{"pageNumber":"5625","pageRowStart":"140600","pageSize":"25","recordCount":165626,"records":[{"id":70156681,"text":"70156681 - 1973 - Effects of laboratory treatments on silver and other elements in native gold","interactions":[],"lastModifiedDate":"2015-08-25T17:06:31","indexId":"70156681","displayToPublicDate":"1973-04-28T15:45:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Effects of laboratory treatments on silver and other elements in native gold","docAbstract":"

Interpretation of the element content of gold and of alloy proportions of gold and silver may have useful applications in prospecting and ore genesis studies. The commonly used methods of concentration and recovery of gold for analysis (acid leach, roasting, or amalgamation), however, alter the content of silver and other elements in the gold. The treatment of gold with four mineral acids (HF, HCL, H2S04, and HNO3) and combinations of these acids, amalgamation of the gold, and roasting the gold in a muffle furnace at 650°C for 8 hours caused losses of 0-100 percent of the elements studied. In some of the samples studied these treatments also caused losses totaling as much as 50 percent, by weight, of the silver content (which made up 20 percent of the total sample weight). The other elements studied show similar behavior to a lesser extent. The results of these studies show that before one interprets compositional analyses for prospecting or other applications he must know to what extent a recovery treatment changes the composition of the elements.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Campbell, W.L., Mosier, E.L., and Antweiler, J., 1973, Effects of laboratory treatments on silver and other elements in native gold: Journal of Research of the U.S. Geological Survey, v. 1, no. 2, p. 211-220.","productDescription":"10 p.","startPage":"211","endPage":"220","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":307483,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":307482,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue2/report.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"volume":"1","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55dd91b2e4b0518e354dd157","contributors":{"authors":[{"text":"Campbell, W. L.","contributorId":46939,"corporation":false,"usgs":true,"family":"Campbell","given":"W.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":569940,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mosier, E. L.","contributorId":71537,"corporation":false,"usgs":true,"family":"Mosier","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":569941,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Antweiler, J.C.","contributorId":35722,"corporation":false,"usgs":true,"family":"Antweiler","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":569942,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":5220562,"text":"5220562 - 1973 - Pen-reared fulvous tree ducks used in movement studies of wild populations","interactions":[],"lastModifiedDate":"2025-02-24T16:41:57.924627","indexId":"5220562","displayToPublicDate":"1973-04-06T00:00:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Pen-reared fulvous tree ducks used in movement studies of wild populations","docAbstract":"

To obtain movement data on wild fulvous tree ducks (Dendrocygna bicolor) 165 immature pen-reared fulvous tree ducks were color-marked and released in three southeast Texas counties in July October 1969/70. Nine (5 percent) of the marked birds were recovered from 3 days to 9 months after release, and an additional 15 birds provided sight records. Many released birds apparently became integrated into the wild population; all of those observed were with wild flocks. Six birds were recovered over 50 miles from the release sites. Four released in late July to mid-September had moved eastward and two went southward in September or later. Five were still in the Texas-Louisiana rice belt (three in late November). The sixth bird was recovered in October in Veracruz, which supports the assumption that U.S. Gulf Coast nesting populations winter in southern Mexico.

","language":"English","publisher":"Wiley","doi":"10.2307/3798899","usgsCitation":"Flickinger, E.L., King, K.A., and Heyland, O., 1973, Pen-reared fulvous tree ducks used in movement studies of wild populations: Journal of Wildlife Management, v. 37, no. 2, p. 171-175, https://doi.org/10.2307/3798899.","productDescription":"5 p.","startPage":"171","endPage":"175","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":193943,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Louisiana, Texas","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -98.76367548777017,\n 29.90549728304535\n ],\n [\n -98.76367548777017,\n 26.074023755177024\n ],\n [\n -89.74477546304901,\n 26.074023755177024\n ],\n [\n -89.74477546304901,\n 29.90549728304535\n ],\n [\n -98.76367548777017,\n 29.90549728304535\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"37","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b16e4b07f02db6a5860","contributors":{"authors":[{"text":"Flickinger, Edward L.","contributorId":48907,"corporation":false,"usgs":true,"family":"Flickinger","given":"Edward","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":332019,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"King, Kirk A.","contributorId":9203,"corporation":false,"usgs":true,"family":"King","given":"Kirk","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":332018,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heyland, O.","contributorId":57970,"corporation":false,"usgs":true,"family":"Heyland","given":"O.","email":"","affiliations":[],"preferred":false,"id":332020,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":1001300,"text":"1001300 - 1973 - High survival and homing rate of hand-reared wild-strain mallards","interactions":[],"lastModifiedDate":"2025-02-24T16:58:18.17834","indexId":"1001300","displayToPublicDate":"1973-04-06T00:00:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"High survival and homing rate of hand-reared wild-strain mallards","docAbstract":"

