastern Alaska: Journal of the Geological Society, v. 126, p. 319-330, https://doi.org/10.1144/gsjgs.126.1.0319.","productDescription":"15  p.","startPage":"319","endPage":"330","costCenters":[],"links":[{"id":391679,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Esquibel Island","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -133.54740142822266,\n              55.65318544107807\n            ],\n            [\n              -133.56765747070312,\n              55.64776138180531\n            ],\n            [\n              -133.56971740722656,\n              55.65454133850121\n            ],\n            [\n              -133.59821319580075,\n              55.650473505359464\n            ],\n            [\n              -133.60301971435547,\n              55.64369284426719\n            ],\n            [\n              -133.60301971435547,\n              55.6307094465468\n            ],\n            [\n              -133.5879135131836,\n              55.61539513584262\n            ],\n            [\n              -133.5776138305664,\n              55.620629813782976\n            ],\n            [\n              -133.5776138305664,\n              55.62411921078643\n            ],\n            [\n              -133.57040405273438,\n              55.62489459015995\n            ],\n            [\n              -133.56491088867188,\n              55.63303514752997\n            ],\n            [\n              -133.55632781982422,\n              55.63439174269151\n            ],\n            [\n              -133.55392456054688,\n              55.640398956687356\n            ],\n            [\n              -133.54362487792966,\n              55.64291783681519\n            ],\n            [\n              -133.54740142822266,\n              55.65318544107807\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"126","noUsgsAuthors":false,"publicationDate":"2022-04-05","publicationStatus":"PW","contributors":{"authors":[{"text":"Churkin, Michael Jr.","contributorId":62566,"corporation":false,"usgs":true,"family":"Churkin","given":"Michael","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":826689,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carter, Claire","contributorId":88336,"corporation":false,"usgs":true,"family":"Carter","given":"Claire","email":"","affiliations":[],"preferred":false,"id":826690,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Eberlein, George Donald","contributorId":268798,"corporation":false,"usgs":false,"family":"Eberlein","given":"George","email":"","middleInitial":"Donald","affiliations":[],"preferred":false,"id":826691,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70226520,"text":"70226520 - 1970 - Radial movements in the western Wyoming salient of the Cordilleran overthrust belt: Discussion","interactions":[],"lastModifiedDate":"2021-11-22T21:02:10.707259","indexId":"70226520","displayToPublicDate":"1970-11-01T14:55:47","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Radial movements in the western Wyoming salient of the Cordilleran overthrust belt: Discussion","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3503:RMITWW]2.0.CO;2","usgsCitation":"Tooker, E.W., 1970, Radial movements in the western Wyoming salient of the Cordilleran overthrust belt: Discussion: Bulletin of the Geological Society of America, v. 81, no. 11, p. 3503-3506, https://doi.org/10.1130/0016-7606(1970)81[3503:RMITWW]2.0.CO;2.","productDescription":"4 p.","startPage":"3503","endPage":"3506","costCenters":[],"links":[{"id":392013,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Cordilleran overthrust belt","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -111.060791015625,\n              40.97160353279909\n            ],\n            [\n              -109.544677734375,\n              40.97160353279909\n            ],\n            [\n              -109.544677734375,\n              42.819580715795915\n            ],\n            [\n              -111.060791015625,\n              42.819580715795915\n            ],\n            [\n              -111.060791015625,\n              40.97160353279909\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"81","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Tooker, E. W.","contributorId":102071,"corporation":false,"usgs":true,"family":"Tooker","given":"E.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":827192,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70226168,"text":"70226168 - 1970 - Similarities, differences, and some genetic problems of the Wyoming and Colorado plateau types of uranium deposits in sandstone","interactions":[],"lastModifiedDate":"2021-11-15T20:32:23.502527","indexId":"70226168","displayToPublicDate":"1970-11-01T14:19:14","publicationYear":"1970","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":"Similarities, differences, and some genetic problems of the Wyoming and Colorado plateau types of uranium deposits in sandstone","docAbstract":"<div class=\"article-section-wrapper js-article-section js-content-section  \"><p>Uranium deposits of the Wyoming roll type and the Colorado Plateau peneconcordant type are the principal domestic resources of uranium. Both types occur in lenticular sandstone beds of continental origin, have a similar suite of elements and minerals, are associated with mildly altered rock, and are thought to have formed by reduction precipitation from ground waters before significant regional deformation. They differ in several respects. The Wyoming deposits are in unlithified sandstone that is highly arkosic, whereas the Colorado Plateau deposits are in lithified sandstone that is only slightly to moderately arkosic. Uranium is the only ore metal in the Wyoming deposits, whereas vanadium or copper