{"pageNumber":"5730","pageRowStart":"143225","pageSize":"25","recordCount":165653,"records":[{"id":70207548,"text":"70207548 - 1971 - Investigations at active volcanoes","interactions":[],"lastModifiedDate":"2019-12-24T09:56:26","indexId":"70207548","displayToPublicDate":"1971-12-23T11:53:32","publicationYear":"1971","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":"Investigations at active volcanoes","docAbstract":"

The field of volcanology has expanded greatly in the years 1967–1970, and work on active volcanoes has kept pace with this expansion. I have restricted this summary and the accompanying bibliography to studies by U.S.‐based investigators of active or potentially active volcanoes. I have been immeasurably aided in writing this summary by communications from R. Citron of the Smithsonian Institution Center for Short‐Lived Phenomena, W. Melson and T. Simkin of the Smithsonian Institution, A. McBirney of the Center for Volcanology, University of Oregon, R.B. Forbes of the University of Alaska, and R.W. Decker of Dartmouth College.

","language":"English","publisher":"AGU","doi":"10.1029/EO052i005pIU057","usgsCitation":"Wright, T., 1971, Investigations at active volcanoes: Eos, Transactions, American Geophysical Union, v. 52, no. 5, p. 57-62, https://doi.org/10.1029/EO052i005pIU057.","productDescription":"6 p.","startPage":"57","endPage":"62","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":370648,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"5","noUsgsAuthors":false,"publicationDate":"2012-04-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Wright, Thomas L. twright@usgs.gov","contributorId":3890,"corporation":false,"usgs":true,"family":"Wright","given":"Thomas L.","email":"twright@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":778429,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70207545,"text":"70207545 - 1971 - Origin of the differentiated and hybrid lavas of Kilauea Volcano, Hawaii","interactions":[],"lastModifiedDate":"2020-06-03T15:51:26.883042","indexId":"70207545","displayToPublicDate":"1971-12-23T11:33:47","publicationYear":"1971","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":"Origin of the differentiated and hybrid lavas of Kilauea Volcano, Hawaii","docAbstract":"

Kilauea Volcano has erupted lava from its summit caldera and from two rift zones that extend from the summit towards the east and south-west. Lavas erupted from the summit of the volcano differ from each other principally in their content of olivine and define lines of ‘olivine control’ on magnesia variation diagrams. Lavas erupted on the rift zones may be similar in composition to the summit lavas or may be differentiated by processes that involve minerals other than olivine. All of the differentiated lavas have less than 6·8 per cent MgO and plot off the extension of olivine control lines for the summit lavas. Prehistoric vents (before A.D. 1750) from which differentiated lavas have been erupted are found on the east rift zone and in the western Koae fault zone adjacent to the south-west rift zone; historic vents for differentiated lavas are confined to the east rift zone. Twenty-one new analyses are presented for several of the east rift differentiates and for the newly discovered differentiates adjacent to the south-west rift zone. The differentiates have MgO as low as 3·9 per cent and SiO2 as high as 56 per cent; both extremes are found in the prehistoric lavas adjacent to the south-west rift.

Detailed petrochemical studies suggest the following conclusions:

  1. The chemical composition of magma erupted at Kilauea summit varies with the date of eruption. Lavas erupted before 1750, during the eighteenth and nineteenth centuries, and in the twentieth century form groups that can be distinguished chemically. On a lesser scale, each Kilauea summit eruption in the twentieth century has a chemistry that is distinctive with respect to the chemistry of every other summit eruption.

  2. During late prehistoric time pockets of differentiated magma were formed within the rift zones by separation of the liquid remaining after partial crystallization of bodies of summit magma. This process presumably is still going on within the east rift zone, but the more recently separated liquids have not yet been erupted to the surface. The relative time at which these differentiated magmas were produced can be estimated from calculations based on their chemical compositions, which show that the differentiates could lie on the liquid line of descent for Kilauea summit magma of prehistoric composition but not on any liquid line of descent for younger summit magmas.

  3. Lava from some eruptions, notably the early part of the 1955 eruption on the lower east rift, has the composition of the liquid fraction as it is generated within the rift. Lava compositions of other eruptions, including those of the later lavas of 1955, are best explained by mixing of magma supplied from a central reservoir beneath Kilauea summit with the differentiated liquid in the rift. Lava from each summit eruption is unique chemically, so it is possible to recognize its presence or absence as components of mixing in such mixed lavas. It appears that summit magma of composition characteristic of the 1952 and 1961 Halemaumau eruptions contributed to the composition of the mixed lavas produced in the latter part of the 1955 eruption. Summit magma of 1961 composition is alone sufficient to explain the composition of mixed lavas erupted in 1960 and 1961. In rift lavas erupted from 1962 to 1965, the composition of lava erupted in Halemaumau in 1967, in addition to the 1961 composition, is a component of mixing, and it is the dominant summit component in the composition of the two 1965 eruptions. The proportion of summit magma to differentiated magma needed to explain the composition of lavas erupted on the upper east rift increases from 1961 to 1965; this increase indicates that the differentiated magma was being diluted and used up by repeated flooding of this part of the rift zone by magma supplied from the central reservoir.

  4. The fact that components of ‘summit composition’ appear in rift eruptions before they appear undiluted in Halemaumau suggests that the central reservoir is vertically zoned. Rift eruptions are fed from lower levels where younger magma is available, and summit eruptions are fed from the relatively older magma above. The chemical distinction between lava of successive summit eruptions implies that significant convective mixing of magma does not take place throughout the central reservoir.

  5. The unique and uniform composition of lava of each successive summit eruption also suggests that summit eruptions end when all of the magma of one composition has been erupted. The magma erupted from the upper levels of the reservoir during one cycle is continually replaced from below by younger magma of different composition. In order for eruption to be renewed in Halemaumau, new magma from the mantle must be held in storage at intermediate levels before it attains an ‘eruptive state’.

  6. The hypothesis presented in 2–4 above permits qualitative predictions concerning future lava compositions. The composition of the next lava to be erupted in Halemaumau is expected to be distinct from that of the 1967 eruption, and this composition will presumably be identified in rift eruptions occurring between 1967 and the time of its appearance in Halemaumau.

  7. Differentiates of prehistoric age also were apparently formed in the same way as those of historic age, but the mixing cannot be described quantitatively because of poor control on the stratigraphy and the compositions of erupted lavas. One lava in the Koae group, that from Yellow Cone, appears to be a mixture of a picritic magma (12 per cent MgO) with a differentiated liquid with less than 2·5 per cent MgO and nearly 60 per cent SiO2.

","language":"English","publisher":"Oxford","doi":"10.1093/petrology/12.1.1","usgsCitation":"Wright, T., and Fiske, R.S., 1971, Origin of the differentiated and hybrid lavas of Kilauea Volcano, Hawaii: Journal of Petrology, v. 12, no. 1, p. 1-65, https://doi.org/10.1093/petrology/12.1.1.","productDescription":"65 p.","startPage":"1","endPage":"65","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":370645,"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 -155.36659240722656,\n 19.276146935787732\n ],\n [\n -155.1372528076172,\n 19.276146935787732\n ],\n [\n -155.1372528076172,\n 19.475655495911568\n ],\n [\n -155.36659240722656,\n 19.475655495911568\n ],\n [\n -155.36659240722656,\n 19.276146935787732\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"12","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Wright, Thomas L. twright@usgs.gov","contributorId":3890,"corporation":false,"usgs":true,"family":"Wright","given":"Thomas L.","email":"twright@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":778419,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fiske, Richard S.","contributorId":17984,"corporation":false,"usgs":true,"family":"Fiske","given":"Richard","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":778420,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70227419,"text":"70227419 - 1971 - Interpretation of an aeromagnetic strip across the northwestern United States","interactions":[],"lastModifiedDate":"2022-01-13T22:18:36.277954","indexId":"70227419","displayToPublicDate":"1971-12-01T16:01:40","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Interpretation of an aeromagnetic strip across the northwestern United States","docAbstract":"

This report discusses the results of aeromagnetic survey bounded by latitudes 45°30′ N. and 47°00′ N. and extending from the Rocky Mountains, to approximately 120 mi offshore in the Pacific Ocean. East of the Rocky Mountains, a larger area has been surveyed in the Great Plains bounded approximately by latitudes 44°50′ N. and 48°10′ N. and by longitudes 104°W. and 110°W.

