{"pageNumber":"5623","pageRowStart":"140550","pageSize":"25","recordCount":165626,"records":[{"id":70161899,"text":"70161899 - 1973 - Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska","interactions":[],"lastModifiedDate":"2016-01-08T15:23:59","indexId":"70161899","displayToPublicDate":"1973-08-01T01:15:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska","docAbstract":"

For reconnaissance geologic mapping and mineral resource evaluation of the Granite Fiords wilderness study area, we developed and used a system of machine-processable field notes. Preprinted field forms standardize notes and serve as checklists that insure collection of all available data. The use of this system cut in half the time required to record data at an outcrop. The system consists of three related but
different types of preprinted field sheets, a key to abbreviations and codes, and a set of written instructions. The field sheets include a
station sheet for basic outcrop data, a specimen sheet for rock samples, and a geochemical sheet for materials to be chemically analyzed. Data on the field sheets are keypunched on standard IBM cards, then arranged in subfiles and retrieved by using a card sorter. Our system is
designed specifically for a region of granitic and metamorphic rocks but is easily modified for use in different geologic terranes. We offer four
guidelines for developing a system of machine-processable field notes: (1) Time and money spent to develop the system must be worth its
anticipated benefits. (2) The system should be as flexible as possible. (3) It is necessary to tailor the system to a particular geologic terrane or project objective. (4) The system should be as simple and self-explanatory as possible.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Berg, H., and Smith, J., 1973, Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska: Journal of Research of the U.S. Geological Survey, v. 1, no. 5, p. 579-585.","productDescription":"7 p.","startPage":"579","endPage":"585","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":314059,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314058,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue5/report.pdf","text":"Report","size":"19.2 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States of America","state":"Alaska","otherGeospatial":"Granite Fiords Area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -140.9326171875,\n 60.34869562531862\n ],\n [\n -141.63574218749997,\n 59.84481485969105\n ],\n [\n -138.427734375,\n 58.950008233357046\n ],\n [\n -136.2744140625,\n 57.49221366670073\n ],\n [\n -136.0107421875,\n 56.70450561416937\n ],\n [\n -132.6708984375,\n 54.265224078605655\n ],\n [\n -130.9130859375,\n 54.67383096593114\n ],\n [\n -129.814453125,\n 55.35413531021057\n ],\n [\n -130.1220703125,\n 56.31653672211301\n ],\n [\n -132.1875,\n 57.088515327886505\n ],\n [\n -135.17578125,\n 59.866883195210214\n ],\n [\n -137.109375,\n 59.512029386502704\n ],\n [\n -139.482421875,\n 60.58696734225869\n ],\n [\n -140.9326171875,\n 60.34869562531862\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5690ebd1e4b09c7f9a218bee","contributors":{"authors":[{"text":"Berg, Henry C.","contributorId":73176,"corporation":false,"usgs":true,"family":"Berg","given":"Henry C.","affiliations":[],"preferred":false,"id":588075,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, James G.","contributorId":98712,"corporation":false,"usgs":true,"family":"Smith","given":"James G.","affiliations":[],"preferred":false,"id":588076,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70161888,"text":"70161888 - 1973 - A calorimetric determination of the standard enthalpies of formation of huntite, CaMg3 (CO3)4 , and artinite, Mg2(OH)2 CO3 * 3H2O, and their standard Gibbs free energies of formation","interactions":[],"lastModifiedDate":"2016-01-08T14:24:39","indexId":"70161888","displayToPublicDate":"1973-08-01T01:15:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"A calorimetric determination of the standard enthalpies of formation of huntite, CaMg3 (CO3)4 , and artinite, Mg2(OH)2 CO3 * 3H2O, and their standard Gibbs free energies of formation","docAbstract":"

The enthalpies of formation, ΔH°f, of huntite, CaMg3(CO3)4 , and artinite, Mg2(OH)2CO3 * 3H2O, have been determined by HCl solution calorimetry using a constant-volume isoperibol reaction calorimeter. For the reaction CaO(c) + 3MgO(c) + 4CO2 (g) = CaMg3(CO3)4 (c), the enthalpy change at 298.15 K, ΔH°298 , is -123,203±145 cal mol-1. For the reaction 2MgO(c) + 4H2O(l) + CO2(g)=Mg2(OH)2CO3 * 3H2O(c), we obtained -45,132±100 cal mol-1. These results combined with the standard enthalpies of formation of CaO, MgO, H2O, and CO2 lead to ΔH°298 (huntite) = -1,082,600±375 cal mol-1 and ΔH°298  (artinite) = -698,043±170 cal mol-1. Using recently determined values for the standard entropies of huntite, CaMg3(CO3)4, and artinite, Mg2(OH)2CO3 * 3H2O, and of Mg, Ca, C, O2 , and H2 , we calculate ΔG°f,298 (huntite) = -1,004,707±390 cal mol-1 and ΔG°f,298 (artinite) = -613,924±180 cal mol-1.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Hemingway, B., and Robie, R.A., 1973, A calorimetric determination of the standard enthalpies of formation of huntite, CaMg3 (CO3)4 , and artinite, Mg2(OH)2 CO3 * 3H2O, and their standard Gibbs free energies of formation: Journal of Research of the U.S. Geological Survey, v. 1, no. 5, p. 535-541.","productDescription":"7 p.","startPage":"535","endPage":"541","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":314047,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314046,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue5/report.pdf","text":"Report","size":"19.2 MB","linkFileType":{"id":1,"text":"pdf"}}],"volume":"1","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5690ebbce4b09c7f9a218bc8","contributors":{"authors":[{"text":"Hemingway, Bruce S.","contributorId":13689,"corporation":false,"usgs":true,"family":"Hemingway","given":"Bruce S.","affiliations":[],"preferred":false,"id":588049,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robie, Richard A.","contributorId":92235,"corporation":false,"usgs":true,"family":"Robie","given":"Richard","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":588050,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70161864,"text":"70161864 - 1973 - Permian paleogeography of the Arctic","interactions":[],"lastModifiedDate":"2016-01-07T13:43:34","indexId":"70161864","displayToPublicDate":"1973-08-01T01:15:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Permian paleogeography of the Arctic","docAbstract":"

Three large land areas were dominant in the Arctic during the Permian: Fennoscandia, central and southern Siberia (Angara), and Canada. Smaller landmasses were in China, the Seward-Chukotskiy region, northern and eastern Siberia, and near Alaska. Coal deposits and strata bearing land plants covered a large area in central Siberia; saline basins containing red beds formed in the Zechstein, Perm, and West Texas basins as the seas withdrew, generally in the later Permian. Eugeosynclinal troughs, apparently limited to the Pacific border regions, were marked by volcanism and deposition of predominantly clastic sediments in many areas. Platform and miogeosynclinal deposits, dominated by carbonate rocks, preceded saline deposition in the basins and persisted on shallow shelves adjacent to the geosynclines. The Arctic Permian marine fauna evolved in middle Permian time because of partial isolation of the Arctic areas from the southern ocean. Endemism, latitudinal temperature controls, and the effect of ocean currents explain in large part the faunal patterns in Permian seas. Post-Permian tectonic movements account for anomalies in the present positions of some rock sequences and fossils. Northeasterly drift and counterclockwise
rotation of the northern landmasses are suggested. Right-lateral shear along the southern edge of Asia is supported, followed by
northward movement of peninsular India.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Dutro, J.T., and Saldukas, R.B., 1973, Permian paleogeography of the Arctic: Journal of Research of the U.S. Geological Survey, v. 1, no. 5, p. 501-507.","productDescription":"7 p.","startPage":"501","endPage":"507","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":314020,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue5/report.pdf","text":"Report","size":"19.2 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":314021,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"568f9a5de4b0e7a44bc63de2","contributors":{"authors":[{"text":"Dutro, J. Thomas Jr.","contributorId":102878,"corporation":false,"usgs":true,"family":"Dutro","given":"J.","suffix":"Jr.","email":"","middleInitial":"Thomas","affiliations":[],"preferred":false,"id":587986,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saldukas, R. Birute","contributorId":152115,"corporation":false,"usgs":false,"family":"Saldukas","given":"R.","email":"","middleInitial":"Birute","affiliations":[],"preferred":false,"id":587987,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70161886,"text":"70161886 - 1973 - The Dun Mountain ultramafic belt Permian oceanic crust and upper mantle in New Zealand","interactions":[],"lastModifiedDate":"2018-06-15T11:40:05","indexId":"70161886","displayToPublicDate":"1973-08-01T01:15:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"The Dun Mountain ultramafic belt Permian oceanic crust and upper mantle in New Zealand","docAbstract":"