is more abundant than uranium in some of the Plateau deposits. The Wyoming deposits are elongate crescent-shaped bodies that extend vertically through, or partly through, a sandstone unit and which are scattered, like widely spaced beads on a string, along miles-long interfaces between oxidized (altered) and unoxidized sandstone, whereas the Plateau deposits are thin tabular layers that are nearly concordant to bedding and which occur as discrete bodies, like raisins in raisin bread, enveloped in rock altered by reduction. The Wyoming ore rolls and interfaces were dynamic, having been pushed downdip by downward-moving oxygen-bearing water that passed through the interfaces and deposited the ore minerals on the reducing side, whereas the Plateau deposits seemingly formed as static bodies, localized by intensive reducing \"patches\" in a mildly reducing environment. These differences focus attention on genetic problems relating to the Eh of the ore-bearing and altering solutions, the shape and localization of deposits, and the source of the uranium.</p></div>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.65.7.778","usgsCitation":"Fischer, R.P., 1970, Similarities, differences, and some genetic problems of the Wyoming and Colorado plateau types of uranium deposits in sandstone: Economic Geology, v. 65, no. 7, p. 778-784, https://doi.org/10.2113/gsecongeo.65.7.778.","productDescription":"7 p.","startPage":"778","endPage":"784","costCenters":[],"links":[{"id":391693,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, Colorado, New Mexico, South Dakota, Utah, Wyoming","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              -111.81884765624999,\n              33.88865750124075\n            ],\n            [\n              -106.5234375,\n              33.88865750124075\n            ],\n            [\n              -106.5234375,\n              39.198205348894795\n            ],\n            [\n              -111.81884765624999,\n              39.198205348894795\n            ],\n            [\n              -111.81884765624999,\n              33.88865750124075\n            ]\n          ]\n        ]\n      }\n    },\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -105.77636718749999,\n              43.03677585761058\n            ],\n            [\n              -102.3486328125,\n              43.03677585761058\n            ],\n            [\n              -102.3486328125,\n              44.99588261816546\n            ],\n            [\n              -105.77636718749999,\n              44.99588261816546\n            ],\n            [\n              -105.77636718749999,\n              43.03677585761058\n            ]\n          ]\n        ]\n      }\n    },\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -108.896484375,\n              41.32732632036622\n            ],\n            [\n              -106.5234375,\n              41.32732632036622\n            ],\n            [\n              -106.5234375,\n              43.02071359427862\n            ],\n            [\n              -108.896484375,\n              43.02071359427862\n            ],\n            [\n              -108.896484375,\n              41.32732632036622\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"65","issue":"7","noUsgsAuthors":false,"publicationDate":"1970-11-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Fischer, R. P.","contributorId":89958,"corporation":false,"usgs":true,"family":"Fischer","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":826706,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70226167,"text":"70226167 - 1970 - Uraninite-bearing contact metamorphic deposits, Heaths Peak, Carbon County, Wyoming","interactions":[],"lastModifiedDate":"2021-11-15T20:16:13.843167","indexId":"70226167","displayToPublicDate":"1970-11-01T14:03:22","publicationYear":"1970","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":"Uraninite-bearing contact metamorphic deposits, Heaths Peak, Carbon County, Wyoming","docAbstract":"<div class=\"article-section-wrapper js-article-section js-content-section  \"><p>Deposits that contain uraninite and sulfide minerals at Heaths Peak, Carbon County, Wyo., display a zoned distribution of metals from the edge of granite into adjacent metamorphic rocks. The metallic minerals -- uraninite, molybdenite, pyrite, chalcopyrite, galena, pyrrhotite, and marcasite -- are concentrated on the undersides of metamorphosed roof pendants. At the Little Man mine, deposition was related to a small cupola projecting into the central part of an elongate pendant. The host rocks and the deposits are of Precambrian age.</p></div>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.65.7.849","usgsCitation":"Harshman, E., and Bell, K., 1970, Uraninite-bearing contact metamorphic deposits, Heaths Peak, Carbon County, Wyoming: Economic Geology, v. 65, no. 7, p. 849-855, https://doi.org/10.2113/gsecongeo.65.7.849.","productDescription":"7 p.","startPage":"849","endPage":"855","costCenters":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"links":[{"id":391689,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","county":"Carbon County","otherGeospatial":"Heaths Peak","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -106.86641693115234,\n              42.290770590710586\n            ],\n            [\n              -106.82693481445312,\n              42.290770590710586\n            ],\n            [\n              -106.82693481445312,\n              42.31717787038102\n            ],\n            [\n              -106.86641693115234,\n              42.31717787038102\n            ],\n            [\n              -106.86641693115234,\n              