Throughout the area of the survey, the magnetic map is marked by conspicuous northeast and northwest anomaly trends, lineaments, and breaks in the anomaly pattern. Their regional distribution, over-all magnetic character, and geologic evidence suggest that they are major structural features in the basement rocks. The close correspondence of structural and geologic features in younger rocks with these basement magnetic and structural trends suggest that basement trends controlled or at least greatly influenced intrusion, deposition, and structural history of younger rocks. In some cases, evidence suggests that basement structures have been reactivated during later tectonic activity.

Perhaps even more striking than the northeast- and northwest-trending features are large east-west magnetic discontinuities which, in some cases, extend completely across the strip to the edge of the shelf, and which, in some cases, can be correlated with large-scale discontinuities dating back to the Precambrian.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[3347:IOAASA]2.0.CO;2","usgsCitation":"Zietz, I., Hearn, B.C., Higgins, M.W., Robinson, G.D., and Swanson, D., 1971, Interpretation of an aeromagnetic strip across the northwestern United States: Bulletin of the Geological Society of America, v. 82, no. 12, p. 3347-3372, https://doi.org/10.1130/0016-7606(1971)82[3347:IOAASA]2.0.CO;2.","productDescription":"26 p.","startPage":"3347","endPage":"3372","costCenters":[],"links":[{"id":394358,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Idaho, Montana, North Dakota, Oregon, South Dakota, Washington, Wyoming","otherGeospatial":"Pacific Ocean, Rocky Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -125.068359375,\n 45.5\n ],\n [\n -103.3937890625,\n 45.5\n ],\n [\n -103.3937890625,\n 47.0\n ],\n [\n -125.068359375,\n 47.0\n ],\n [\n -125.068359375,\n 45.5\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Zietz, Isidore","contributorId":76708,"corporation":false,"usgs":true,"family":"Zietz","given":"Isidore","affiliations":[],"preferred":false,"id":830781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hearn, B. Carter chearn@usgs.gov","contributorId":189844,"corporation":false,"usgs":true,"family":"Hearn","given":"B.","email":"chearn@usgs.gov","middleInitial":"Carter","affiliations":[],"preferred":true,"id":830782,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Higgins, Michael W.","contributorId":12459,"corporation":false,"usgs":true,"family":"Higgins","given":"Michael","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":830783,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Robinson, G. D.","contributorId":96669,"corporation":false,"usgs":true,"family":"Robinson","given":"G.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":830784,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Swanson, Donald A. 0000-0002-1680-3591","orcid":"https://orcid.org/0000-0002-1680-3591","contributorId":229682,"corporation":false,"usgs":true,"family":"Swanson","given":"Donald A.","affiliations":[],"preferred":true,"id":830785,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70227343,"text":"70227343 - 1971 - Small plate tectonics in the northeastern Pacific","interactions":[],"lastModifiedDate":"2022-01-10T20:50:35.534852","indexId":"70227343","displayToPublicDate":"1971-12-01T14:30:50","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Small plate tectonics in the northeastern Pacific","docAbstract":"

Lithospheric plate motions in the northeastern Pacific were complicated at about 2.5 m.y. B.P. by the movement along a major northeast-trending fault cutting Cascadia Basin. An estimate of the slip rate along this fault gives critical information on the relative motions of four geometrically interdependent blocks. The fault is presently inactive. Seventy km of slip along this fault during 2 m.y. or less gives an average slip rate of about 3-5 cm/yr or greater, and resulting plate motions suggest a significantly greater rate of net subduction along the continental margin off Oregon than off Washington and Vancouver Island. Subduction rate off Oregon is less sensitive to slip rate along this fault than is subduction off Washington.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[3491:SPTITN]2.0.CO;2","usgsCitation":"Silver, E.A., 1971, Small plate tectonics in the northeastern Pacific: Bulletin of the Geological Society of America, v. 82, no. 12, p. 3491-3496, https://doi.org/10.1130/0016-7606(1971)82[3491:SPTITN]2.0.CO;2.","productDescription":"6 p.","startPage":"3491","endPage":"3496","costCenters":[],"links":[{"id":394134,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"British Columbia, Oregon, Washington","otherGeospatial":"Pacific Ocean, Vancouver Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -124.62890625,\n 40.413496049701955\n ],\n [\n -124.45312499999999,\n 41.68932225997044\n ],\n [\n -124.8486328125,\n 42.827638636242284\n ],\n [\n -124.51904296875,\n 44.040218713142146\n ],\n [\n -124.38720703124999,\n 46.51351558059737\n ],\n [\n -124.95849609375,\n 48.19538740833338\n ],\n [\n -128.12255859375,\n 50.05008477838256\n ],\n [\n -131.11083984374997,\n 51.82219818336938\n ],\n [\n -132.978515625,\n 53.26521293124656\n ],\n [\n -138.9990234375,\n 51.80861475198521\n ],\n [\n -130.517578125,\n 46.118941506107056\n ],\n [\n -130.53955078125,\n 40.34654412118006\n ],\n [\n -124.62890625,\n 40.413496049701955\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Silver, Eli A.","contributorId":83505,"corporation":false,"usgs":true,"family":"Silver","given":"Eli","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":830540,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70227455,"text":"70227455 - 1971 - Upper Cenozoic basalts with high Sr87/Sr86 and Sr/Rb ratios, southern Great Basin, western United States","interactions":[],"lastModifiedDate":"2022-01-17T19:40:53.91535","indexId":"70227455","displayToPublicDate":"1971-12-01T13:35:57","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Upper Cenozoic basalts with high Sr87/Sr86 and Sr/Rb ratios, southern Great Basin, western United States","title":"Upper Cenozoic basalts with high Sr87/Sr86 and Sr/Rb ratios, southern Great Basin, western United States","docAbstract":"

Upper Cenozoic basalts from southwestern Nevada and east-central California are unusually rich in both strontium (~ 1,200 ppm) and Sr87 (initial Sr87/Sr86 ~ 0.707). The average Rb/Sr ratio of these basalts is too low to have generated the observed Sr87/Sr86 ratio during the 4.6 b.y. of the Earth's existence, and the high strontium contents and low Rb/Sr ratios effectively rule out introduction to the basalts of the high Sr87/Sr86 values through contamination by more radiogenic material during ascent through the crust. Instead, the basalts must have been derived from unusual mantle material in which an originally high Rb/Sr ratio was markedly lowered during an earlier phase of magmatic activity.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[3503:UCBWHS]2.0.CO;2","usgsCitation":"Hedge, C.E., and Noble, D.C., 1971, Upper Cenozoic basalts with high Sr87/Sr86 and Sr/Rb ratios, southern Great Basin, western United States: Bulletin of the Geological Society of America, v. 82, no. 12, p. 3503-3509, https://doi.org/10.1130/0016-7606(1971)82[3503:UCBWHS]2.0.CO;2.","productDescription":"7 p.","startPage":"3503","endPage":"3509","costCenters":[],"links":[{"id":394442,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California, Nevada, Utah","otherGeospatial":"Great Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -120.38818359375,\n 33.94335994657882\n ],\n [\n -109.92919921875,\n 33.94335994657882\n ],\n [\n -109.92919921875,\n 38.8225909761771\n ],\n [\n -120.38818359375,\n 38.8225909761771\n ],\n [\n -120.38818359375,\n 33.94335994657882\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hedge, Carl E.","contributorId":76299,"corporation":false,"usgs":true,"family":"Hedge","given":"Carl","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":831013,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Noble, Donald C.","contributorId":64676,"corporation":false,"usgs":true,"family":"Noble","given":"Donald","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":831014,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70227390,"text":"70227390 - 1971 - Thin skin distension in Tertiary rocks of southeastern Nevada: Reply","interactions":[],"lastModifiedDate":"2022-01-12T19:47:25.312678","indexId":"70227390","displayToPublicDate":"1971-12-01T13:35:14","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Thin skin distension in Tertiary rocks of southeastern Nevada: Reply","docAbstract":"