Geologic evidence suggests that the Dun Mountain ultramafic belt in New Zealand is the basal part of a Lower Permian ophiolite suite. By analogy with other ophiolite suites, and as a result of marine geophysical studies of the present ocean basins, the ophiolite is believed to represent oceanic crust and upper mantle upon which the Upper Permian Maitai Group was deposited. After this, much of the ultramafic belt was extensively deformed to tectonic melange.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Blake, M., and Landis, C.A., 1973, The Dun Mountain ultramafic belt Permian oceanic crust and upper mantle in New Zealand: Journal of Research of the U.S. Geological Survey, v. 1, no. 5, p. 529-534.","productDescription":"6 p.","startPage":"529","endPage":"534","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":314043,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314042,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue5/report.pdf","text":"Report","size":"19.2 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"New Zealand","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 172.2216796875,\n -40.44694705960048\n ],\n [\n 171.925048828125,\n -40.88860081193034\n ],\n [\n 171.968994140625,\n -41.27780646738183\n ],\n [\n 171.221923828125,\n -41.648288312595334\n ],\n [\n 171.156005859375,\n -42.204107493733176\n ],\n [\n 170.804443359375,\n -42.69051116998239\n ],\n [\n 170.167236328125,\n -43.03677585761058\n ],\n [\n 168.28857421875,\n -43.953282041980174\n ],\n [\n 166.44287109374997,\n -45.4215881232909\n ],\n [\n 166.212158203125,\n -46.1722229784554\n ],\n [\n 167.05810546875,\n -46.42271253466718\n ],\n [\n 167.431640625,\n -46.415138776492\n ],\n [\n 167.958984375,\n -46.521075663842836\n ],\n [\n 168.28857421875,\n -46.709735944071554\n ],\n [\n 168.46435546875,\n -46.86770273172813\n ],\n [\n 169.442138671875,\n -46.86770273172813\n ],\n [\n 170.013427734375,\n -46.61171462536895\n ],\n [\n 170.35400390625,\n -46.057985244793024\n ],\n [\n 170.782470703125,\n -45.92822950933616\n ],\n [\n 170.8154296875,\n -45.65244828675086\n ],\n [\n 170.90332031249997,\n -45.4215881232909\n ],\n [\n 171.01318359374997,\n -45.096791463947376\n ],\n [\n 171.353759765625,\n -44.91813929958515\n ],\n [\n 171.287841796875,\n -44.57481740467029\n ],\n [\n 171.474609375,\n -44.276671273775165\n ],\n [\n 171.771240234375,\n -44.16644466445859\n ],\n [\n 172.28759765625,\n -43.96909818325172\n ],\n [\n 172.957763671875,\n -43.92163712834673\n ],\n [\n 173.243408203125,\n -43.810747313446974\n ],\n [\n 173.0126953125,\n -43.47684039777893\n ],\n [\n 172.869873046875,\n -43.28520334369382\n ],\n [\n 173.111572265625,\n -43.052833917627936\n ],\n [\n 173.4521484375,\n -42.867912483915305\n ],\n [\n 173.6279296875,\n -42.553080288955805\n ],\n [\n 173.792724609375,\n -42.382894009614034\n ],\n [\n 174.4189453125,\n -41.67291181960209\n ],\n [\n 174.210205078125,\n -41.39329428878487\n ],\n [\n 174.517822265625,\n -40.96330795307352\n ],\n [\n 173.946533203125,\n -40.51379915504413\n ],\n [\n 172.2216796875,\n -40.44694705960048\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5690ebd0e4b09c7f9a218be8","contributors":{"authors":[{"text":"Blake, M.C. Jr.","contributorId":27094,"corporation":false,"usgs":true,"family":"Blake","given":"M.C.","suffix":"Jr.","affiliations":[],"preferred":false,"id":588047,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Landis, C. A.","contributorId":152127,"corporation":false,"usgs":false,"family":"Landis","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":588048,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70161869,"text":"70161869 - 1973 - Disseminated pyrite in a latite porphyry at Texan Mountain, Hudspeth County, Texas","interactions":[],"lastModifiedDate":"2016-01-07T14:38:09","indexId":"70161869","displayToPublicDate":"1973-08-01T01:15:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Disseminated pyrite in a latite porphyry at Texan Mountain, Hudspeth County, Texas","docAbstract":"

A pyrite-bearing latite porphyry that contains fragments of syenite and a quartz porphyry intruded into the Cretaceous Cox Sandstone are well exposed in a roadcut at Texan Mountain, Hudspeth County, Tex. The pyrite, which occurs along tiny fractures as well as disseminated, and the multiple episodes of intrusion, coupled with copper minerals in veins in the overlying Cox Sandstone, indicate a slight potential for porphyry-type copper or molybdenum deposits at depth.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Mullens, T.E., 1973, Disseminated pyrite in a latite porphyry at Texan Mountain, Hudspeth County, Texas: Journal of Research of the U.S. Geological Survey, v. 1, no. 5, p. 519-521.","productDescription":"4 p.","startPage":"519","endPage":"521","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":314027,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314026,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue5/report.pdf","text":"Report","size":"19.2 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States of America","state":"Texas","county":"Hudspeth","otherGeospatial":"Texan Mountain","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.37472248077393,\n 31.17164812823093\n ],\n [\n -105.37231922149658,\n 31.17205203909738\n ],\n [\n -105.37124633789061,\n 31.170987179461175\n ],\n [\n -105.37158966064452,\n 31.168269897172642\n ],\n [\n -105.36922931671143,\n 31.165625980127313\n ],\n [\n -105.36369323730467,\n 31.163312492181564\n ],\n [\n -105.35794258117676,\n 31.16232098005371\n ],\n [\n -105.35768508911133,\n 31.16426727183109\n ],\n [\n -105.36210536956787,\n 31.169224626859496\n ],\n [\n -105.36399364471434,\n 31.170362945832437\n ],\n [\n -105.36489486694336,\n 31.17476921288109\n ],\n [\n -105.37287712097167,\n 31.17664181429909\n ],\n [\n -105.38008689880371,\n 31.17686211791375\n ],\n [\n -105.37879943847655,\n 31.173887975871395\n ],\n [\n -105.37472248077393,\n 31.17164812823093\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"568f9a4ee4b0e7a44bc63d84","contributors":{"authors":[{"text":"Mullens, Thomas E.","contributorId":14817,"corporation":false,"usgs":true,"family":"Mullens","given":"Thomas","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":587996,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70161865,"text":"70161865 - 1973 - Pliocene marine fossils in the Paso Robles Formation, California","interactions":[],"lastModifiedDate":"2016-01-07T13:57:13","indexId":"70161865","displayToPublicDate":"1973-08-01T01:15:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Pliocene marine fossils in the Paso Robles Formation, California","docAbstract":"

Marine invertebrates from the Paso Robles Formation recently discovered near Atascadero, Calif., indicate that the basal part of this chiefly nonmarine deposit is of provincial early Pliocene age. Heretofore the lack of direct fossil or radiometric evidence of the age of the Paso Robles has made it a difficult unit to place in the late Cenozoic history of the Coast Ranges. The assemblage is dominated by Ostrea vespertina and by Nettastomella rostrata, a rock-boring bivalve; its mode of preservation indicates that the fossils are in place and have
not been recycled from older marine formations. This occurrence suggests that during the early Pliocene a seaway connected the present
southern Salinas Valley area with the northern part of the Santa Maria basin; the fossils occur about halfway between the southernmost
exposures of the Pancho Rico Formation near San Miguel and fossiliferous strata east of Pismo Beach, both marine units of early Pliocene age.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Addicott, W.O., and Galehouse, J.S., 1973, Pliocene marine fossils in the Paso Robles Formation, California: Journal of Research of the U.S. Geological Survey, v. 1, no. 5, p. 509-514.","productDescription":"6 p.","startPage":"509","endPage":"514","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":314023,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":314022,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue5/report.pdf","text":"Report","size":"19.2 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States of America","state":"California","otherGeospatial":"Paso Robles Formation","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.728271484375,\n 37.93553306183642\n ],\n [\n -122.48657226562499,\n 38.272688535980976\n ],\n [\n -121.9921875,\n 38.47939467327645\n ],\n [\n -121.46484375,\n 38.522384090200845\n ],\n [\n -121.08032226562499,\n 38.522384090200845\n ],\n [\n -120.92651367187499,\n 38.20365531807149\n ],\n [\n -120.60791015625,\n 37.69251435532741\n ],\n [\n -120.0146484375,\n 37.23032838760387\n ],\n [\n -119.53125,\n 36.85325222344018\n ],\n [\n -119.10278320312499,\n 36.40359962073253\n ],\n [\n -118.88305664062499,\n 35.808904044068626\n ],\n [\n -118.91601562499999,\n 35.4159149234562\n ],\n [\n -119.5751953125,\n 35.12889434101051\n ],\n [\n -120.2783203125,\n 35.110921809704756\n ],\n [\n -120.69580078125001,\n 35.08395557927643\n ],\n [\n -120.970458984375,\n 35.23664622093195\n ],\n [\n -122.025146484375,\n 36.35052700542763\n ],\n [\n -122.728271484375,\n 37.93553306183642\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"568f9a60e4b0e7a44bc63de9","contributors":{"authors":[{"text":"Addicott, Warren O.","contributorId":80668,"corporation":false,"usgs":true,"family":"Addicott","given":"Warren","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":587988,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Galehouse, Jon S.","contributorId":57894,"corporation":false,"usgs":true,"family":"Galehouse","given":"Jon","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":587989,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70211009,"text":"70211009 - 1973 - Gold abundance in igneous rocks; bearing on gold mineralization","interactions":[],"lastModifiedDate":"2020-07-10T12:58:46.334158","indexId":"70211009","displayToPublicDate":"1973-07-09T14:21:49","publicationYear":"1973","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":"Gold abundance in igneous rocks; bearing on gold mineralization","docAbstract":"

