{"pageNumber":"6488","pageRowStart":"162175","pageSize":"25","recordCount":184904,"records":[{"id":70011564,"text":"70011564 - 1969 - Atomic-absorption determination of rhodium in chromite concentrates","interactions":[],"lastModifiedDate":"2020-11-30T13:25:11.930588","indexId":"70011564","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3517,"text":"Talanta","active":true,"publicationSubtype":{"id":10}},"title":"Atomic-absorption determination of rhodium in chromite concentrates","docAbstract":"<div id=\"aep-abstract-id4\" class=\"abstract author\"><div id=\"aep-abstract-sec-id5\"><p>Rhodium is determined in chromite concentrates by atomic absorption after concentration either by co-precipitation with tellurium formed by the reduction of tellurite with tin(II) chloride or by fire assay into a gold bead. Interelement interferences in the atomic-absorption determination are removed by buffering the solutions with lanthanum sulphate (lanthanum concentration 1%). Substantial amounts of Ag, Al, Au, Bi, Ca, Cd, Co, Cr, Cu, Fe, Ho, Hg, K, La, Mg, Mn, Mo, Na, Ni, Pb, Te, Ti, V, Y, Zn and platinum metals can be tolerated. A lower limit of approximately 0.07 ppm Rh can be determined in a 3-g sample.</p></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/0039-9140(69)80197-9","issn":"00399140","usgsCitation":"Schnepfe, M., and Grimaldi, F.S., 1969, Atomic-absorption determination of rhodium in chromite concentrates: Talanta, v. 16, no. 11, p. 1461-1465, https://doi.org/10.1016/0039-9140(69)80197-9.","productDescription":"5 p.","startPage":"1461","endPage":"1465","numberOfPages":"5","costCenters":[],"links":[{"id":221184,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059eec9e4b0c8380cd49f72","contributors":{"authors":[{"text":"Schnepfe, M. M.","contributorId":93622,"corporation":false,"usgs":true,"family":"Schnepfe","given":"M. M.","affiliations":[],"preferred":false,"id":361413,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grimaldi, F. S.","contributorId":94286,"corporation":false,"usgs":true,"family":"Grimaldi","given":"F.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":361414,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011675,"text":"70011675 - 1969 - The isotopic composition of lead in potassium feldspars from some 1.0-b.y. old North American igneous rocks","interactions":[],"lastModifiedDate":"2020-11-29T17:47:10.573211","indexId":"70011675","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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":"The isotopic composition of lead in potassium feldspars from some 1.0-b.y. old North American igneous rocks","docAbstract":"<p>The isotopic composition of lead and the uranium, thorium and lead concentrations in potassium feldspars are determined for more than 30 1.0-b.y. old North American igneous rocks. Samples representing a broad spectrum in petrographic type and mode of occurrence were chosen; an effort was made to include only rocks having well-documented ages from 950 to 1140 m.y. and showing minimal evidence of subsequent metamorphism.</p><p>Most samples, including those from extensive terranes of contemporaneous age, have limited lead isotope variations (<span class=\"math\"><span id=\"MathJax-Element-1-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>Pb</mtext><msup><mi></mi><mn>206</mn></msup><mtext>Pb</mtext><msup><mi></mi><mn>204</mn></msup><mtext>= 16.74&amp;#x2013;17.38</mtext></math>\"><span class=\"MJX_Assistive_MathML\">Pb206Pb204= 16.74–17.38</span></span></span>;<span>&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-2-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>Pb</mtext><msup><mi></mi><mn>207</mn></msup><mtext>Pb</mtext><msup><mi></mi><mn>204</mn></msup><mtext>= 15.39&amp;#x2013;15.59</mtext></math>\"><span class=\"MJX_Assistive_MathML\">Pb207Pb204= 15.39–15.59</span></span></span>;<span>&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-3-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>Pb</mtext><msup><mi></mi><mn>208</mn></msup><mtext>Pb</mtext><msup><mi></mi><mn>204</mn></msup><mtext>= 36.38&amp;#x2013;37.10</mtext></math>\"><span class=\"MJX_Assistive_MathML\">Pb208Pb204= 36.38–37.10</span></span></span>), which yield model ages close to the radiometric ages. Granite, pegmatite, and rhyolite from within the Grenville province of Canada and age-equivalent rocks of New York, Virginia, Texas, and Colorado and granophyric units associated with the Duluth Gabbro Complex of Minnesota are among the materials yielding this main isotopic spectrum.</p><p>Several samples were encountered which had isotopic compositions very different from the above group. Lead showing a marked deficiency in radiogenic isotopes was found in two granitic bodies associated with older Labrador Trough rocks from Quebec, in a rapakivi granite from southern Nevada, and in a small granite stock from Mellen, Wisconsin. These occurrences all involve small intrusions of granite which lie near considerably older areas of basement rock. Model ages calculated from the<span>&nbsp;</span><span class=\"math\"><span id=\"MathJax-Element-4-Frame\" class=\"MathJax_SVG\" data-mathml=\"<math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;><mtext>Pb</mtext><msup><mi></mi><mn>206</mn></msup><mtext>Pb</mtext><msup><mi></mi><mn>204</mn></msup></math>\"><span class=\"MJX_Assistive_MathML\">Pb206Pb204</span></span></span><span>&nbsp;</span>ratio are older than the age of the intrusions and approach the age of the host basement rock.</p><p>Several possible interpretations are offered to explain the isotopic behavior encountered in this study. In particular, a “vertically differentiated crust” model is proposed which will account for both the main spectrum and the anomalous lead. The significance of lead isotopic studies in understanding crustal structure in continental regions is discussed.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(69)90104-5","issn":"00167037","usgsCitation":"Zartman, R., and Wasserburg, G., 1969, The isotopic composition of lead in potassium feldspars from some 1.0-b.y. old North American igneous rocks: Geochimica et Cosmochimica Acta, v. 33, no. 8, p. 901-942, https://doi.org/10.1016/0016-7037(69)90104-5.","productDescription":"42 p.","startPage":"901","endPage":"942","numberOfPages":"42","costCenters":[],"links":[{"id":220784,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bad6ce4b08c986b323bd3","contributors":{"authors":[{"text":"Zartman, R. E.","contributorId":15632,"corporation":false,"usgs":true,"family":"Zartman","given":"R. E.","affiliations":[],"preferred":false,"id":361683,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wasserburg, G.J.","contributorId":54734,"corporation":false,"usgs":true,"family":"Wasserburg","given":"G.J.","email":"","affiliations":[],"preferred":false,"id":361684,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011563,"text":"70011563 - 1969 - Uranium, thorium, and lead systematics in Granite Mountains, Wyoming","interactions":[],"lastModifiedDate":"2020-11-29T18:03:54.526484","indexId":"70011563","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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}},"title":"Uranium, thorium, and lead systematics in Granite Mountains, Wyoming","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif\"><div id=\"ab1\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id4\"><p>Uranium, thorium and lead concentrations and isotopic compositions were determined on total rocks and a feldspar sample from widely separated parts of the Granite Mountains in central Wyoming. Linear relations defined by<sup>206</sup>Pb/<sup>204</sup>Pb −<sup>207</sup>Pb/<sup>204</sup>Pb and<sup>208</sup>Pb/<sup>204</sup>Pb −<sup>232</sup>Th/<sup>204</sup>Pb for the total rock samples define 2.8 billion-year isochrons. In contrast,<sup>238</sup>U/<sup>206</sup>Pb ages are anomalously old by a factor of at least four. The low<sup>238</sup>U/<sup>204</sup>Pb values, coupled with the radiogenic<sup>206</sup>Pb/<sup>204</sup>Pb and radiogenic<sup>207</sup>Pb/<sup>204</sup>Pb ratios, indicate that contents of uranium in near-surface rocks would have had to have been considerably greater than those presently observed to have generated the radiogenic lead. It is possible that more than 10<sup>11</sup><span>&nbsp;</span>kg of uranium has been removed from the Granite Mountains, and the most feasible interpretation is that most of this uranium was leached from near-surface rocks at some time during the Cenozoic, thus providing a major source for the uranium deposits in the central Wyoming basins.