No abstract available.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[3533:TSDITR]2.0.CO;2","usgsCitation":"Anderson, R.E., 1971, Thin skin distension in Tertiary rocks of southeastern Nevada: Reply: Bulletin of the Geological Society of America, v. 82, no. 12, p. 3533-3536, https://doi.org/10.1130/0016-7606(1971)82[3533:TSDITR]2.0.CO;2.","productDescription":"4 p.","startPage":"3533","endPage":"3536","costCenters":[],"links":[{"id":394261,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Great Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -117.59765625,\n 37.3002752813443\n ],\n [\n -114.697265625,\n 34.985003130171066\n ],\n [\n -114.53247070312499,\n 35.200744801724014\n ],\n [\n -114.67529296874999,\n 36.05798104702501\n ],\n [\n -114.3017578125,\n 35.97800618085566\n ],\n [\n -114.071044921875,\n 36.049098959065645\n ],\n [\n -114.04907226562499,\n 39.52946653645165\n ],\n [\n -117.5537109375,\n 39.5633531658293\n ],\n [\n -117.59765625,\n 37.3002752813443\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Anderson, R. Ernest","contributorId":104484,"corporation":false,"usgs":true,"family":"Anderson","given":"R.","email":"","middleInitial":"Ernest","affiliations":[],"preferred":false,"id":830728,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70227341,"text":"70227341 - 1971 - Status of engineering geologic and environmental geologic mapping in the United States","interactions":[],"lastModifiedDate":"2022-01-10T19:55:40.719686","indexId":"70227341","displayToPublicDate":"1971-12-01T13:22:40","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1128,"text":"Bulletin of the International Association of Engineering Geology","active":true,"publicationSubtype":{"id":10}},"title":"Status of engineering geologic and environmental geologic mapping in the United States","docAbstract":"

1. Engineering geologic maps in the United States may be one map prepared as part of a larger study of environmental geology, individual areal geologic maps containing additional engineering geologic data, or engineering geologic maps of single construction sites.

2. No systematic methodology for engineering geologic or environmental geologic maps has been developed.

3. Environmental geology studies combine the efforts of workers in a number of geologic fields to produce many maps of basic data, as well as various interpretative maps, only one of which may be an engineering geologic or foundation conditions map. Maps of many scales may be prepared for a single study, depending upon the geologic conditions, the main problems of the area, and the principal needs.

4. New technology, including computers and various types of aerial photography, is constantly being developed, and its use is being encouraged to increase the speed and efficiency of map preparation.

5. The use of engineering geologic and environmental geologic maps in the United States is constantly growing; such maps will continue to be made in increasing numbers.

","language":"English","publisher":"Springer","doi":"10.1007/BF02635376","usgsCitation":"Radbruch, D.H., 1971, Status of engineering geologic and environmental geologic mapping in the United States: Bulletin of the International Association of Engineering Geology, v. 4, p. 4-14, https://doi.org/10.1007/BF02635376.","productDescription":"11 p.","startPage":"4","endPage":"14","costCenters":[],"links":[{"id":394122,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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Discussion","interactions":[],"lastModifiedDate":"2022-01-14T18:48:17.211155","indexId":"70227438","displayToPublicDate":"1971-12-01T12:43:29","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Thin skin distension in Tertiary rocks of southeastern Nevada: Discussion","docAbstract":"

No abstract available.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[3529:TSDITR]2.0.CO;2","usgsCitation":"George A. Thompson, 1971, Thin skin distension in Tertiary rocks of southeastern Nevada: Discussion: Bulletin of the Geological Society of America, v. 82, no. 12, p. 3529-3531, https://doi.org/10.1130/0016-7606(1971)82[3529:TSDITR]2.0.CO;2.","productDescription":"3 p.","startPage":"3529","endPage":"3531","costCenters":[],"links":[{"id":394407,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Great Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -117.59765625,\n 37.3002752813443\n ],\n [\n -114.697265625,\n 34.985003130171066\n ],\n [\n -114.53247070312499,\n 35.200744801724014\n ],\n [\n -114.67529296874999,\n 36.05798104702501\n ],\n [\n -114.3017578125,\n 35.97800618085566\n ],\n [\n -114.071044921875,\n 36.049098959065645\n ],\n [\n -114.04907226562499,\n 39.52946653645165\n ],\n [\n -117.5537109375,\n 39.5633531658293\n ],\n [\n -117.59765625,\n 37.3002752813443\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"George A. Thompson","contributorId":196221,"corporation":false,"usgs":false,"family":"George A. Thompson","affiliations":[],"preferred":false,"id":830911,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70227386,"text":"70227386 - 1971 - Tertiary igneous chronology of the Great Basin of western United States — Implications for tectonic models","interactions":[],"lastModifiedDate":"2022-01-12T18:51:08.206116","indexId":"70227386","displayToPublicDate":"1971-12-01T12:42:35","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Tertiary igneous chronology of the Great Basin of western United States — Implications for tectonic models","docAbstract":"

The chronology of igneous activity in the Great Basin of western United States is used as a time framework for a simple plate model. This chronology suggests that a plate (Farallon plate) became underthrust to sufficient depth by the middle Tertiary to trigger the eruption of volcanic rocks of andesitic to rhyolitic composition in the central part of the Great Basin, 40 m.y. ago. This plate continued to be underthrust until about 19 m.y. ago, at which time it was completely consumed and volcanic activity ceased. When the oceanic ridge reached a certain point under the Great Basin about 16 m.y. ago, this resulted in the widespread eruption of olivine basalt and the main initial phase of Basin and Range faulting.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[3497:TICOTG]2.0.CO;2","usgsCitation":"McKee, E.H., 1971, Tertiary igneous chronology of the Great Basin of western United States — Implications for tectonic models: Bulletin of the Geological Society of America, v. 82, no. 12, p. 3497-3501, https://doi.org/10.1130/0016-7606(1971)82[3497:TICOTG]2.0.CO;2.","productDescription":"5 p.","startPage":"3497","endPage":"3501","costCenters":[],"links":[{"id":394252,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California, Idaho, Nevada, Oregon, Utah","otherGeospatial":"Great Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -120.69580078125001,\n 38.90813299596705\n ],\n [\n -117.92724609375,\n 34.88593094075317\n ],\n [\n -114.67529296874999,\n 34.903952965590065\n ],\n [\n -114.169921875,\n 35.96022296929667\n ],\n [\n -111.90673828125,\n 38.976492485539396\n ],\n [\n -112.0166015625,\n 42.00032514831621\n ],\n [\n -112.69775390625,\n 42.94033923363181\n ],\n [\n -117.04833984375001,\n 43.03677585761058\n ],\n [\n -120.65185546875,\n 42.032974332441405\n ],\n [\n -120.69580078125001,\n 38.90813299596705\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"McKee, Edwin H. mckee@usgs.gov","contributorId":3728,"corporation":false,"usgs":true,"family":"McKee","given":"Edwin","email":"mckee@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":830724,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70260099,"text":"70260099 - 1971 - The impact of the introduction of duck virus enteritis (duck plague) to the commercial duck industry and other waterfowl in the United States","interactions":[],"lastModifiedDate":"2024-10-28T14:14:51.283886","indexId":"70260099","displayToPublicDate":"1971-12-01T08:46:14","publicationYear":"1971","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The impact of the introduction of duck virus enteritis (duck plague) to the commercial duck industry and other waterfowl in the United States","docAbstract":"