Review of quantitative data, restricted range in gold content (rarely more than 10 ppb, generally below 5 ppb), mafic rocks have more, so do early crystallizing minerals, no use in exploration, factors other than concentration determine mineralization; examples

","language":"English","publisher":"American Geological Institute","doi":"10.2113/gsecongeo.68.2.168","usgsCitation":"Tilling, R.I., Gottfried, D., and Rowe, J., 1973, Gold abundance in igneous rocks; bearing on gold mineralization: Economic Geology, v. 68, no. 2, p. 168-186, https://doi.org/10.2113/gsecongeo.68.2.168.","productDescription":"19 p.","startPage":"168","endPage":"186","costCenters":[{"id":153,"text":"California Volcano Observatory","active":false,"usgs":true}],"links":[{"id":376228,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"68","issue":"2","noUsgsAuthors":false,"publicationDate":"1973-04-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Tilling, Robert I. 0000-0003-4263-7221 rtilling@usgs.gov","orcid":"https://orcid.org/0000-0003-4263-7221","contributorId":2567,"corporation":false,"usgs":true,"family":"Tilling","given":"Robert","email":"rtilling@usgs.gov","middleInitial":"I.","affiliations":[],"preferred":true,"id":792411,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gottfried, David","contributorId":82295,"corporation":false,"usgs":true,"family":"Gottfried","given":"David","email":"","affiliations":[],"preferred":false,"id":792412,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rowe, Jack J.","contributorId":117455,"corporation":false,"usgs":true,"family":"Rowe","given":"Jack J.","affiliations":[],"preferred":false,"id":792413,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70211008,"text":"70211008 - 1973 - Boulder Batholith, Montana: A product of two contemporaneous but chemically distinct magma series","interactions":[],"lastModifiedDate":"2020-07-09T19:04:19.191197","indexId":"70211008","displayToPublicDate":"1973-07-09T13:52:39","publicationYear":"1973","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":"Boulder Batholith, Montana: A product of two contemporaneous but chemically distinct magma series","docAbstract":"

Rocks of the Late Cretaceous composite Boulder batholith, though successively emplaced in a relatively small segment of the Earth's crust within a very brief time span (78 to 68 m.y.), can be grouped chemically into two magma series: (1) the main series, defined principally by plutons in the central and northern parts of the batholith; and (2) the sodic series, defined mostly by plutons in the southern part. For any given SiO2 content, the rocks of the main series tend to be higher in K2O and lower in Na2O than rocks of the sodic series. The chemical distinction between the two series proposed is also expressed by variation patterns for U, Th, Rb, and Sr abundances, by lead isotope compositions, but not by strontium isotope compositions.

The prebatholith Elkhorn Mountains Volcanics (Late Cretaceous), especially the mafic members, are chemically and isotopically similar to the rocks of the main series, confirming geologic evidence of the genetic association between them. The postbatholith Lowland Creek Volcanics (early Eocene), though chemically more closely related to the sodic series, isotopically are more akin to, but slightly more radiogenic than, the main series. Post–Lowland Creek volcanic rocks (Miocene or Pliocene) are compositionally similar to the sodic series rocks. Spatial distribution of the batholith and the volcanic rocks exhibits a very crude chemical zonation of the region: for a given silica content, relatively more potassic rocks (main series and prebatholith volcanic rocks) tend to occur mainly in the north and east, whereas relatively more sodic rocks (sodic series and postbatholith volcanic rocks) predominate in the south and west.

Available field, chemical, and isotopic evidence collectively suggests that the observed compositional variations for the Boulder batholith are most reasonably interpreted in terms of a model involving two magma series derived from two or more magma sources within the lower crust or upper mantle. These source regions are interred to vary chemically and isotopically, either laterally or vertically; in view of the rather small areal extent of the Boulder batholith, however, a vertically zoned source region is more probable.

","language":"English","publisher":"GSA","doi":"10.1130/0016-7606(1973)84<3879:BBMAPO>2.0.CO;2","usgsCitation":"Tilling, R.I., 1973, Boulder Batholith, Montana: A product of two contemporaneous but chemically distinct magma series: GSA Bulletin, v. 84, no. 12, p. 3879-3900, https://doi.org/10.1130/0016-7606(1973)84<3879:BBMAPO>2.0.CO;2.","productDescription":"22 p.","startPage":"3879","endPage":"3900","costCenters":[{"id":153,"text":"California Volcano Observatory","active":false,"usgs":true}],"links":[{"id":376227,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Montana","otherGeospatial":"Boulder Batholith, Montana","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.18115234375,\n 45.78284835197676\n ],\n [\n -111.741943359375,\n 45.78284835197676\n ],\n [\n -111.741943359375,\n 46.81509864599243\n ],\n [\n -113.18115234375,\n 46.81509864599243\n ],\n [\n -113.18115234375,\n 45.78284835197676\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"84","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Tilling, Robert I. 0000-0003-4263-7221 rtilling@usgs.gov","orcid":"https://orcid.org/0000-0003-4263-7221","contributorId":2567,"corporation":false,"usgs":true,"family":"Tilling","given":"Robert","email":"rtilling@usgs.gov","middleInitial":"I.","affiliations":[],"preferred":true,"id":792410,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1001627,"text":"1001627 - 1973 - Analysis of radiotracking data using digitized habitat maps","interactions":[],"lastModifiedDate":"2025-02-24T16:32:54.726748","indexId":"1001627","displayToPublicDate":"1973-07-06T00:00:00","publicationYear":"1973","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":"Analysis of radiotracking data using digitized habitat maps","docAbstract":"A method is described that provides a rapid and accurate analysis of habitat used by radio-equipped animals. The digitizer (basically an X-Y plotter in reverse) converts maps into digital form by describing each habitat unit as a polygon that closely approximates the actual shape of the unit. The coordinates of each polygon are then stored on magnetic tape. Habitat classification data and other information are coded and combined with the proper polygon coordinates. This results in one file containing all habitat data. A computer program with inputs of tracking data and habitat data provides a listing of the habitat used by the animals studied. Analysis of habitat used by radio-equipped ducks is demonstrated using this method.","language":"English","publisher":"Wiley","doi":"10.2307/3800133","usgsCitation":"Gilmer, D., Miller, S., and Cowardin, L., 1973, Analysis of radiotracking data using digitized habitat maps: Journal of Wildlife Management, v. 37, no. 3, p. 404-409, https://doi.org/10.2307/3800133.","productDescription":"6 p.","startPage":"404","endPage":"409","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":130529,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Minnesota","otherGeospatial":"north-central Minnesota","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -95.9482547291478,\n 48.36578955797768\n ],\n [\n -95.9482547291478,\n 46.745802177977566\n ],\n [\n -93.07791800075094,\n 46.745802177977566\n ],\n [\n -93.07791800075094,\n 48.36578955797768\n ],\n [\n -95.9482547291478,\n 48.36578955797768\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"37","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acfe4b07f02db6803fd","contributors":{"authors":[{"text":"Gilmer, D.S.","contributorId":22270,"corporation":false,"usgs":true,"family":"Gilmer","given":"D.S.","email":"","affiliations":[],"preferred":false,"id":311375,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, S.E.","contributorId":31342,"corporation":false,"usgs":true,"family":"Miller","given":"S.E.","email":"","affiliations":[],"preferred":false,"id":311376,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cowardin, L.M.","contributorId":106435,"corporation":false,"usgs":true,"family":"Cowardin","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":311377,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1001287,"text":"1001287 - 1973 - Mercury residues in pintails breeding in North Dakota","interactions":[],"lastModifiedDate":"2025-02-24T16:36:24.851935","indexId":"1001287","displayToPublicDate":"1973-07-06T00:00:00","publicationYear":"1973","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":"Mercury residues in pintails breeding in North Dakota","docAbstract":"

Livers of 42 pintail hens (Anas acuta) breeding in eastern North Dakota during the spring and early summer of 1969 and 1970 were analyzed for total mercury by the neutron activation technique. Mercury content on a wet weight basis ranged from 0.055 ppm to 9.512 ppm and averaged 0.888 ± 1.796 ppm (SD). Liver mercury levels of hens collected in early spring (prior to planting of crops) were significantly lower than those of hens taken late in the nesting season (P < 0.01). Mercury residues among prelaying, laying, and postlaying groups collected following the onset of spring planting did not differ significantly (P > 0.05). Albumen mercury residue was correlated with liver mercury content (r = 0.756, P < 0.05). Mercury content in livers of five wild juveniles averaged 0.123 ± 0.074 ppm.

