{"pageNumber":"6480","pageRowStart":"161975","pageSize":"25","recordCount":184904,"records":[{"id":70225512,"text":"70225512 - 1969 - International geophysics: Symposium on the hydrology of deltas","interactions":[],"lastModifiedDate":"2021-10-18T20:16:10.408078","indexId":"70225512","displayToPublicDate":"1969-10-01T14:35:48","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7458,"text":"Eos Science News","active":true,"publicationSubtype":{"id":10}},"title":"International geophysics: Symposium on the hydrology of deltas","docAbstract":"

A Symposium on the Hydrology of Deltas was held in Bucharest, Romania, on May 6–9; it was followed by a field trip to the delta of the Danube River on May 10–14. The Symposium was organized by Unesco, with the collaboration of the Romanian Government and the support of the International Association of Scientific Hydrology (IASH).

The Romanian Government did an excellent job of arranging for airport reception, hotels in Bucharest, a meeting hall for the technical sessions, hospitality sessions, a full side program for wives of delegates, and hotels, meals, and transportation (bus, train, and boat) on the field trip. The Institute of Hydrotechnical Research of the Romanian Government provided most of the support.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO050i010p00556-01","usgsCitation":"Arnow, T., 1969, International geophysics: Symposium on the hydrology of deltas: Eos Science News, v. 50, no. 10, p. 556-556, https://doi.org/10.1029/EO050i010p00556-01.","productDescription":"1 p.","startPage":"556","endPage":"556","costCenters":[{"id":629,"text":"Water Resources Division","active":false,"usgs":true}],"links":[{"id":390627,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Romania","city":"Bucharest","otherGeospatial":"Danube River, Palace of the Republic","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 26.246337890625,\n 44.44750680513074\n ],\n [\n 26.180419921875,\n 44.47495104782301\n ],\n [\n 26.20513916015625,\n 44.49846441646551\n ],\n [\n 26.11724853515625,\n 44.51609322284931\n ],\n [\n 26.11724853515625,\n 44.55329208318496\n ],\n [\n 26.021118164062496,\n 44.545462718849755\n ],\n [\n 25.94970703125,\n 44.478870600803134\n ],\n [\n 25.974426269531246,\n 44.459270203098846\n ],\n [\n 25.9332275390625,\n 44.4377021634654\n ],\n [\n 25.960693359374996,\n 44.38669150215206\n ],\n [\n 26.1529541015625,\n 44.31795304574349\n ],\n [\n 26.1968994140625,\n 44.34938634389529\n ],\n [\n 26.169433593749996,\n 44.380802793578475\n ],\n [\n 26.22711181640625,\n 44.38669150215206\n ],\n [\n 26.246337890625,\n 44.44750680513074\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"50","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","contributors":{"authors":[{"text":"Arnow, Ted","contributorId":84733,"corporation":false,"usgs":true,"family":"Arnow","given":"Ted","affiliations":[],"preferred":false,"id":825379,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70223874,"text":"70223874 - 1969 - The use of Schlumberger and equatorial soundings in groundwater investigations near El Paso, Texas","interactions":[],"lastModifiedDate":"2021-09-10T19:47:11.730238","indexId":"70223874","displayToPublicDate":"1969-10-01T14:32:06","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1808,"text":"Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"The use of Schlumberger and equatorial soundings in groundwater investigations near El Paso, Texas","docAbstract":"

Electrical soundings using the symmetric AMNB Schlumberger and the bipole-dipole equatorial arrays were made along two profiles near El Paso, Texas, in support of a groundwater exploration program which included seismic refraction and gravity surveys. Electrode spacings (AB/2 or R) reaching 12,000 ft allowed exploration to depths of about 7000 ft. Geoelectrical information on the subsurface materials was augmented by sounding with the bilateral equatorial configuration and by transforming Schlumberger curves into dipole-polar sounding curves with formulas developed by Al'pin and by Tsekov. The bilateral equatorial sounding curves were found useful for detecting the direction of dip of highly resistive bedrocks whereas transformed sounding curves were used to evaluate the average longitudinal resistivity, and hence the depth, to the \"electric basement.\" A few of the Schlumberger sounding curves were either clearly or subtly distorted by nonhorizontal geologic structures. The interpretation of these sounding curves illustrates the requirement for careful analysis in processing electrical prospecting data obtained over complex geologic conditions. The interpretation of a combined Schlumberger-equatorial sounding curve, which did not agree with the preliminary interpretation of seismic refraction data, was confirmed to be correct by data from a test well drilled to a depth of 4363 ft. The application of electrical sounding data in the El Paso area furnished valuable information on the depth to fresh-water-saltwater interfaces and on the depth to highly resistive impervious bedrocks.

","language":"English","publisher":"Society of Exploration Geophysicists","doi":"10.1190/1.1440042","usgsCitation":"Zohdy, A.A., 1969, The use of Schlumberger and equatorial soundings in groundwater investigations near El Paso, Texas: Geophysics, v. 34, no. 5, p. 713-728, https://doi.org/10.1190/1.1440042.","productDescription":"16 p.","startPage":"713","endPage":"728","costCenters":[],"links":[{"id":389098,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","city":"El Paso","otherGeospatial":"Hueco Bolson","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -106.06063842773438,\n 31.675589707562505\n ],\n [\n -105.029296875,\n 31.675589707562505\n ],\n [\n -105.029296875,\n 32.00225320314841\n ],\n [\n -106.06063842773438,\n 32.00225320314841\n ],\n [\n -106.06063842773438,\n 31.675589707562505\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"34","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Zohdy, Adel A. R.","contributorId":61799,"corporation":false,"usgs":true,"family":"Zohdy","given":"Adel","email":"","middleInitial":"A. R.","affiliations":[],"preferred":false,"id":823050,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70223907,"text":"70223907 - 1969 - The U.S. Geological Survey's gravity program in California","interactions":[],"lastModifiedDate":"2021-09-13T17:45:08.832973","indexId":"70223907","displayToPublicDate":"1969-10-01T12:38:16","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7458,"text":"Eos Science News","active":true,"publicationSubtype":{"id":10}},"title":"The U.S. Geological Survey's gravity program in California","docAbstract":"

Since the 1963 gravity symposium, the U.S. Geological Survey has entered into a cooperative program with the California Division of Mines and Geology, the Army Map Service, and several universities for the purpose of completing a 5-mgal Bouguer gravity map of the entire State of California at a scale of 1:250,000 by 1970. The areal division of responsibility within the program is shown on a map of California by Chapman (p. 542).