No abstract available.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"XIV World's poultry congress","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"XIV World's Poultry Congress","conferenceDate":"September 1970","conferenceLocation":"Madrid, Spain","language":"English","publisher":"Ministerio de Agricultura","usgsCitation":"Walker, J., Urban, W.D., Nadler, H., and Locke, L.N., 1971, The impact of the introduction of duck virus enteritis (duck plague) to the commercial duck industry and other waterfowl in the United States, in XIV World's poultry congress, Madrid, Spain, September 1970, p. 468-470.","productDescription":"3 p.","startPage":"468","endPage":"470","costCenters":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"links":[{"id":463244,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.wpsa.com/index.php/publications/wpsa-proceedings/world-s-poultry-congresses/proceedings-1921-1996","linkFileType":{"id":5,"text":"html"}},{"id":463245,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Walker, J.T.","contributorId":84022,"corporation":false,"usgs":false,"family":"Walker","given":"J.T.","affiliations":[],"preferred":false,"id":916989,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Urban, William D.","contributorId":345583,"corporation":false,"usgs":false,"family":"Urban","given":"William","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":916990,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nadler, H.E.","contributorId":29912,"corporation":false,"usgs":true,"family":"Nadler","given":"H.E.","email":"","affiliations":[],"preferred":false,"id":916991,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Locke, Louis N.","contributorId":71233,"corporation":false,"usgs":true,"family":"Locke","given":"Louis","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":916992,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70010348,"text":"70010348 - 1971 - Evolving subduction zones in the western United States, as interpreted from igneous rocks","interactions":[],"lastModifiedDate":"2026-01-26T16:46:37.952306","indexId":"70010348","displayToPublicDate":"1971-11-19T00:00:00","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Evolving subduction zones in the western United States, as interpreted from igneous rocks","docAbstract":"

Variations in the ratio of K2O to SiO2 in andesitic rocks suggest early and middle Cenozoic subduction beneath the western United States along two subparallel imbricate zones dipping about 20 degrees eastward. The western zone emerged at the continental margin, but the eastern zone was entirely beneath the continental plate. Mesozoic subduction apparently occurred along a single steeper zone.

","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.174.4011.821","issn":"00368075","usgsCitation":"Lipman, P.W., Prostka, H., and Christiansen, R., 1971, Evolving subduction zones in the western United States, as interpreted from igneous rocks: Science, v. 174, no. 4011, p. 821-825, https://doi.org/10.1126/science.174.4011.821.","productDescription":"5 p.","startPage":"821","endPage":"825","costCenters":[],"links":[{"id":219229,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"western United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -126.74221709761946,\n 48.97652831180986\n ],\n [\n -126.74221709761946,\n 31.724368695952563\n ],\n [\n -103.42282726016703,\n 31.724368695952563\n ],\n [\n -103.42282726016703,\n 48.97652831180986\n ],\n [\n -126.74221709761946,\n 48.97652831180986\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"174","issue":"4011","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d94e4b0c8380cd530c9","contributors":{"authors":[{"text":"Lipman, P. W.","contributorId":93470,"corporation":false,"usgs":true,"family":"Lipman","given":"P.","middleInitial":"W.","affiliations":[],"preferred":false,"id":358694,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prostka, H.J.","contributorId":31369,"corporation":false,"usgs":true,"family":"Prostka","given":"H.J.","affiliations":[],"preferred":false,"id":358693,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christiansen, R.L. 0000-0002-8017-3918","orcid":"https://orcid.org/0000-0002-8017-3918","contributorId":25565,"corporation":false,"usgs":true,"family":"Christiansen","given":"R.L.","affiliations":[],"preferred":false,"id":358692,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70260852,"text":"70260852 - 1971 - Ground-water pumpage in parts of Merced, Madera, Fresno, Kings, and Tulare Counties, California, 1962-66","interactions":[],"lastModifiedDate":"2026-01-21T16:58:17.203806","indexId":"70260852","displayToPublicDate":"1971-11-12T11:05:43","publicationYear":"1971","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}},"title":"Ground-water pumpage in parts of Merced, Madera, Fresno, Kings, and Tulare Counties, California, 1962-66","docAbstract":"

Quantitative estimates of ground-water pumpage from the principal ground-water basins in California are necessary for future appraisal studies, for constructing hydrologic  models, and for systematic planning of water use and conservation. Methods of estimating pumpage for this report are based on metered pumpages, on electric-power consumption and fuel consumption by internal-combustion engines or agricultural wells, and on duty of water for municipal areas. This report is the third of a series planned to include the Central Valley of California.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70260852","collaboration":"Prepared in cooperation with the California Department of Water Resources","usgsCitation":"Mitten, H.T., and Ogilbee, W., 1971, Ground-water pumpage in parts of Merced, Madera, Fresno, Kings, and Tulare Counties, California, 1962-66: Open-File Report, iii, 8 p., https://doi.org/10.3133/70260852.","productDescription":"iii, 8 p.","costCenters":[],"links":[{"id":463876,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70260852/report-thumb.jpg"},{"id":485009,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70260852/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","county":"Fresno County, Madera County, Merced County, Tulare County","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -121.74265624125817,\n 37.42406923520494\n ],\n [\n -121.74265624125817,\n 35.85671302602901\n ],\n [\n -118.12127194447606,\n 35.85671302602901\n ],\n [\n -118.12127194447606,\n 37.42406923520494\n ],\n [\n -121.74265624125817,\n 37.42406923520494\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Mitten, Hugh T.","contributorId":103652,"corporation":false,"usgs":true,"family":"Mitten","given":"Hugh","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":918299,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ogilbee, William","contributorId":106093,"corporation":false,"usgs":true,"family":"Ogilbee","given":"William","email":"","affiliations":[],"preferred":false,"id":918300,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70227354,"text":"70227354 - 1971 - Tectonics of the Mendocino triple junction","interactions":[],"lastModifiedDate":"2022-01-10T23:11:46.320538","indexId":"70227354","displayToPublicDate":"1971-11-01T17:03:40","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Tectonics of the Mendocino triple junction","docAbstract":"

Interpretation of reflection profiles and of the magnetic anomaly pattern over the Gorda Basin and Escarpment gives broad agreement with the triple junction model of McKenzie and Morgan (1969). However, the basin has undergone internal deformation, a local departure from rigid plate tectonics, and the escarpment has had a component of underthrusting by the Gorda block. Faults in the Gorda Basin which disturb young turbidites parallel the trends of magnetic anomalies, suggesting deformation of the oceanic crust along lines of primary weakness. The northeast trends of the faults give a constraint on first-motion solutions for earthquakes within the basin and suggest left-lateral slip on the faults. Analysis of the geometry and timing of the Gorda Basin deformation based on the magnetic pattern gives an average gross tectonic strain rate of 10−14/sec. These observations give a measure of the mechanics of deformation of oceanic lithosphere very close to a spreading rise crest.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[2965:TOTMTJ]2.0.CO;2","usgsCitation":"Silver, E.A., 1971, Tectonics of the Mendocino triple junction: Bulletin of the Geological Society of America, v. 82, no. 11, p. 2965-2977, https://doi.org/10.1130/0016-7606(1971)82[2965:TOTMTJ]2.0.CO;2.","productDescription":"13 p.","startPage":"2965","endPage":"2977","costCenters":[],"links":[{"id":394164,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Oregon","otherGeospatial":"Mendocino fault, Mendocino junction, San Andreas fault","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -132.451171875,\n 38.91668153637508\n ],\n [\n -123.387451171875,\n 38.91668153637508\n ],\n [\n -123.387451171875,\n 44.53567453241317\n ],\n [\n -132.451171875,\n 44.53567453241317\n ],\n [\n -132.451171875,\n 38.91668153637508\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Silver, Eli A.","contributorId":83505,"corporation":false,"usgs":true,"family":"Silver","given":"Eli","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":830551,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70227351,"text":"70227351 - 1971 - Age of the Mesozoic oceanic crust in the California Coast Ranges","interactions":[],"lastModifiedDate":"2022-01-10T22:39:22.830265","indexId":"70227351","displayToPublicDate":"1971-11-01T16:26:20","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Age of the Mesozoic oceanic crust in the California Coast Ranges","docAbstract":"