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Dakota\",\"nation\":\"USA \"}}]}","volume":"37","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ae4b07f02db624d98","contributors":{"authors":[{"text":"Krapu, Gary L.","contributorId":56994,"corporation":false,"usgs":true,"family":"Krapu","given":"Gary L.","affiliations":[],"preferred":false,"id":310813,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Swanson, G.A.","contributorId":49299,"corporation":false,"usgs":true,"family":"Swanson","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":310812,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nelson, H.K.","contributorId":21489,"corporation":false,"usgs":true,"family":"Nelson","given":"H.K.","email":"","affiliations":[],"preferred":false,"id":310811,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70241807,"text":"70241807 - 1973 - Hydraulics of sheetlike solution cavities","interactions":[],"lastModifiedDate":"2023-03-28T01:22:05.060537","indexId":"70241807","displayToPublicDate":"1973-07-01T20:17:14","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Hydraulics of sheetlike solution cavities","docAbstract":"

The sheetlike solution cavities that supply water to most wells in central Tennessee are 100 to 2,500 feet wide and less than 0.2 inch high. These dimensions have a scale similar to those in Hele-Shaw models. Both logical and mathematical evidence indicate laminar ground-water flow, except close to pumping wells. The Theis nonequilibrium formula may be used to analyze aquifer-test data and to calculate significant values for transmissivity and storage. The Navier-Stokes equation and the Darcy equation for steady-state conditions may be used to estimate cavity dimensions.

","language":"English","publisher":"The Groundwater Association","doi":"10.1111/j.1745-6584.1973.tb02976.x","usgsCitation":"Moore, G.K., 1973, Hydraulics of sheetlike solution cavities: Groundwater, v. 11, no. 4, p. 4-11, https://doi.org/10.1111/j.1745-6584.1973.tb02976.x.","productDescription":"8 p.","startPage":"4","endPage":"11","costCenters":[],"links":[{"id":414793,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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\"}}]}","volume":"11","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-07-06","publicationStatus":"PW","contributors":{"authors":[{"text":"Moore, Gerald K.","contributorId":14377,"corporation":false,"usgs":true,"family":"Moore","given":"Gerald","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":867771,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70241484,"text":"70241484 - 1973 - Thermochemical approximations for sulfosalts","interactions":[],"lastModifiedDate":"2023-03-21T18:08:34.521567","indexId":"70241484","displayToPublicDate":"1973-07-01T12:54:46","publicationYear":"1973","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":"Thermochemical approximations for sulfosalts","docAbstract":"

Most sulfosalts may be regarded as intermediate phases on joins between simple sulfide components (e.g., all lead sulfbismuthinides lie on the PbS-Bi 2 S 3 join). Many of the structures are characterized by subunits whose individual structures are similar to those of the component simple sulfides (e.g., galena-like and stibnite-like layers in the lead sulfantimonides). Therefore, as a first approximation one may estimate the properties of many sulfosalts in terms of mixtures of the simple sulfides.Recent work has shown that the free energy of reaction from the end-member sulfides, delta G m , for more than 20 sulfosalts is usually less negative than the hypothetical ideal free energy of mixing and that the standard free energy of formation, delta G degrees , per gram atom of sulfur in the formula may be represented as:delta G degrees = (N a delta G a degrees + . . . N i delta G i [degree) + (1.2 + or - 0.8)(N a RT ln N a + . . . N i RT ln N i )where N i is the mole fraction of the i-th simple sulfide component, R is the gas constant, and T is temperature in kelvins. The first term is far larger than the second. Estimates made for compounds in which the structural environment for the metals is quite different from that in the end-member sulfides, e.g., enargite, are subject to the greatest uncertainty.The estimated free energies may permit prediction of solubilities to a precision sufficient for many purposes, e.g., for H. C. Helgeson's computer-modeled hydrothermal systems. One may introduce some predictive capability into experimental design and anticipate some aspects of phase diagrams. This is especially true for redox reactions such as the behavior of proustite in the oxidized zone or the partial reduction of jamesonite to antimony + galena + pyrrhotite. However, other aspects, such as the prediction of the configuration of joins, e.g., PbS-As 2 S 3 , requires greater precision than the present rough estimates.

","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.68.4.493","usgsCitation":"Craig, J.R., and Barton, P.B., 1973, Thermochemical approximations for sulfosalts: Economic Geology, v. 68, no. 4, p. 493-506, https://doi.org/10.2113/gsecongeo.68.4.493.","productDescription":"14 p.","startPage":"493","endPage":"506","costCenters":[],"links":[{"id":414462,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"68","issue":"4","noUsgsAuthors":false,"publicationDate":"1973-07-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Craig, James R.","contributorId":303278,"corporation":false,"usgs":false,"family":"Craig","given":"James","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":866992,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barton, Paul B. Jr.","contributorId":68406,"corporation":false,"usgs":true,"family":"Barton","given":"Paul","suffix":"Jr.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":866993,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241198,"text":"70241198 - 1973 - Potassium-Argon ages for minerals from the Ross of Mull, Argyllshire, Scotland","interactions":[],"lastModifiedDate":"2023-03-14T16:51:35.93667","indexId":"70241198","displayToPublicDate":"1973-07-01T11:31:43","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3361,"text":"Scottish Journal of Geology","active":true,"publicationSubtype":{"id":10}},"title":"Potassium-Argon ages for minerals from the Ross of Mull, Argyllshire, Scotland","docAbstract":"

Sixteen K-Ar ages for samples of biotite and amphibole from the Ross of Mull and analytical data for the standards Bern 4M and W1 are presented. Ages determined for biotite and amphibole samples from the Caledonian pluton average 423 ± 4 m.y. and 416 ± 4 m.y. respectively. Field observations combined with gravity data indicate that this intrusion was guided by the Moine thrust plane. These ages therefore provide a minimum age for the Moine thrust and their concordance is interpreted in relation to the retentivity of the dated amphiboles to 40Ar inferred from electron microprobe analyses of their composition. A biotite sample from a minette dyke cutting the pluton yielded an age of 406 ± 10 m.y., whereas two samples of amphibole from a fourchite dyke in the Moine country rock yielded early Permian ages of 276 ± 7 m.y. and 274 ± 8 m.y.