It is evident from a plot of existing stations that considerably more data are required in the eastern Mojave Desert located in the southeastern corner of the state, and in the Sierra Nevada north of Lake Tahoe. Additional fill-in work is needed in nearly all parts of the state. The data requirements vary for a 5-mgal contour map depending on the local complexity of the gravity field; but in general, we are obtaining gravity stations at an interval of about 3 km along roads, trails, and rivers, and 5 to 8 km between these access routes by cross-country jeep, horseback, or helicopter if necessary. About 6000 new stations were obtained in California by the Geological Survey during 1968 and we expect to obtain about 3000 more in 1969.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO050i010p00543","usgsCitation":"Oliver, H., 1969, The U.S. Geological Survey's gravity program in California: Eos Science News, v. 50, no. 10, p. 543-545, https://doi.org/10.1029/EO050i010p00543.","productDescription":"3 p.","startPage":"543","endPage":"545","costCenters":[],"links":[{"id":389162,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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\"}}]}","volume":"50","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","contributors":{"authors":[{"text":"Oliver, Howard W.","contributorId":78704,"corporation":false,"usgs":true,"family":"Oliver","given":"Howard W.","affiliations":[],"preferred":false,"id":823228,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70223906,"text":"70223906 - 1969 - Progress on a gravity map of Alaska","interactions":[],"lastModifiedDate":"2021-09-13T17:34:22.498241","indexId":"70223906","displayToPublicDate":"1969-10-01T12:27:24","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7458,"text":"Eos Science News","active":true,"publicationSubtype":{"id":10}},"title":"Progress on a gravity map of Alaska","docAbstract":"

The U.S. Geological Survey began gravity surveys in Alaska ten years ago with local surveys in the Copper River and Tanana Basins. Shortly before the 1963 AGU gravity symposium [Barnes, 1965], the emphasis shifted from local surveys to the preparation of a reconnaissance gravity map of the whole state with a 10-mgal contour interval on a scale of 1:2,500,000, which would be similar to the gravity map of the United States [Woollard and Joesting, 1964]. Data have now been obtained in approximately three-fourths of the state, but there are large variations in both station density and geologic usefulness of the coverage. The amount of coverage is primarily influenced by the distribution of water bodies because more than three-fourths of the stations have been obtained by riverboats, small skiffs, and floatplanes.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO050i010p00550","usgsCitation":"Barnes, D., 1969, Progress on a gravity map of Alaska: Eos Science News, v. 50, no. 10, p. 550-552, https://doi.org/10.1029/EO050i010p00550.","productDescription":"3 p.","startPage":"550","endPage":"552","costCenters":[],"links":[{"id":389161,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","volume":"50","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","contributors":{"authors":[{"text":"Barnes, David F.","contributorId":72787,"corporation":false,"usgs":true,"family":"Barnes","given":"David F.","affiliations":[],"preferred":false,"id":823227,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70224621,"text":"70224621 - 1969 - The structure and tectonic history of the eastern Aleutian Trench","interactions":[],"lastModifiedDate":"2021-09-30T17:34:49.906947","indexId":"70224621","displayToPublicDate":"1969-10-01T12:24:36","publicationYear":"1969","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":"The structure and tectonic history of the eastern Aleutian Trench","docAbstract":"

The tectonic character of the eastern Aleutian Trench and some major events in its geologic history can be estimated from nine continuous seismic reflection records. A section of pre-trench, deep oceanic sediments rests on the down-warped crust that forms the trench. Nearly horizontal undeformed strata that unconformably overlie this deep oceanic section partially fill the trench. The trench fill is thickest near present sediment sources. A Pliocene age for development of the eastern Aleutian Trench is estimated from the thickness of deep oceanic sediment that accumulated after the trench began to fill. The eastern Aleutian Trench thus appears younger than the central Aleutian Trench—a relation which helps to explain the distribution of sediment along the two trench segments.

Depression of the eastern Aleutian Trench diminished or virtually ended soon after the trench began to fill. The undeformed fill provides no evidence for a large thrust fault zone at the base of the continental slope. Nor is there any evidence that oceanic sediments have disappeared beneath the continents in late Tertiary time. These observations are difficult to reconcile with the simple model of a continental margin advanced in the hypothesis of plate tectonics.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1969)80[1889:TSATHO]2.0.CO;2","usgsCitation":"von Huene, R.E., and Shor, G.G., 1969, The structure and tectonic history of the eastern Aleutian Trench: Geological Society of America Bulletin, v. 80, no. 10, p. 1889-1902, https://doi.org/10.1130/0016-7606(1969)80[1889:TSATHO]2.0.CO;2.","productDescription":"16 p.","startPage":"1889","endPage":"1902","costCenters":[],"links":[{"id":390048,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Aleutian Trench, Gulf of Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -169.3212890625,\n 52.855864177853974\n ],\n [\n -169.0576171875,\n 52.07950600379697\n ],\n [\n -153.80859375,\n 55.89995614406812\n ],\n [\n -144.580078125,\n 60.673178565817715\n ],\n [\n -150.205078125,\n 61.75233128411639\n ],\n [\n -169.365234375,\n 53.85252660044951\n ],\n [\n -169.3212890625,\n 52.855864177853974\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"80","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"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":7065,"text":"USGS emeritus","active":true,"usgs":false},{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":false,"id":824385,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shor, George G. Jr.","contributorId":266140,"corporation":false,"usgs":false,"family":"Shor","given":"George","suffix":"Jr.","email":"","middleInitial":"G.","affiliations":[{"id":16196,"text":"Scripps Institution of Oceanography, La Jolla, CA","active":true,"usgs":false}],"preferred":false,"id":824386,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70224294,"text":"70224294 - 1969 - Significance of lineation and minor folds near major thrust faults in the southern Appalachians and the British and Norwegian Caledonides","interactions":[],"lastModifiedDate":"2021-09-20T17:40:55.07281","indexId":"70224294","displayToPublicDate":"1969-10-01T12:10:33","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1783,"text":"Geological Magazine","active":true,"publicationSubtype":{"id":10}},"title":"Significance of lineation and minor folds near major thrust faults in the southern Appalachians and the British and Norwegian Caledonides","docAbstract":"

The Blue Ridge thrust sheet is one of the principal thrust masses of metamorphic rocks in the southern Appalachians. A broad zone of sheared and retrogressively metamorphosed rocks near the sole of the thrust sheet around the Grandfather Mountain window displays numerous small tight or isoclinal folds having axes subparallel to an intense penetrative cataclastic a lineation and axial planes parallel to foliation in the thrust sheet. These folds seem to have formed by tightening, flattening, and passive rotation of earlier more open folds originally formed perpendicular to the direction of transport. The style and orientation of these folds closely resemble those of analogous structures in thrust masses of crystalline rocks in the Caledonian orogenic belt in Scotland and Norway, suggesting that the structures of both regions may have similar origins.