K-Ar ages of approximately 155 m.y. were measured on minerals from ophiolites at two localities in the California Coast Ranges. Upper Jurassic rocks of the Great Valley sequence are in depositional contact with underlying ophiolites, which are interpreted as Mesozoic oceanic crust that formed during differentiation of mantle material at a spreading ridge some 15 m.y. before deposition of the Great Valley sequence began.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[3209:AOTMOC]2.0.CO;2","usgsCitation":"Lanphere, M.A., 1971, Age of the Mesozoic oceanic crust in the California Coast Ranges: Bulletin of the Geological Society of America, v. 82, no. 11, p. 3209-3211, https://doi.org/10.1130/0016-7606(1971)82[3209:AOTMOC]2.0.CO;2.","productDescription":"3 p.","startPage":"3209","endPage":"3211","costCenters":[],"links":[{"id":394160,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Coast Ranges","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -120.355224609375,\n 34.786739162702524\n ],\n [\n -119.70703125,\n 34.542762387234845\n ],\n [\n -119.06982421874999,\n 34.34343606848294\n ],\n [\n -118.66333007812499,\n 34.379712580462204\n ],\n [\n -118.564453125,\n 34.56085936708384\n ],\n [\n -118.95996093749999,\n 35.146862906756304\n ],\n [\n -119.33349609375,\n 35.137879119634185\n ],\n [\n -119.90478515625,\n 35.594785665487244\n ],\n [\n -120.377197265625,\n 36.56260003738545\n ],\n [\n -120.87158203125,\n 37.17782559332976\n ],\n [\n -121.66259765625001,\n 37.94419750075404\n ],\n [\n -122.135009765625,\n 38.89958342598271\n ],\n [\n -122.29980468749999,\n 39.223742741391305\n ],\n [\n -122.56347656249999,\n 40.22921818870117\n ],\n [\n -122.6953125,\n 40.38002840251183\n ],\n [\n -123.33251953125,\n 40.697299008636755\n ],\n [\n -124.178466796875,\n 40.83874913796459\n ],\n [\n -124.43115234375,\n 40.57224011776902\n ],\n [\n -124.43115234375,\n 40.27952566881291\n ],\n [\n -124.01367187499999,\n 39.95185892663005\n ],\n [\n -123.72802734375,\n 39.51251701659638\n ],\n [\n -123.89282226562501,\n 39.30029918615029\n ],\n [\n -123.77197265625,\n 38.94232097947902\n ],\n [\n -123.167724609375,\n 38.47939467327645\n ],\n [\n -123.06884765625,\n 37.92686760148135\n ],\n [\n -122.6513671875,\n 37.79676317682161\n ],\n [\n -122.54150390625,\n 37.23032838760387\n ],\n [\n -122.33276367187499,\n 36.99377838872517\n ],\n [\n -121.904296875,\n 36.88840804313823\n ],\n [\n -121.9482421875,\n 36.712467243386264\n ],\n [\n -122.08007812499999,\n 36.63316209558658\n ],\n [\n -122.025146484375,\n 36.28856319836237\n ],\n [\n -121.28906250000001,\n 35.523285179107816\n ],\n [\n -120.355224609375,\n 34.786739162702524\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Lanphere, Marvin A. alder@usgs.gov","contributorId":2696,"corporation":false,"usgs":true,"family":"Lanphere","given":"Marvin","email":"alder@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":830548,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70227134,"text":"70227134 - 1971 - Mobility of uranium and thorium in glassy and crystallized silicic volcanic rocks","interactions":[],"lastModifiedDate":"2021-12-30T18:09:39.304688","indexId":"70227134","displayToPublicDate":"1971-11-01T11:31:43","publicationYear":"1971","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":"Mobility of uranium and thorium in glassy and crystallized silicic volcanic rocks","docAbstract":"

No abstract available.

","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.66.7.1061","usgsCitation":"Rosholt, J.N., , P., and Noble, D.C., 1971, Mobility of uranium and thorium in glassy and crystallized silicic volcanic rocks: Economic Geology, v. 66, no. 7, p. 1061-1069, https://doi.org/10.2113/gsecongeo.66.7.1061.","productDescription":"9 p.","startPage":"1061","endPage":"1069","costCenters":[],"links":[{"id":393660,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Colorado, Nebraska, Nevada, New Mexico, Wyoming","otherGeospatial":"Belted Range, Cougar Creek, Glass Mountain, Grassy Lake Reservoir, Kane Springs Wash caldera, Little Glass Mountain, Mono Crater, Muller Island, Ruby Mountain, Sappa formation, Saucer Mesa, Shirley Basin, Shoshone Mountain, Soldier Meadow, Thirsty Canyon, Valles Caldera","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": 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]\n}","volume":"66","issue":"7","noUsgsAuthors":false,"publicationDate":"1971-11-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Rosholt, J. N.","contributorId":11325,"corporation":false,"usgs":true,"family":"Rosholt","given":"J.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":829754,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":" Prijana","contributorId":270684,"corporation":false,"usgs":false,"given":"Prijana","email":"","affiliations":[],"preferred":false,"id":829755,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Noble, Donald C.","contributorId":64676,"corporation":false,"usgs":true,"family":"Noble","given":"Donald","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":829756,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70227431,"text":"70227431 - 1971 - Effects of karst features on circulation of water in carbonate rocks in coastal areas","interactions":[],"lastModifiedDate":"2022-01-14T17:11:28.34317","indexId":"70227431","displayToPublicDate":"1971-11-01T10:59:39","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Effects of karst features on circulation of water in carbonate rocks in coastal areas","docAbstract":"

The normal balance between fresh water in coastal aquifers and sea water applies also to carbonate-rock aquifers that have been karstified, but there are local modifications in the balance that need to be considered. Uneven distribution of permeability, expressed by a network of solution channels bounded by relatively impermeabler rock, causes an uneven distribution of head of the environmental water along the seacoast. Where sinkholes and (or) vertical solution shafts below sea level penetrate the aquifer, the fresh ground water may discharge through these karst features if the fresh-water head is greater than that of the salt water. However, under some conditions the salt-water head may exceed that of the fresh water, and the direction of movement is reversed as sea water flows into the aquifer. This sea-water flow into the aquifer occurs (1) where sinkholes, acting as “cased wells,” penetrate less permeable rock before reaching a lateral solution channel and (2) where (or when) the fresh-water head is less than that required to balance the salt water. On Andros Island, Bahamas, the range in tide (as much as 5 feet) from low tide to high tide is sufficient to cause such a reversal locally. During low tide the salt-water head becomes sufficiently low that the ground-water head exceeds that of the sea water, and the ground water flows through the sinkholes to the ocean floor; during high tide sea water flows in the sinkholes. In the Adriatic Sea along the coast of Yugoslavia, apparently the fresh-water head is sufficient to produce perennial springs in some localities, but in other areas, as in the Bay of Kastela near Split, the fresh-water head becomes low enough during some seasons that the flow is reversed and salt water enters the aquifer through the karst features.

The development of sinkholes and other karst features near the present coast and extending below sea level occurred generally during a low stand of the Pleistocene sea when the top of the saturated zone stood lower than the bottom of the deepest sinkholes or natural wells.

Integrated evaluations of (1) the distribution of permeability in coastal karst regions and (2) the principles relating to the dynamic balance between fresh aquifer water and sea water are leading to better knowledge of methods that may salvage much karst water which is lost to the sea.