","language":"English","publisher":"Geological Society of London","doi":"10.1144/sjg09020147","usgsCitation":"Beckinsale, R.D., and Obradovich, J.D., 1973, Potassium-Argon ages for minerals from the Ross of Mull, Argyllshire, Scotland: Scottish Journal of Geology, v. 9, no. 2, p. 147-156, https://doi.org/10.1144/sjg09020147.","productDescription":"10 p.","startPage":"147","endPage":"156","costCenters":[],"links":[{"id":414101,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Scotland, United Kingdom","county":"Argyllshire","otherGeospatial":"Isle of Mull, Ross of Mull","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -5.983143686478229,\n 56.38821087966829\n ],\n [\n -5.994130014602689,\n 56.38631032479125\n ],\n [\n -6.012669443314195,\n 56.39087149716488\n ],\n [\n -6.020909189408229,\n 56.38745066909826\n ],\n [\n -6.015416025344649,\n 56.374524767549644\n ],\n [\n -6.022282480423456,\n 56.36806017196233\n ],\n [\n -6.092320322219905,\n 56.35322548511729\n ],\n [\n -6.0950669042516665,\n 56.34980127604925\n ],\n [\n -6.106739877884422,\n 56.34675727654417\n ],\n [\n -6.136952280228655,\n 56.3501817589061\n ],\n [\n -6.135578989212121,\n 56.344093577691865\n ],\n [\n -6.156178354447121,\n 56.34066854870633\n ],\n [\n -6.1795243017126325,\n 56.343713034100375\n ],\n [\n -6.191883920853655,\n 56.335720741747394\n ],\n [\n -6.201496957962888,\n 56.34066854870633\n ],\n [\n -6.21522986811911,\n 56.33914621489993\n ],\n [\n -6.225529550735303,\n 56.34599623870935\n ],\n [\n -6.2406357519081155,\n 56.34675727654417\n ],\n [\n -6.255741953079593,\n 56.344093577691865\n ],\n [\n -6.25368201655607,\n 56.335340114636665\n ],\n [\n -6.2653549901888255,\n 56.33039161670618\n ],\n [\n -6.2715347997593085,\n 56.34066854870633\n ],\n [\n -6.296254038040047,\n 56.347137789768055\n ],\n [\n -6.319599985306837,\n 56.34637675952473\n ],\n [\n -6.341572641555757,\n 56.35094271323308\n ],\n [\n -6.35667884272857,\n 56.34904029894784\n ],\n [\n -6.377964853470559,\n 56.338765621957606\n ],\n [\n -6.374531625931837,\n 56.32544247711155\n ],\n [\n -6.379338144485786,\n 56.32087347099852\n ],\n [\n -6.382771372024507,\n 56.3060204244716\n ],\n [\n -6.40268409175124,\n 56.28620737573476\n ],\n [\n -6.369038461868257,\n 56.28049016421204\n ],\n [\n -6.35736548823553,\n 56.27019702905858\n ],\n [\n -6.305867075150587,\n 56.262189342017365\n ],\n [\n -6.261235117141808,\n 56.262952051086444\n ],\n [\n -6.247502206985558,\n 56.284301733545874\n ],\n [\n -6.223469614211808,\n 56.28087133824309\n ],\n [\n -6.212483286087348,\n 56.2854451302573\n ],\n [\n -6.1808975927278595,\n 56.282777151406094\n ],\n [\n -6.169224619095104,\n 56.2854451302573\n ],\n [\n -6.156864999954081,\n 56.282777151406094\n ],\n [\n -6.141072153531496,\n 56.28277719006442\n ],\n [\n -6.121159422440002,\n 56.294210061650205\n ],\n [\n -6.087513792558326,\n 56.2949721323709\n ],\n [\n -6.079274046464349,\n 56.298401262577585\n ],\n [\n -6.055241405951676,\n 56.289256211714786\n ],\n [\n -6.038075268256705,\n 56.290780535506144\n ],\n [\n -5.985890209663495,\n 56.31858876892045\n ],\n [\n -5.969410717475483,\n 56.30982945466073\n ],\n [\n -5.928211987006762,\n 56.32087347703174\n ],\n [\n -5.885639965522813,\n 56.350562243995796\n ],\n [\n -5.983143686478229,\n 56.38821087966829\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"9","issue":"2","noUsgsAuthors":false,"publicationDate":"2022-06-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Beckinsale, R. D.","contributorId":303049,"corporation":false,"usgs":false,"family":"Beckinsale","given":"R.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":866414,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Obradovich, J. D.","contributorId":48966,"corporation":false,"usgs":true,"family":"Obradovich","given":"J.","middleInitial":"D.","affiliations":[],"preferred":false,"id":866415,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241234,"text":"70241234 - 1973 - Geochemical and fluid zonation at Copper Canyon, Lander County, Nevada","interactions":[],"lastModifiedDate":"2023-03-15T16:33:29.845752","indexId":"70241234","displayToPublicDate":"1973-07-01T11:22:14","publicationYear":"1973","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":"Geochemical and fluid zonation at Copper Canyon, Lander County, Nevada","docAbstract":"

No abstract available.

","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.68.4.565","usgsCitation":"Theodore, T., and Nash, J.T., 1973, Geochemical and fluid zonation at Copper Canyon, Lander County, Nevada: Economic Geology, v. 68, no. 4, p. 565-570, https://doi.org/10.2113/gsecongeo.68.4.565.","productDescription":"6 p.","startPage":"565","endPage":"570","costCenters":[],"links":[{"id":414236,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","county":"Lander County","otherGeospatial":"Copper Canyon","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.29596923232097,\n 40.62340380643556\n ],\n [\n -117.29596923232097,\n 40.457249944231535\n ],\n [\n -116.95675809563457,\n 40.457249944231535\n ],\n [\n -116.95675809563457,\n 40.62340380643556\n ],\n [\n -117.29596923232097,\n 40.62340380643556\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"68","issue":"4","noUsgsAuthors":false,"publicationDate":"1973-07-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Theodore, Ted G.","contributorId":57840,"corporation":false,"usgs":true,"family":"Theodore","given":"Ted G.","affiliations":[],"preferred":false,"id":866608,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nash, J. Thomas","contributorId":26306,"corporation":false,"usgs":true,"family":"Nash","given":"J.","email":"","middleInitial":"Thomas","affiliations":[],"preferred":false,"id":866609,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241914,"text":"70241914 - 1973 - The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda","interactions":[],"lastModifiedDate":"2023-03-31T13:37:40.751347","indexId":"70241914","displayToPublicDate":"1973-07-01T10:41:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2614,"text":"Lethaia","active":true,"publicationSubtype":{"id":10}},"displayTitle":"The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda","title":"The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda","docAbstract":"

Knightoconus, a new genus of the Hypseloconidae (Mollusca: Monoplacophora) from rocks of early Franconian age in Antarctica, is multiseptate. The multiple septa are a criticàl feature to be expected in a form ancestral to cephalopods. Fossil cephalopods, however, invariably have a siphuncle as well as septa; some gastropods, some hyolithids, and some monoplacophorans also have septa but lack a siphuncle. Therefore, only the siphuncle can be considered a unique and particularly significant feature of the cephalopod shell. Hypothetical reconstructions of molluscan anatomy support the notion that cephalopods may have been derived directly from a hypseloconid having a high, slightly curved, multiseptate, bilaterally symmetrical shell, by the subsequent development of a siphuncle.

","language":"English","publisher":"Geological Society of America","doi":"10.1111/j.1502-3931.1973.tb01199.x","usgsCitation":"1973, The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda: Lethaia, v. 6, no. 3, p. 275-309, https://doi.org/10.1111/j.1502-3931.1973.tb01199.x.","productDescription":"35 p.","startPage":"275","endPage":"309","costCenters":[],"links":[{"id":415006,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"compilers":[{"text":"Yochelson, Ellis L.","contributorId":90802,"corporation":false,"usgs":true,"family":"Yochelson","given":"Ellis","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":868307,"contributorType":{"id":3,"text":"Compilers"},"rank":1},{"text":"Flower, Rousseau H.","contributorId":303830,"corporation":false,"usgs":false,"family":"Flower","given":"Rousseau","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":868308,"contributorType":{"id":3,"text":"Compilers"},"rank":2},{"text":"Webers, Gerald F.","contributorId":87435,"corporation":false,"usgs":true,"family":"Webers","given":"Gerald","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":868309,"contributorType":{"id":3,"text":"Compilers"},"rank":3}]}} ,{"id":70241913,"text":"70241913 - 1973 - The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda","interactions":[],"lastModifiedDate":"2023-03-30T16:26:16.966133","indexId":"70241913","displayToPublicDate":"1973-07-01T10:41:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2614,"text":"Lethaia","active":true,"publicationSubtype":{"id":10}},"displayTitle":"The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda","title":"The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda","docAbstract":"

Knightoconus, a new genus of the Hypseloconidae (Mollusca: Monoplacophora) from rocks of early Franconian age in Antarctica, is multiseptate. The multiple septa are a criticàl feature to be expected in a form ancestral to cephalopods. Fossil cephalopods, however, invariably have a siphuncle as well as septa; some gastropods, some hyolithids, and some monoplacophorans also have septa but lack a siphuncle. Therefore, only the siphuncle can be considered a unique and particularly significant feature of the cephalopod shell. Hypothetical reconstructions of molluscan anatomy support the notion that cephalopods may have been derived directly from a hypseloconid having a high, slightly curved, multiseptate, bilaterally symmetrical shell, by the subsequent development of a siphuncle.

","language":"English","publisher":"Geological Society of America","doi":"10.1111/j.1502-3931.1973.tb01199.x","usgsCitation":"Yochelson, E.L., Flower, R.H., and Webers, G.F., 1973, The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda: Lethaia, v. 6, no. 3, p. 275-309, https://doi.org/10.1111/j.1502-3931.1973.tb01199.x.","productDescription":"35 p.","startPage":"275","endPage":"309","costCenters":[],"links":[{"id":414978,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Yochelson, Ellis L.","contributorId":90802,"corporation":false,"usgs":true,"family":"Yochelson","given":"Ellis","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":868210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Flower, Rousseau H.","contributorId":303830,"corporation":false,"usgs":false,"family":"Flower","given":"Rousseau","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":868211,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Webers, Gerald F.","contributorId":87435,"corporation":false,"usgs":true,"family":"Webers","given":"Gerald","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":868212,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70181759,"text":"70181759 - 1973 - Ground water and geology of Baraga County, Michigan","interactions":[],"lastModifiedDate":"2017-02-13T13:44:57","indexId":"70181759","displayToPublicDate":"1973-06-13T00:00:00","publicationYear":"1973","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":142,"text":"Water Investigation","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"11","title":"Ground water and geology of Baraga County, Michigan","docAbstract":"

Most wells In Baraga County obtain water from beds of sand and gravel in morainal and lakebed deposits or from the Jacobsville Sandstone. Yields of wells range from a few to as much as 115 gallons per minute, but most wells probably yield less than 10 gpm. Large areas, where igneous and metamorphic rocks crop out or are covered only by thin drift, are unfavorable for obtaining enough ground water for even a domestic supply. Quality of water from most wells is satisfactory, although most water supplies are hard and some are high in iron content. Some of the deeper wells in the Jacobsville Sandstone may yield salty water. Most large public water supplies are obtained from Lake Superior, but some smaller supplies are obtained from wells and springs.