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(69)90028-4","issn":"0012821X","usgsCitation":"Rosholt, J., and Bartel, A., 1969, Uranium, thorium, and lead systematics in Granite Mountains, Wyoming: Earth and Planetary Science Letters, v. 7, no. 2, p. 141-147, https://doi.org/10.1016/0012-821X(69)90028-4.","productDescription":"7 p.","startPage":"141","endPage":"147","numberOfPages":"7","costCenters":[],"links":[{"id":221183,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-110.048476,40.997555],[-110.121639,40.997101],[-110.125709,40.99655],[-110.237848,40.995427],[-110.250709,40.996089],[-110.375714,40.994947],[-110.500718,40.994746],[-110.539819,40.996346],[-110.715026,40.996347],[-110.750727,40.996847],[-111.046723,40.997959],[-111.046551,41.251716],[-111.0466,41.360692],[-111.046264,41.377731],[-111.045789,41.565571],[-111.045818,41.579845],[-111.046689,42.001567],[-111.047109,42.142497],[-111.047107,42.148971],[-111.047058,42.182672],[-111.047097,42.194773],[-111.047074,42.280787],[-111.04708,42.34942],[-111.046801,42.504946],[-111.046719,42.513118],[-111.046017,42.582723],[-111.043564,42.722624],[-111.044135,42.874924],[-111.043959,42.96445],[-111.043957,42.969482],[-111.043924,42.975063],[-111.044129,43.018702],[-111.044156,43.020052],[-111.044206,43.022614],[-111.044034,43.024581],[-111.044034,43.024844],[-111.044033,43.026411],[-111.044094,43.02927],[-111.043997,43.041415],[-111.044058,43.04464],[-111.044063,43.046302],[-111.044086,43.054819],[-111.044117,43.060309],[-111.04415,43.066172],[-111.044162,43.068222],[-111.044143,43.072364],[-111.044235,43.177121],[-111.044266,43.177236],[-111.044232,43.18444],[-111.044168,43.189244],[-111.044229,43.195579],[-111.044617,43.31572],[-111.045205,43.501136],[-111.045706,43.659112],[-111.04588,43.681033],[-111.046118,43.684902],[-111.046051,43.685812],[-111.04611,43.687848],[-111.046421,43.722059],[-111.046435,43.726545],[-111.04634,43.726957],[-111.046715,43.815832],[-111.046515,43.908376],[-111.046917,43.974978],[-111.047064,43.983467],[-111.047349,43.999921],[-111.049077,44.020072],[-111.048751,44.060403],[-111.048751,44.060838],[-111.048633,44.062903],[-111.048452,44.114831],[-111.049119,44.124923],[-111.049695,44.353626],[-111.049148,44.374925],[-111.049216,44.435811],[-111.049194,44.438058],[-111.048974,44.474072],[-111.055208,44.624927],[-111.055333,44.666263],[-111.055511,44.725343],[-111.056416,44.749928],[-111.056888,44.866658],[-111.055629,44.933578],[-111.056207,44.935901],[-111.055199,45.001321],[-111.044275,45.001345],[-110.785008,45.002952],[-110.761554,44.999934],[-110.750767,44.997948],[-110.705272,44.992324],[-110.552433,44.992237],[-110.547165,44.992459],[-110.48807,44.992361],[-110.402927,44.99381],[-110.362698,45.000593],[-110.342131,44.999053],[-110.324441,44.999156],[-110.28677,44.99685],[-110.199503,44.996188],[-110.110103,45.003905],[-110.026347,45.003665],[-110.025544,45.003602],[-109.99505,45.003174],[-109.875735,45.003275],[-109.798687,45.002188],[-109.75073,45.001605],[-109.663673,45.002536],[-109.574321,45.002631],[-109.386432,45.004887],[-109.375713,45.00461],[-109.269294,45.005283],[-109.263431,45.005345],[-109.103445,45.005904],[-109.08301,44.99961],[-109.062262,44.999623],[-108.621313,45.000408],[-108.578484,45.000484],[-108.565921,45.000578],[-108.500679,44.999691],[-108.271201,45.000251],[-108.249345,44.999458],[-108.238139,45.000206],[-108.218479,45.000541],[-108.14939,45.001062],[-108.000663,45.001223],[-107.997353,45.001565],[-107.911743,45.001292],[-107.750654,45.000778],[-107.608854,45.00086],[-107.607824,45.000929],[-107.49205,45.00148],[-107.351441,45.001407],[-107.13418,45.000109],[-107.125633,44.999388],[-107.105685,44.998734],[-107.084939,44.996599],[-107.074996,44.997004],[-107.050801,44.996424],[-106.892875,44.995947],[-106.888773,44.995885],[-106.263586,44.993788],[-106.024814,44.993688],[-105.928184,44.993647],[-105.914258,44.999986],[-105.913382,45.000941],[-105.848065,45.000396],[-105.076607,45.000347],[-105.038405,45.000345],[-105.025266,45.00029],[-105.019284,45.000329],[-105.01824,45.000437],[-104.765063,44.999183],[-104.759855,44.999066],[-104.72637,44.999518],[-104.665171,44.998618],[-104.663882,44.998869],[-104.470422,44.998453],[-104.470117,44.998453],[-104.250145,44.99822],[-104.057698,44.997431],[-104.055914,44.874986],[-104.056496,44.867034],[-104.055963,44.768236],[-104.055963,44.767962],[-104.055934,44.72372],[-104.05587,44.723422],[-104.055777,44.700466],[-104.055938,44.693881],[-104.05581,44.691343],[-104.055877,44.571016],[-104.055892,44.543341],[-104.055927,44.51773],[-104.055389,44.249983],[-104.054487,44.180381],[-104.054562,44.141081],[-104.05495,43.93809],[-104.055077,43.936535],[-104.055488,43.853477],[-104.055488,43.853476],[-104.055138,43.750421],[-104.055133,43.747105],[-104.054902,43.583852],[-104.054885,43.583512],[-104.05484,43.579368],[-104.055032,43.558603],[-104.054787,43.503328],[-104.054786,43.503072],[-104.054779,43.477815],[-104.054766,43.428914],[-104.054614,43.390949],[-104.054403,43.325914],[-104.054218,43.30437],[-104.053884,43.297047],[-104.053876,43.289801],[-104.053127,43.000585],[-104.052863,42.754569],[-104.052809,42.749966],[-104.052583,42.650062],[-104.052741,42.633982],[-104.052586,42.630917],[-104.052773,42.611766],[-104.052775,42.61159],[-104.052775,42.610813],[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 \"}}]}","volume":"7","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbddbe4b08c986b329287","contributors":{"authors":[{"text":"Rosholt, J.N.","contributorId":37749,"corporation":false,"usgs":true,"family":"Rosholt","given":"J.N.","email":"","affiliations":[],"preferred":false,"id":361412,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bartel, A.J.","contributorId":34508,"corporation":false,"usgs":true,"family":"Bartel","given":"A.J.","email":"","affiliations":[],"preferred":false,"id":361411,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011611,"text":"70011611 - 1969 - Heat flow measurements on the southeast coast of Australia","interactions":[],"lastModifiedDate":"2020-11-29T17:55:48.524254","indexId":"70011611","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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}},"title":"Heat flow measurements on the southeast coast of Australia","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif\"><div id=\"ab1\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id7\"><p>Three boreholes have been drilled for the Australian National University near the southeast coast of New South Wales, Australia. The heat flows found are 1.1, 1.0, and 1.3 μcal/cm<sup>2</sup>sec. The errors resulting from the proximity of the sea and a lake, surface temperature change, conductivity structure and water flow have been examined. The radioactive heat production in some of the intrusive rocks of the area have also been measured. The heat flows are much lower than the values of about 2.0 found elsewhere in south eastern Australia. The lower values appear to be part of a distinct heat flow province in eastern Australia.