In the summer of 1970, 648 (329 males and 319 females) hand-reared wild-strain mallards (Anas platyrhynchos) were banded and released at the Arrowwood National Wildlife Refuge, Edmunds, North Dakota. The females were also marked with numbered nasal saddles. Liberation was by the gentle release method, and no special effort was made to isolate or condition the ducklings prior to release. Ducklings were placed in an enclosed pond area at 25 to 45 days of age. Altogether, 627 (97 percent) ducklings reached flight age and dispersed gradually into the wild. All had left the release area by 25 November. First-year band recovery reports indicated that 68 (11 percent) of the birds were shot in 15 states. Their migration pattern was similar to that for immature wild mallards banded in North Dakota in 1970.

Eighty-nine (33 percent) of a possible 270 marked females returned to Arrowwood Refuge during 1971. When consideration is given to assumed normal natural mortality and crippling loss, an estimated minimum of 43 percent of the surviving females returned to the release area. Returning birds not observed would raise this figure even higher. This potential homing rate is considerably higher than rates reported for other studies using various strains of mallards. Numerous observations of nests and broods indicated that breeding behavior and nesting success were similar to those of wild mallards in the area.

The success of this release is attributed to the inherent capability of hand-reared, wild-strain mallards to revert to their wild behavior, and to the high survival to flight age and first fall migration afforded by the gentle release in a sanctuary area. Indications are that releases of this type under the described conditions can be used to increase the breeding population of mallards in a local area.

","language":"English","publisher":"Wiley","doi":"10.2307/3798897","usgsCitation":"Lee, F., and Kruse, A., 1973, High survival and homing rate of hand-reared wild-strain mallards: Journal of Wildlife Management, v. 37, no. 2, p. 154-159, https://doi.org/10.2307/3798897.","productDescription":"6 p.","startPage":"154","endPage":"159","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133524,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North Dakota","otherGeospatial":"Arrowwood National Wildlife Refuge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -98.8715546791248,\n 47.329259946741956\n ],\n [\n -98.8715546791248,\n 47.14078529744273\n ],\n [\n -98.75916838362271,\n 47.14078529744273\n ],\n [\n -98.75916838362271,\n 47.329259946741956\n ],\n [\n -98.8715546791248,\n 47.329259946741956\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"37","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a60e4b07f02db63553f","contributors":{"authors":[{"text":"Lee, F.B.","contributorId":30174,"corporation":false,"usgs":true,"family":"Lee","given":"F.B.","email":"","affiliations":[],"preferred":false,"id":310843,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kruse, A.D.","contributorId":19900,"corporation":false,"usgs":true,"family":"Kruse","given":"A.D.","email":"","affiliations":[],"preferred":false,"id":310842,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70010109,"text":"70010109 - 1973 - Kilauea Volcano, Hawaii: A search for the volcanomagnetic effect","interactions":[],"lastModifiedDate":"2026-01-23T21:34:31.360379","indexId":"70010109","displayToPublicDate":"1973-04-06T00:00:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Kilauea Volcano, Hawaii: A search for the volcanomagnetic effect","docAbstract":"Brief excursions of magnetic field differences between a base station and two satellite station magnetometers show only slight correlation with ground tilt at Kilauea Volcano. This result suggests that only transient, localized stresses occur during prolonged periods of deformation and that the volcano can support no large-scale pattern of shear stresses.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.180.4081.73","issn":"00368075","usgsCitation":"Davis, P., Jackson, D.B., Field, J., and Stacey, F., 1973, Kilauea Volcano, Hawaii: A search for the volcanomagnetic effect: Science, v. 180, no. 4081, p. 73-74, https://doi.org/10.1126/science.180.4081.73.","productDescription":"2 p.","startPage":"73","endPage":"74","costCenters":[],"links":[{"id":218702,"rank":1,"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 \"coordinates\": [\n [\n [\n -155.47263698857893,\n 19.34071198337125\n ],\n [\n -155.47263698857893,\n 19.198733221481675\n ],\n [\n -155.2394852062326,\n 19.198733221481675\n ],\n [\n -155.2394852062326,\n 19.34071198337125\n ],\n [\n -155.47263698857893,\n 19.34071198337125\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"180","issue":"4081","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a408fe4b0c8380cd64e5e","contributors":{"authors":[{"text":"Davis, P.M.","contributorId":15229,"corporation":false,"usgs":true,"family":"Davis","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":357936,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jackson, D. B.","contributorId":27057,"corporation":false,"usgs":true,"family":"Jackson","given":"D.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":357937,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Field, J.","contributorId":86480,"corporation":false,"usgs":true,"family":"Field","given":"J.","email":"","affiliations":[],"preferred":false,"id":357939,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stacey, F.D.","contributorId":59176,"corporation":false,"usgs":true,"family":"Stacey","given":"F.D.","email":"","affiliations":[],"preferred":false,"id":357938,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":89,"text":"89 - 1973 - Ground water in Santa Barbara and southern San Luis Obispo counties, California","interactions":[],"lastModifiedDate":"2014-08-04T13:47:59","indexId":"89","displayToPublicDate":"1973-04-01T13:45:41","publicationYear":"1973","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"Ground water in Santa Barbara and southern San Luis Obispo counties, California","docAbstract":"No abstract available.","language":"English","publisher":"U.S. Department of the Interior","publisherLocation":"Menlo Park, CA","doi":"10.3133/89","usgsCitation":"Warner, J.W., 1973, Ground water in Santa Barbara and southern San Luis Obispo counties, California, 2 p., https://doi.org/10.3133/89.","productDescription":"2 p.","numberOfPages":"2","costCenters":[],"links":[{"id":291618,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"California","county":"San Luis Obispo County;Santa Barbara County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -120.9227,34.3952 ], [ -120.9227,35.4068 ], [ -119.6399,35.4068 ], [ -119.6399,34.3952 ], [ -120.9227,34.3952 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53e09e58e4b0beb42bdca436","contributors":{"authors":[{"text":"Warner, James W.","contributorId":106119,"corporation":false,"usgs":true,"family":"Warner","given":"James","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":141917,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70241486,"text":"70241486 - 1973 - Compositions of biotites from unaltered and altered monzonitic rocks in the Bingham Mining District, Utah","interactions":[],"lastModifiedDate":"2023-03-21T18:37:33.722144","indexId":"70241486","displayToPublicDate":"1973-04-01T13:17:33","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Compositions of biotites from unaltered and altered monzonitic rocks in the Bingham Mining District, Utah","docAbstract":"