","language":"English","publisher":"Michigan Geological Survey","publisherLocation":"Lansing, MI","usgsCitation":"Doonan, C.J., and Byerlay, J., 1973, Ground water and geology of Baraga County, Michigan: Water Investigation 11, 10 p.","productDescription":"10 p.","costCenters":[{"id":382,"text":"Michigan Water Science Center","active":true,"usgs":true}],"links":[{"id":335240,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":335239,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.michigan.gov/documents/deq/GIMDL-WI11_216293_7.PDF","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Michigan","county":"Baraga County","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-88.4511,46.9393],[-88.4559,46.9236],[-88.4628,46.9089],[-88.4666,46.9029],[-88.4754,46.8862],[-88.4786,46.8614],[-88.4771,46.855],[-88.4777,46.8522],[-88.4831,46.8328],[-88.4809,46.8251],[-88.4747,46.8201],[-88.4689,46.8018],[-88.4638,46.7877],[-88.4644,46.7849],[-88.4657,46.7849],[-88.4683,46.7817],[-88.4796,46.7843],[-88.4816,46.7829],[-88.4841,46.7778],[-88.4905,46.7708],[-88.4943,46.7662],[-88.4962,46.7638],[-88.4954,46.7588],[-88.4887,46.7552],[-88.488,46.7548],[-88.4787,46.7526],[-88.4714,46.7532],[-88.4577,46.7589],[-88.4532,46.7654],[-88.4495,46.7751],[-88.4355,46.7941],[-88.4271,46.802],[-88.4194,46.8094],[-88.4019,46.823],[-88.3948,46.8309],[-88.387,46.836],[-88.3838,46.8402],[-88.3846,46.8434],[-88.3887,46.8484],[-88.3961,46.8515],[-88.404,46.8491],[-88.4041,46.8519],[-88.4041,46.8532],[-88.4035,46.8555],[-88.3983,46.8588],[-88.3957,46.8607],[-88.3912,46.8658],[-88.3774,46.8729],[-88.3741,46.8729],[-88.3734,46.8711],[-88.3772,46.8646],[-88.3758,46.8614],[-88.3704,46.8592],[-88.3564,46.8562],[-88.3512,46.859],[-88.3421,46.8669],[-88.333,46.8735],[-88.3004,46.8959],[-88.2972,46.8983],[-88.269,46.9115],[-88.2566,46.9217],[-88.2501,46.9264],[-88.2436,46.9306],[-88.2252,46.9378],[-88.2087,46.9421],[-88.1994,46.945],[-88.193,46.9515],[-88.1851,46.9552],[-88.1725,46.9577],[-88.1679,46.9591],[-88.1594,46.9634],[-88.1574,46.9643],[-88.1501,46.9658],[-88.1435,46.9672],[-88.1361,46.9641],[-88.1308,46.9637],[-88.1308,46.9623],[-88.1433,46.9571],[-88.1452,46.953],[-88.1529,46.9428],[-88.1607,46.9376],[-88.1633,46.9358],[-88.1724,46.9288],[-88.179,46.9241],[-88.2059,46.9109],[-88.2262,46.9019],[-88.2314,46.8982],[-88.2379,46.8908],[-88.2443,46.8829],[-88.2488,46.8773],[-88.2525,46.8681],[-88.2578,46.8653],[-88.2603,46.8602],[-88.2634,46.8528],[-88.2647,46.8501],[-88.2717,46.8399],[-88.2782,46.8361],[-88.2828,46.8324],[-88.2867,46.8305],[-88.2924,46.8217],[-88.293,46.8189],[-88.2825,46.8241],[-88.276,46.8279],[-88.2682,46.8316],[-88.2585,46.841],[-88.2519,46.8429],[-88.2488,46.853],[-88.2463,46.859],[-88.2367,46.8706],[-88.2203,46.8804],[-88.2125,46.8856],[-88.214,46.8929],[-88.2108,46.8957],[-88.2055,46.8967],[-88.1995,46.8954],[-88.1982,46.8963],[-88.1983,46.9],[-88.1871,46.9047],[-88.1739,46.9072],[-88.1719,46.9067],[-88.1599,46.9069],[-88.1473,46.908],[-88.1394,46.9081],[-88.1156,46.9138],[-88.0985,46.9182],[-88.0905,46.9196],[-88.0766,46.9207],[-88.0633,46.9186],[-88.0586,46.9163],[-88.0459,46.9123],[-88.0464,46.7655],[-87.9921,46.7652],[-87.9919,46.7299],[-87.9918,46.7225],[-87.9921,46.6785],[-88.045,46.6788],[-88.0563,46.6791],[-88.1185,46.6793],[-88.1182,46.5042],[-88.1174,46.4194],[-88.2427,46.4197],[-88.3672,46.4194],[-88.6164,46.419],[-88.6816,46.4189],[-88.6799,46.5473],[-88.6797,46.5624],[-88.6794,46.5909],[-88.6796,46.6367],[-88.6797,46.6395],[-88.6798,46.7643],[-88.682,46.8505],[-88.5527,46.8529],[-88.5521,46.9388],[-88.4511,46.9393]]]},\"properties\":{\"name\":\"Baraga\",\"state\":\"MI\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58a2d3c4e4b0c82512869a48","contributors":{"authors":[{"text":"Doonan, C. J.","contributorId":62592,"corporation":false,"usgs":true,"family":"Doonan","given":"C.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":668424,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Byerlay, J.R.","contributorId":181508,"corporation":false,"usgs":false,"family":"Byerlay","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":668425,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241802,"text":"70241802 - 1973 - Interpretation of a high-grade Precambrian terrane in northern Idaho","interactions":[],"lastModifiedDate":"2023-03-28T00:07:28.596857","indexId":"70241802","displayToPublicDate":"1973-06-01T18:54:56","publicationYear":"1973","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":"Interpretation of a high-grade Precambrian terrane in northern Idaho","docAbstract":"

A terrane of high-grade metamorphic rocks in northern Idaho and northeastern Washington is almost completely surrounded by low-grade rocks of the Precambrian Belt Supergroup. The high-grade terrane includes both Belt and pre-Belt rocks. Four events of folding and metamorphism occurred in the high-grade terrane. The first three events may have been associated with the Late Cretaceous emplacement of quartz monzonite of the Kaniksu batholith; the fourth may have been associated with a slightly later emplacement of granodiorite or with a Tertiary plutonic and volcanic episode. A much older event of plutonism in the high-grade terrane is recorded by zircon, which was dated by the Pb-U method at 1,500 m.y. from pre-Belt meta-igneous augen gneiss. Evidence of regional events intermediate in age between 1,500 and 100 m.y. has been found in the surrounding low-grade rocks but not in the high-grade terrane.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<1999:IOAHPT>2.0.CO;2","usgsCitation":"Clark, S.H., 1973, Interpretation of a high-grade Precambrian terrane in northern Idaho: Geological Society of America Bulletin, v. 84, no. 6, p. 1999-2004, https://doi.org/10.1130/0016-7606(1973)84<1999:IOAHPT>2.0.CO;2.","productDescription":"5 p.","startPage":"1999","endPage":"2004","costCenters":[],"links":[{"id":414789,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Idaho","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -116.94372590174491,\n 48.12592715629725\n ],\n [\n -116.94372590174491,\n 47.78941664863268\n ],\n [\n -116.61313550002667,\n 47.78941664863268\n ],\n [\n -116.61313550002667,\n 48.12592715629725\n ],\n [\n -116.94372590174491,\n 48.12592715629725\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Clark, Sandra H. B.","contributorId":88706,"corporation":false,"usgs":true,"family":"Clark","given":"Sandra","email":"","middleInitial":"H. B.","affiliations":[],"preferred":false,"id":867766,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70241489,"text":"70241489 - 1973 - Radiometric ages of intrusive rocks in the Little Belt Mountains, Montana","interactions":[],"lastModifiedDate":"2023-03-21T20:09:54.258044","indexId":"70241489","displayToPublicDate":"1973-06-01T14:54:19","publicationYear":"1973","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":"Radiometric ages of intrusive rocks in the Little Belt Mountains, Montana","docAbstract":"