","language":"English","publisher":"Elsevier","doi":"10.1016/0022-1694(71)90003-5","usgsCitation":"Stringfield, V.T., and LeGrand, H.E., 1971, Effects of karst features on circulation of water in carbonate rocks in coastal areas: Journal of Hydrology, v. 14, no. 2, p. 139-157, https://doi.org/10.1016/0022-1694(71)90003-5.","productDescription":"19 p.","startPage":"139","endPage":"157","costCenters":[],"links":[{"id":394394,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"The Bahamas, Croatia","city":"Split","otherGeospatial":"Adriatic Sea, Andros Island, Yugoslavia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.5634765625,\n 23.717468136962662\n ],\n [\n -77.4920654296875,\n 23.85067404608915\n ],\n [\n -77.50030517578125,\n 23.92099179936676\n ],\n [\n -77.54150390625,\n 24.13171516246295\n ],\n [\n -77.57720947265624,\n 24.20939467509706\n ],\n [\n -77.6129150390625,\n 24.246964554300924\n ],\n [\n -77.6568603515625,\n 24.259485382998978\n ],\n [\n -77.69805908203125,\n 24.42214378185897\n ],\n [\n -77.7117919921875,\n 24.529633541314364\n ],\n [\n -77.73101806640625,\n 24.542126388899305\n ],\n [\n -77.74200439453125,\n 24.60956626326091\n ],\n [\n -77.7227783203125,\n 24.65450599548674\n ],\n [\n -77.75299072265625,\n 24.701924833689933\n ],\n [\n -77.783203125,\n 24.749325626697196\n ],\n [\n -77.8765869140625,\n 24.844072974931866\n ],\n [\n -77.92877197265625,\n 24.928785481052262\n ],\n [\n -77.947998046875,\n 24.996015742094006\n ],\n [\n -77.98370361328125,\n 24.98107885823501\n ],\n [\n -77.94525146484375,\n 25.08311136003093\n ],\n [\n -77.969970703125,\n 25.098035823821835\n ],\n [\n -78.00018310546875,\n 25.095548539604252\n ],\n [\n -77.9644775390625,\n 25.145284610685064\n ],\n [\n -78.01391601562499,\n 25.19002975536265\n ],\n [\n -78.046875,\n 25.207426209065783\n ],\n [\n -78.10455322265625,\n 25.162687451233257\n ],\n [\n -78.13751220703125,\n 25.19002975536265\n ],\n [\n -78.23638916015625,\n 25.19002975536265\n ],\n [\n -78.189697265625,\n 25.05076877966861\n ],\n [\n -78.189697265625,\n 24.98107885823501\n ],\n [\n -78.21441650390625,\n 24.948709386318527\n ],\n [\n -78.19244384765625,\n 24.90885835502671\n ],\n [\n -78.27484130859375,\n 24.82911768116273\n ],\n [\n -78.4149169921875,\n 24.67946552658519\n ],\n [\n -78.46710205078125,\n 24.69443884773434\n ],\n [\n -78.55499267578125,\n 24.674474019870782\n ],\n [\n -78.4698486328125,\n 24.58958786341259\n ],\n [\n -78.23638916015625,\n 24.42214378185897\n ],\n [\n -78.1512451171875,\n 24.36210962726063\n ],\n [\n -78.11553955078124,\n 24.352101162808903\n ],\n [\n -78.057861328125,\n 24.23694700391751\n ],\n [\n -77.9754638671875,\n 24.12920858513251\n ],\n [\n -77.92877197265625,\n 24.06151244228103\n ],\n [\n -77.85186767578125,\n 23.998798966043488\n ],\n [\n -77.82989501953125,\n 23.87579191610102\n ],\n [\n -77.87384033203124,\n 23.747639913652666\n ],\n [\n -77.72003173828125,\n 23.659619388708066\n ],\n [\n -77.5634765625,\n 23.717468136962662\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 15.776367187499998,\n 42.53689200787315\n ],\n [\n 17.3199462890625,\n 42.53689200787315\n ],\n [\n 17.3199462890625,\n 43.723474896114794\n ],\n [\n 15.776367187499998,\n 43.723474896114794\n ],\n [\n 15.776367187499998,\n 42.53689200787315\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"14","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Stringfield, V. T.","contributorId":72369,"corporation":false,"usgs":true,"family":"Stringfield","given":"V.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":830883,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"LeGrand, H. E.","contributorId":54571,"corporation":false,"usgs":true,"family":"LeGrand","given":"H.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":830884,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70210299,"text":"70210299 - 1971 - Mean annual precipitation and precipitation depth-duration-frequency data for the San Francisco Bay region, California","interactions":[],"lastModifiedDate":"2025-01-21T17:17:00.918436","indexId":"70210299","displayToPublicDate":"1971-10-26T12:16:27","publicationYear":"1971","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5961,"text":"Basic Data Contribution","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"32","title":"Mean annual precipitation and precipitation depth-duration-frequency data for the San Francisco Bay region, California","docAbstract":"

This report presents precipitation data for the San Francisco Bay region in a form suitable for use as criteria for both drainage design and the study of the stability of land slopes. The data presented include (1) an isohyetal map showing long-term mean annual precipitation and (2) a table of storm precipitation depths, corresponding to various durations and frequencies, that are applicable to any site in the region. The regimen of precipitation in the region is such that depth-duration frequency characteristics for a site are closely related to the mean annual precipitation for that site.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70210299","collaboration":"Prepared in cooperation with the U.S. Department of Housing and Urban Development as part of the San Francisco Bay Region Environment and Resources Planning Study","usgsCitation":"Rantz, S., 1971, Mean annual precipitation and precipitation depth-duration-frequency data for the San Francisco Bay region, California: Basic Data Contribution 32, Report: iii, 23 p.; 1 Plate: 20.39 x 24.58 inches, https://doi.org/10.3133/70210299.","productDescription":"Report: iii, 23 p.; 1 Plate: 20.39 x 24.58 inches","costCenters":[],"links":[{"id":466254,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70210299/report-thumb.jpg"},{"id":466255,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70210299/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":466256,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70210299/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","city":"San Francisco","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -123.75,\n 39\n ],\n [\n -123.75,\n 36.5\n ],\n [\n -121.083333,\n 36.5\n ],\n [\n -121.083333,\n 39\n ],\n [\n -123.75,\n 39\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Rantz, S. E.","contributorId":34106,"corporation":false,"usgs":true,"family":"Rantz","given":"S. E.","affiliations":[],"preferred":false,"id":924668,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70227399,"text":"70227399 - 1971 - EROS — New observation vantage points and processes","interactions":[],"lastModifiedDate":"2022-01-12T23:23:03.525266","indexId":"70227399","displayToPublicDate":"1971-10-03T17:16:18","publicationYear":"1971","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"EROS — New observation vantage points and processes","docAbstract":"

The EROS Program objective is to utilize aircraft and spacecraft remote-sensing technology as complementary parts of integrated data collection, processing, and dissemination systems to support resources research and management functions of the Department of the Interior. The Program develops and coordinates research in the applications of new sensors for resources applications in cooperation with NASA. At present there are two major areas of activity: present there are two major areas of activity: The first is related to the Earth Resources Technology Satellite (ERTS). The second is a suite of projects designed to determine the applicability of new aerial and satellite sensing systems and techniques to geologic, geographic, hydrologic, and topographic mapping and for supporting natural resources management functions of the Department of the Interior. Programs with similar goals for agriculture and forestry, and for oceanography are being conducted in the Departments of Agriculture, Commerce, the Naval Oceanographic Office, and in a number of colleges and universities.

The first satellite designed specifically for resources research and applications, ERTS-A, is to be launched in early 1972. It will be an unmanned satellite carrying three experimental systems: A three camera Return Beam Vidicon (RBV) system, a 4-band Multispectral Scanning (MSS) radiometer system, and a Data Collection System (DCS). The RBV cameras will photograph simultaneously and instantaneously areas of the earth 100 × 100 nautical miles - or 10,000 square nautical miles - in the blue-green (.475-.575mu m), the red (.580-.680mu m), and the near infrared (.690-.830mu m). The MSS will record three wavelength bands in the same general spectral range and the fourth band (8.0 mu m) will extend farther into the infrared...