42.290770590710586\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"65","issue":"7","noUsgsAuthors":false,"publicationDate":"1970-11-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Harshman, E.N.","contributorId":84827,"corporation":false,"usgs":true,"family":"Harshman","given":"E.N.","email":"","affiliations":[],"preferred":false,"id":826704,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bell, Kenneth G.","contributorId":42490,"corporation":false,"usgs":true,"family":"Bell","given":"Kenneth G.","affiliations":[],"preferred":false,"id":826705,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70226574,"text":"70226574 - 1970 - Fission-track and K-Ar ages of Tertiary ash-flow tuffs, north-central Nevada","interactions":[],"lastModifiedDate":"2021-11-29T19:30:00.160367","indexId":"70226574","displayToPublicDate":"1970-11-01T13:19:16","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Fission-track and K-Ar ages of Tertiary ash-flow tuffs, north-central Nevada","docAbstract":"<p>Ages obtained from three Tertiary ash-flow tuffs in central Nevada by fission-track and K-Ar dating are concordant. Samples dated by these methods from the same localities give the same age within the limits of analytical uncertainty. Samples of three units from widely separated localities were dated further to confirm the concordance of the dating methods and to establish that ages can be used, in conjunction with normal geologic techniques, as a criteria for correlation. The minerals dated by K-Ar were biotite and sanidine; and sphene zircon and apatite were used to determine the fission track ages.</p><p>The Bates Mountain Tuff was dated at 24.0 m.y. (F.T.) and 24.0 m.y. (K-Ar). The Fish Creek Mountains Tuff has a fission-track age of 24.4 m.y., and a K-Ar age of 23.9 m.y. The average fission-track age for the Caetano Tuff is 34.9 m.y., and it has an average K-Ar age of 32.3 m.y.</p><p>The amount of analytical uncertainty is slightly greater in the fission track method. Sampling, preparation, and determination of the age by the fission-track method is competitive with the K-Ar method.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3375:FAKAOT]2.0.CO;2","usgsCitation":"Naeser, C.W., and McKee, E.H., 1970, Fission-track and K-Ar ages of Tertiary ash-flow tuffs, north-central Nevada: Bulletin of the Geological Society of America, v. 81, no. 11, p. 3375-3383, https://doi.org/10.1130/0016-7606(1970)81[3375:FAKAOT]2.0.CO;2.","productDescription":"9 p.","startPage":"3375","endPage":"3383","costCenters":[],"links":[{"id":392186,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","county":"Lander County","otherGeospatial":"Bates Mountain, Fish Creek Mountains, Mount 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,{"id":70226545,"text":"70226545 - 1970 - A Permian disturbance of K-Ar radiometric ages in New England: Its occurrence and cause","interactions":[],"lastModifiedDate":"2021-11-23T16:59:08.102073","indexId":"70226545","displayToPublicDate":"1970-11-01T10:38:03","publicationYear":"1970","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"A Permian disturbance of K-Ar radiometric ages in New England: Its occurrence and cause","docAbstract":"<div class=\"article-section-wrapper js-article-section js-content-section  \"><p>Approximately 200 K-Ar mineral and whole rock ages from New England, half of which are previously unpublished, are used to delineate an area of Permian thermal disturbance. The disturbed area, as outlined by K-Ar mica ages, forms a north-northeast-trending belt 60–80 mi wide that extends from the coast of Long Island Sound in southern Connecticut to southwestern Maine, where it terminates against rocks displaying older radiometric ages. Several possible mechanisms that may have affected the radio-metric systems of pre-existing rocks are examined: (1) contact metamorphism related to contemporaneous igneous activity, (2) alteration associated with major faulting, (3) regional metamorphism in late Paleozoic time, and (4) burial followed by uplift and erosion. Evidence is given that each of these mechanisms was operative locally, especially in the southern portion of the belt. The general lack of late Paleozoic tectonism in New Hampshire and Maine suggests that only burial is a likely cause of the disturbance there.</p></div>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1970)81[3359:APDOKR]2.0.CO;2","usgsCitation":"Zartman, R.E., Hurley, P.M., Krueger, H.W., and Giletti, B.J., 1970, A Permian disturbance of K-Ar radiometric ages in New England: Its occurrence and cause: Bulletin of the Geological Society of America, v. 81, no. 11, p. 3359-3373, https://doi.org/10.1130/0016-7606(1970)81[3359:APDOKR]2.0.CO;2.","productDescription":"15 p.","startPage":"3359","endPage":"3373","costCenters":[],"links":[{"id":392052,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island","county":"Barnstable County, Bristol County, Coos County, Cumberland County, Essex County, Franklin County, Grafton County, Hampden County, Hartford County, Jackman County, Kennebec County, Knox County, Lincoln County, Litchfield County, Middlesex County, New Haven County, Oxford County, Plymouth County, Providence County, Rockingham County, Somerset County, Strafford County, Sullivan County, Waldo County, Worcester County, York County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -71.56494140625,\n              45.042478050891546\n            ],\n            [\n              -73.32275390625,\n              45.0502402697946\n            ],\n            [\n              -73.575439453125,\n              41.02964338716638\n            ],\n            [\n              -72.93823242187499,\n              41.22824901518529\n            ],\n            [\n              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