Radiometric ages indicate that most, if not all, of the major intrusions in the Little Belt Mountains, central Montana, were emplaced during the Eocene epoch, between 48 and 54 m.y. ago. In the Hughesville area, igneous activity continued, or was episodic until 42 m.y. ago. As a result of the continued igneous activity, radiometric ages in the Hughesville area can be interpreted either as primary ages or as reset ages.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<1977:RAOIRI>2.0.CO;2","usgsCitation":"Marvin, R.F., Witkind, I.J., Keefer, W.R., and Mehnert, H.H., 1973, Radiometric ages of intrusive rocks in the Little Belt Mountains, Montana: Geological Society of America Bulletin, v. 84, no. 6, p. 1977-1986, https://doi.org/10.1130/0016-7606(1973)84<1977:RAOIRI>2.0.CO;2.","productDescription":"10 p.","startPage":"1977","endPage":"1986","costCenters":[],"links":[{"id":414496,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Montana","otherGeospatial":"Little Belt Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -111.5202177181311,\n 47.10708490893205\n ],\n [\n -111.56981228036793,\n 47.00373245389477\n ],\n [\n -111.35684739546896,\n 46.86029831054955\n ],\n [\n -111.19055974561621,\n 46.73847707820448\n ],\n [\n -110.7558779942468,\n 46.620387551339405\n ],\n [\n -110.70336610481935,\n 46.656442223855464\n ],\n [\n -110.65960619696338,\n 46.67045699746558\n ],\n [\n -110.48748389272978,\n 46.52211699528658\n ],\n [\n -109.7523174407491,\n 46.69247287287391\n ],\n [\n -109.97695163441014,\n 46.83036784208787\n ],\n [\n -110.18991651930912,\n 46.884230678767494\n ],\n [\n -110.1257353211203,\n 46.94003137062384\n ],\n [\n -110.33578287882902,\n 47.11701208919527\n ],\n [\n -110.68877946886737,\n 47.235993833476755\n ],\n [\n -110.95717357038404,\n 47.28944864792402\n ],\n [\n -111.37435135861121,\n 47.23005107778653\n ],\n [\n -111.5202177181311,\n 47.10708490893205\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Marvin, Richard F.","contributorId":23125,"corporation":false,"usgs":true,"family":"Marvin","given":"Richard","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":867005,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Witkind, Irving J.","contributorId":14469,"corporation":false,"usgs":true,"family":"Witkind","given":"Irving","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":867006,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Keefer, William R.","contributorId":74083,"corporation":false,"usgs":true,"family":"Keefer","given":"William","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":867007,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mehnert, Harald H.","contributorId":56221,"corporation":false,"usgs":true,"family":"Mehnert","given":"Harald","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":867008,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70241585,"text":"70241585 - 1973 - Origin of andesitic and granitic magmas in the northern Sierra Nevada, California","interactions":[],"lastModifiedDate":"2023-03-23T19:15:37.911621","indexId":"70241585","displayToPublicDate":"1973-06-01T14:09:26","publicationYear":"1973","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":"Origin of andesitic and granitic magmas in the northern Sierra Nevada, California","docAbstract":"

The early magmas of the northern Sierra Nevada, calc-alkaline andesite of island-arc type and its derivatives, all low in potassium, were generated during the Devonian(?) period, possibly along an eastward-dipping sub-duction zone. These magmas could have been derived from mantle peridotite of the continental plate by introduction of water from the descending oceanic plate. Later, during the Permian(?) period, the magmas became basaltic, with potassium-rich silicic derivatives indicating anhydrous conditions and a deeper level of magma generation. Plutonism began in Jurassic time, at the end of a period of intense deformation and metamorphism. The earliest intrusive rocks are gabbro and diorite. At the end of the Jurassic period, large granitic plutons were emplaced. These grade from hornblende quartz diorite at the borders to monzotonalite at the centers. Trondhjemite occurs as the latest product of crystallization differentiation of plutonic magmas. Exchange of elements between plutonic and metamorphic rocks suggests that the plutonic magmas were composite. The partial melts of the downfolded volcanic and sedimentary rocks were modified by partial melts from the mantle and the subducted oceanic lithosphere below. Relative amounts of material contributed by each of the three sources of plutonic magma changed with time, and these changes, along with differentiation processes, were responsible for the diversity in composition of magmas.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<2111:OOAAGM>2.0.CO;2","usgsCitation":"Hietanen, A., 1973, Origin of andesitic and granitic magmas in the northern Sierra Nevada, California: Geological Society of America Bulletin, v. 84, no. 6, p. 2111-2118, https://doi.org/10.1130/0016-7606(1973)84<2111:OOAAGM>2.0.CO;2.","productDescription":"8 p.","startPage":"2111","endPage":"2118","costCenters":[],"links":[{"id":414647,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sierra Nevada","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -121.34922812220827,\n 39.01246631701153\n ],\n [\n -121.01117322043225,\n 38.666546657135\n ],\n [\n -120.03677968001867,\n 38.816479466197535\n ],\n [\n -119.99700851510377,\n 39.00216471562018\n ],\n [\n -120.0235226250469,\n 39.84190368534905\n ],\n [\n -120.12295053733394,\n 40.12632294197442\n ],\n [\n -120.22900697710688,\n 40.37926736512091\n ],\n [\n -120.40797721922371,\n 40.65641341470604\n ],\n [\n -120.76591770345738,\n 40.90736947457003\n ],\n [\n -121.44202750700943,\n 41.08747041294211\n ],\n [\n -121.99219528833132,\n 40.7870289012165\n ],\n [\n -122.08499467313288,\n 40.1921794318817\n ],\n [\n -121.56134100175413,\n 39.54607952185563\n ],\n [\n -121.34922812220827,\n 39.01246631701153\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hietanen, Anna","contributorId":43841,"corporation":false,"usgs":true,"family":"Hietanen","given":"Anna","affiliations":[],"preferred":false,"id":867389,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70241831,"text":"70241831 - 1973 - Petrogenesis of the Superstition-Superior volcanic area as inferred from strontium- and oxygen-isotope studies","interactions":[],"lastModifiedDate":"2023-03-28T17:27:34.017506","indexId":"70241831","displayToPublicDate":"1973-06-01T12:19:30","publicationYear":"1973","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":"Petrogenesis of the Superstition-Superior volcanic area as inferred from strontium- and oxygen-isotope studies","docAbstract":"

Apparent initial Sr87/Sr86 ratios of five ash-flow tuffs (0.7063 to 0.7139) and several mafic to silicic lavas (0.7055 to 0.7131) indicate that the magmas were derived below the base of the Precambrian granitic crust (0.7231 to 1.0906). Liquidus compositions in the system Q-Or-Ab-H2O and oxygen-isotope geother-mometry suggest that the silicic magmas started to crystallize quartz, magnetite, and two feldspars in a water-undersaturated environment of high pressure (∼10 kb) and moderate temperature of at least 830°C.

During or after ascent into the crust, the magmas underwent varying degrees of crystal-melt re-equilibration. Measured plagioclase-biotite O18 fractionations (0.5 to 0.7) imply a temperature that is too high for the observed mineral assemblage, and the inference is that the two minerals did not crystallize in equilibrium. Prior to eruption, the upper part of the magma column assimilated crustal Sr such that the base of each ash flow is now enriched in Sr87. In some cases, this assimilation was too rapid to allow crystal-melt equilibration of Sr isotopes. δO18 values for the magmas are within the range typical of similar magma types, indicating that no significant interaction took place between the melts and meteoric water; however, some rocks have exchanged oxygen isotopes with meteoric water at low temperatures after eruption.

