{"pageNumber":"5863","pageRowStart":"146550","pageSize":"25","recordCount":165658,"records":[{"id":70226795,"text":"70226795 - 1968 - Lunar theory and processes","interactions":[],"lastModifiedDate":"2021-12-13T20:15:47.099386","indexId":"70226795","displayToPublicDate":"1968-06-15T13:58:10","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Lunar theory and processes","docAbstract":"<div class=\"article-section__content en main\"><p>Despite the fact that the Surveyor 3 landed in a crater, the general appearance of the terrain is remarkably similar to that revealed by Surveyor 1. Evidence of the transport of material down the crater wall was observed. Some picture degradation occurred, apparently as a result of fine particulate lunar surface material being deposited on the TV system mirror during the unusual landing.</p></div>","language":"English","publisher":"Wiley-Blackwell","doi":"10.1029/JB073i012p04115","usgsCitation":"Gault, D.E., Collins, R.J., Gold, T., Green, J., Kuiper, G.P., Masursky, H., O'Keefe, J., Phinney, R., and Shoemaker, E.M., 1968, Lunar theory and processes: Journal of Geophysical Research, v. 73, no. 12, p. 4115-4131, https://doi.org/10.1029/JB073i012p04115.","productDescription":"17 p.","startPage":"4115","endPage":"4131","costCenters":[],"links":[{"id":392813,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Moon","volume":"73","issue":"12","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","contributors":{"authors":[{"text":"Gault, D. E.","contributorId":38580,"corporation":false,"usgs":true,"family":"Gault","given":"D.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":828294,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collins, R. J.","contributorId":77655,"corporation":false,"usgs":true,"family":"Collins","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":828295,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gold, T.","contributorId":270013,"corporation":false,"usgs":false,"family":"Gold","given":"T.","email":"","affiliations":[{"id":12722,"text":"Cornell University","active":true,"usgs":false}],"preferred":false,"id":828296,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Green, J.","contributorId":26439,"corporation":false,"usgs":true,"family":"Green","given":"J.","affiliations":[],"preferred":false,"id":828297,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kuiper, G. P.","contributorId":9394,"corporation":false,"usgs":true,"family":"Kuiper","given":"G.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":828298,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Masursky, H.","contributorId":33823,"corporation":false,"usgs":true,"family":"Masursky","given":"H.","affiliations":[],"preferred":false,"id":828299,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"O'Keefe, J.","contributorId":65698,"corporation":false,"usgs":true,"family":"O'Keefe","given":"J.","affiliations":[],"preferred":false,"id":828300,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Phinney, R.","contributorId":52735,"corporation":false,"usgs":true,"family":"Phinney","given":"R.","affiliations":[],"preferred":false,"id":828301,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Shoemaker, Eugene Merle","contributorId":20342,"corporation":false,"usgs":true,"family":"Shoemaker","given":"Eugene","email":"","middleInitial":"Merle","affiliations":[],"preferred":false,"id":828302,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70011484,"text":"70011484 - 1968 - European Cretaceous flints on the coast of North America","interactions":[],"lastModifiedDate":"2026-02-05T21:25:23.546509","indexId":"70011484","displayToPublicDate":"1968-06-14T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"European Cretaceous flints on the coast of North America","docAbstract":"Flint pebbles and nodules from the Upper Cretaceous chalks of Europe occur offshore and at many seaports along the Atlantic coast of North America, where they were brought as ship's ballast. Isolated pieces imported from Europe as gunflints also are present.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.160.3833.1225","issn":"00368075","usgsCitation":"Emery, K., Kaye, C.A., Loring, D., and Nota, D., 1968, European Cretaceous flints on the coast of North America: Science, v. 160, no. 3833, p. 1225-1228, https://doi.org/10.1126/science.160.3833.1225.","productDescription":"4 p.","startPage":"1225","endPage":"1228","costCenters":[],"links":[{"id":220906,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Atlantic coast of North America","volume":"160","issue":"3833","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0bcfe4b0c8380cd528b4","contributors":{"authors":[{"text":"Emery, K.O.","contributorId":67865,"corporation":false,"usgs":true,"family":"Emery","given":"K.O.","email":"","affiliations":[],"preferred":false,"id":361222,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaye, C. A.","contributorId":6003,"corporation":false,"usgs":true,"family":"Kaye","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":361221,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Loring, D.H.","contributorId":90036,"corporation":false,"usgs":true,"family":"Loring","given":"D.H.","email":"","affiliations":[],"preferred":false,"id":361223,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nota, D.J.G.","contributorId":93628,"corporation":false,"usgs":true,"family":"Nota","given":"D.J.G.","email":"","affiliations":[],"preferred":false,"id":361224,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70210486,"text":"70210486 - 1968 - Argon-40: Excess in submarine pillow basalts from Kilauea Volcano, Hawaii","interactions":[],"lastModifiedDate":"2020-06-05T12:32:33.000686","indexId":"70210486","displayToPublicDate":"1968-06-04T13:40:27","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Argon-40: Excess in submarine pillow basalts from Kilauea Volcano, Hawaii","docAbstract":"<p><span>Submarine pillow basalts from Kilauea Volcano contain excess radiogenic argon-40 and give anomalously high potassium-argon ages. Glassy rims of pillows show a systematic increase in radiogenic argon-40 with depth, and a pillow from a depth of 2590 meters shows a decrease in radiogenic argon-40 inward from the pillow rim. The data indicate that the amount of excess radiogenic argon-40 is a direct function of both hydrostatic pressure and rate of cooling, and that many submarine basalts are not suitable for potassium-argon dating.</span></p>","language":"English","publisher":"AAAS","doi":"10.1126/science.161.3846.1132","usgsCitation":"Dalrymple, G.B., and Moore, J.G., 1968, Argon-40: Excess in submarine pillow basalts from Kilauea Volcano, Hawaii: Science, v. 161, no. 3846, p. 1132-1135, https://doi.org/10.1126/science.161.3846.1132.","productDescription":"4 p.","startPage":"1132","endPage":"1135","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":375368,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","otherGeospatial":"Kilauea Volcano","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -155.30616760253906,\n              19.38370463414803\n            ],\n            [\n              -155.22445678710938,\n              19.38370463414803\n            ],\n            [\n              -155.22445678710938,\n              19.452348936859018\n            ],\n            [\n              -155.30616760253906,\n              19.452348936859018\n            ],\n            [\n              -155.30616760253906,\n              19.38370463414803\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"161","issue":"3846","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Dalrymple, G. Brent","contributorId":55146,"corporation":false,"usgs":true,"family":"Dalrymple","given":"G.","email":"","middleInitial":"Brent","affiliations":[],"preferred":false,"id":790350,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moore, James G. 0000-0002-7543-2401 jmoore@usgs.gov","orcid":"https://orcid.org/0000-0002-7543-2401","contributorId":2892,"corporation":false,"usgs":true,"family":"Moore","given":"James","email":"jmoore@usgs.gov","middleInitial":"G.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":790351,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70209024,"text":"70209024 - 1968 - Hypogene veins of gibbsite, pyrolusite, and lithiophorite in Nye County, Nevada","interactions":[],"lastModifiedDate":"2020-03-11T18:04:54","indexId":"70209024","displayToPublicDate":"1968-06-01T18:01:38","publicationYear":"1968","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":"Hypogene veins of gibbsite, pyrolusite, and lithiophorite in Nye County, Nevada","docAbstract":"<p><span>Gibbsite, lithiophorite, pyrolusite, and goethite, plus discrete mixtures of gibbsite and lithiophorite and of gibbsite and iron oxide, occur as replacement veins in limestone. Minor accessories are barite, alunite, opal. Minerals of wall-rock alteration are garnet, idocrase, K-feldspar, prehnite, sericite, and quartz. These silicates formed at higher temperature than the vein minerals, but the whole sequence is considered to be a product of the same solutions, of deep-seated origin, deposited over a long period of time.