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(69)90004-1","issn":"0012821X","usgsCitation":"Hyndman, R., Jaeger, J., and Sass, J., 1969, Heat flow measurements on the southeast coast of Australia: Earth and Planetary Science Letters, v. 7, no. 1, p. 12-16, https://doi.org/10.1016/0012-821X(69)90004-1.","productDescription":"5 p.","startPage":"12","endPage":"16","numberOfPages":"5","costCenters":[],"links":[{"id":220850,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Australia","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              148.86474609375,\n              -38.496593518947556\n            ],\n            [\n              151.01806640625,\n              -38.496593518947556\n            ],\n            [\n              151.01806640625,\n              -34.27083595164999\n            ],\n            [\n              148.86474609375,\n              -34.27083595164999\n            ],\n            [\n              148.86474609375,\n              -38.496593518947556\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"7","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3003e4b0c8380cd5d2cc","contributors":{"authors":[{"text":"Hyndman, R.D.","contributorId":45831,"corporation":false,"usgs":true,"family":"Hyndman","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":361538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jaeger, J.C.","contributorId":54217,"corporation":false,"usgs":false,"family":"Jaeger","given":"J.C.","email":"","affiliations":[{"id":16691,"text":"Research School of Earth Sciences, Australian National University","active":true,"usgs":false}],"preferred":false,"id":361539,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sass, J.H.","contributorId":70749,"corporation":false,"usgs":true,"family":"Sass","given":"J.H.","email":"","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":361540,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70011612,"text":"70011612 - 1969 - Surface area of vermiculite with nitrogen and carbon dioxide as adsorbates","interactions":[],"lastModifiedDate":"2018-01-25T14:36:50","indexId":"70011612","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1245,"text":"Clays and Clay Minerals","onlineIssn":"1552-8367","printIssn":"0009-8604","active":true,"publicationSubtype":{"id":10}},"title":"Surface area of vermiculite with nitrogen and carbon dioxide as adsorbates","docAbstract":"<p>Surface-area studies were made on several homoionic vermiculites with both nitrogen and carbon dioxide as adsorbates. These studies show that only very slight penetration occurs between individual vermiculite platelets. This is in contrast to an earlier investigation of montmorillonite where it was found that the degree of penetration between layers is quite high, particularly for carbon dioxide, and is governed by the size and charge of the interlayer cation. The inability of these adsorbates to penetrate substantially between vermiculite platelets is due primarily to this mineral's high surface-charge density.</p><p>The extent of penetration of nitrogen and carbon dioxide at the edges of vermiculite platelets, though slight, is influenced by the coordinated water retained within the sample at a given degassing temperature. Forces between layers are weakened with increasing water content, which permits slightly greater penetration by adsorbate gases. Thus, the surface area of vermiculite, as determined by gas adsorption, is larger than the calculated external surface area based upon particle size and shape considerations. In addition, \"extra\" surface is provided by the lifting and scrolling of terminal platelets. These morphological features are shown in scanning electron micrographs of a naturally occuring vermiculite.</p>","language":"English","publisher":"The Clay Minerals Society","doi":"10.1346/CCMN.1969.0170403","usgsCitation":"Thomas, J., and Bohor, B., 1969, Surface area of vermiculite with nitrogen and carbon dioxide as adsorbates: Clays and Clay Minerals, v. 17, no. 4, p. 205-209, https://doi.org/10.1346/CCMN.1969.0170403.","productDescription":"5 p.","startPage":"205","endPage":"209","costCenters":[],"links":[{"id":220851,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"4","noUsgsAuthors":false,"publicationDate":"2024-07-01","publicationStatus":"PW","scienceBaseUri":"505b9f95e4b08c986b31e6b0","contributors":{"authors":[{"text":"Thomas, Josephus Jr.","contributorId":11755,"corporation":false,"usgs":false,"family":"Thomas","given":"Josephus","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":361541,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bohor, Bruce F.","contributorId":104823,"corporation":false,"usgs":true,"family":"Bohor","given":"Bruce F.","affiliations":[],"preferred":false,"id":361542,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70010800,"text":"70010800 - 1969 - Pyrolysis of humic and fulvic acids","interactions":[],"lastModifiedDate":"2020-11-29T18:38:01.655442","indexId":"70010800","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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":"Pyrolysis of humic and fulvic acids","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif\"><div id=\"aep-abstract-id6\" class=\"abstract author\"><div id=\"aep-abstract-sec-id7\"><p>Pyrolysis of humic and fulvic acids isolated from a North Carolina soil yields a variety of aromatic, heterocyclic and straight chain organ compounds. The pyrolysis products identified by gas chromatography and mass spectrometry indicate that humic and fulvic acids have aromatic and polysaccharide structures in their molecules.</p></div></div></div><ul id=\"issue-navigation\" class=\"issue-navigation u-margin-s-bottom u-bg-grey1\"></ul>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(69)90124-0","issn":"00167037","usgsCitation":"Wershaw, R., and Bohner, G., 1969, Pyrolysis of humic and fulvic acids: Geochimica et Cosmochimica Acta, v. 33, no. 6, p. 757-762, https://doi.org/10.1016/0016-7037(69)90124-0.","productDescription":"6 p.","startPage":"757","endPage":"762","numberOfPages":"6","costCenters":[],"links":[{"id":218804,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9060e4b0c8380cd7fcd3","contributors":{"authors":[{"text":"Wershaw, R.L.","contributorId":62223,"corporation":false,"usgs":true,"family":"Wershaw","given":"R.L.","affiliations":[],"preferred":false,"id":359677,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bohner, G.E. Jr.","contributorId":22486,"corporation":false,"usgs":true,"family":"Bohner","given":"G.E.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":359676,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70010799,"text":"70010799 - 1969 - The relationship of the rare-earth composition of minerals to geological environment","interactions":[],"lastModifiedDate":"2020-11-29T18:40:05.657968","indexId":"70010799","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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":"The relationship of the rare-earth composition of minerals to geological environment","docAbstract":"<p>It has been known for a long time that the composition of the lanthanides in minerals is controlled to a large degree by crystallo-chemical factors, but is also greatly influenced by changes in geological environment. In general, igneous rocks rich in silica are favourable for the concentration of the heavy lanthanides and yttrium; those low in silica and high in carbonate are favourable for the concentration of the light lanthanides.