","conferenceTitle":"Fall Meeting of the Society of Petroleum Engineers of AIME","conferenceDate":"October 3-6, 1971","conferenceLocation":"New Orleans, Louisiana, United States","language":"English","publisher":"Society of Petroleum Engineers","doi":"10.2118/3451-MS","usgsCitation":"Fary, R.W., 1971, EROS — New observation vantage points and processes, Fall Meeting of the Society of Petroleum Engineers of AIME, New Orleans, Louisiana, United States, October 3-6, 1971, SPE-3451-MS, https://doi.org/10.2118/3451-MS.","productDescription":"SPE-3451-MS","costCenters":[],"links":[{"id":394296,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Earth","noUsgsAuthors":false,"publicationDate":"1971-10-03","publicationStatus":"PW","contributors":{"authors":[{"text":"Fary, Raymond W. Jr.","contributorId":22830,"corporation":false,"usgs":true,"family":"Fary","given":"Raymond","suffix":"Jr.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":830742,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70227400,"text":"70227400 - 1971 - Third International Seminar for Hydrology Professors","interactions":[],"lastModifiedDate":"2022-01-12T23:30:38.905719","indexId":"70227400","displayToPublicDate":"1971-10-01T17:25:01","publicationYear":"1971","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":"Third International Seminar for Hydrology Professors","docAbstract":"

The Third International Seminar for Hydrology Professors was held at Purdue University in Lafayette, Indiana. There were 72 U.S. participants from 25 States and 19 participants from 15 other countries as follows: three from Canada; two each from Costa Rica and Peru; and one each from The Republic of China, Colombia, El Salvador, France, India, Republic of Korea, Mexico, New Zealand, Portugal, Romania, Turkey, and the United Arab Republic. Seventy-eight of the participants were college or university professors and 13 represented various state and national research and technical agencies.

","conferenceTitle":"Third International Seminar for Hydrology Professors","conferenceDate":"July 18-30, 1971","conferenceLocation":"Lafayette, Indiana, United States","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO052i010p00723-01","usgsCitation":"Shown, L.M., 1971, Third International Seminar for Hydrology Professors: Eos Science News, v. 52, no. 10, p. 723-723, https://doi.org/10.1029/EO052i010p00723-01.","productDescription":"1 p.","startPage":"723","endPage":"723","costCenters":[],"links":[{"id":394297,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Indiana","city":"Lafayette","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -86.98356628417969,\n 40.34235741658335\n ],\n [\n -86.78031921386719,\n 40.34235741658335\n ],\n [\n -86.78031921386719,\n 40.52528265385008\n ],\n [\n -86.98356628417969,\n 40.52528265385008\n ],\n [\n -86.98356628417969,\n 40.34235741658335\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"52","issue":"10","noUsgsAuthors":false,"publicationDate":"2012-04-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Shown, Lynn M.","contributorId":7326,"corporation":false,"usgs":true,"family":"Shown","given":"Lynn","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":830743,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70206432,"text":"70206432 - 1971 - The problem of groundwater discharge into the seas","interactions":[],"lastModifiedDate":"2019-11-03T16:48:57","indexId":"70206432","displayToPublicDate":"1971-10-01T16:34:10","publicationYear":"1971","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}},"displayTitle":"The problem of groundwater discharge into the seas","title":"The problem of groundwater discharge into the seas","docAbstract":"

Introductory Note: The dynamic equilibrium of the various factors involved in the world water balance or budget is the central scientific problem of the International Hydrological Decade. One of the potentially vital elements of the balance is groundwater discharge to the oceans. To paraphrase the authors of the following Russian publication, the world water budget can't be properly balanced, statically or dynamically, until there are improved values for the amount of groundwater that is discharged directly to oceans, seas, and enclosed lakes. The following report, with its bibliography, presents some Russian approaches to the problem and provides a few bits of numerical information. The report was translated by Frank W. Trainer of the U.S. Geological Survey. The text has been slightly reduced in the interests of saving space but the bibliography is given in full and has been transcribed into more or less standard U.S. Geological Survey bibliographical style. ©1971. American Geophysical Union. All Rights Reserved.

","language":"English ","doi":"10.1029/EO052i010p00717","issn":"00963941","usgsCitation":"Kudelin, B., Zekster, I., Meskheteli, A., Brusilovsky, S., and Trainer, F., 1971, The problem of groundwater discharge into the seas: Eos, Transactions, American Geophysical Union, v. 52, no. 10, p. 717-722, https://doi.org/10.1029/EO052i010p00717.","productDescription":"6 p.","startPage":"717","endPage":"722","costCenters":[],"links":[{"id":368910,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"10","noUsgsAuthors":false,"publicationDate":"2012-04-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Kudelin, B.I.","contributorId":220224,"corporation":false,"usgs":false,"family":"Kudelin","given":"B.I.","email":"","affiliations":[],"preferred":false,"id":774523,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zekster, I.S.","contributorId":220225,"corporation":false,"usgs":false,"family":"Zekster","given":"I.S.","email":"","affiliations":[],"preferred":false,"id":774524,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Meskheteli, A.V.","contributorId":220226,"corporation":false,"usgs":false,"family":"Meskheteli","given":"A.V.","email":"","affiliations":[],"preferred":false,"id":774525,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brusilovsky, S.A.","contributorId":220227,"corporation":false,"usgs":false,"family":"Brusilovsky","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":774526,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Trainer, F.W.","contributorId":26007,"corporation":false,"usgs":true,"family":"Trainer","given":"F.W.","email":"","affiliations":[],"preferred":false,"id":774527,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70227314,"text":"70227314 - 1971 - Earth-science studies of a nuclear test area in the western Aleutian Islands: Supplementary hydrologic information: Discussion","interactions":[],"lastModifiedDate":"2022-01-07T21:06:37.284904","indexId":"70227314","displayToPublicDate":"1971-10-01T14:54:24","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Earth-science studies of a nuclear test area in the western Aleutian Islands: Supplementary hydrologic information: Discussion","docAbstract":"

No abstract available.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[2963:ESOANT]2.0.CO;2","usgsCitation":"Ballance, W.C., and Gard, L.M., 1971, Earth-science studies of a nuclear test area in the western Aleutian Islands: Supplementary hydrologic information: Discussion: Bulletin of the Geological Society of America, v. 82, no. 10, p. 2963-2963, https://doi.org/10.1130/0016-7606(1971)82[2963:ESOANT]2.0.CO;2.","productDescription":"1 p.","startPage":"2963","endPage":"2963","costCenters":[],"links":[{"id":394063,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Aleutian Islands, Amchitka","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -181.22222900390625,\n 51.56255861691012\n ],\n [\n 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C.","contributorId":98315,"corporation":false,"usgs":true,"family":"Ballance","given":"W.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":830410,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gard, L. M.","contributorId":91507,"corporation":false,"usgs":true,"family":"Gard","given":"L.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":830411,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70223311,"text":"70223311 - 1971 - Age and chemistry of tertiary volcanic rocks in north-central Arizona and relation of the rocks to the Colorado Plateaus","interactions":[],"lastModifiedDate":"2021-08-20T20:23:04.905588","indexId":"70223311","displayToPublicDate":"1971-10-01T14:31:55","publicationYear":"1971","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":"Age and chemistry of tertiary volcanic rocks in north-central Arizona and relation of the rocks to the Colorado Plateaus","docAbstract":"

During late Miocene (14.8 m.y.) to early Pliocene (10.1 m.y.) time, local latite and widespread basaltic flows accumulated with associated continental sedimentary deposits in north-central Arizona. Some of these rocks were displaced and tilted by normal faults, and new drainage, now occupied in part by basalt flows of late Pliocene age (average 5 m.y., maximum of 6 m.y.), was established at the southern margin of the Colorado Plateaus. The time of faulting and uplift of the Colorado Plateaus in this region is thus bracketed between about 10.1 and 6 m.y. ago.