</span></p>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.63.4.360","usgsCitation":"Hewett, D.F., Cornwall, H.R., and Erd, R.C., 1968, Hypogene veins of gibbsite, pyrolusite, and lithiophorite in Nye County, Nevada: Economic Geology, v. 63, no. 4, p. 360-371, https://doi.org/10.2113/gsecongeo.63.4.360.","productDescription":"12 p.","startPage":"360","endPage":"371","costCenters":[],"links":[{"id":373145,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","county":"Nye County","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-115.9082,39.1615],[-115.5191,38.9578],[-115.4725,38.9325],[-115.4433,38.9162],[-115.3694,38.8769],[-115.363,38.874],[-115.242,38.8093],[-115.0969,38.7309],[-115.0777,38.721],[-115.0604,38.7107],[-115.0291,38.6937],[-114.999,38.6777],[-114.9996,38.592],[-114.9997,38.4315],[-114.9994,38.3894],[-115.0004,38.0507],[-115.1185,38.0508],[-115.1436,38.0508],[-115.326,38.0515],[-115.3453,38.0514],[-115.4003,38.051],[-115.4587,38.0506],[-115.6394,38.0512],[-115.6581,38.051],[-115.8404,38.0504],[-115.8931,38.0507],[-115.8938,37.723],[-115.8969,37.5498],[-115.8975,37.2796],[-115.8982,37.1926],[-115.8942,36.8425],[-115.8941,36.686],[-115.8945,36.6702],[-115.8949,36.598],[-115.8949,36.5962],[-115.8946,36.5858],[-115.8947,36.5005],[-115.8945,36.4806],[-115.8949,36.462],[-115.8944,36.457],[-115.8948,36.3087],[-115.8945,36.2923],[-115.8943,36.1957],[-115.8945,36.1608],[-115.8948,36.1163],[-115.8948,36.0927],[-115.895,36.0015],[-115.9178,36.0192],[-115.9518,36.0457],[-115.9925,36.0773],[-116.049,36.1211],[-116.0624,36.1314],[-116.1039,36.1636],[-116.1287,36.1829],[-116.1702,36.2152],[-116.173,36.2174],[-116.2311,36.2626],[-116.2834,36.3028],[-116.2954,36.3122],[-116.3752,36.373],[-116.5107,36.4764],[-116.5247,36.4871],[-116.5589,36.5131],[-116.574,36.5245],[-116.5946,36.54],[-116.6556,36.5867],[-116.6583,36.5888],[-116.6764,36.6024],[-116.706,36.6248],[-116.7895,36.6877],[-116.8424,36.7276],[-116.8453,36.7298],[-116.8806,36.7568],[-116.8912,36.7648],[-116.9237,36.7891],[-116.9641,36.8193],[-116.9783,36.8299],[-116.981,36.8319],[-117.0046,36.8495],[-117.164,36.9688],[-117.1639,36.9698],[-117.1637,37.0182],[-117.164,37.0894],[-117.1642,37.171],[-117.1641,37.1909],[-117.1641,37.1936],[-117.1665,37.6995],[-117.1664,37.714],[-117.1663,37.7285],[-117.1663,37.7435],[-117.1662,37.7585],[-117.1657,38.0019],[-117.2198,38.0482],[-117.2397,38.0483],[-117.239,38.0641],[-117.2408,38.0705],[-117.2653,38.0932],[-117.6896,38.4731],[-118.0197,38.7599],[-118.197,38.9154],[-118.1972,38.9993],[-117.8559,39.0746],[-117.7748,39.092],[-117.7008,39.1058],[-117.6409,39.1149],[-117.5946,39.1231],[-117.4742,39.1431],[-117.3823,39.1562],[-117.3609,39.1585],[-117.3318,39.1629],[-117.3063,39.1634],[-117.2849,39.1633],[-117.1995,39.1632],[-117.0856,39.1628],[-117.0322,39.1626],[-117.0144,39.1626],[-116.9871,39.1625],[-116.9158,39.1631],[-116.7562,39.1622],[-116.7301,39.1625],[-116.5996,39.1616],[-116.5859,39.162],[-116.4815,39.1616],[-116.3497,39.1618],[-116.2358,39.1616],[-116.0548,39.1624],[-115.9082,39.1615]]]},\"properties\":{\"name\":\"Nye\",\"state\":\"NV\"}}]}","volume":"63","issue":"4","noUsgsAuthors":false,"publicationDate":"1968-06-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Hewett, Donnel Foster","contributorId":63872,"corporation":false,"usgs":true,"family":"Hewett","given":"Donnel","email":"","middleInitial":"Foster","affiliations":[],"preferred":false,"id":784570,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cornwall, Henry Rowland","contributorId":68304,"corporation":false,"usgs":true,"family":"Cornwall","given":"Henry","email":"","middleInitial":"Rowland","affiliations":[],"preferred":false,"id":784571,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Erd, Richard C.","contributorId":89899,"corporation":false,"usgs":true,"family":"Erd","given":"Richard","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":784572,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70221372,"text":"70221372 - 1968 - Environment of ore deposition at the Mex-Tex deposits, Hansonburg District, New Mexico, from studies of fluid inclusions","interactions":[],"lastModifiedDate":"2021-06-14T12:09:43.497397","indexId":"70221372","displayToPublicDate":"1968-06-01T11:30:19","publicationYear":"1968","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":"Environment of ore deposition at the Mex-Tex deposits, Hansonburg District, New Mexico, from studies of fluid inclusions","docAbstract":"<p><span>These&nbsp;</span>deposits<span>, in Pennsylvanian limestone and shale, contain barite, fluorite, low-silver galena with \"J-type\" lead, and quartz, and only minor amounts of other minerals. Mineralization occurs in veins, in blankets of bedded, rhythmically banded \"coontail\"&nbsp;</span>ore<span>, and in vuggy, coarsely crystalline open-space fillings in tectonic and solution channels in limestone adjacent to faults. Except for widespread silicification, the mineralization is very similar to that of the southern Illinois&nbsp;</span>deposits<span>. The main stages of hypogene mineralization are: 1) sphalerite, pyrite, galena and chalcopyrite; 2) five easily recognizable substages of fluorite with intermittent quartz and barite; and 3) late calcite.More than 500 primary and 2,500 pseudosecondary&nbsp;</span>inclusions<span>, mainly from fluorite, were studied on the freezing and heating microscope stages. Some primary&nbsp;</span>inclusions<span>&nbsp;contain organic matter. Gross supercooling indicates slow&nbsp;</span>ore<span>-</span>fluid<span>&nbsp;movement. Recognizable planes of pseudo-secondaries (each containing 20-200&nbsp;</span>inclusions<span>) yield data essentially identical with coeval primaries, but the few planes of presumed secondaries do not.The first three substages of fluorite formed from fluids that were essentially constant in temperature&nbsp;</span>at<span>&nbsp;186°-205° C (assumed pressure correction +10° C), but increased in salinity from aproximately 10 up to 15 weight percent salts. Succeeding substages formed&nbsp;</span>at<span>&nbsp;gradually decreasing temperatures (to about 140° C) and increasing salinity (maximum 17%), with breaks marking several individual substages. A few&nbsp;</span>inclusions<span>&nbsp;in an early barite have anomalously low homogenization temperatures. Coarse selenite has primary&nbsp;</span>inclusions<span>&nbsp;full of fresh water and hence is presumed to be supergene.These data do not prove any given theory or origin for the fluids or the&nbsp;</span>deposits<span>, but they do place some limits on possible mechanisms of origin.</span></p>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.63.4.336","usgsCitation":"Roedder, E., Heyl, A.V., and Creel, J., 1968, Environment of ore deposition at the Mex-Tex deposits, Hansonburg District, New Mexico, from studies of fluid inclusions: Economic Geology, v. 63, no. 4, https://doi.org/10.2113/gsecongeo.63.4.336.","productDescription":"13 p.","endPage":"336","numberOfPages":"348","costCenters":[],"links":[{"id":386435,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","state":"New Mexico","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -109.0283203125,\n              37.00255267215955\n            ],\n            [\n              -109.1162109375,\n              31.39115752282472\n            ],\n            [\n              -108.25927734375,\n              31.353636941500987\n            ],\n            [\n              -108.19335937499999,\n              31.82156451492074\n            ],\n            [\n              -103.0517578125,\n              32.02670629333614\n            ],\n            [\n              -103.0517578125,\n              36.94989178681327\n            ],\n            [\n              -109.0283203125,\n              37.00255267215955\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"63","issue":"4","noUsgsAuthors":false,"publicationDate":"1968-06-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Roedder, E.","contributorId":100986,"corporation":false,"usgs":true,"family":"Roedder","given":"E.","affiliations":[],"preferred":false,"id":817444,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heyl, A. V.","contributorId":70032,"corporation":false,"usgs":true,"family":"Heyl","given":"A.","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":817445,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Creel, J.P.","contributorId":260173,"corporation":false,"usgs":false,"family":"Creel","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":817446,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70221371,"text":"70221371 - 1968 - The synthesis of ferroselite from an aqueous solution at low temperature","interactions":[],"lastModifiedDate":"2021-06-11T16:29:16.4881","indexId":"70221371","displayToPublicDate":"1968-06-01T11:26:44","publicationYear":"1968","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":"The synthesis of ferroselite from an aqueous solution at low temperature","docAbstract":"<p>Ferroselite<span>, FeSe&nbsp;</span><sub>2</sub><span>, is commonly associated with sandstone-type uranium deposits. Although it has been previously synthesized, the conditions of&nbsp;</span>synthesis<span>&nbsp;were not applicable to the natural system, and the literature did not provide any information on the formation of natural&nbsp;</span>ferroselite<span>. The U. S. Geological Survey's Ambrosia Lake study, however, was concerned with the formation of&nbsp;</span>ferroselite<span>&nbsp;under more natural conditions. Thus, in this work, the&nbsp;</span>synthesis<span>&nbsp;of&nbsp;</span>ferroselite<span>&nbsp;was restricted to conditions more nearly approaching the conditions of the formation of sandstone-type uranium deposits-a&nbsp;</span>low<span>&nbsp;</span>temperature<span>&nbsp;and an&nbsp;</span>aqueous<span>&nbsp;environment. A&nbsp;</span>solution<span>&nbsp;of sodium seleno-sulfate, Na&nbsp;</span><sub>2</sub><span>SSeO&nbsp;</span><sub>3</sub><span>, stood in contact with freshly precipitated iron sulfide, FeS, for 10 days under an inert atmosphere&nbsp;</span>at<span>&nbsp;80° C. The final product was identified by its diffraction pattern and consisted of FeSe&nbsp;</span><sub>2</sub><span>&nbsp;mixed with about 10 percent FeS.</span></p>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.63.4.418","usgsCitation":"Warren, C.G., 1968, The synthesis of ferroselite from an aqueous solution at low temperature: Economic Geology, v. 63, no. 4, p. 418-419, https://doi.org/10.2113/gsecongeo.63.4.418.","productDescription":"2 p.","startPage":"418","endPage":"419","costCenters":[],"links":[{"id":386434,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"63","issue":"4","noUsgsAuthors":false,"publicationDate":"1968-06-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Warren, C. G.","contributorId":41427,"corporation":false,"usgs":true,"family":"Warren","given":"C.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":817443,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221370,"text":"70221370 - 1968 - Use of mercurous chloride to recover trace amounts of gold from waters","interactions":[],"lastModifiedDate":"2021-06-11T16:25:54.837488","indexId":"70221370","displayToPublicDate":"1968-06-01T11:21:42","publicationYear":"1968","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":"Use of mercurous chloride to recover trace amounts of gold from waters","docAbstract":"<p>No abstract available.&nbsp;</p>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.63.4.420","usgsCitation":"Jenne, E., Chao, T.T., and Heppting, L., 1968, Use of mercurous chloride to recover trace amounts of gold from waters: Economic Geology, v. 63, no. 4, p. 420-421, https://doi.org/10.2113/gsecongeo.63.4.420.","productDescription":"2 p.","startPage":"420","endPage":"421","costCenters":[],"links":[{"id":386433,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"63","issue":"4","noUsgsAuthors":false,"publicationDate":"1968-06-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Jenne, E. A.","contributorId":45716,"corporation":false,"usgs":true,"family":"Jenne","given":"E. A.","affiliations":[],"preferred":false,"id":817440,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chao, T. T.","contributorId":31900,"corporation":false,"usgs":true,"family":"Chao","given":"T.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":817441,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heppting, L.M.","contributorId":260172,"corporation":false,"usgs":false,"family":"Heppting","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":817442,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70221391,"text":"70221391 - 1968 - Reforestation with conifers-its effect on streamflow in central New York","interactions":[],"lastModifiedDate":"2021-06-14T12:39:25.123987","indexId":"70221391","displayToPublicDate":"1968-06-01T07:35:29","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2126,"text":"JAWRA","active":true,"publicationSubtype":{"id":10}},"title":"Reforestation with conifers-its effect on streamflow in central New York","docAbstract":"<p><span>During the early 1930's, more than 340,000 acres of abandoned farmland&nbsp;</span>in<span>&nbsp;</span>New<span>&nbsp;</span>York<span>&nbsp;State were purchased by the State Conservation Department for the planting, growing, and harvesting of trees. Since then, this land has developed from a heavy cover of weeds and brush into dense coniferous woodlands with trees averaging well over 30 feet high. Hydrologic data have been collected since 1932&nbsp;</span>in<span>&nbsp;</span>Central<span>&nbsp;</span>New<span>&nbsp;</span>York<span>&nbsp;to determine the&nbsp;</span>effect<span>&nbsp;of the&nbsp;</span>reforestation<span>&nbsp;on&nbsp;</span>streamflow<span>. Data are available for three small partly reforested areas and for one non‐reforested control area. Intensive statistical analyses of the data from the four study areas were made&nbsp;</span>in<span>&nbsp;1958. It was determined at that time that significant reductions&nbsp;</span>in<span>&nbsp;total runoff had occurred which were attributed to increases&nbsp;</span>in<span>&nbsp;interception and transpiration. Reductions&nbsp;</span>in<span>&nbsp;peak discharges during the dormant season also were indicated which were attributed to increased interception and sublimation of snowfall, and gradual desynchronization of snowmelt runoff from the wooded and open areas of partly reforested watersheds. Updating of the studies relating to peak discharges was completed&nbsp;</span>in<span>&nbsp;1967 and indicated that no further changes&nbsp;</span>in<span>&nbsp;relative peaks had taken place since 1958. From this it is concluded that the influence exerted by the forest had become maximum by 1958 and has remained stable since then.&nbsp;</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.1968.tb02932.x","usgsCitation":"Ayer, G.R., 1968, Reforestation with conifers-its effect on streamflow in central New York: JAWRA, v. 4, no. 2, p. 13-24, https://doi.org/10.1111/j.1752-1688.1968.tb02932.x.","productDescription":"10 p.","startPage":"13","endPage":"24","costCenters":[],"links":[{"id":386458,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","state":"New York","otherGeospatial":"central New York","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -78.9697265625,\n              42.342305278572816\n            ],\n            [\n              -73.54248046875,\n              42.342305278572816\n            ],\n            [\n              -73.54248046875,\n              43.51668853502906\n            ],\n            [\n              -78.9697265625,\n              43.51668853502906\n            ],\n            [\n              -78.9697265625,\n              42.342305278572816\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"4","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Ayer, Gordon Roundy","contributorId":52950,"corporation":false,"usgs":true,"family":"Ayer","given":"Gordon","email":"","middleInitial":"Roundy","affiliations":[],"preferred":false,"id":817497,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70209035,"text":"70209035 - 1968 - Tectonic emplacement of the Burro Mountain ultramafic body, Santa Lucia Range, California","interactions":[],"lastModifiedDate":"2020-03-11T19:06:20","indexId":"70209035","displayToPublicDate":"1968-05-01T18:58:17","publicationYear":"1968","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":"Tectonic emplacement of the Burro Mountain ultramafic body, Santa Lucia Range, California","docAbstract":"<p>The Burro Mountain body is a crudely equidimensional block of unusually fresh ultramafic rock. This block, along with numerous smaller and more elongate serpentinite bodies, has been emplaced in a highly sheared Franciscan terrane immediately west of the Nacimiento fault. This fault separates two major structural units: (1) on the east, a 40- by 300-mile block with basement of granitic rock, schists and gneisses, and (2) on the west, a 10- by 100-mile tract of Franciscan Formation.