</p><p>These generalizations are illustrated by summaries of the available data on monazite, sphene, and apatite from different geological environments. Apatite of marine sedimentary origin (a large potential source of rare earths) shows marked depletion of cerium, as has been noted previously for sea water.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(69)90118-5","issn":"00167037","usgsCitation":"Fleischer, M., and Altschuler, Z., 1969, The relationship of the rare-earth composition of minerals to geological environment: Geochimica et Cosmochimica Acta, v. 33, no. 6, p. 725-732, https://doi.org/10.1016/0016-7037(69)90118-5.","productDescription":"8 p.","startPage":"725","endPage":"732","numberOfPages":"8","costCenters":[],"links":[{"id":218803,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf27e4b08c986b3245ae","contributors":{"authors":[{"text":"Fleischer, M.","contributorId":84069,"corporation":false,"usgs":true,"family":"Fleischer","given":"M.","email":"","affiliations":[],"preferred":false,"id":359675,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Altschuler, Z. S.","contributorId":42962,"corporation":false,"usgs":true,"family":"Altschuler","given":"Z. S.","affiliations":[],"preferred":false,"id":359674,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":53955,"text":"ofr69162 - 1969 - Preliminary determinations of hydrobiological and chemical conditions in the vicinity of the proposed jetport and other airports in south Florida: Progress report","interactions":[],"lastModifiedDate":"2022-06-06T19:22:00.448268","indexId":"ofr69162","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"69-162","title":"Preliminary determinations of hydrobiological and chemical conditions in the vicinity of the proposed jetport and other airports in south Florida: Progress report","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr69162","collaboration":"Prepared in cooperation with the Dade County Port Authority and the U.S. National Park Service","usgsCitation":"McPherson, B.F., 1969, Preliminary determinations of hydrobiological and chemical conditions in the vicinity of the proposed jetport and other airports in south Florida: Progress report: U.S. Geological Survey Open-File Report 69-162, 42 p., https://doi.org/10.3133/ofr69162.","productDescription":"42 p.","costCenters":[],"links":[{"id":401798,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0162/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":173858,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0162/report-thumb.jpg"},{"id":400238,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_52143.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Florida","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -80.52978515625,\n              24.986058021167594\n            ],\n            [\n              -80.09033203125,\n              25.93828707492375\n            ],\n            [\n              -80.00244140625,\n              27.00040800352175\n            ],\n            [\n              -80.61767578124999,\n              28.38173504322308\n            ],\n            [\n              -82.880859375,\n              28.130127737874005\n            ],\n            [\n              -82.3974609375,\n              26.843677401113002\n            ],\n            [\n              -81.67236328125,\n              25.760319754713887\n            ],\n            [\n              -81.123046875,\n              25.025884063244828\n            ],\n            [\n              -80.52978515625,\n              24.906367237907997\n            ],\n            [\n              -80.52978515625,\n              24.986058021167594\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b05e4b07f02db699e03","contributors":{"authors":[{"text":"McPherson, Benjamin F.","contributorId":17965,"corporation":false,"usgs":true,"family":"McPherson","given":"Benjamin","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":248777,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70010497,"text":"70010497 - 1969 - Methane-derived marine carbonates of pleistocene age","interactions":[],"lastModifiedDate":"2020-11-29T19:34:34.151245","indexId":"70010497","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Methane-derived marine carbonates of pleistocene age","docAbstract":"<div class=\"panel-pane pane-highwire-panel-tabs-container article__body\"><div class=\"pane-content\"><div id=\"panels-ajax-tab-container-highwire_article_tabs\" class=\"panels-ajax-tab-container\" data-panels-ajax-tab-preloaded=\"jnl_sci_tab_art\"><div class=\"panels-ajax-tab-wrap-jnl_sci_tab_art\"><div class=\"panel-display panel-1col clearfix\"><div class=\"panel-panel panel-col\"><div><div class=\"panel-pane pane-highwire-markup\"><div class=\"pane-content\"><div class=\"highwire-markup\"><div id=\"content-block-markup\" data-highwire-cite-ref-tooltip-instance=\"highwire_reflinks_tooltip\" data-highwire-glossary-tooltip-instance=\"highwire_reflinks_tooltip\"><div class=\"article abstract-view \"><div id=\"abstract-1\" class=\"section abstract\"><p id=\"p-1\">In some calcium carbonate-bearing sandstones from the edge of the continental shelf off the northeast United States, the δC<sup>13</sup><span>&nbsp;</span>range is from -30 and -60 per mil for both aragonite and high-magnesium calcite. The δC<sup>13</sup><span>&nbsp;</span>of co-existing shells of<span>&nbsp;</span><i>Modiolus</i><span>&nbsp;</span>sp. is normal (+ 1.7 to -2.7 per mil). The δO<sup>18</sup><span>&nbsp;</span>values of around + 3.5 per mil in all samples suggest deposition at temperatures around 0°C. Quaternary methane oxidized either chemically or microbiologically to carbon dioxide is the probable source of carbon in these carbonates.</p></div></div><span id=\"related-urls\"></span></div></div></div></div></div></div></div></div></div></div></div>","language":"English","publisher":"AAAS","doi":"10.1126/science.165.3894.690","issn":"00368075","usgsCitation":"Hathaway, J., and Degens, E., 1969, Methane-derived marine carbonates of pleistocene age: Science, v. 165, no. 3894, p. 690-692, https://doi.org/10.1126/science.165.3894.690.","productDescription":"3 p.","startPage":"690","endPage":"692","numberOfPages":"3","costCenters":[],"links":[{"id":219380,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"165","issue":"3894","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a553ee4b0c8380cd6d178","contributors":{"authors":[{"text":"Hathaway, J.C.","contributorId":94280,"corporation":false,"usgs":true,"family":"Hathaway","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":359064,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Degens, E.T.","contributorId":76321,"corporation":false,"usgs":true,"family":"Degens","given":"E.T.","email":"","affiliations":[],"preferred":false,"id":359063,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70010496,"text":"70010496 - 1969 - Interaction of pesticides with natural organic material","interactions":[],"lastModifiedDate":"2023-10-20T15:34:39.55638","indexId":"70010496","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Interaction of pesticides with natural organic material","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"American Chemical Society","doi":"10.1021/es60026a010","issn":"0013936X","usgsCitation":"Wershaw, R., Burcar, P., and Goldberg, M.C., 1969, Interaction of pesticides with natural organic material: Environmental Science & Technology, v. 3, no. 3, p. 271-273, https://doi.org/10.1021/es60026a010.","productDescription":"3 p.","startPage":"271","endPage":"273","costCenters":[],"links":[{"id":219379,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"3","issue":"3","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"505a3cb5e4b0c8380cd62f82","contributors":{"authors":[{"text":"Wershaw, R.L.","contributorId":62223,"corporation":false,"usgs":true,"family":"Wershaw","given":"R.L.","affiliations":[],"preferred":false,"id":359060,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burcar, P.J.","contributorId":107424,"corporation":false,"usgs":true,"family":"Burcar","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":359062,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Goldberg, M. C.","contributorId":89220,"corporation":false,"usgs":true,"family":"Goldberg","given":"M.