","language":"English","publisher":"Cambridge University Press","doi":"10.1017/S0016756800058805","usgsCitation":"Bryant, B., and Reed, J.C., 1969, Significance of lineation and minor folds near major thrust faults in the southern Appalachians and the British and Norwegian Caledonides: Geological Magazine, v. 106, no. 5, p. 412-429, https://doi.org/10.1017/S0016756800058805.","productDescription":"18 p.","startPage":"412","endPage":"429","costCenters":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"links":[{"id":389482,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Norway, United Kingdom, United States","state":"Alabama, Georgia, Kentucky, Maryland, North Carolina, Scotland, South Carolina, Tennessee, Virginia, West Virginia","otherGeospatial":"Appalachian Mountains, Caledonides","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.27783203125,\n 39.715638134796336\n ],\n [\n -79.89257812499999,\n 39.69873414348139\n ],\n [\n -80.826416015625,\n 38.28131307922966\n ],\n [\n -84.42993164062499,\n 36.491973470593685\n ],\n [\n -86.583251953125,\n 33.23868752757414\n ],\n [\n -86.011962890625,\n 32.95336814579932\n ],\n [\n -83.243408203125,\n 33.04550781490999\n ],\n [\n -82.265625,\n 35.18278813800229\n ],\n [\n -79.8046875,\n 37.18657859524883\n ],\n [\n -78.409423828125,\n 38.16911413556086\n ],\n [\n -77.27783203125,\n 39.715638134796336\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 21.533203125,\n 69.30279408245205\n ],\n [\n 22.2802734375,\n 68.75231494434473\n ],\n [\n 23.203125,\n 68.5924865825295\n ],\n [\n 25.0927734375,\n 68.5443150407769\n ],\n [\n 26.1474609375,\n 69.61120561869633\n ],\n [\n 28.872070312500004,\n 70.1403642720717\n ],\n [\n 28.9599609375,\n 71.25848024041382\n ],\n [\n 24.169921875,\n 71.27259471233448\n ],\n [\n 17.578125,\n 70.09552886456429\n ],\n [\n 12.041015625,\n 67.941650035336\n ],\n [\n 12.8759765625,\n 67.62595438857817\n ],\n [\n 14.6337890625,\n 68.18788950166663\n ],\n [\n 8.96484375,\n 64.05297838071347\n ],\n [\n 4.5263671875,\n 62.32920841458002\n ],\n [\n -1.6259765625,\n 60.84491057364912\n ],\n [\n -7.690429687499999,\n 58.17070248348609\n ],\n [\n -7.9541015625,\n 56.8729956637964\n ],\n [\n -6.8994140625,\n 56.897003921272606\n ],\n [\n -7.3828125,\n 56.29215668507645\n ],\n [\n -6.591796875,\n 55.50374985927514\n ],\n [\n -5.5810546875,\n 55.07836723201515\n ],\n [\n -4.833984374999999,\n 54.41892996865827\n ],\n [\n -1.494140625,\n 55.801280971180454\n ],\n [\n -2.63671875,\n 56.19448087726972\n ],\n [\n -1.4501953125,\n 57.51582286553883\n ],\n [\n -1.8017578124999998,\n 57.75107598132104\n ],\n [\n -3.69140625,\n 57.79794388498275\n ],\n [\n -0.3515625,\n 60.43554230669233\n ],\n [\n 4.350585937499999,\n 61.81466389468391\n ],\n [\n 5.053710937499999,\n 58.56252272853734\n ],\n [\n 7.03125,\n 57.72761921621492\n ],\n [\n 8.7890625,\n 58.12431960569374\n ],\n [\n 10.1953125,\n 58.95000823335702\n ],\n [\n 11.513671874999998,\n 58.95000823335702\n ],\n [\n 12.65625,\n 60.4788788301667\n ],\n [\n 12.83203125,\n 61.2913492826376\n ],\n [\n 12.568359375,\n 63.82128765261384\n ],\n [\n 14.326171874999998,\n 63.95667333648766\n ],\n [\n 14.6337890625,\n 65.23830662451157\n ],\n [\n 14.765625,\n 66.03587344492607\n ],\n [\n 15.908203125,\n 66.37275500247455\n ],\n [\n 16.611328125,\n 67.1016555307692\n ],\n [\n 16.69921875,\n 67.69277095059344\n ],\n [\n 18.1494140625,\n 67.92514047803861\n ],\n [\n 18.369140624999996,\n 68.43151284537514\n ],\n [\n 20.214843749999996,\n 68.26938680456564\n ],\n [\n 20.56640625,\n 68.95839084822076\n ],\n [\n 21.3134765625,\n 68.97416358340674\n ],\n [\n 21.533203125,\n 69.30279408245205\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"106","issue":"5","noUsgsAuthors":false,"publicationDate":"2009-05-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Bryant, Bruce bbryant@usgs.gov","contributorId":1355,"corporation":false,"usgs":true,"family":"Bryant","given":"Bruce","email":"bbryant@usgs.gov","affiliations":[],"preferred":false,"id":823487,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reed, John C. Jr.","contributorId":223980,"corporation":false,"usgs":false,"family":"Reed","given":"John","suffix":"Jr.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":823488,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70223396,"text":"70223396 - 1969 - Rheology of basalt in the melting range","interactions":[],"lastModifiedDate":"2021-08-25T16:43:43.823067","indexId":"70223396","displayToPublicDate":"1969-10-01T11:39:17","publicationYear":"1969","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":"Rheology of basalt in the melting range","docAbstract":"

Experimental data have been obtained for viscosities of tholeiite melts at temperatures from 1300 to 1120 °Cat 1 atm, using a concentric cylinder viscometer. The apparent viscosity increases more than two orders of magnitude between 1200 and 1120 °C (0–25 per cent crystallization) for shear rates of about 10 sec-1 and even more for lower shear rates. Non-Newtonian behaviour of ‘pseudo-plastic type’ becomes extremely pronounced at temperatures below about 1130 °C. At these temperatures, differences of less than 5 °C can produce changes in apparent viscosity amounting to orders of magnitude. These observations have led to the conclusion that the heat of deformation must itself influence rheological behaviour in the melting range. An equation for thermal energy balances and their rates of change is constructed and placed in a non-dimensional form that has been given published solutions by I. J. Gruntfest (1963) relating the shear stress, rate of strain, and temperature through the temperature dependence of viscosity. The results show that in an adiabatic system the heating rate increases with time so that the temperature eventually runs out of bounds, a process termed ‘thermal feedback’ by Gruntfest. A hypothesis of shear melting is derived on the basis of a simplified viscosity function extrapolated to the solidus temperature. The hypothesis is applied to magma generation in the earth on the basis of dimensional arguments. It is also suggested that thermal instabilities give rise to a sort of viscous failure responsible for deep-focus earthquakes, and that the two phenomena have the same cause relating ultimately to a gravitational energy source.

","language":"English","publisher":"Oxford University Press","doi":"10.1093/petrology/10.3.510","usgsCitation":"Shaw, H.R., 1969, Rheology of basalt in the melting range: Journal of Petrology, v. 10, no. 3, p. 510-535, https://doi.org/10.1093/petrology/10.3.510.","productDescription":"26 p.","startPage":"510","endPage":"535","costCenters":[],"links":[{"id":388488,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Shaw, Herbert R.","contributorId":29813,"corporation":false,"usgs":true,"family":"Shaw","given":"Herbert","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":821938,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70223395,"text":"70223395 - 1969 - Minor-element and revised major-element contents of some Mediterranean pantellerites and comendites","interactions":[],"lastModifiedDate":"2021-08-25T16:36:28.594293","indexId":"70223395","displayToPublicDate":"1969-10-01T11:29:46","publicationYear":"1969","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":"Minor-element and revised major-element contents of some Mediterranean pantellerites and comendites","docAbstract":"

Optical emission spectrographic analysis of three pantellerites from Pantelleria and two comendites from Sardinia show high concentrations of B, Be, Ga, La, Mo, Nb, Sn, Y, Yb, and Zt and low contents of Ba, Co, Cr, Ni, Sr, and V. Minor-element trends of these specimens are very similar to those of pantellerites from southern Nevada and New Zealand and other peralkaline silicic rocks from various localities. Fluorine contents of the Pantellerian specimens range from 0.19 to 0.32 per cent by weight resulting in abnormally high Cl to F ratios. New analyses for MgO, Na2O, and K2O are almost identical with the values obtained by Zies. Revised major-element compositions and calculated glass-phase compositions for the three Pantellerian specimens are given.