No abstract available.

","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.68.2.269","usgsCitation":"Moore, W., and Czamanske, G., 1973, Compositions of biotites from unaltered and altered monzonitic rocks in the Bingham Mining District, Utah: Economic Geology, v. 68, no. 2, p. 269-274, https://doi.org/10.2113/gsecongeo.68.2.269.","productDescription":"6 p.","startPage":"269","endPage":"274","costCenters":[],"links":[{"id":414476,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Bingham Mining District","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -112.26704173686407,\n 40.69009356888864\n ],\n [\n -112.27258160119291,\n 40.57342537608994\n ],\n [\n -112.35567956612441,\n 40.475519451519375\n ],\n [\n -112.34736976963133,\n 40.391184907323634\n ],\n [\n -112.30582078716557,\n 40.32047335845721\n ],\n [\n -112.21164309357637,\n 40.24863060493806\n ],\n [\n -112.11469546782295,\n 40.263428001584714\n ],\n [\n -112.06760662102836,\n 40.376415488728696\n ],\n [\n -112.08007131576815,\n 40.45128410363148\n ],\n [\n -112.06760662102836,\n 40.517647053479635\n ],\n [\n -112.0897660783437,\n 40.53764839726912\n ],\n [\n -112.09253601050796,\n 40.71109318835906\n ],\n [\n -112.19917839883693,\n 40.741530876475736\n ],\n [\n -112.25319207604217,\n 40.71949118240764\n ],\n [\n -112.26704173686407,\n 40.69009356888864\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"68","issue":"2","noUsgsAuthors":false,"publicationDate":"1973-04-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Moore, William J.","contributorId":30983,"corporation":false,"usgs":true,"family":"Moore","given":"William J.","affiliations":[],"preferred":false,"id":866998,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Czamanske, Gerald K.","contributorId":104907,"corporation":false,"usgs":true,"family":"Czamanske","given":"Gerald K.","affiliations":[],"preferred":false,"id":866999,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241579,"text":"70241579 - 1973 - A comparison of three methods of determining geomagnetic paleointensities","interactions":[],"lastModifiedDate":"2023-03-23T17:42:09.297189","indexId":"70241579","displayToPublicDate":"1973-04-01T12:34:45","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2310,"text":"Journal of Geomagnetism & Geoelectricity","active":true,"publicationSubtype":{"id":10}},"title":"A comparison of three methods of determining geomagnetic paleointensities","docAbstract":"