</p><p>Within the Burro Mountain body the primary rock types and their approximate percentages are: peridotite (65), dunite (35), and pseudopyroxenite (&lt;1). Variations among these lithologic types produce a well-defined internal structure, the two major elements of which are: (1) pervasive compositional layering whose attitude throughout the body varies little from N. 5° W., 80° E., and (2) superimposed discordant structures which may cut the earlier layering at any angle. The first set is thought to have been formed by metamorphic differentiation associated with internal deformation, the second set by metasomatic replacement, possibly a succeeding phase of the earlier metamorphic differentiation.</p><p>Serpentinization is nearly complete at the margins but progressively decreases toward the center of the body. Contact metasomatism, related to Serpentinization, is responsible for the sporadic presence of rodingites around the margins. An arm-like extension of the main body and linear trains of serpentinite bodies extending for miles parallel to the regional structure may represent previous marginal material sheared out during emplacement. The tectonic nature of the emplacement is demonstrated by the discordance of internal versus regional structure, discrepancy of metamorphic grade between ultramafic and country rock, extreme marginal shearing, lack of igneous contacts, and association with other tectonic inclusions.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1968)79[527:TEOTBM]2.0.CO;2","usgsCitation":"Burch, S.H., 1968, Tectonic emplacement of the Burro Mountain ultramafic body, Santa Lucia Range, California: GSA Bulletin, v. 79, no. 5, p. 527-544, https://doi.org/10.1130/0016-7606(1968)79[527:TEOTBM]2.0.CO;2.","productDescription":"18 p.","startPage":"527","endPage":"544","costCenters":[],"links":[{"id":373156,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Burro Mountain, Santa Lucia Range","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -121.30313873291016,\n              35.83743752447774\n            ],\n            [\n              -121.24048233032227,\n              35.83743752447774\n            ],\n            [\n              -121.24048233032227,\n              35.88571227867025\n            ],\n            [\n              -121.30313873291016,\n              35.88571227867025\n            ],\n            [\n              -121.30313873291016,\n              35.83743752447774\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"79","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Burch, Stephen H.","contributorId":19150,"corporation":false,"usgs":true,"family":"Burch","given":"Stephen","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":784596,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221426,"text":"70221426 - 1968 - Gneissic amphibolite at Las Palmas, Puerto Rico, and its significance in the early history of the greater antilles island arc","interactions":[],"lastModifiedDate":"2021-06-15T16:11:24.106752","indexId":"70221426","displayToPublicDate":"1968-05-01T11:07:21","publicationYear":"1968","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":"Gneissic amphibolite at Las Palmas, Puerto Rico, and its significance in the early history of the greater antilles island arc","docAbstract":"<p><span>The basal complex of&nbsp;</span>Puerto<span>&nbsp;</span>Rico<span>&nbsp;consists principally of serpentinite, minor amounts of chert and spilite, and locally small blocks of&nbsp;</span>amphibolite<span>. A detailed structural and metamorphic study of a relatively large block of&nbsp;</span>gneissic<span>&nbsp;</span>amphibolite<span>&nbsp;</span>at<span>&nbsp;</span>Las<span>&nbsp;</span>Palmas<span>&nbsp;reveals that the rock has undergone repeated deformation and regional metamorphism prior to contact metamorphism by intrusive serpentinite. The first event recorded by the&nbsp;</span>amphibolite<span>&nbsp;is&nbsp;</span>amphibolite<span>&nbsp;facies regional metamorphism. Foliation and some hornblende lineation were formed&nbsp;</span>at<span>&nbsp;this time. An increase&nbsp;</span>in<span>&nbsp;the intensity of regional metamorphism then produced quartzo-feldspathic segregations from the host rock, and was accompanied by small-scale folding and development of several types of lineation oblique (o the&nbsp;</span>early<span>&nbsp;hornblende lineation. The metamorphic intensity then decreased slightly and tectonic movement radically decreased, as nonfoliated but metamorphosed mafic dikes cut the&nbsp;</span>gneissic<span>&nbsp;</span>amphibolite<span>. As the metamorphic grade decreased further, late-stage kink-bands were developed&nbsp;</span>at<span>&nbsp;high angles to the earlier small-scale folding. Later, the&nbsp;</span>amphibolite<span>&nbsp;was intruded by serpen-tinite, causing incipient low-grade contact metamorphism and some calcium metasomatism. H. H. Hess has maintained that&nbsp;</span>Puerto<span>&nbsp;</span>Rico<span>&nbsp;and other islands&nbsp;</span>in<span>&nbsp;the&nbsp;</span>Greater<span>&nbsp;</span>Antilles<span>&nbsp;rest directly on oceanic crust, and that the intrusive serpentinite is derived from the bottom layer of the crust.&nbsp;</span>In<span>&nbsp;the&nbsp;</span>Las<span>&nbsp;</span>Palmas<span>&nbsp;area, the&nbsp;</span>amphibolite<span>&nbsp;formed prior to intrusion of serpentinite, indicating a complex preserpentinite&nbsp;</span>history<span>. Three interpretations of the&nbsp;</span>gneissic<span>&nbsp;</span>amphibolite<span>&nbsp;are considered. It may represent: (1) metamorphosed gabbroic rocks genetically related to the serpentinite, (2) regionally metamorphosed mafic rocks that are part of the oceanic crust, or (3) older mafic rocks regionally metamorphosed as part of an extensive pre-Late Cretaceous orogeny. The evidence from&nbsp;</span>Las<span>&nbsp;</span>Palmas<span>&nbsp;is not conclusive, but when considered&nbsp;</span>in<span>&nbsp;the regional framework, either of the last two interpretations seems reasonable.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1968)79[557:GAALPP]2.0.CO;2","usgsCitation":"Tobisch, O., 1968, Gneissic amphibolite at Las Palmas, Puerto Rico, and its significance in the early history of the greater antilles island arc: Geological Society of America Bulletin, v. 79, no. 5, p. 557-574, https://doi.org/10.1130/0016-7606(1968)79[557:GAALPP]2.0.CO;2.","productDescription":"18 p.","startPage":"557","endPage":"574","costCenters":[],"links":[{"id":386494,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","otherGeospatial":"Puerto Rico","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -67.467041015625,\n              17.78007412664325\n            ],\n            [\n              -65.21484375,\n              17.78007412664325\n            ],\n            [\n              -65.21484375,\n              18.687878686034182\n            ],\n            [\n              -67.467041015625,\n              18.687878686034182\n            ],\n            [\n              -67.467041015625,\n              17.78007412664325\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"79","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Tobisch, O. T.","contributorId":74756,"corporation":false,"usgs":true,"family":"Tobisch","given":"O. T.","affiliations":[],"preferred":false,"id":817679,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221386,"text":"70221386 - 1968 - Monitoring of changes in quality of ground water","interactions":[],"lastModifiedDate":"2021-06-14T12:07:52.93776","indexId":"70221386","displayToPublicDate":"1968-05-01T07:04:04","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3825,"text":"Groundwater","active":true,"publicationSubtype":{"id":10}},"title":"Monitoring of changes in quality of ground water","docAbstract":"<p>Ground water of acceptable quality is commonly interspersed with water of inferior quality. Water of inferior quality may be naturally occurring salty water commonly underlying fresh water, or it may be enclaves of contaminated water from wastes that lie in the fresh-water bodies. Disposal of wastes on and in the ground and pumping of water from wells cause a dispersion of contaminated water; migration of contaminated water toward wells may be spontaneously induced by the natural hydraulic gradient, or it may be induced artificially by the cone of depression about one or more wells. Economic methods of determining precisely the boundary zones between contaminated and uncontaminated water are not available. Much reliance is placed on monitoring wells.</p><p>A prerequisite to monitoring is a synthetic hydrogeologic framework or model in which the behavior of the contaminated water is conceived. Such a conceptual model, using pertinent data that are available, helps to assess the need for monitoring and to guide a monitoring program for optimum results. Unplanned, indiscriminate monitoring of water from wells is expensive, inefficient, and fallible. The need for monitoring will increase in the future; yet, the proper objective is to improve the technology of determining the distribution of contaminated water so that monitoring can be minimized and conducted with optimum results.