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":359061,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":14037,"text":"ofr69123 - 1969 - Geochemical maps of an area northwest of the Chulitna River, central Alaska Range","interactions":[],"lastModifiedDate":"2023-05-01T20:18:42.209167","indexId":"ofr69123","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"69-123","title":"Geochemical maps of an area northwest of the Chulitna River, central Alaska Range","docAbstract":"An area northwest of the Chulitna River in west-central Alaska Range locally shows local anomalous concentrations of gold, silver, arsenic, copper, zinc, and lead in stream-sediment samples. Most stream sediments showing anomalous concentrations of metals can be correlated with either known or newly discovered deposits or occurrences described in Circular 617.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr69123","usgsCitation":"Hawley, C.C., and Clark, A.L., 1969, Geochemical maps of an area northwest of the Chulitna River, central Alaska Range: U.S. Geological Survey Open-File Report 69-123, Report: 4 p.; 6 Plates: 12.92 x 19.07 inches or smaller, https://doi.org/10.3133/ofr69123.","productDescription":"Report: 4 p.; 6 Plates: 12.92 x 19.07 inches or smaller","costCenters":[],"links":[{"id":416579,"rank":9,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_8360.htm","linkFileType":{"id":5,"text":"html"}},{"id":42689,"rank":8,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0123/plate-6.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42688,"rank":7,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0123/plate-5.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42687,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0123/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42686,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0123/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42684,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0123/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":42690,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1969/0123/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":147062,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1969/0123/report-thumb.jpg"},{"id":42685,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1969/0123/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","otherGeospatial":"Chulitna River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -150,\n              63.329\n            ],\n            [\n              -150,\n              63\n            ],\n            [\n              -149.5,\n              63\n            ],\n            [\n              -149.5,\n              63.329\n            ],\n            [\n              -150,\n              63.329\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6ade4a","contributors":{"authors":[{"text":"Hawley, C. C.","contributorId":102070,"corporation":false,"usgs":true,"family":"Hawley","given":"C.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":168831,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Clark, Allen L.","contributorId":96258,"corporation":false,"usgs":true,"family":"Clark","given":"Allen","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":168830,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70010051,"text":"70010051 - 1969 - 40Ar/36Ar analyses of historic lava flows","interactions":[],"lastModifiedDate":"2020-11-29T19:58:36.546129","indexId":"70010051","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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}},"title":"40Ar/36Ar analyses of historic lava flows","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif\"><div id=\"ab1\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id4\"><p>The ratio<sup>40</sup>Ar/<sup>36</sup>Ar was measured for 26 subaerial historic lava flows. Approximately one-third of the samples had<sup>40</sup>Ar/<sup>36</sup>Ar ratios either higher or lower than the atmospheric value of 295.5 at the 95% confidence level. Excess radiogenic<sup>40</sup>Ar in five flows ranged from about 1 × 10<sup>−13</sup><span>&nbsp;</span>to 1.5 × 10<sup>−12</sup><span>&nbsp;</span>mol/g. Possible excess<sup>36</sup>Ar in three flows was on the order of 10<sup>−16</sup><span>&nbsp;</span>to 10<sup>−15</sup><span>&nbsp;</span>mol/g. Upper 95% confidence limits for excess<sup>40</sup>Ar in samples with normal<sup>40</sup>Ar/<sup>36</sup>Ar ratios are generally less than 3 × 10<sup>−13</sup><span>&nbsp;</span>mol/g. The origin of the excess<sup>36</sup>Ar is unknown but it may be due either to the incorporation of primitive argon that has been stored in the mantle in very low potassium environments or to enrichment in<sup>36</sup>Ar as atmospheric argon diffuses into the rocks after they cool.</p></div></div></div><ul id=\"issue-navigation\" class=\"issue-navigation u-margin-s-bottom u-bg-grey1\"></ul>","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(69)90160-5","issn":"0012821X","usgsCitation":"Dalrymple, G.B., 1969, 40Ar/36Ar analyses of historic lava flows: Earth and Planetary Science Letters, v. 6, no. 1, p. 47-55, https://doi.org/10.1016/0012-821X(69)90160-5.","productDescription":"9 p.","startPage":"47","endPage":"55","numberOfPages":"9","costCenters":[],"links":[{"id":218774,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e25fe4b0c8380cd45b16","contributors":{"authors":[{"text":"Dalrymple, G. B.","contributorId":10407,"corporation":false,"usgs":true,"family":"Dalrymple","given":"G.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":357777,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70010030,"text":"70010030 - 1969 - Thermochemical study of the system Fe-As-S","interactions":[],"lastModifiedDate":"2020-11-29T20:02:28.602934","indexId":"70010030","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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":"Thermochemical study of the system Fe-As-S","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif\"><div id=\"aep-abstract-id3\" class=\"abstract author\"><div id=\"aep-abstract-sec-id4\"><p>The results of<span>&nbsp;</span><span class=\"small-caps\">Toulmin</span><span>&nbsp;</span>and<span>&nbsp;</span><span class=\"small-caps\">Barton</span><span>&nbsp;</span>(1964) for the Fe-S system have been combined with a series of new measurements on As-bearing assemblages in the 500°–850°C temperature range to derive data on the free energies, enthalpies, and entropies of formation for arsenopyrite, loellingite, orpiment, realgar, FeAs, and Fe<sub>2</sub>As. The enthalpies and free energies of formation of orpiment and realgar are only approximately one-half as large as indicated in recent compilations of thermochemical data (<span class=\"small-caps\">Wagman</span><i>et al</i>., 1965). Data are also presented for the covariation of activity of S<sub>2</sub>(g) with temperature and composition of the sulfur-arsenic liquid.