Five analyzed basalts fall within the tholeiitic basalt field of the alkali-silica diagram and twenty are in the alkalic basalt field; in general, they are similar to other alkali-olivine basalts from the western United States.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[2767:AACOTV]2.0.CO;2","usgsCitation":"McKee, E.H., and Anderson, C.A., 1971, Age and chemistry of tertiary volcanic rocks in north-central Arizona and relation of the rocks to the Colorado Plateaus: Geological Society of America Bulletin, v. 82, no. 10, p. 2767-2782, https://doi.org/10.1130/0016-7606(1971)82[2767:AACOTV]2.0.CO;2.","productDescription":"18 p.","startPage":"2767","endPage":"2782","costCenters":[],"links":[{"id":388258,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Colorado Plateaus, Mogollon Rim","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.587646484375,\n 35.209721645221386\n ],\n [\n -112.6318359375,\n 33.76088200086917\n ],\n [\n -111.851806640625,\n 33.57343808567733\n ],\n [\n -111.2091064453125,\n 33.358061612778876\n ],\n [\n -109.0557861328125,\n 33.32134852669881\n ],\n [\n -109.0557861328125,\n 34.4793919710481\n ],\n [\n -111.22558593749999,\n 35.0254981588326\n ],\n [\n -112.423095703125,\n 35.205233347514536\n ],\n [\n -113.587646484375,\n 35.209721645221386\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"McKee, Edwin H. mckee@usgs.gov","contributorId":3728,"corporation":false,"usgs":true,"family":"McKee","given":"Edwin","email":"mckee@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":821689,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, Charles A.","contributorId":81108,"corporation":false,"usgs":true,"family":"Anderson","given":"Charles","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":821690,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70227464,"text":"70227464 - 1971 - Metamorphism of Precambrian granitic xenoliths in a mica peridotite at Rose Dome, Woodson County, Kansas: Part 2, petrologic and mineralogic studies","interactions":[],"lastModifiedDate":"2022-01-18T18:39:29.59557","indexId":"70227464","displayToPublicDate":"1971-10-01T12:27:17","publicationYear":"1971","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5935,"text":"Bulletin of the Geological Society of America","active":true,"publicationSubtype":{"id":10}},"title":"Metamorphism of Precambrian granitic xenoliths in a mica peridotite at Rose Dome, Woodson County, Kansas: Part 2, petrologic and mineralogic studies","docAbstract":"

Field, drill-core, petrographic, and mineralogic studies show that the Precambrian granitic rocks exposed on Rose Dome, Woodson County, Kansas, were emplaced as inclusions of basement rock in a mica peridotite magma that intruded the Pennsylvanian section of Rose Dome during Late Cretaceous time. High temperatures of the alkaline ultramafic magma (probably greater than 800° C) led to metamorphism of the granitic inclusions and the formation of high sanidine and high albite from original microcline and albite. Contact metamorphic effects on country rock include the development of buchite-like sanidine-magnesian biotite hornfels from Weston Shale (Pennsylvanian) that was intruded by the mica peridotite.

The high temperatures of the peridotite magma also led to partial melting of the granitic rocks; a quartzofeldspathic matrix shows volcanic textures and binds mineral and rock fragments together to produce the varied range of textures and structures of the granitic xenoliths. Partial melting of the granitic rocks accounts for those features that led earlier workers to conclude that the “granite” on Rose Dome had intruded the Pennsylvanian section. Those features included xenoliths of hornfels enclosed by granitic material and apparently intrusive relationships between the granitic rocks and metamorphosed shale. The lack of concordance in the Rb-Sr ages of the granitic rocks (Part 1) may stem partly from melting of the “granite” and exchange of ions with the mica peridotite magma, from the “sampling” of different levels of granitic crust by the upwelling peridotite magma, or from weathering.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1971)82[2869:MOPGXI]2.0.CO;2","usgsCitation":"Franks, P.C., Bickford, M.E., and Wagner, H.C., 1971, Metamorphism of Precambrian granitic xenoliths in a mica peridotite at Rose Dome, Woodson County, Kansas: Part 2, petrologic and mineralogic studies: Bulletin of the Geological Society of America, v. 82, no. 10, p. 2869-2889, https://doi.org/10.1130/0016-7606(1971)82[2869:MOPGXI]2.0.CO;2.","productDescription":"21 p.","startPage":"2869","endPage":"2889","costCenters":[],"links":[{"id":394454,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Kansas","county":"Woodson County","otherGeospatial":"Rose Dome","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -95.71469306945801,\n 37.77695634643178\n ],\n [\n -95.70407152175903,\n 37.77695634643178\n ],\n [\n -95.70407152175903,\n 37.78426582053905\n ],\n [\n -95.71469306945801,\n 37.78426582053905\n ],\n [\n -95.71469306945801,\n 37.77695634643178\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"82","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Franks, Paul C.","contributorId":37802,"corporation":false,"usgs":true,"family":"Franks","given":"Paul","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":831043,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bickford, M. E.","contributorId":6891,"corporation":false,"usgs":false,"family":"Bickford","given":"M.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":831044,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wagner, Holly C.","contributorId":55407,"corporation":false,"usgs":true,"family":"Wagner","given":"Holly","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":831045,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70227136,"text":"70227136 - 1971 - A method for discriminating between biogenic and chemical origins of the ore-stage pyrite in a roll-type uranium deposit","interactions":[],"lastModifiedDate":"2021-12-30T18:33:39.258583","indexId":"70227136","displayToPublicDate":"1971-10-01T12:20:01","publicationYear":"1971","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":"A method for discriminating between biogenic and chemical origins of the ore-stage pyrite in a roll-type uranium deposit","docAbstract":"

Some roll-type uranium deposits are marginal to an altered tongue in sandstone beds that originally contained more-or-less uniformly distributed pyrite. Mineralizing solutions percolated through the sandstone, oxidized nearly all the pre-existing pyrite, and then redeposited part of the pyrite downstream in an embryonic ore zone. The pyrite and the entire ore zone continued to migrate downstream in the sandstone, much as a sand dune migrates. The amount of pyrite in mature deposits varies systematically with the position in the ore body. It is postulated that the rate at which the pyrite was redeposited controlled the systematic variation in distribution of pyrite.Biogenic and chemical models which are described in the literature provide alternate explanations for the genesis of roll-type uranium deposits in sandstone. The different theoretical rates for the precipitation of pyrite in the two genetic models provide a distinctive distribution of pyrite that characterizes each process. The theoretical difference between the biogenic and chemical models provides a mathematical technique for identifying the origin of a deposit. Mathematical analysis of the pyrite content of a uranium deposit in the Shirley Basin, Wyoming, illustrates a practical application of the theory. Although a definite conclusion about the origin of roll-type deposits would require considerably more data than are now available, the pyrite content of this deposit does correspond to the theoretical pyrite content of the chemical model, suggesting that a disproportionation reaction was involved in its formation.

","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.66.6.919","usgsCitation":"Warren, C.G., 1971, A method for discriminating between biogenic and chemical origins of the ore-stage pyrite in a roll-type uranium deposit: Economic Geology, v. 66, no. 6, p. 919-928, https://doi.org/10.2113/gsecongeo.66.6.919.","productDescription":"10 p.","startPage":"919","endPage":"928","costCenters":[],"links":[{"id":393662,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Shirley Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -106.27349853515625,\n 42.190372799976615\n ],\n [\n -106.2652587890625,\n 42.183249931734096\n ],\n [\n -106.23023986816406,\n 42.261049162113856\n ],\n [\n -106.23435974121094,\n 42.374778361114195\n ],\n [\n -106.402587890625,\n 42.420415239489934\n ],\n [\n -106.435546875,\n 42.3143853165376\n ],\n [\n -106.43074035644531,\n 42.250376512405275\n ],\n [\n -106.27349853515625,\n 42.190372799976615\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"66","issue":"6","noUsgsAuthors":false,"publicationDate":"1971-10-01","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":829758,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}