</p>","language":"English","publisher":"NGWA The Groundwater Association","doi":"10.1111/j.1745-6584.1968.tb01645.x","usgsCitation":"LeGrand, H.E., 1968, Monitoring of changes in quality of ground water: Groundwater, v. 6, no. 3, p. 14-18, https://doi.org/10.1111/j.1745-6584.1968.tb01645.x.","productDescription":"5 p.","startPage":"14","endPage":"18","costCenters":[],"links":[{"id":386448,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationDate":"2006-07-06","publicationStatus":"PW","contributors":{"authors":[{"text":"LeGrand, H. E.","contributorId":54571,"corporation":false,"usgs":true,"family":"LeGrand","given":"H.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":817476,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70010830,"text":"70010830 - 1968 - Unmineralized fossil bacteria: A retraction","interactions":[],"lastModifiedDate":"2026-02-06T15:43:50.62026","indexId":"70010830","displayToPublicDate":"1968-04-26T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Unmineralized fossil bacteria: A retraction","docAbstract":"<p>No abstract available.&nbsp;</p>","language":"English","publisher":"AAAS","doi":"10.1126/science.160.3826.437.b","issn":"00368075","usgsCitation":"Bradley, W.H., 1968, Unmineralized fossil bacteria: A retraction: Science, v. 160, no. 3826, p. 437-437, https://doi.org/10.1126/science.160.3826.437.b.","productDescription":"1 p.","startPage":"437","endPage":"437","costCenters":[],"links":[{"id":499650,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"160","issue":"3826","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbcd8e4b08c986b328e35","contributors":{"authors":[{"text":"Bradley, W. H.","contributorId":102452,"corporation":false,"usgs":true,"family":"Bradley","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":359745,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":5220558,"text":"5220558 - 1968 - Aerial estimation of the size of gull breeding colonies","interactions":[],"lastModifiedDate":"2025-02-12T16:58:44.581904","indexId":"5220558","displayToPublicDate":"1968-04-15T00:00:00","publicationYear":"1968","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":"Aerial estimation of the size of gull breeding colonies","docAbstract":"<p>Counts on photographs and visual estimates of the numbers of territorial gulls are usually reliable indicators of the number of gull nests, but single visual estimates are not adequate to measure the number of nests in individual colonies. To properly interpret gull counts requires that several islands with known numbers of nests be photographed to establish the ratio of gulls to nests applicable for a given local census. Visual estimates are adequate to determine total breeding gull numbers by regions. Neither visual estimates nor photography will reliably detect annual changes of less than about 25 percent.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3798973","usgsCitation":"Kadlec, J., and Drury, W., 1968, Aerial estimation of the size of gull breeding colonies: Journal of Wildlife Management, v. 32, no. 2, p. 287-293, https://doi.org/10.2307/3798973.","productDescription":"7 p.","startPage":"287","endPage":"293","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":197981,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -68.21819084817179,\n              44.991180096594604\n            ],\n            [\n              -70.48665326156282,\n              43.639116739990435\n            ],\n            [\n              -71.88742711628743,\n              41.98301102294387\n            ],\n            [\n              -74.19566403049824,\n              40.583670242284455\n            ],\n            [\n              -73.09240308954952,\n              40.394950172491676\n            ],\n            [\n              -69.32259991600421,\n              41.67809588918607\n            ],\n            [\n              -69.55100648037573,\n              43.053376402367874\n            ],\n            [\n              -65.18460824566323,\n              45.26133250788709\n            ],\n            [\n              -65.67618946593834,\n              45.62652634133954\n            ],\n            [\n              -68.21819084817179,\n              44.991180096594604\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"32","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b03e4b07f02db698e77","contributors":{"authors":[{"text":"Kadlec, J.A.","contributorId":27565,"corporation":false,"usgs":true,"family":"Kadlec","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":332011,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Drury, W.H.","contributorId":22870,"corporation":false,"usgs":true,"family":"Drury","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":332010,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":5222439,"text":"5222439 - 1968 - Possible differentiation of natal areas of North American waterfowl by neutron activation analysis","interactions":[],"lastModifiedDate":"2025-02-12T17:04:52.944308","indexId":"5222439","displayToPublicDate":"1968-04-05T00:00:00","publicationYear":"1968","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":"Possible differentiation of natal areas of North American waterfowl by neutron activation analysis","docAbstract":"<p>The possibility of using neutron activation analyses to differentiate sources of North American waterfowl was investigated by irradiating rectrices and wing bones of birds collected in several localities, and comparing the characteristic gamma-ray spectra. Canada goose (<i>Branta canadensis</i>) rectrices from Oregon specimens could be distinguished from those taken in Wisconsin and Colorado based on higher levels of Mn. Mallard (<i>Anas platyrhynchos</i>), black duck (<i>A. rubripes</i>), and blue-winged teal (<i>A. discors</i>) wing bones from Wisconsin, Colorado, and New Brunswick could not be clearly identified as to locality from levels of Ca, Al, Na, Mn, and Cl.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3798971","usgsCitation":"Devine, T., and Peterle, T., 1968, Possible differentiation of natal areas of North American waterfowl by neutron activation analysis: Journal of Wildlife Management, v. 32, no. 2, p. 274-279, https://doi.org/10.2307/3798971.","productDescription":"6 p.","startPage":"274","endPage":"279","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":201643,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado, Oregon, 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 \"}}]}","volume":"32","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad5e4b07f02db683b83","contributors":{"authors":[{"text":"Devine, T.","contributorId":28710,"corporation":false,"usgs":true,"family":"Devine","given":"T.","email":"","affiliations":[],"preferred":false,"id":336308,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peterle, T.J.","contributorId":10108,"corporation":false,"usgs":true,"family":"Peterle","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":336307,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":1014120,"text":"1014120 - 1968 - Ultrastructure of lymphocystis virus","interactions":[],"lastModifiedDate":"2025-02-26T22:37:38.435876","indexId":"1014120","displayToPublicDate":"1968-04-05T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2497,"text":"Journal of Virology","active":true,"publicationSubtype":{"id":10}},"title":"Ultrastructure of lymphocystis virus","docAbstract":"<p>Lymphocystis virus obtained from bluegills (<i>Lepomis macrochirus</i>) was cultured in the permanent bluegill cell line BF-2 and examined by electron microscopy in ultra-thin sections of cell cultures and in negative-contrast preparations from cells and from centrifuged culture medium. According to negative-contrast preparations, the icosahedral virions have an overall diameter close to but not exceeding 300 m<span>μ</span>. Delicate filaments seem to issue from the vertices. In collapsed virions, an ordered array of morphological units was seen. Positively contrasted virions in ultrathin sections show a shell with three dark (heavy metal-stained) layers alternating with and separated by two clear layers. The acquisition of an additional outer membrane during release from the cell, as found in African swine fever virus, was never seen. Morphologically, lymphocystis virus is considered to be closely related to Tipula iridescent virus.