","language":"English","publisher":"Oxford University Press","doi":"10.1093/petrology/10.3.502","usgsCitation":"Noble, D.C., and Haffty, J., 1969, Minor-element and revised major-element contents of some Mediterranean pantellerites and comendites: Journal of Petrology, v. 10, no. 3, p. 502-509, https://doi.org/10.1093/petrology/10.3.502.","productDescription":"8 p.","startPage":"502","endPage":"509","costCenters":[],"links":[{"id":388487,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Italy","otherGeospatial":"Pantelleria, Sardinia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 7.745361328125,\n 38.805470223177466\n ],\n [\n 10.1953125,\n 38.805470223177466\n ],\n [\n 10.1953125,\n 41.27780646738183\n ],\n [\n 7.745361328125,\n 41.27780646738183\n ],\n [\n 7.745361328125,\n 38.805470223177466\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 11.85150146484375,\n 36.71687068791304\n ],\n [\n 12.1014404296875,\n 36.71687068791304\n ],\n [\n 12.1014404296875,\n 36.86424015502008\n ],\n [\n 11.85150146484375,\n 36.86424015502008\n ],\n [\n 11.85150146484375,\n 36.71687068791304\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"10","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Noble, Donald C.","contributorId":64676,"corporation":false,"usgs":true,"family":"Noble","given":"Donald","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":821936,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haffty, Joseph","contributorId":79450,"corporation":false,"usgs":true,"family":"Haffty","given":"Joseph","email":"","affiliations":[],"preferred":false,"id":821937,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70224250,"text":"70224250 - 1969 - New tectonic map of North America","interactions":[],"lastModifiedDate":"2021-09-15T16:37:21.981516","indexId":"70224250","displayToPublicDate":"1969-10-01T11:24:22","publicationYear":"1969","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":"New tectonic map of North America","docAbstract":"

No abstract available.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1969)80[2039:NTMONA]2.0.CO;2","usgsCitation":"King, P., 1969, New tectonic map of North America: Geological Society of America Bulletin, v. 80, no. 10, p. 2039-2041, https://doi.org/10.1130/0016-7606(1969)80[2039:NTMONA]2.0.CO;2.","productDescription":"3 p.","startPage":"2039","endPage":"2041","costCenters":[],"links":[{"id":389271,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"North America","volume":"80","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"King, Philip B.","contributorId":34580,"corporation":false,"usgs":true,"family":"King","given":"Philip B.","affiliations":[],"preferred":false,"id":823356,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70226142,"text":"70226142 - 1969 - The U.S. Geological Survey's gravity program in the Rocky Mountain and Basin Range areas","interactions":[],"lastModifiedDate":"2021-11-12T16:49:35.083596","indexId":"70226142","displayToPublicDate":"1969-10-01T10:35:56","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"The U.S. Geological Survey's gravity program in the Rocky Mountain and Basin Range areas","docAbstract":"

Most of the gravity surveys of the U.S. Geological Survey have been support programs in connection with regional geologic structural studies, ground-water investigations, and heavy-metals exploration. Many of the studies were undertaken in conjunction with geological mapping and mineral investigations by the Survey's project geologists. Gravity data often complement aeromagnetic surveys to identify the sources of potential-field anomalies; other gravity data have been used to supplement high-resolution seismic and electrical investigations [Mattick, 1967]. Geochemical follow-up has been fruitful in western Montana [ Mudge et al, 1967].

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO050i010p00529","usgsCitation":"Kleinkopf, M.D., and Peterson, D.L., 1969, The U.S. Geological Survey's gravity program in the Rocky Mountain and Basin Range areas: Eos, Transactions, American Geophysical Union, v. 50, no. 10, p. 529-531, https://doi.org/10.1029/EO050i010p00529.","productDescription":"3 p.","startPage":"529","endPage":"531","costCenters":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"links":[{"id":391618,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming","otherGeospatial":"Basin Range, Rocky Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -117.0703125,\n 49.023461463214126\n ],\n [\n -117.081298828125,\n 46.05036097561633\n ],\n [\n -116.87255859374999,\n 45.82114340079471\n ],\n [\n -116.6748046875,\n 45.75219336063106\n ],\n [\n -116.5869140625,\n 45.62940492064501\n ],\n [\n -117.32299804687499,\n 44.44162421758805\n ],\n [\n -117.2900390625,\n 44.26093725039923\n ],\n [\n -117.00439453125,\n 44.11914151643737\n ],\n [\n -117.037353515625,\n 43.858296779161826\n ],\n [\n -117.02636718749999,\n 42.01665183556825\n ],\n [\n -120.02563476562501,\n 42.00848901572399\n ],\n [\n -120.047607421875,\n 38.98503278695909\n ],\n [\n -114.730224609375,\n 35.02999636902566\n ],\n [\n -114.70825195312501,\n 34.84085858477277\n ],\n [\n -114.466552734375,\n 34.44315867450577\n ],\n [\n -114.2138671875,\n 34.30714385628804\n ],\n [\n -114.510498046875,\n 34.14363482031264\n ],\n [\n -114.58740234375,\n 33.94335994657882\n ],\n [\n -114.620361328125,\n 33.60546961227188\n ],\n [\n -114.80712890625,\n 33.43144133557529\n ],\n [\n -114.81811523437501,\n 33.08233672856376\n ],\n [\n -114.54345703125,\n 32.89803818160521\n ],\n [\n -114.76318359375,\n 32.7503226078097\n ],\n [\n -114.9169921875,\n 32.52828936482526\n ],\n [\n -111.09374999999999,\n 31.297327991404266\n ],\n [\n -108.1494140625,\n 31.259769987394286\n ],\n [\n -108.17138671875,\n 31.728167146023935\n ],\n [\n -106.435546875,\n 31.70947636001935\n ],\n [\n -106.435546875,\n 31.970803930433096\n ],\n [\n -102.9638671875,\n 31.952162238024975\n ],\n [\n -102.98583984374999,\n 36.932330061503144\n ],\n [\n -101.9970703125,\n 36.932330061503144\n ],\n [\n -101.9970703125,\n 41.062786068733026\n ],\n [\n -103.99658203125,\n 41.02964338716638\n ],\n [\n -104.0185546875,\n 49.023461463214126\n ],\n [\n -117.0703125,\n 49.023461463214126\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"50","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","contributors":{"authors":[{"text":"Kleinkopf, M. Dean","contributorId":37723,"corporation":false,"usgs":true,"family":"Kleinkopf","given":"M.","email":"","middleInitial":"Dean","affiliations":[],"preferred":false,"id":826630,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peterson, Donald L.","contributorId":28597,"corporation":false,"usgs":true,"family":"Peterson","given":"Donald","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":826631,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70223885,"text":"70223885 - 1969 - Standardization of gravimeter calibrations in the geological survey","interactions":[],"lastModifiedDate":"2021-09-13T12:47:59.891523","indexId":"70223885","displayToPublicDate":"1969-10-01T07:13:04","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7458,"text":"Eos Science News","active":true,"publicationSubtype":{"id":10}},"title":"Standardization of gravimeter calibrations in the geological survey","docAbstract":"

The calibration of gravimeters has long been primarily the concern of geodesists involved in measuring large gravity differences, but recent developments suggest that the precision and stability of gravimeter calibrations may have greater geologic importance in the future. First, the use of high-speed computers and an increasing variety of supplemental data now make possible the geologic interpretation of gravity anomalies so small that they would not have been noticed in surveys made ten years ago. The kind of gravity interpretation that identifies small reefs and local accumulations of petroleum [McCulloh, 1967] often requires local increases in station density and the assurance that the calibration of meters used in all parts of a survey are compatible. Second, temporal changes of gravity have already been measured in connection with earthquakes [Barnes, 1966], volcanic eruptions [Iida et al, 1952], and the movement of ice caps [Behrendt, 1967]; they are now being considered for several other types of geologic processes.