</p></div></div></div><ul id=\"issue-navigation\" class=\"issue-navigation u-margin-s-bottom u-bg-grey1\"></ul>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(69)90031-3","issn":"00167037","usgsCitation":"Barton, P.B., 1969, Thermochemical study of the system Fe-As-S: Geochimica et Cosmochimica Acta, v. 33, no. 7, p. 841-857, https://doi.org/10.1016/0016-7037(69)90031-3.","productDescription":"17 p.","startPage":"841","endPage":"857","numberOfPages":"17","costCenters":[],"links":[{"id":219502,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb269e4b08c986b3257af","contributors":{"authors":[{"text":"Barton, P. B. Jr.","contributorId":23683,"corporation":false,"usgs":true,"family":"Barton","given":"P.","suffix":"Jr.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":357731,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70010054,"text":"70010054 - 1969 - Etching fission tracks in zircons","interactions":[],"lastModifiedDate":"2020-11-29T19:55:59.101933","indexId":"70010054","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Etching fission tracks in zircons","docAbstract":"<div class=\"panel-pane pane-highwire-panel-tabs-container article__body\"><div class=\"pane-content\"><div id=\"panels-ajax-tab-container-highwire_article_tabs\" class=\"panels-ajax-tab-container\" data-panels-ajax-tab-preloaded=\"jnl_sci_tab_art\"><div class=\"panels-ajax-tab-wrap-jnl_sci_tab_art\"><div class=\"panel-display panel-1col clearfix\"><div class=\"panel-panel panel-col\"><div><div class=\"panel-pane pane-highwire-markup\"><div class=\"pane-content\"><div class=\"highwire-markup\"><div id=\"content-block-markup\" data-highwire-cite-ref-tooltip-instance=\"highwire_reflinks_tooltip\" data-highwire-glossary-tooltip-instance=\"highwire_reflinks_tooltip\"><div class=\"article abstract-view \"><div id=\"abstract-1\" class=\"section abstract\"><p id=\"p-1\">A new technique has been developed whereby fission tracks can be etched in zircon with a solution of sodiuim hydroxide at 220°C. Etching time varied between 15 minutes and 5 houtrs. Colored zircon required less etching time than the colorless varieties.</p></div></div><span id=\"related-urls\"></span></div></div></div></div></div></div></div></div></div></div></div>","language":"English","publisher":"AAAS","doi":"10.1126/science.165.3891.388","issn":"00368075","usgsCitation":"Naeser, C.W., 1969, Etching fission tracks in zircons: Science, v. 165, no. 3891, p. 388-388, https://doi.org/10.1126/science.165.3891.388.","productDescription":"1 p.","startPage":"388","endPage":"388","costCenters":[],"links":[{"id":218839,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"165","issue":"3891","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0bc6e4b0c8380cd52885","contributors":{"authors":[{"text":"Naeser, C. W.","contributorId":17582,"corporation":false,"usgs":true,"family":"Naeser","given":"C.","middleInitial":"W.","affiliations":[],"preferred":false,"id":357784,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":1001476,"text":"1001476 - 1969 - Aging small Canada geese by neck plumage","interactions":[],"lastModifiedDate":"2025-02-19T16:39:07.012652","indexId":"1001476","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Aging small Canada geese by neck plumage","docAbstract":"<p>The neck plumage method, a new technique for separating immature from adult Canada geese (<i>Branta canadensis</i>) in the hand, was evaluated by comparison with the notched tail feather and cloacal examination methods. Two (1.4 percent) of 141 geese examined were misaged, resulting in a 6 percent error in the immature-adult ratio obtained by the neck plumage method. The neck plumage method is a rapid aging method and reasonable accuracy (94 percent) can be obtained. It can also be used to differentiate immatures from adults on the ground at distances up to 175 yards, but was almost impossible to use when geese were in flight. As yet, the neck plumage method has only been tested on the subspecies (<i>B. c. hutchinsii-parvipes</i> complex) in the Tall-Grass Prairie population of small Canada geese.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3799675","usgsCitation":"Higgins, K., and Schoonover, L., 1969, Aging small Canada geese by neck plumage: Journal of Wildlife Management, v. 33, no. 1, p. 212-214, https://doi.org/10.2307/3799675.","productDescription":"3 p.","startPage":"212","endPage":"214","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":129115,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Dakota","otherGeospatial":"Sand Lake National Wildlife Refuge","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -98.2913578484663,\n              45.82479670310957\n            ],\n            [\n              -98.2913578484663,\n              45.706162085769876\n            ],\n            [\n              -98.20563072343582,\n              45.706162085769876\n            ],\n            [\n              -98.20563072343582,\n              45.82479670310957\n            ],\n            [\n              -98.2913578484663,\n              45.82479670310957\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"33","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae3e4b07f02db6890fb","contributors":{"authors":[{"text":"Higgins, K.F.","contributorId":55767,"corporation":false,"usgs":true,"family":"Higgins","given":"K.F.","email":"","affiliations":[],"preferred":false,"id":311099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoonover, L.J.","contributorId":42909,"corporation":false,"usgs":true,"family":"Schoonover","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":311098,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":2001428,"text":"2001428 - 1969 - Parasites of freshwater fishes: II, Protozoa, 1, Microspoida of fishes","interactions":[],"lastModifiedDate":"2012-02-02T00:14:57","indexId":"2001428","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":22,"text":"Fish Disease Leaflet","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"20","title":"Parasites of freshwater fishes: II, Protozoa, 1, Microspoida of fishes","docAbstract":"No abstract available at this time","language":"English","publisher":"U.S. Fish and Wildlife Service","collaboration":"700/FH","usgsCitation":"Putz, R., 1969, Parasites of freshwater fishes: II, Protozoa, 1, Microspoida of fishes: Fish Disease Leaflet 20, 4 p.","productDescription":"4 p.","startPage":"0","endPage":"4","numberOfPages":"4","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":199126,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae3e4b07f02db689243","contributors":{"authors":[{"text":"Putz, R.E.","contributorId":42543,"corporation":false,"usgs":true,"family":"Putz","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":325705,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":2001385,"text":"2001385 - 1969 - Fish furunculosis","interactions":[],"lastModifiedDate":"2012-02-02T00:14:56","indexId":"2001385","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":22,"text":"Fish Disease Leaflet","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"17","title":"Fish furunculosis","docAbstract":"No abstract available at this time","language":"English","publisher":"U.S. Fish and Wildlife Service","collaboration":"656/FH","usgsCitation":"Snieszko, S.F., 1969, Fish furunculosis: Fish Disease Leaflet 17, 4 p.","productDescription":"4 p.","startPage":"0","endPage":"4","numberOfPages":"4","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":199032,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f3e4b07f02db5ef880","contributors":{"authors":[{"text":"Snieszko, S. F.","contributorId":13169,"corporation":false,"usgs":true,"family":"Snieszko","given":"S.","middleInitial":"F.","affiliations":[],"preferred":false,"id":325630,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":2001436,"text":"2001436 - 1969 - Virus disease of sockeye salmon","interactions":[],"lastModifiedDate":"2012-02-02T00:14:58","indexId":"2001436","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":22,"text":"Fish Disease Leaflet","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"14","title":"Virus disease of sockeye salmon","docAbstract":"No abstract available at this time","language":"English","publisher":"U.S. Fish and Wildlife Service","collaboration":"690/FH","usgsCitation":"Wolf, K., 1969, Virus disease of sockeye salmon: Fish Disease Leaflet 14, 3 p.","productDescription":"3 p.","startPage":"0","endPage":"3","numberOfPages":"3","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":198959,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ee4b07f02db5fdc38","contributors":{"authors":[{"text":"Wolf, K.","contributorId":16344,"corporation":false,"usgs":true,"family":"Wolf","given":"K.","email":"","affiliations":[],"preferred":false,"id":325714,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":2001384,"text":"2001384 - 1969 - Oxytetracyline residues in different tissues of trout","interactions":[],"lastModifiedDate":"2012-02-02T00:14:56","indexId":"2001384","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":89,"text":"Technical Paper","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"37","title":"Oxytetracyline residues in different tissues of trout","docAbstract":"No abstract available at this time","language":"English","publisher":"U.S. Fish and Wildlife Service","collaboration":"205e/FH","usgsCitation":"Herman, R.L., Collis, D., and Bullock, G.L., 1969, Oxytetracyline residues in different tissues of trout: Technical Paper 37, p. 1-6.","productDescription":"p. 1-6","startPage":"1","endPage":"6","numberOfPages":"6","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":199031,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae4e4b07f02db68a03f","contributors":{"authors":[{"text":"Herman, R. L.","contributorId":21101,"corporation":false,"usgs":true,"family":"Herman","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":325627,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collis, D.","contributorId":21501,"corporation":false,"usgs":true,"family":"Collis","given":"D.","email":"","affiliations":[],"preferred":false,"id":325628,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bullock, G. L.","contributorId":69498,"corporation":false,"usgs":true,"family":"Bullock","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":325629,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":2001376,"text":"2001376 - 1969 - Oxytetracyline sensitivity of selected fish pathogens","interactions":[],"lastModifiedDate":"2012-02-02T00:14:56","indexId":"2001376","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":89,"text":"Technical Paper","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"32","title":"Oxytetracyline sensitivity of selected fish pathogens","docAbstract":"No abstract available at this time","language":"English","publisher":"U.S. Fish and Wildlife Service","collaboration":"205b/FH","usgsCitation":"Bullock, G.L., and Collis, D., 1969, Oxytetracyline sensitivity of selected fish pathogens: Technical Paper 32, 9 p.","productDescription":"9 p.","startPage":"0","endPage":"9","numberOfPages":"9","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":198937,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae4e4b07f02db68a060","contributors":{"authors":[{"text":"Bullock, G. L.","contributorId":69498,"corporation":false,"usgs":true,"family":"Bullock","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":325615,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collis, D.","contributorId":21501,"corporation":false,"usgs":true,"family":"Collis","given":"D.","email":"","affiliations":[],"preferred":false,"id":325614,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":1017146,"text":"1017146 - 1969 - Intercontinental and transcontinental dissemination and transfaunation of fish parasites with emphasis on whirling disease (Myxosoma cerebralis)","interactions":[],"lastModifiedDate":"2012-02-02T00:04:34","indexId":"1017146","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":18,"text":"Abstract or summary"},"seriesTitle":{"id":465,"text":"Bulletin Wildlife Disease Association","active":false,"publicationSubtype":{"id":18}},"title":"Intercontinental and transcontinental dissemination and transfaunation of fish parasites with emphasis on whirling disease (Myxosoma cerebralis)","docAbstract":"No abstract available at this time","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin Wildlife Disease Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","collaboration":"237/FH","usgsCitation":"Hoffman, G.L., 1969, Intercontinental and transcontinental dissemination and transfaunation of fish parasites with emphasis on whirling disease (Myxosoma cerebralis), <i>in</i> Bulletin Wildlife Disease Association, v. 5, no. 3.","productDescription":"371 p.","startPage":"371","numberOfPages":"371","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":132970,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49dbe4b07f02db5e0a98","contributors":{"authors":[{"text":"Hoffman, G. L.","contributorId":70713,"corporation":false,"usgs":true,"family":"Hoffman","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":324630,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":5220429,"text":"5220429 - 1969 - Survival in wood duck broods","interactions":[],"lastModifiedDate":"2025-02-19T16:45:27.390264","indexId":"5220429","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Survival in wood duck broods","docAbstract":"<p>Mortality of wood ducklings (<i>Aix sponsa</i>) from hatching to 6 weeks of age averaged 47 percent during a 4-year study at the Patuxent Wildlife Research Center. Over 90 percent of the total mortality occurred during the first 2 weeks of life. Brood bonds began to dissolve after the fifth week. hlortality after 2 weeks was so low that Class I1 broods were believed to provide reliable estimates of production to flying age. Once-a-week brood censuses proved unreliable in estimating survival, but twice-a-xveek counts were accurate enough to estimate total broods and survival to Class II age.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3799651","usgsCitation":"McGilvrey, F., 1969, Survival in wood duck broods: Journal of Wildlife Management, v. 33, no. 1, p. 73-76, https://doi.org/10.2307/3799651.","productDescription":"4 p.","startPage":"73","endPage":"76","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":196261,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland","otherGeospatial":"Patuxent Wildlife Research Center","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -76.8166482385359,\n              39.072382156197875\n            ],\n            [\n              -76.8166482385359,\n              39.01305201803032\n            ],\n            [\n              -76.74348687025322,\n              39.01305201803032\n            ],\n            [\n              -76.74348687025322,\n              39.072382156197875\n            ],\n            [\n              -76.8166482385359,\n              39.072382156197875\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"33","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae0e4b07f02db688298","contributors":{"authors":[{"text":"McGilvrey, Frank B.","contributorId":14908,"corporation":false,"usgs":true,"family":"McGilvrey","given":"Frank B.","affiliations":[],"preferred":false,"id":331801,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70011468,"text":"70011468 - 1969 - Determination of palladium and platinum by atomic absorption","interactions":[],"lastModifiedDate":"2020-11-29T18:16:03.964309","indexId":"70011468","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3517,"text":"Talanta","active":true,"publicationSubtype":{"id":10}},"title":"Determination of palladium and platinum by atomic absorption","docAbstract":"<div id=\"aep-abstract-id4\" class=\"abstract author\"><div id=\"aep-abstract-sec-id5\"><p>Palladium and platinum are determined by atomic absorption after fire-assay concentration into a gold bead. The limit of determination is ~0·06 ppm in a 20-g sample. Serious depressive interelement interferences are removed by buffering the solutions with a mixture of cadmium and copper sulphates with cadmium and copper concentrations each at 0·5%. Substantial amounts of Ag, Al, Au, Bi, Ca, Co, Cr, Fe, Hg, K, La, Mg, Mn, Mo, Na, Ni, Pb, Te, Ti, V, Y, Zn, and the platinum metals do not interfere in the atomic-absorption determination.