</p>","language":"English","publisher":"American Society for Microbiology","doi":"10.1128/jvi.2.4.393-399.1968","usgsCitation":"Zwillinberg, L., and Wolf, K., 1968, Ultrastructure of lymphocystis virus: Journal of Virology, v. 2, no. 4, p. 393-399, https://doi.org/10.1128/jvi.2.4.393-399.1968.","productDescription":"7 p.","startPage":"393","endPage":"399","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":487153,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1128/jvi.2.4.393-399.1968","text":"Publisher Index Page"},{"id":197475,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a26e4b07f02db60f65e","contributors":{"authors":[{"text":"Zwillinberg, L.O.","contributorId":74100,"corporation":false,"usgs":true,"family":"Zwillinberg","given":"L.O.","email":"","affiliations":[],"preferred":false,"id":319828,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wolf, K.","contributorId":16344,"corporation":false,"usgs":true,"family":"Wolf","given":"K.","email":"","affiliations":[],"preferred":false,"id":319827,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":1001650,"text":"1001650 - 1968 - Age determination of blue-winged teal","interactions":[],"lastModifiedDate":"2025-02-14T16:45:24.957448","indexId":"1001650","displayToPublicDate":"1968-04-01T00:00:00","publicationYear":"1968","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":"Age determination of blue-winged teal","docAbstract":"<p>Primary feather length, markings on the greater secondary coverts, and the degree of bill spotting were evaluated as characters for use in the spring to distinguish first-year, blue-winged teal (<i>Anas discors</i>) females from older ones. The length of the 10th primary feather did not prove suitable to separate different aged females. Extreme primary lengths might be used to determine the age of some males. In females that have been through a postnuptial molt the greater secondary coverts have a more symmetrical, and more acutely angled, white, inverted 'V'-marking. Any female with a 'V' subjectively classified as good has gone through at least one postnuptial molt, and a female with no sign of a 'V' on the coverts is a juvenile or yearling before her first postnuptial molt. By measuring the longest bill spot on the upper mandible of each known-age female, it was possible to determine the age of some female teal. Because the spots fade during the breeding season, no lower size limit could be set to delineate first-year females at that time of year, but any nest-trapped hen with a spot longer than 10 mm was considered to be older than 1 year. Upper and lower limits were also established to distinguish some yearlings and 2-year-olds in the fall.</p>","language":"English","publisher":"Wiley","doi":"10.2307/3798970","usgsCitation":"Dane, C., 1968, Age determination of blue-winged teal: Journal of Wildlife Management, v. 32, no. 2, p. 267-274, https://doi.org/10.2307/3798970.","productDescription":"8 p.","startPage":"267","endPage":"274","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133672,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae3e4b07f02db6893a0","contributors":{"authors":[{"text":"Dane, C.W.","contributorId":95003,"corporation":false,"usgs":true,"family":"Dane","given":"C.W.","email":"","affiliations":[],"preferred":false,"id":311436,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70227111,"text":"70227111 - 1968 - Chapter IX: Lunar theory and processes","interactions":[],"lastModifiedDate":"2021-12-29T19:14:42.699422","indexId":"70227111","displayToPublicDate":"1968-03-15T12:59:21","publicationYear":"1968","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Chapter IX: Lunar theory and processes","docAbstract":"<p>Whereas the previous Surveyor missions were undertaken to examine mare surfaces as potential landing areas for the <i>Apollo</i> Program, the primary objective of the <i>Surveyor VII</i> mission, based on purely scientific motivations, was to explore a contrasting highland region and, specifically, to determine the chemistry of the highland material for comparison with the <i>Surveyor V</i> and <i>VI</i> chemical analyses at the mare sites. Site selection was limited to some extent by Surveyor operational constraints, but primarily by the requirements of 10-m-resolution photographs from the <i>Lunar Orbiter</i> Program for landing site certification. None of the nine sites studied in detail appeared capable of providing an unambiguous answer to the highland chemistry. The final selection of a site to the north of Tycho was based on the belief that the youthful character of the structure implied a minimum of contamination to the surface layers by foreign material via meteoritic processes. Moreover, the selection of a site near the rim of a major lunar crater promised insight into the “microscale” properties of a structure that represents the dominant morphologic feature on the moon. </p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Surveyor VII mission report: Part II: Science results","largerWorkSubtype":{"id":3,"text":"Organization Series"},"language":"English","publisher":"Jet Propulsion Laboratory","usgsCitation":"Gault, D.E., Adams, J.B., Collins, R.J., Kuiper, G.P., Masursky, H., O’Keefe, J.A., Phinney, R.A., and Shoemaker, E.M., 1968, Chapter IX: Lunar theory and processes, chap. <i>of</i> Surveyor VII mission report: Part II: Science results, p. 267-314.","productDescription":"JPL TR-32-1264, 48 p.","startPage":"267","endPage":"314","costCenters":[],"links":[{"id":393603,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":393602,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://ntrs.nasa.gov/api/citations/19680028774/downloads/19680028774.pdf","size":"688 MB","linkFileType":{"id":1,"text":"pdf"}}],"otherGeospatial":"Moon, Tycho crater","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Gault, D. E.","contributorId":38580,"corporation":false,"usgs":true,"family":"Gault","given":"D.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":829664,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Adams, J. B.","contributorId":21679,"corporation":false,"usgs":true,"family":"Adams","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":829665,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Collins, R. J.","contributorId":77655,"corporation":false,"usgs":true,"family":"Collins","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":829666,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kuiper, G. P.","contributorId":9394,"corporation":false,"usgs":true,"family":"Kuiper","given":"G.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":829667,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Masursky, H.","contributorId":33823,"corporation":false,"usgs":true,"family":"Masursky","given":"H.","affiliations":[],"preferred":false,"id":829668,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"O’Keefe, J. A.","contributorId":92420,"corporation":false,"usgs":true,"family":"O’Keefe","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":829669,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Phinney, R. A.","contributorId":8609,"corporation":false,"usgs":true,"family":"Phinney","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":829670,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Shoemaker, Eugene Merle","contributorId":20342,"corporation":false,"usgs":true,"family":"Shoemaker","given":"Eugene","email":"","middleInitial":"Merle","affiliations":[],"preferred":false,"id":829671,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70011546,"text":"70011546 - 1968 - Exsolution in clinoamphiboles","interactions":[],"lastModifiedDate":"2026-02-06T15:48:11.561939","indexId":"70011546","displayToPublicDate":"1968-03-08T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Exsolution in clinoamphiboles","docAbstract":"<p><span id=\"_mce_caret\" data-mce-bogus=\"1\" data-mce-type=\"format-caret\"><span>Ten amphibole specimens from a variety of metamorphic rocks such as talc schists, eclogites, and metamorphosed iron formations contain lamellae of a second amphibole oriented parallel to (1̅01) or (100), or both, of the host. Tremolites, actinolites, and hornblendes commonly have lamellae of a calcium-poor clinoamphibole with&nbsp;</span><i>P</i><span>2</span><sub>1</sub><span>/</span><i>m</i><span>&nbsp;space-group symmetry, or lamellae of cummingtonite with&nbsp;</span><i>C</i><span>2/</span><i>m</i><span>&nbsp;space-group symmetry. Likewise cummingtonites and&nbsp;</span><i>P</i><span>2</span><sub>1</sub><span>/</span><i>m</i><span>&nbsp;clinoamphiboles commonly contain lamellae of calcium-rich&nbsp;</span><i>C</i><span>2/</span><i>m</i><span>&nbsp;amphiboles such as tremolite. Results of x-ray diffraction, electron-probe, and microscope studies indicate that most lamellae result from unmixing of a homogeneous amphibole. The&nbsp;</span><i>P</i><span>2</span><sub>1</sub><span>/</span><i>m</i><span>&nbsp;clinoamphibole is analogous to the clinopyroxene pigeonite in agreement with the results of M. G. Bown.