","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO050i010p00526","usgsCitation":"Barnes, D., Oliver, H., and Robbins, S.L., 1969, Standardization of gravimeter calibrations in the geological survey: Eos Science News, v. 50, no. 10, p. 526-527, https://doi.org/10.1029/EO050i010p00526.","productDescription":"2 p.","startPage":"526","endPage":"527","costCenters":[],"links":[{"id":389138,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska, Arizona, California, Colorado, Oregon, Washington","city":"Anchorage, Denver, Eugene, Fairbanks, Fresno, Los Angeles, Menlo Park, Merced, Palm Springs, Port Angeles, Portland, Red Bluff, Safford","otherGeospatial":"Crater Lake, Heliograph Point, Lookout Mountain, Mount Evans, Mount Hamilton, Mount Hood, Mount Lassen, Mount Pinos, Mount San Jacinto, Murphy Dome, Obstruction Peak, Sentinel Dome, Skeggs Point, Ski Bowl 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L.","contributorId":68291,"corporation":false,"usgs":true,"family":"Robbins","given":"Stephen","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":823084,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70160650,"text":"70160650 - 1969 - Pituitary activation by bacterial endotoxins in the rainbow trout (Salmo gairdneri)","interactions":[],"lastModifiedDate":"2025-03-03T16:20:45.780444","indexId":"70160650","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2192,"text":"Journal of Bacteriology","active":true,"publicationSubtype":{"id":10}},"title":"Pituitary activation by bacterial endotoxins in the rainbow trout (Salmo gairdneri)","docAbstract":"

Endotoxins from Escherichia coli and Aeromonas salmonicida caused marked cortisol production in the rainbow trout (Salmo gairdneri).

","language":"English","publisher":"American Society for Microbiology","doi":"10.1128/jb.100.1.542-543.1969","usgsCitation":"Wedemeyer, G., 1969, Pituitary activation by bacterial endotoxins in the rainbow trout (Salmo gairdneri): Journal of Bacteriology, v. 100, no. 1, p. 542-543, https://doi.org/10.1128/jb.100.1.542-543.1969.","productDescription":"2 p.","startPage":"542","endPage":"543","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":488428,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1128/jb.100.1.542-543.1969","text":"Publisher Index Page"},{"id":312919,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"100","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56826b3ae4b0a04ef4925b15","contributors":{"authors":[{"text":"Wedemeyer, Gary gwedemeyer@usgs.gov","contributorId":5504,"corporation":false,"usgs":true,"family":"Wedemeyer","given":"Gary","email":"gwedemeyer@usgs.gov","affiliations":[],"preferred":true,"id":929367,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70230522,"text":"70230522 - 1969 - Some aspects of the effects of the quantity and quality of water on biological communities in Everglades National Park","interactions":[],"lastModifiedDate":"2025-04-17T14:39:31.390766","indexId":"70230522","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":375,"text":"Open-File Report","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"FL 69-007","displayTitle":"Some Aspects of the Effects of the Quantity and Quality of Water on Biological Communities in Everglades National Park","title":"Some aspects of the effects of the quantity and quality of water on biological communities in Everglades National Park","docAbstract":"

No abstract available.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/70230522","collaboration":"Prepared in cooperation with U.S. National Park Service","usgsCitation":"Kolipinski, M.C., and Higer, A.L., 1969, Some aspects of the effects of the quantity and quality of water on biological communities in Everglades National Park: Open-File Report FL 69-007, 97 p., https://doi.org/10.3133/70230522.","productDescription":"97 p.","numberOfPages":"97","costCenters":[{"id":27821,"text":"Caribbean-Florida Water Science Center","active":true,"usgs":true}],"links":[{"id":398799,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70230522/coverthb.jpg"},{"id":398800,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70230522/ofr-fl-69007.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"OFR FL 69-007"}],"country":"United States","state":"Florida","otherGeospatial":"Everglades National Park","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -81.34452175282718,\n 25.92032487251747\n ],\n [\n -81.34452175282718,\n 25.107313769279898\n ],\n [\n -80.46704817507609,\n 25.107313769279898\n ],\n [\n -80.46704817507609,\n 25.92032487251747\n ],\n [\n -81.34452175282718,\n 25.92032487251747\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"

Caribbean-Florida Water Science Center
U.S. Geological Survey
3321 College Avenue
Davie, FL 33314

Contact Pubs Warehouse

","publishedDate":"1969-10-01","noUsgsAuthors":false,"publicationDate":"1969-10-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Kolipinski, Milton C.","contributorId":95316,"corporation":false,"usgs":true,"family":"Kolipinski","given":"Milton","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":840642,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Higer, Aaron L.","contributorId":52163,"corporation":false,"usgs":true,"family":"Higer","given":"Aaron","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":840643,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1001477,"text":"1001477 - 1969 - A comparison of methods used to obtain age ratios of snow and Canada geese","interactions":[],"lastModifiedDate":"2025-02-14T19:54:34.886817","indexId":"1001477","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"A comparison of methods used to obtain age ratios of snow and Canada geese","docAbstract":"

The validity of group counts, cannon-net catches, and hunter-bag checks for estimating productivity of lesser snow geese (Anser caerulescens caerulescens) and small Canada geese (Branta canadensis hutchinsii-parvipes complex) was studied at Sand Lake National Wildlife Refuge during the falls of 1965 and 1966. Age ratios of snow geese obtained from net-trapped samples were significantly higher (P < 0.01) than from group counts at the same site. Immature snow geese were shot in a significantly greater (P < 0.01) proportion than they existed in the population as determined by group counts. Cannon-net catches and hunter-bag checks of snow and Canada geese yielded age ratios which were biased because of behavioral characteristics of the geese. Immatures of both species were less wary of trap equipment and immature snow geese were more vulnerable to the gun than adults. It was believed that age ratios from group counts of snow geese were more representative of the population than those from net catches and hunter-bag checks. Sex ratios of net-trapped geese showed a preponderance of males for adult Canada and adult and immature snow geese, whereas females were predominant in the immature segment of Canada geese. Hunter selectivity of blue- or white-phase snow geese was not observed at Sand Lake Refuge. Differential vulnerability to hunting between snow and Canada geese resulted from differences m feeding-flight behavior.