Paleointensity studies by the methods of the Thelliers, Wilson, and van Zijl were compared for adjacent specimens from each of five basaltic lava flows. For three of the flows, the actual paleointensity is independently known within ±6%. All specimens had Curie temperatures above 500°C, and those from four of the flows had lower Curie temperatures as well, indicating they probably underwent varying degrees of high-temperature oxidation and disproportionation during initial cooling. These four suffered irreversible changes in their blocking temperature spectra when heated in air above 400 to 500°C. Nonetheless, the paleointensities derived by the Thelliers' method below these temperatures agree with the actual values within the uncertainties. The values obtained by the other methods are not as accurate or reliable. In four out of five lavas, A. F. cleaning of 100 to 200 oe prior to each measurement of remanence in the Thelliers' method degraded the results for determination of paleointensity.

","language":"English","publisher":"Society of Geomagnetism and Earth, Planetary and Space Sciences","doi":"10.5636/jgg.25.415","usgsCitation":"Coe, R.S., and Gromme, C.S., 1973, A comparison of three methods of determining geomagnetic paleointensities: Journal of Geomagnetism & Geoelectricity, v. 25, no. 4, p. 415-435, https://doi.org/10.5636/jgg.25.415.","productDescription":"21 p.","startPage":"415","endPage":"435","costCenters":[],"links":[{"id":480658,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5636/jgg.25.415","text":"Publisher Index Page"},{"id":414635,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Coe, Robert S.","contributorId":20477,"corporation":false,"usgs":true,"family":"Coe","given":"Robert","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":867383,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gromme, C. Sherman","contributorId":22236,"corporation":false,"usgs":true,"family":"Gromme","given":"C.","email":"","middleInitial":"Sherman","affiliations":[],"preferred":false,"id":867384,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241683,"text":"70241683 - 1973 - Potassium-argon ages and paleomagnetism of the Waianae and Koolau Volcanic Series, Oahu, Hawaii","interactions":[],"lastModifiedDate":"2023-03-24T16:13:37.031605","indexId":"70241683","displayToPublicDate":"1973-04-01T10:58:58","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Potassium-argon ages and paleomagnetism of the Waianae and Koolau Volcanic Series, Oahu, Hawaii","docAbstract":"