</span></span></p>","language":"English","publisher":"American Association for the Advancement of Science.","doi":"10.1126/science.159.3819.1099","issn":"00368075","usgsCitation":"Ross, M., Papike, J.J., and Weiblen, P., 1968, Exsolution in clinoamphiboles: Science, v. 159, no. 3819, p. 1099-1102, https://doi.org/10.1126/science.159.3819.1099.","productDescription":"4 p.","startPage":"1099","endPage":"1102","costCenters":[],"links":[{"id":220916,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"159","issue":"3819","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0e3ae4b0c8380cd53361","contributors":{"authors":[{"text":"Ross, M.","contributorId":8026,"corporation":false,"usgs":true,"family":"Ross","given":"M.","email":"","affiliations":[],"preferred":false,"id":361367,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Papike, J. J.","contributorId":18488,"corporation":false,"usgs":true,"family":"Papike","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":361368,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weiblen, P.W.","contributorId":31884,"corporation":false,"usgs":true,"family":"Weiblen","given":"P.W.","email":"","affiliations":[],"preferred":false,"id":361369,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70221379,"text":"70221379 - 1968 - Depth control of some concordant intrusions","interactions":[],"lastModifiedDate":"2021-06-11T18:13:02.858688","indexId":"70221379","displayToPublicDate":"1968-03-01T13:07:58","publicationYear":"1968","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":"Depth control of some concordant intrusions","docAbstract":"<p><span>Analysis of geologic data from 54 localities, mainly in the western United States, shows that&nbsp;</span>concordant<span>&nbsp;igneous masses intruded zones in nearly flat-lying sedimentary rocks where the thickness of cover was 3000 to 7500 feet. The&nbsp;</span>depth<span>&nbsp;of&nbsp;</span>intrusion<span>&nbsp;was apparently affected by a well-defined parting surface (bedding plane or unconformity), static load of the overburden (lithostatic pressure), and presence of a fluid barrier above the&nbsp;</span>intrusion<span>. Most bodies intruded along well-defined bedding planes in sedimentary rocks and flow surfaces in extrusive igneous rocks; some intruded along unconformities. The range in overburden pressure is about 3000 to 7500 psi for&nbsp;</span>intrusions<span>&nbsp;at depths of 3000 to 7500 feet. Magma pressure for lateral injection at the lower limit of the&nbsp;</span>depth<span>&nbsp;range, therefore, must have exceeded 7500 psi to lift 7500 feet of overburden. A fluid barrier, such as a shale, overlies almost all&nbsp;</span>intrusions<span>&nbsp;studied and tended to retard upward advance of magma. At depths less than 3000 feet, the barrier shales may be brittle and easily ruptured by the fluid pressure, permitting steam and magma to escape to the surface. Below 3000 feet the shales may become ductile.&nbsp;</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1968)79[315:DCOSCI]2.0.CO;2","usgsCitation":"Mudge, M., 1968, Depth control of some concordant intrusions: Geological Society of America Bulletin, v. 79, no. 3, p. 315-332, https://doi.org/10.1130/0016-7606(1968)79[315:DCOSCI]2.0.CO;2.","productDescription":"18 p.","startPage":"315","endPage":"332","costCenters":[],"links":[{"id":386442,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"79","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Mudge, Melville R.","contributorId":72370,"corporation":false,"usgs":true,"family":"Mudge","given":"Melville R.","affiliations":[],"preferred":false,"id":817458,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70210182,"text":"70210182 - 1968 - New names for late Pleistocene diatom species","interactions":[],"lastModifiedDate":"2020-05-19T16:37:56.320617","indexId":"70210182","displayToPublicDate":"1968-02-28T11:31:07","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2412,"text":"Journal of Paleontology","active":true,"publicationSubtype":{"id":10}},"title":"New names for late Pleistocene diatom species","docAbstract":"<p><span>The homonyn Navicula rotunda Andrews is replaced by the name N. rotundella Andrews; the homonym Epithemia irregularis Andrews is replaced by the name E. emarginata Andrews. The diatoms are from Trempealeau Valley, Wisconsin (Andrews, 1966).</span></p>","language":"English","publisher":"The Paleontological Society","usgsCitation":"Andrews, G., 1968, New names for late Pleistocene diatom species: Journal of Paleontology, v. 42, no. 1.","productDescription":"1 p.","startPage":"244","costCenters":[],"links":[{"id":374931,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.geoscienceworld.org/jpaleontol/article/42/1/244/80339/New-names-for-late-Pleistocene-diatom-species"},{"id":374932,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wisconsin","otherGeospatial":"Trempealeau Valley","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -91.55593872070311,\n              43.93647277854145\n            ],\n            [\n              -90.91049194335938,\n              43.93647277854145\n            ],\n            [\n              -90.91049194335938,\n              44.64129986075226\n            ],\n            [\n              -91.55593872070311,\n              44.64129986075226\n            ],\n            [\n              -91.55593872070311,\n              43.93647277854145\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"42","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Andrews, George W.","contributorId":40621,"corporation":false,"usgs":true,"family":"Andrews","given":"George W.","affiliations":[],"preferred":false,"id":789466,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70011545,"text":"70011545 - 1968 - Hydration rind dates rhyolite flows","interactions":[],"lastModifiedDate":"2026-02-06T16:03:02.512007","indexId":"70011545","displayToPublicDate":"1968-02-23T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Hydration rind dates rhyolite flows","docAbstract":"Hydration of obsidian has been used to date rhyolite flows, containing obsidian or porphyritic glass, at Glass Mountain (Medicine Lake Highlands) and Mono Lake, California. The method is simple and rapid and can be used to date flows that erupted between 200 and approximately 200,000 years ago.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.159.3817.878","issn":"00368075","usgsCitation":"Friedman, I., 1968, Hydration rind dates rhyolite flows: Science, v. 159, no. 3817, p. 878-880, https://doi.org/10.1126/science.159.3817.878.","productDescription":"3 p.","startPage":"878","endPage":"880","costCenters":[],"links":[{"id":220915,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Glass Mountain, Mono Lake","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -119.19821042260747,\n              38.07304854451809\n            ],\n            [\n              -119.19821042260747,\n              37.89091785569592\n            ],\n            [\n              -118.7895832174465,\n              37.89091785569592\n            ],\n            [\n              -118.7895832174465,\n              38.07304854451809\n            ],\n            [\n              -119.19821042260747,\n              38.07304854451809\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"159","issue":"3817","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a32cae4b0c8380cd5ea9d","contributors":{"authors":[{"text":"Friedman, I.","contributorId":95596,"corporation":false,"usgs":true,"family":"Friedman","given":"I.","email":"","affiliations":[],"preferred":false,"id":361366,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70010801,"text":"70010801 - 1968 - Spreading of the ocean floor: Undeformed sediments in the Peru-Chile Trench","interactions":[],"lastModifiedDate":"2026-02-06T15:54:09.523449","indexId":"70010801","displayToPublicDate":"1968-02-23T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Spreading of the ocean floor: Undeformed sediments in the Peru-Chile Trench","docAbstract":"None of the expected stratigraphic and structural effects of a spreading sea floor have been imposed on the sedimentary fill of the Peru-Chile Trench. During at least the last several million years, and perhaps during much of the Cenozoic, the trench has not been affected by an oceanic crust thrusting under the continent.