","language":"English","publisher":"Wiley","doi":"10.2307/3799330","usgsCitation":"Higgins, K., Linder, R.L., and Springer, P.F., 1969, A comparison of methods used to obtain age ratios of snow and Canada geese: Journal of Wildlife Management, v. 33, no. 4, p. 949-956, https://doi.org/10.2307/3799330.","productDescription":"8 p.","startPage":"949","endPage":"956","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133718,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Dakota","otherGeospatial":"Sand Lake National Wildlife Refuge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -98.27760434034772,\n 45.83397560101784\n ],\n [\n -98.27760434034772,\n 45.720519376360016\n ],\n [\n -98.20285885238978,\n 45.720519376360016\n ],\n [\n -98.20285885238978,\n 45.83397560101784\n ],\n [\n -98.27760434034772,\n 45.83397560101784\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"33","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b27e4b07f02db6b0f14","contributors":{"authors":[{"text":"Higgins, Kenneth F.","contributorId":272584,"corporation":false,"usgs":false,"family":"Higgins","given":"Kenneth F.","affiliations":[{"id":5089,"text":"South Dakota State University","active":true,"usgs":false}],"preferred":false,"id":311101,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Linder, R. L.","contributorId":25907,"corporation":false,"usgs":true,"family":"Linder","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":311100,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Springer, P. F.","contributorId":56590,"corporation":false,"usgs":false,"family":"Springer","given":"P.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":311102,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1001496,"text":"1001496 - 1969 - A cable-chain device for locating duck nests","interactions":[],"lastModifiedDate":"2025-02-14T17:17:14.264955","indexId":"1001496","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"A cable-chain device for locating duck nests","docAbstract":"

A cable-chain device towed between two vehicles was developed for locating occupied duck nests in brushy, herbaceous, and grassy cover types. Twenty-three of 29 previously located gadwall (Anas strepera) and blue-winged teal (A. discors) hens were flushed from their nests with the drag for an efficiency of 79 percent. Eighty acres of nesting cover can be searched in 4-6 hours by the method described.

","language":"English","publisher":"Wiley","doi":"10.2307/3799339","usgsCitation":"Higgins, K., Kirsch, L.M., and Ball, I., 1969, A cable-chain device for locating duck nests: Journal of Wildlife Management, v. 33, no. 4, p. 1009-1011, https://doi.org/10.2307/3799339.","productDescription":"3 p.","startPage":"1009","endPage":"1011","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":128970,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b28e4b07f02db6b10d6","contributors":{"authors":[{"text":"Higgins, Kenneth F.","contributorId":272584,"corporation":false,"usgs":false,"family":"Higgins","given":"Kenneth F.","affiliations":[{"id":5089,"text":"South Dakota State University","active":true,"usgs":false}],"preferred":false,"id":311133,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirsch, Leo M.","contributorId":99223,"corporation":false,"usgs":true,"family":"Kirsch","given":"Leo","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":311132,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ball, I.J. Jr.","contributorId":69503,"corporation":false,"usgs":true,"family":"Ball","given":"I.J.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":311134,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5220657,"text":"5220657 - 1969 - Establishing hunting regulations and allowable harvest of mallards in the United States","interactions":[],"lastModifiedDate":"2025-02-14T20:04:25.946067","indexId":"5220657","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Establishing hunting regulations and allowable harvest of mallards in the United States","docAbstract":"

As a major part of establishing hunting regulations each year in the United States, data for the mallard (Anas platyrhynchos) are examined extensively to estimate the effect of various harvest strategies on the breeding population the following spring. This requires estimates of the breeding-population level and of the production, harvest, and mortality rates. Predictions made at the time hunting regulations are established have been in general agreement with more reliable estimates made after the hunting season when data from banding, kill, and wing surveys are available.

","language":"English","publisher":"Wiley","doi":"10.2307/3799316","usgsCitation":"Geis, A.D., Martinson, R.K., and Anderson, D., 1969, Establishing hunting regulations and allowable harvest of mallards in the United States: Journal of Wildlife Management, v. 33, no. 4, p. 848-859, https://doi.org/10.2307/3799316.","productDescription":"12 p.","startPage":"848","endPage":"859","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":194310,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ee4b07f02db5fde7d","contributors":{"authors":[{"text":"Geis, A. D.","contributorId":72885,"corporation":false,"usgs":true,"family":"Geis","given":"A.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":332181,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martinson, R. K.","contributorId":106983,"corporation":false,"usgs":true,"family":"Martinson","given":"R.","middleInitial":"K.","affiliations":[],"preferred":false,"id":332182,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, David R.","contributorId":8413,"corporation":false,"usgs":true,"family":"Anderson","given":"David R.","affiliations":[],"preferred":false,"id":332180,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5220658,"text":"5220658 - 1969 - Effect of restrictive hunting regulations on canvasbacks and redhead harvest rates and survival","interactions":[],"lastModifiedDate":"2025-02-14T19:58:19.566882","indexId":"5220658","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Effect of restrictive hunting regulations on canvasbacks and redhead harvest rates and survival","docAbstract":"

Because of low population levels, there were especially restrictive hunting regulations between 1958-1965, including complete closures during the 1960-1963 seasons, for canvasback (Aythya valimeria) and redhead (A. americana) ducks. Banding data from 1952 through 1965 indicated that restrictive regulations reduced both harvest and annual mortality rates. During the period with very restrictive regulations, annual mortality-rate estimates ranged from 14 to 21 percent, much lower than before this period when estimates were 50 percent or higher.

","language":"English","publisher":"Wiley","doi":"10.2307/3799317","usgsCitation":"Geis, A.D., and Crissey, W.F., 1969, Effect of restrictive hunting regulations on canvasbacks and redhead harvest rates and survival: Journal of Wildlife Management, v. 33, no. 4, p. 860-866, https://doi.org/10.2307/3799317.","productDescription":"7 p.","startPage":"860","endPage":"866","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":198312,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4be4b07f02db625514","contributors":{"authors":[{"text":"Geis, A. D.","contributorId":72885,"corporation":false,"usgs":true,"family":"Geis","given":"A.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":332184,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Crissey, Walter F.","contributorId":6506,"corporation":false,"usgs":true,"family":"Crissey","given":"Walter","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":332183,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1001690,"text":"1001690 - 1969 - Waterfowl production in relation to grazing","interactions":[],"lastModifiedDate":"2025-02-19T16:33:22.520366","indexId":"1001690","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Waterfowl production in relation to grazing","docAbstract":"A 4-year production study of upland nesting waterfowl on the Missouri Coteau area of North Dakota showed that pair numbers, nesting densities and nest success were generally reduced by grazing. It is suggested that cover removal such as regular grazing and mowing be discontinued on areas managed primarily for waterfowl production and that management practices which create dense rank cover be substituted.","language":"English","publisher":"Wiley","doi":"10.2307/3799313","usgsCitation":"Kirsch, L., 1969, Waterfowl production in relation to grazing: Journal of Wildlife Management, v. 33, no. 4, p. 821-828, https://doi.org/10.2307/3799313.","productDescription":"8 p.","startPage":"821","endPage":"828","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":129257,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North Dakota","county":"Stutsman County","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-99.2669,47.3268],[-98.8466,47.327],[-98.8392,47.327],[-98.8232,47.3272],[-98.8152,47.3271],[-98.4991,47.327],[-98.467,47.3266],[-98.4677,47.2402],[-98.4685,46.9788],[-98.4412,46.9789],[-98.4396,46.6296],[-98.7894,46.6294],[-99.0379,46.6309],[-99.1616,46.6317],[-99.4122,46.6316],[-99.4498,46.6319],[-99.4477,46.8044],[-99.4476,46.9788],[-99.4821,46.9795],[-99.4824,47.0089],[-99.4822,47.0162],[-99.4821,47.0249],[-99.4826,47.0396],[-99.4827,47.1558],[-99.4801,47.3267],[-99.2669,47.3268]]]},\"properties\":{\"name\":\"Stutsman\",\"state\":\"ND\"}}]}","volume":"33","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e48b3e4b07f02db532444","contributors":{"authors":[{"text":"Kirsch, L.M.","contributorId":43701,"corporation":false,"usgs":true,"family":"Kirsch","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":311521,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1001532,"text":"1001532 - 1969 - Bursal depths of lesser snow and small Canada geese","interactions":[],"lastModifiedDate":"2025-02-14T19:50:19.00993","indexId":"1001532","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Bursal depths of lesser snow and small Canada geese","docAbstract":"

Bursa of Fabricius depths of 88 lesser snow geese (Anser c. caerulescens) and 69 small Canada geese (Branta canadensis hutchinsii/parvipes complex) were measured. Bursal depths were unreliable indicators of age-classes of lesser snow geese and small Canada geese; previously, the same had been found to be true for large Canada geese (B. c. interior). Regression in size or closure of the bursa first occurred at 17-20 months of age (yearlings) in lesser snow geese and small Canada geese, but at 29-32 months of age (2-year-olds) in large Canada geese.