</p></div></div><div id=\"aep-abstract-id6\" class=\"abstract author\" lang=\"de\"><br></div>","language":"English","publisher":"Elsevier","doi":"10.1016/0039-9140(69)80080-9","issn":"00399140","usgsCitation":"Schnepfe, M., and Grimaldi, F.S., 1969, Determination of palladium and platinum by atomic absorption: Talanta, v. 16, no. 5, p. 591-595, https://doi.org/10.1016/0039-9140(69)80080-9.","productDescription":"5 p.","startPage":"591","endPage":"595","numberOfPages":"5","costCenters":[],"links":[{"id":221754,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ffbbe4b0c8380cd4f376","contributors":{"authors":[{"text":"Schnepfe, M. M.","contributorId":93622,"corporation":false,"usgs":true,"family":"Schnepfe","given":"M. M.","affiliations":[],"preferred":false,"id":361182,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grimaldi, F. S.","contributorId":94286,"corporation":false,"usgs":true,"family":"Grimaldi","given":"F.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":361183,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011562,"text":"70011562 - 1969 - The determination of the acoustic parameters of volcanic rocks from compressional velocity measurements","interactions":[],"lastModifiedDate":"2020-11-29T18:04:51.48621","indexId":"70011562","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2071,"text":"International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts","active":true,"publicationSubtype":{"id":10}},"title":"The determination of the acoustic parameters of volcanic rocks from compressional velocity measurements","docAbstract":"<p>A statistical analysis was made of the relationship of various acoustic parameters of volcanic rocks to compressional wave velocities for data obtained in a volcanic region in Nevada. Some additional samples, chiefly granitic rocks, were also included in the study to extend the range of parameters and the variety of siliceous rock types sampled. Laboratory acoustic measurements obtained on 62 dry core samples were grouped with similar measurements obtained from geophysical logging devices at several depth intervals in a hole from which 15 of the core samples had been obtained. The effects of lithostatic and hydrostatic load on changing the rock acoustic parameters measured in the hole were noticeable when compared with the laboratory measurements on the same core. The results of the analyses determined by grouping all of the data, however, indicate that dynamic Young's, shear and bulk modulus, shear velocity, shear and compressional characteristic impedance, as well as amplitude and energy reflection coefficients may be reliably estimated on the basis of the compressional wave velocities of the rocks investigated. Less precise estimates can be made of density based on the rock compressional velocity.</p><p>The possible extension of these relationships to include many siliceous rocks is suggested.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0148-9062(69)90022-9","issn":"01489062","usgsCitation":"Carroll, R.D., 1969, The determination of the acoustic parameters of volcanic rocks from compressional velocity measurements: International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, v. 6, no. 6, p. 557-579, https://doi.org/10.1016/0148-9062(69)90022-9.","productDescription":"23 p.","startPage":"557","endPage":"579","numberOfPages":"23","costCenters":[],"links":[{"id":221182,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baa9fe4b08c986b3228db","contributors":{"authors":[{"text":"Carroll, R. D.","contributorId":53373,"corporation":false,"usgs":true,"family":"Carroll","given":"R.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":361410,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70011469,"text":"70011469 - 1969 - Phosphorus fractionation diagram as a quantitative indicator of crystallization differentiation of basaltic liquids","interactions":[],"lastModifiedDate":"2020-11-29T18:14:51.227318","indexId":"70011469","displayToPublicDate":"1969-01-01T00:00:00","publicationYear":"1969","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":"Phosphorus fractionation diagram as a quantitative indicator of crystallization differentiation of basaltic liquids","docAbstract":"<p>Distribution factors of phosphorus (P in mineral/P in liquid) between phenocryst minerals and coexisting basaltic groundmass are: olivine (Fa<sub>20</sub>: 0.04 to 0.02; orthopyroxene (Fs<sub>20</sub>): 0.01; augite: 0.02 to 0.01; plagioclase: 0.02; ilmenite: 0.04. Because of the smallness of these distribution factors the ratio of phosphorus in the initial liquid to that in the residual liquid (phosphorus ratio) ideally equals the mass fraction of residual liquid minus 0.00 –0.04. The phosphorus ratio facilitates, therefore, quantitative comparison of the variation of major and minor elements with crystallization of basaltic liquids.</p><p>A<span>&nbsp;</span><i>phosphorus fractionation diagram</i><span>&nbsp;</span>is a log-log graph of the wt. % of any chemical element or oxide vs. the phosphorus ratio. The slopes of variation curves on such a fractionation diagram approximately equal unity minus the crystal aggregate/liquid distribution factor. Knowledge of the<span>&nbsp;</span><i>individual</i><span>&nbsp;</span>mineral/liquid distribution factors makes it possible to estimate the relative proportions of crystallizing minerals from the slopes of curves on a phosphorus fractionation diagram prior to the crystallization of apatite or other phosphorus-rich mineral. This was done fairly successfully for the Alae Lava Lake, Hawaii.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(69)90129-X","issn":"00167037","usgsCitation":"Anderson, A.T., and Greenland, L., 1969, Phosphorus fractionation diagram as a quantitative indicator of crystallization differentiation of basaltic liquids: Geochimica et Cosmochimica Acta, v. 33, no. 4, p. 493-505, https://doi.org/10.1016/0016-7037(69)90129-X.","productDescription":"13 p.","startPage":"493","endPage":"505","numberOfPages":"13","costCenters":[],"links":[{"id":221755,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a78b8e4b0c8380cd78777","contributors":{"authors":[{"text":"Anderson, A. T.","contributorId":71317,"corporation":false,"usgs":true,"family":"Anderson","given":"A.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":361185,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Greenland, L. P.","contributorId":56368,"corporation":false,"usgs":true,"family":"Greenland","given":"L. P.","affiliations":[],"preferred":false,"id":361184,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
]}