Some of the magma appears to have had a long residence in the crust at lower pressure (1 kb) and temperature (750°C), because two of the ash-flow tuffs and one lava are greatly enriched in Sr87 and have largely re-equilibrated under the P-T conditions of a shallow magma chamber. Even these, however, have retained evidence for a multistage genesis.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<1987:POTSVA>2.0.CO;2","usgsCitation":"Stuckless, J.S., and O’Neil, J.R., 1973, Petrogenesis of the Superstition-Superior volcanic area as inferred from strontium- and oxygen-isotope studies: Geological Society of America Bulletin, v. 84, no. 6, p. 1987-1997, https://doi.org/10.1130/0016-7606(1973)84<1987:POTSVA>2.0.CO;2.","productDescription":"11 p.","startPage":"1987","endPage":"1997","costCenters":[],"links":[{"id":414836,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"84","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Stuckless, John S. 0000-0002-7536-0444 jstuckless@usgs.gov","orcid":"https://orcid.org/0000-0002-7536-0444","contributorId":4974,"corporation":false,"usgs":true,"family":"Stuckless","given":"John","email":"jstuckless@usgs.gov","middleInitial":"S.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":867863,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Neil, James R.","contributorId":70762,"corporation":false,"usgs":true,"family":"O’Neil","given":"James","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":867864,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":5221234,"text":"5221234 - 1973 - Organochlorine pesticides and polychlorinated biphenyls in black duck eggs from the United States and Canada--1971","interactions":[],"lastModifiedDate":"2022-11-17T16:35:46.454049","indexId":"5221234","displayToPublicDate":"1973-06-01T12:17:55","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3038,"text":"Pesticides Monitoring Journal","onlineIssn":" 0031-615","printIssn":" 0031-615","active":true,"publicationSubtype":{"id":10}},"title":"Organochlorine pesticides and polychlorinated biphenyls in black duck eggs from the United States and Canada--1971","docAbstract":"

Black duck (Anas rubripes) eggs were collected in 1971 from the Northeastern United States and Canada. All 61 eggs analyzed contained DDE residues; the mean DDE residues for States and Provinces ranged from 0.09 to 5.94 ppm on a wet-weight basis, with.mean concentrations exceeding 1.0 ppm in eggs from Maine, New York, New Jersey, and Delaware. The highest DDE concentration, 14.0 ppm, was in an egg from Delaware. DDD and DDT residues averaged <0.5 ppm for each collection area. No mirex residues and only trace amounts of dieldrin and heptachlor epoxide were detected. Of the 61 eggs, 57 contained PCB's: mean PCB residues ranged from <0.05 ppm in samples from Nova Scotia to 3.30 ppm in those from Massachusetts. with trace amounts occurring in nearly half the samples. Mean organochlorine pesticide residues appeared to be lower in the 1971 samples than in those analyzed in an earlier study in 1964. The shells from the 61 eggs were measured for thickness. Comparisons of the shell thickness of eggs collected in 1971, 1964, and prior to 1940 showed that the average thickness of shells from eggs collected in 1964 (0.32/ mm) was significantly less (P<0.01) than that of .shells of eggs collected prior to 1940 (0.348 mm) or in 1971 (0.343 mm).

","language":"English","publisher":"U.S. Environmental Protection Agency","usgsCitation":"Longcore, J.R., and Mulhern, B., 1973, Organochlorine pesticides and polychlorinated biphenyls in black duck eggs from the United States and Canada--1971: Pesticides Monitoring Journal, v. 7, no. 1, p. 62-66.","productDescription":"5 p.","startPage":"62","endPage":"66","numberOfPages":"5","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":197280,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae5e4b07f02db68a81e","contributors":{"authors":[{"text":"Longcore, J. R. 0000-0003-4898-5438","orcid":"https://orcid.org/0000-0003-4898-5438","contributorId":43835,"corporation":false,"usgs":true,"family":"Longcore","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":333354,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mulhern, B.M.","contributorId":98683,"corporation":false,"usgs":true,"family":"Mulhern","given":"B.M.","email":"","affiliations":[],"preferred":false,"id":333355,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70236457,"text":"70236457 - 1973 - Mapping of the 1973 Mississippi River floods from the Earth Resources Technology Satellite (ERTS)","interactions":[],"lastModifiedDate":"2022-09-07T14:02:16.358177","indexId":"70236457","displayToPublicDate":"1973-06-01T08:51:03","publicationYear":"1973","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Mapping of the 1973 Mississippi River floods from the Earth Resources Technology Satellite (ERTS)","docAbstract":"

On March 31, and May 4 and 5, 1973, the first Earth Resources Technology Satellite (ERTS-1) obtained multispectral scanner imagery over the Mississippi River below St. Louis, Missouri. The river was in flood, and the ERTS data provided the first opportunity for regional synoptic mapping of the extent of flooding at the time the imagery was obtained along a 1200 river-mile reach and some of its tributaries. The flood data were compared with imagery collected by ERTS on October 1 and 2, 1972, when the rivers were confined to their normal channels. The specially processed data were analyzed by additive-color techniques, and special enhancements were prepared to aid in interpretation of the data. The extent of flooding was delineated by additive-color, temporal composites of MSS band 7 infrared images. The temporal composites vividly depict, on a single scene, the flooded areas in relation to the normal channel. Color composites of the two near-infrared bands, which usually accentuate surface water, were enlarged to a scale of 1:250,000. Excellent registration was obtained between the image and transparencies of the 1:250,000 topographic maps used as overlays. The resulting image maps were then used as an interim product for preparation of maps showing the extent of flooding at the same scale.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Remote sensing and water resources management","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"American Water Resources Association","usgsCitation":"Deutsch, M., Ruggles, F.H., Guss, P., and Yost, E., 1973, Mapping of the 1973 Mississippi River floods from the Earth Resources Technology Satellite (ERTS), in Remote sensing and water resources management, p. 39-55.","productDescription":"17 p.","startPage":"39","endPage":"55","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":406303,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arkansas, Illinois, Kentucky, Missouri, Tennessee","otherGeospatial":"Mississippi River-Ohio River confluence","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -90.06591796875,\n 35.33529320309328\n ],\n [\n -88.65966796875,\n 35.33529320309328\n ],\n [\n -88.65966796875,\n 37.75334401310656\n ],\n [\n -90.06591796875,\n 37.75334401310656\n ],\n [\n -90.06591796875,\n 35.33529320309328\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Deutsch, Morris","contributorId":69119,"corporation":false,"usgs":true,"family":"Deutsch","given":"Morris","email":"","affiliations":[],"preferred":false,"id":851082,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ruggles, F. H.","contributorId":105805,"corporation":false,"usgs":true,"family":"Ruggles","given":"F.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":851083,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Guss, Philip","contributorId":296268,"corporation":false,"usgs":false,"family":"Guss","given":"Philip","email":"","affiliations":[],"preferred":false,"id":851084,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yost, Edward","contributorId":296269,"corporation":false,"usgs":false,"family":"Yost","given":"Edward","email":"","affiliations":[],"preferred":false,"id":851085,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70207302,"text":"70207302 - 1973 - Referees and the publications crisis","interactions":[],"lastModifiedDate":"2019-12-16T12:41:49","indexId":"70207302","displayToPublicDate":"1973-05-31T12:39:44","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3879,"text":"Eos, Earth and Space Science News","active":true,"publicationSubtype":{"id":10}},"title":"Referees and the publications crisis","docAbstract":"

Routine refereeing by peers of manuscripts submitted to scholarly journals is a logical and effective device that can obviate ‘crankiness, irrelevance and gross incompetence’ [Ziman, 1970a] on the one hand and minimize editorial arbitrariness on the other. As reviewed by Zuckerman and Merton [1971], the device has historical roots that extend back to the beginning of the first scholarly journals, such as Transactions of the Royal Society, and Journal des Scavans. The growth of science since World War II and the pressure of burgeoning manuscript submission appear to have been important factors in making automatic peer review nearly universal in American and British Commonwealth natural science journals and in international journals influenced by Anglo‐North Americans. A 1962 survey cited by Zuckerman and Merton [1971] found that 71% of 156 physical and biological science journals in 13 countries made use of referees.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO054i005p00532","usgsCitation":"Manheim, F.T., 1973, Referees and the publications crisis: Eos, Earth and Space Science News, v. 54, no. 5, p. 532-537, https://doi.org/10.1029/EO054i005p00532.","productDescription":"6 p.","startPage":"532","endPage":"537","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":370313,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"54","issue":"5","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","contributors":{"authors":[{"text":"Manheim, Frank T. 0000-0003-4005-4524","orcid":"https://orcid.org/0000-0003-4005-4524","contributorId":20770,"corporation":false,"usgs":true,"family":"Manheim","given":"Frank","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":777632,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011078,"text":"70011078 - 1973 - Fordilla troyensis Barrande: The oldest known pelecypod","interactions":[],"lastModifiedDate":"2026-01-26T14:29:10.492288","indexId":"70011078","displayToPublicDate":"1973-05-25T00:00:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Fordilla troyensis Barrande: The oldest known pelecypod","title":"Fordilla troyensis Barrande: The oldest known pelecypod","docAbstract":"

Specimens of the small bivalved animal Fordilla troyensis Barrande from New York State show that this fossil is the oldest known pelecypod mollusk and not a conchostracan arthropod. This finding extends the range of the class Pelecypoda backward in time from the Early Ordovician (about 495 million years ago) to the Early Cambrian (about 540 to 570 million years ago). The morphology of Fordilla troyensis suggests that it lived infaunally and that it was ancestral to the pelecypod subclasses Heteroconchia and Isofilibranchia.

","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.180.4088.866","issn":"00368075","usgsCitation":"Pojeta, J., Runnegar, B., and Kriz, J., 1973, Fordilla troyensis Barrande: The oldest known pelecypod: Science, v. 180, no. 4088, p. 866-868, https://doi.org/10.1126/science.180.4088.866.","productDescription":"3 p.","startPage":"866","endPage":"868","costCenters":[],"links":[{"id":221152,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New 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