","language":"English","publisher":"Wiley","doi":"10.2307/3799338","usgsCitation":"Higgins, K., 1969, Bursal depths of lesser snow and small Canada geese: Journal of Wildlife Management, v. 33, no. 4, p. 1006-1008, https://doi.org/10.2307/3799338.","productDescription":"3 p.","startPage":"1006","endPage":"1008","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":128954,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Dakota","otherGeospatial":"Sand Lake National Wildlife Refuge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -98.27760434034772,\n 45.83397560101784\n ],\n [\n -98.27760434034772,\n 45.720519376360016\n ],\n [\n -98.20285885238978,\n 45.720519376360016\n ],\n [\n -98.20285885238978,\n 45.83397560101784\n ],\n [\n -98.27760434034772,\n 45.83397560101784\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"33","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a07e4b07f02db5f9907","contributors":{"authors":[{"text":"Higgins, Kenneth F.","contributorId":272584,"corporation":false,"usgs":false,"family":"Higgins","given":"Kenneth F.","affiliations":[{"id":5089,"text":"South Dakota State University","active":true,"usgs":false}],"preferred":false,"id":311199,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1003260,"text":"1003260 - 1969 - Inorganic composition of gallbladder bile from fasted rainbow trout","interactions":[],"lastModifiedDate":"2025-08-04T16:00:32.321405","indexId":"1003260","displayToPublicDate":"1969-10-01T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3196,"text":"Progressive Fish-Culturist","active":true,"publicationSubtype":{"id":10}},"title":"Inorganic composition of gallbladder bile from fasted rainbow trout","docAbstract":"

Abstract not available. 

","language":"English","publisher":"American Fisheries Society","doi":"10.1577/1548-8640(1969)31[221:ICOGBF]2.0.CO;2","usgsCitation":"Hunn, J.B., 1969, Inorganic composition of gallbladder bile from fasted rainbow trout: Progressive Fish-Culturist, v. 31, no. 4, p. 221-222, https://doi.org/10.1577/1548-8640(1969)31[221:ICOGBF]2.0.CO;2.","productDescription":"2 p.","startPage":"221","endPage":"222","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":131204,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f1e4b07f02db5ee3c6","contributors":{"authors":[{"text":"Hunn, Joseph B.","contributorId":52109,"corporation":false,"usgs":true,"family":"Hunn","given":"Joseph","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":313035,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70225515,"text":"70225515 - 1969 - Flow of a disperse emulsion of crude oil in water in porous media","interactions":[],"lastModifiedDate":"2021-10-18T20:44:46.644536","indexId":"70225515","displayToPublicDate":"1969-09-28T15:35:41","publicationYear":"1969","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Flow of a disperse emulsion of crude oil in water in porous media","docAbstract":"

It has been suggested that oil migrates through reservoir sands in the form of a fine, disperse emulsion of oil in water, and that oil accumulations occur where the stream enters finer-grained rock such as silt or shale. In order to investigate the possible mechanisms, stable emulsions of oil in water were prepared without the use of wetting agents. They consisted of droplets 1/2 to 1-1/2 microns in diameter, in a concentration of 20 to 40 parts of oil per million of water. These emulsions passed freely through filter paper and ordinary passed freely through filter paper and ordinary sand. A plastic tube containing glass beads of 200-microns diameter included a bed 1/2-cm thick of crushed beads 37 to 88 microns in diameter. When the emulsion was passed through this tube, up to 80 percent of the oil was screened out at the coarse-fine interface. The amount removed depended on the contrast in grain size, the nature and the preferential wettability of the media. Similar results occurred when quartz sand was used as the coarse, and crushed sand as the fine medium. This screening did not occur as a result of capillary effects., because the pores were many times the diameter of the droplets. The oil collected as a result of flocculation of the droplets into strings and clusters., and the oil saturation in the pores consisted of masses of droplets with very little coalescence. Possibly electrostatic forces are more important Possibly electrostatic forces are more important than capillary in the behavior of fine, disperse, oil-in-water emulsions. our current ideas on multiphase flow in porous media may not apply to disperse emulsions.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Fall meeting of the Society of Petroleum Engineers of AIME","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"44th Annual Fall Meeting of the Society of Petroleum Engineers of AIME","conferenceDate":"September 28-October 1st, 1969","conferenceLocation":"Denver, CO","language":"English","publisher":"American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc.","doi":"10.2118/2481-MS","usgsCitation":"Cartmill, J.C., and Dickey, P.A., 1969, Flow of a disperse emulsion of crude oil in water in porous media, in Fall meeting of the Society of Petroleum Engineers of AIME, v. 44, Denver, CO, September 28-October 1st, 1969, SPE-2481-MS, 7 p., https://doi.org/10.2118/2481-MS.","productDescription":"SPE-2481-MS, 7 p.","costCenters":[],"links":[{"id":390637,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","noUsgsAuthors":false,"publicationDate":"1969-09-28","publicationStatus":"PW","contributors":{"authors":[{"text":"Cartmill, John C.","contributorId":267844,"corporation":false,"usgs":false,"family":"Cartmill","given":"John","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":825383,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dickey, Parke A.","contributorId":267845,"corporation":false,"usgs":false,"family":"Dickey","given":"Parke","email":"","middleInitial":"A.","affiliations":[{"id":38022,"text":"University of Tulsa","active":true,"usgs":false}],"preferred":false,"id":825384,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70010152,"text":"70010152 - 1969 - Jadeite: Shock-induced formation from oligoclase, Ries crater, Germany","interactions":[],"lastModifiedDate":"2026-02-03T18:46:07.855025","indexId":"70010152","displayToPublicDate":"1969-09-05T00:00:00","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Jadeite: Shock-induced formation from oligoclase, Ries crater, Germany","docAbstract":"

Jadeite (high-pressure sodium aluminum pyroxene) has been identified in a shock-phase assemblage of oligoclase. The shock assemblage consists of minute particles with high refractive indices that contain at least two phases: one (identified by x-ray) is a jadeite that is nearly pure NaAlSi2O6; the other has the chemical composition of oligoclase minus jadeite and appears to be largely amorphous.