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.159.3817.869","issn":"00368075","usgsCitation":"Scholl, D., von Huene, R.E., and Ridlon, J., 1968, Spreading of the ocean floor: Undeformed sediments in the Peru-Chile Trench: Science, v. 159, no. 3817, p. 869-871, https://doi.org/10.1126/science.159.3817.869.","productDescription":"3 p.","startPage":"869","endPage":"871","costCenters":[],"links":[{"id":218805,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Chile, Peru","otherGeospatial":"Peru-Chile Trench","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -76.55297427231237,\n              -14.63885707436792\n            ],\n            [\n              -76.55297427231237,\n              -22.54059894698328\n            ],\n            [\n              -69.2411368622086,\n              -22.54059894698328\n            ],\n            [\n              -69.2411368622086,\n              -14.63885707436792\n            ],\n            [\n              -76.55297427231237,\n              -14.63885707436792\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"159","issue":"3817","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b960ee4b08c986b31b285","contributors":{"authors":[{"text":"Scholl, D.W.","contributorId":106461,"corporation":false,"usgs":true,"family":"Scholl","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":359680,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"von Huene, Roland E. 0000-0003-1301-3866 rvonhuene@usgs.gov","orcid":"https://orcid.org/0000-0003-1301-3866","contributorId":191070,"corporation":false,"usgs":true,"family":"von Huene","given":"Roland","email":"rvonhuene@usgs.gov","middleInitial":"E.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":7065,"text":"USGS emeritus","active":true,"usgs":false}],"preferred":false,"id":359678,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ridlon, J.B.","contributorId":101804,"corporation":false,"usgs":true,"family":"Ridlon","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":359679,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70011578,"text":"70011578 - 1968 - Nutrient loss accelerated by clear-cutting of a forest ecosystem","interactions":[],"lastModifiedDate":"2026-02-06T16:32:01.72506","indexId":"70011578","displayToPublicDate":"1968-02-23T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Nutrient loss accelerated by clear-cutting of a forest ecosystem","docAbstract":"The forest of a small watershed-ecosystem was cut in order to determine the effects of removal of vegetation on nutrient cycles. Relative to undisturbed ecosystems, the cut ecosystem exhibited accelerated loss of nutrients: nitrogen lost during the first year after cutting was equivalent to the amount annually turned over in an undisturbed system, and losses of cations were 3 to 20 times greater than from comparable undisturbed systems. Possible causes of the pattern of nutrient loss from the cut ecosystem are discussed.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.159.3817.882","issn":"00368075","usgsCitation":"Bormann, F., Likens, G., Fisher, D., and Pierce, R., 1968, Nutrient loss accelerated by clear-cutting of a forest ecosystem: Science, v. 159, no. 3817, p. 882-884, https://doi.org/10.1126/science.159.3817.882.","productDescription":"3 p.","startPage":"882","endPage":"884","costCenters":[],"links":[{"id":221449,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"159","issue":"3817","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a698ae4b0c8380cd73da8","contributors":{"authors":[{"text":"Bormann, F.H.","contributorId":42840,"corporation":false,"usgs":true,"family":"Bormann","given":"F.H.","email":"","affiliations":[],"preferred":false,"id":361448,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Likens, G.E.","contributorId":68893,"corporation":false,"usgs":true,"family":"Likens","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":361449,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fisher, D.W.","contributorId":77519,"corporation":false,"usgs":true,"family":"Fisher","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":361450,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pierce, R.S.","contributorId":92928,"corporation":false,"usgs":true,"family":"Pierce","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":361451,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70011641,"text":"70011641 - 1968 - Diatremes with kimberlitic affinities in north-central Montana","interactions":[],"lastModifiedDate":"2026-02-06T16:38:17.169258","indexId":"70011641","displayToPublicDate":"1968-02-09T00:00:00","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Diatremes with kimberlitic affinities in north-central Montana","docAbstract":"Diatremes in the Missouri River Breaks demonstrate systematic subsidence-ring structure, contain inclusions derived from far above and far below, and have been produced by gas-rich eruptions of alkalic ultramafic magmas. Similar magmas have produced diatremes in many localities in the world and are known to be closely associated with and probably parental to kimberlites.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.159.3815.622","issn":"00368075","usgsCitation":"Hearn, B.C., 1968, Diatremes with kimberlitic affinities in north-central Montana: Science, v. 159, no. 3815, p. 622-625, https://doi.org/10.1126/science.159.3815.622.","productDescription":"4 p.","startPage":"622","endPage":"625","costCenters":[],"links":[{"id":221304,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Montana","otherGeospatial":"Missouri River Breaks, north-central Montana","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -110.95918793994691,\n              48.356474610986396\n            ],\n            [\n              -110.95918793994691,\n              47.31912734943825\n            ],\n            [\n              -106.3242971831789,\n              47.31912734943825\n            ],\n            [\n              -106.3242971831789,\n              48.356474610986396\n            ],\n            [\n              -110.95918793994691,\n              48.356474610986396\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"159","issue":"3815","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a00afe4b0c8380cd4f872","contributors":{"authors":[{"text":"Hearn, B. C. Jr.","contributorId":37709,"corporation":false,"usgs":true,"family":"Hearn","given":"B.","suffix":"Jr.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":361598,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70209026,"text":"70209026 - 1968 - Alkali amphiboles from the blueschists of Cazadero, California","interactions":[],"lastModifiedDate":"2020-03-11T18:14:41","indexId":"70209026","displayToPublicDate":"1968-02-01T18:10:02","publicationYear":"1968","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2420,"text":"Journal of Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Alkali amphiboles from the blueschists of Cazadero, California","docAbstract":"<p><span>Alkali amphiboles from Type III and Type IV metamorphic zones in blueschist facies rocks of Cazadero, California, and from comparable New Caledonian rocks have been characterized by X-ray crystallographic, optical, and chemical methods. The composition of any particular alkali amphibole is strongly controlled by the bulk composition of the host rock. Within the blueschist facies, metamorphic zones are not characterized by changes in amphibole composition. All the alkali amphiboles studied herein belong to the C2/m space group and complete miscibility between glaucophane and riebeckite has been demonstrated for the conditions prevailing during metamorphism in the Cazadero and New Caledonian blueschists. Linear relationships are found between unit-cell dimensions and variations in composition between glaucophane and riebeckite. The alkali amphiboles of glaucophane compositions belong to the high pressure-low temperature series, glaucophane II-riebeckite. Limited miscibility of actinolite in glaucophane may be characteristic of blueschist facies metamorphism.</span></p>","language":"English","publisher":"Oxford Academic","doi":"10.1093/petrology/9.1.105","usgsCitation":"Coleman, R.G., and Papike, J.J., 1968, Alkali amphiboles from the blueschists of Cazadero, California: Journal of Petrology, v. 9, no. 1, p. 105-122, https://doi.org/10.1093/petrology/9.1.105.","productDescription":"18 p.","startPage":"105","endPage":"122","costCenters":[],"links":[{"id":373147,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Cazadero","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -123.10996055603026,\n              38.515198583370584\n            ],\n            [\n              -123.06507110595703,\n              38.515198583370584\n            ],\n            [\n              -123.06507110595703,\n              38.54514465104359\n            ],\n            [\n              -123.10996055603026,\n              38.54514465104359\n            ],\n            [\n              -123.10996055603026,\n              38.515198583370584\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"9","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Coleman, R. G.","contributorId":75170,"corporation":false,"usgs":true,"family":"Coleman","given":"R.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":784574,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Papike, J. J.","contributorId":18488,"corporation":false,"usgs":true,"family":"Papike","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":784575,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
]}