","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.165.3897.1005","issn":"00368075","usgsCitation":"James, O., 1969, Jadeite: Shock-induced formation from oligoclase, Ries crater, Germany: Science, v. 165, no. 3897, p. 1005-1008, https://doi.org/10.1126/science.165.3897.1005.","productDescription":"4 p.","startPage":"1005","endPage":"1008","costCenters":[],"links":[{"id":219429,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Germany","otherGeospatial":"Ries crater","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 9.528859280686248,\n 48.976420873729154\n ],\n [\n 9.528859280686248,\n 48.14626906327297\n ],\n [\n 10.968140228690402,\n 48.14626906327297\n ],\n [\n 10.968140228690402,\n 48.976420873729154\n ],\n [\n 9.528859280686248,\n 48.976420873729154\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"165","issue":"3897","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3fdde4b0c8380cd648a5","contributors":{"authors":[{"text":"James, O.B.","contributorId":100526,"corporation":false,"usgs":true,"family":"James","given":"O.B.","email":"","affiliations":[],"preferred":false,"id":358136,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70223876,"text":"70223876 - 1969 - Potassium-argon ages bearing on the igneous and tectonic history of the Elk Mountains and vicinity, Colorado: A preliminary report","interactions":[],"lastModifiedDate":"2021-09-10T20:29:42.228546","indexId":"70223876","displayToPublicDate":"1969-09-01T15:09:08","publicationYear":"1969","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":"Potassium-argon ages bearing on the igneous and tectonic history of the Elk Mountains and vicinity, Colorado: A preliminary report","docAbstract":"

K-Ar ages for epizonal plutonic rocks together with field studies indicate that uplift of the Sawatch Range began at least 72 m.y. ago. Vertical uplift of the Sawatch Range was followed or accompanied by gravity sliding of sedimentary rocks along the Elk Range thrust fault. The greatest volume of exposed intrusive rocks in the Elk Mountains, Ruby Range, and West Elk Mountains consists of granodioritic rocks of Oligocene age which are younger than the Elk Range thrust. Miocene and Pliocene(?) mafic dikes were emplaced after most of the structural features in the area had developed. The Treasure Mountain dome near Marble was formed by emplacement of a unique soda granite pluton about 12.5 m.y. ago.

Discordant K-Ar and Rb-Sr ages for biotite from the Twin Lakes stock in the Sawatch Range suggest that this large pluton is of Late Cretaceous or early Tertiary age and lost argon during Oligocene plutonism, or is of Eocene age and represents a separate event not yet supported by other radiometric dates from the area.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1969)80[1749:PABOTI]2.0.CO;2","usgsCitation":"Obradovich, J.D., Mutschler, F.E., and Bryant, B., 1969, Potassium-argon ages bearing on the igneous and tectonic history of the Elk Mountains and vicinity, Colorado: A preliminary report: Geological Society of America Bulletin, v. 80, no. 9, p. 1749-1756, https://doi.org/10.1130/0016-7606(1969)80[1749:PABOTI]2.0.CO;2.","productDescription":"9 p.","startPage":"1749","endPage":"1756","costCenters":[],"links":[{"id":389112,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","city":"Marble","otherGeospatial":"Elk Mountains, Ruby Range, Sawatch Range, Treasure Mountain, Twin Lakes, West Elk Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -108.10546875,\n 39.774769485295465\n ],\n [\n -108.072509765625,\n 38.40194908237822\n ],\n [\n -105.633544921875,\n 38.47079371120379\n ],\n [\n -106.3916015625,\n 39.740986355883564\n ],\n [\n -108.10546875,\n 39.774769485295465\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"80","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Obradovich, John D.","contributorId":84361,"corporation":false,"usgs":true,"family":"Obradovich","given":"John","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":823053,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mutschler, Felix E.","contributorId":79893,"corporation":false,"usgs":true,"family":"Mutschler","given":"Felix","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":823054,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bryant, Bruce bbryant@usgs.gov","contributorId":1355,"corporation":false,"usgs":true,"family":"Bryant","given":"Bruce","email":"bbryant@usgs.gov","affiliations":[],"preferred":false,"id":823055,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70223399,"text":"70223399 - 1969 - Thermal additions and epifaunal organisms at Chalk Point, Maryland","interactions":[],"lastModifiedDate":"2021-08-25T19:38:53.668404","indexId":"70223399","displayToPublicDate":"1969-09-01T14:27:38","publicationYear":"1969","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1228,"text":"Chesapeake Science","active":true,"publicationSubtype":{"id":10}},"title":"Thermal additions and epifaunal organisms at Chalk Point, Maryland","docAbstract":"

Two sets of test panels, one in the intake and the other in the effluent canal of a steam-generating station, were submerged at monthly intervals in 1967. The panels were analyzed for epifaunal species composition, abundance, seasonal attachment, and total biomass production. The average surface-water temperature rose 6.3 C above ambient on the effluent side, and the biomass production of the epifaunal organisms found there increased nearly three times that of the intake. An earlier and larger set of some attached organisms occurred in the effluent, but there was little change in species composition between the intake and effluent canals. During the summer when high surface-water temperatures prevailed, there seemed to be a reduced number and/or disappearance of flatworms and colonial hydroids, along with increased barnacle growth. 

","language":"English","publisher":"Springer","doi":"10.2307/1350458","usgsCitation":"Nauman, J.W., and Cory, R.L., 1969, Thermal additions and epifaunal organisms at Chalk Point, Maryland: Chesapeake Science, v. 10, p. 218-226, https://doi.org/10.2307/1350458.","productDescription":"9 p.","startPage":"218","endPage":"226","costCenters":[],"links":[{"id":388500,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland","otherGeospatial":"Chalk Point","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -76.68229579925537,\n 38.55249497495678\n ],\n [\n -76.68173789978027,\n 38.544809001876935\n ],\n [\n -76.68482780456543,\n 38.540478987176925\n ],\n [\n -76.68293952941895,\n 38.53826353001221\n ],\n [\n -76.67654514312744,\n 38.543097166758976\n ],\n [\n -76.68040752410889,\n 38.5535689319726\n ],\n [\n -76.68229579925537,\n 38.55249497495678\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Nauman, Jon W.","contributorId":56232,"corporation":false,"usgs":true,"family":"Nauman","given":"Jon","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":821942,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cory, Robert L.","contributorId":77967,"corporation":false,"usgs":true,"family":"Cory","given":"Robert","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":821943,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70223398,"text":"70223398 - 1969 - Possible relation of mineralization to thermal springs in the Creede District, San Juan mountains, Colorado; a discussion","interactions":[],"lastModifiedDate":"2021-08-25T19:22:53.390434","indexId":"70223398","displayToPublicDate":"1969-09-01T14:07:41","publicationYear":"1969","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":"Possible relation of mineralization to thermal springs in the Creede District, San Juan mountains, Colorado; a discussion","docAbstract":"

No abstract available.

","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.64.6.696","usgsCitation":"Steven, T., 1969, Possible relation of mineralization to thermal springs in the Creede District, San Juan mountains, Colorado; a discussion: Economic Geology, v. 64, no. 6, p. 696-698, https://doi.org/10.2113/gsecongeo.64.6.696.","productDescription":"3 p.","startPage":"696","endPage":"698","costCenters":[],"links":[{"id":388497,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"Creede District, San Juan Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -107.545166015625,\n 37.568528265476075\n ],\n [\n -106.70196533203125,\n 37.568528265476075\n ],\n [\n -106.70196533203125,\n 37.98100996893789\n ],\n [\n -107.545166015625,\n 37.98100996893789\n ],\n [\n -107.545166015625,\n 37.568528265476075\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"64","issue":"6","noUsgsAuthors":false,"publicationDate":"1969-09-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Steven, Thomas A.","contributorId":57529,"corporation":false,"usgs":true,"family":"Steven","given":"Thomas A.","affiliations":[],"preferred":false,"id":821941,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}