Paleomagnetic and potassium-argon measurements on 786 oriented cores from 99 volcanic units at 18 sites in the Waianae and Koolau Ranges, Oahu, when combined with data from previous studies, show that the sub-aerial Waianae Volcano was active only from about 3.6 to 2.4 m.y. ago and the subaerial Koolau Volcano from about 2.6 to 1.8 m.y. ago. There is some evidence that Waianae Volcano was still active when Koolau Volcano emerged from the sea. The predominantly tholeiitic lower and middle members of the Waianae Volcanic Series are approximately contemporaneous and were extruded during the late Gilbert and early Gauss geomagnetic polarity epochs. They were followed within less than 0.2 m.y. by the alkalic lavas of the upper member, which were probably extruded largely during the later part of the Gauss normal polarity epoch. The Koolau Volcanic Series was extruded entirely during the early Matuyama reversed polarity epoch. Data from three thick stratigraphic sections in the Waianae and Koolau Volcanic Series indicate that stacks of lava flows as much as 470 m thick can be formed in less than 0.25 m.y. and that the maximum average period between superimposed lava flows is on the order of 103 yrs. Additional data on the hawaiite flow that led to the discovery of the Kaena reversed event indicate that this reversed flow is 2.85 ± 0.05 m.y. old. Angular dispersion of virtual geomagnetic poles (VGP) in the Hawaiian Islands appears to have decreased during the past 5 m.y. This may be caused by a decrease in dipole wobble, a decrease in the nondipole component of the Earth' magnetic field, or the accumulated effects of weathering, tectonism, and geomorphic processes in older rocks. The mean Waianae and Koolau VGPs are slightly on the side of the Earth's rotation axis away from Oahu. This supports, but does not prove, the hypothesis that the axial dipole is displaced slightly northward from the Earth's center. Three VGP “excursions” were recorded in sections of lava in the Waianae and Koolau ranges. During these excursions, the VGPs appear to have traveled away from or toward the geographic axis along great circle paths, suggesting they may be related to the dipole rather than the nondipole field and may record aborted reversals in polarity or rapid and infrequent dipole tilts.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<1217:PAAPOT>2.0.CO;2","usgsCitation":"Doell, R., and Dalrymple, G.B., 1973, Potassium-argon ages and paleomagnetism of the Waianae and Koolau Volcanic Series, Oahu, Hawaii: Geological Society of America Bulletin, v. 84, no. 4, p. 1217-1241, https://doi.org/10.1130/0016-7606(1973)84<1217:PAAPOT>2.0.CO;2.","productDescription":"25 p.","startPage":"1217","endPage":"1241","costCenters":[],"links":[{"id":414709,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawai'i","otherGeospatial":"Koolau Volcanic Series, O'ahu, Waianae Volcanic Series","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -157.64814625709943,\n 21.296313913785113\n ],\n [\n -157.64586520962206,\n 21.311190157345095\n ],\n [\n -157.6793205726252,\n 21.326773177490267\n ],\n [\n -157.73102431544822,\n 21.34022990890972\n ],\n [\n -157.72418117301575,\n 21.352977252407527\n ],\n [\n -157.76371932929214,\n 21.406787140411538\n ],\n [\n -157.81466272295597,\n 21.415989480936076\n ],\n [\n -157.8435559910042,\n 21.477559445154057\n ],\n [\n -157.85039913343658,\n 21.50302906367797\n ],\n [\n -157.82834900782098,\n 21.52000633198078\n ],\n [\n -157.84431634016332,\n 21.553954917210916\n ],\n [\n -157.8830941472806,\n 21.580825247434532\n ],\n [\n -157.92111160523865,\n 21.63313737378975\n ],\n [\n -157.97737744301665,\n 21.68684363108703\n ],\n [\n -158.01691559929304,\n 21.69532173807015\n ],\n [\n -158.05113131145532,\n 21.66988592049664\n ],\n [\n -158.06481759632,\n 21.640205128552225\n ],\n [\n -158.05949515220587,\n 21.587895558887993\n ],\n [\n -158.03060188415776,\n 21.551126171701625\n ],\n [\n -158.00094826695042,\n 21.514347462858893\n ],\n [\n -157.98269988713062,\n 21.47189892470827\n ],\n [\n -157.98117918881226,\n 21.415281629164923\n ],\n [\n -157.94468242917245,\n 21.398292157916487\n ],\n [\n -157.88157344896206,\n 21.340229908909265\n ],\n [\n -157.8397542452082,\n 21.298439183646806\n ],\n [\n -157.77512456667938,\n 21.270808279205283\n ],\n [\n -157.71429663394647,\n 21.28214466283532\n ],\n [\n -157.71429663394647,\n 21.25592795051884\n ],\n [\n -157.69984999992238,\n 21.253093431710667\n ],\n [\n -157.64814625709943,\n 21.296313913785113\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -158.06709856566675,\n 21.391920465549262\n ],\n [\n -158.07013996230344,\n 21.440054268200797\n ],\n [\n -158.0648175181893,\n 21.473313943942813\n ],\n [\n -158.10283497614736,\n 21.498076855520793\n ],\n [\n -158.07013996230344,\n 21.50515119916568\n ],\n [\n -158.08534694548666,\n 21.542639472815452\n ],\n [\n -158.13324894251383,\n 21.55254041992154\n ],\n [\n -158.21536665170333,\n 21.583653282033367\n ],\n [\n -158.29064121846034,\n 21.57799689480815\n ],\n [\n -158.24273922143308,\n 21.544053935191272\n ],\n [\n -158.232854682364,\n 21.510103034956586\n ],\n [\n -158.23437538068237,\n 21.476144204168776\n ],\n [\n -158.17810954290437,\n 21.436515558361464\n ],\n [\n -158.13552998999128,\n 21.454208249182386\n ],\n [\n -158.1461748782196,\n 21.398999960410876\n ],\n [\n -158.13857138662797,\n 21.36501526058059\n ],\n [\n -158.1111988168982,\n 21.34164620352108\n ],\n [\n -158.06253647071182,\n 21.348728129452525\n ],\n [\n -158.05949507407516,\n 21.38200859705475\n ],\n [\n -158.06709856566675,\n 21.391920465549262\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Doell, Richard R.","contributorId":66683,"corporation":false,"usgs":true,"family":"Doell","given":"Richard R.","affiliations":[],"preferred":false,"id":867541,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dalrymple, G. Brent","contributorId":55146,"corporation":false,"usgs":true,"family":"Dalrymple","given":"G.","email":"","middleInitial":"Brent","affiliations":[],"preferred":false,"id":867542,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70241531,"text":"70241531 - 1973 - Submarine chert-argillite slide-breccia of Paleozoic age in the southern Klamath Mountains, California","interactions":[],"lastModifiedDate":"2023-03-22T14:34:15.672145","indexId":"70241531","displayToPublicDate":"1973-04-01T09:23:33","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Submarine chert-argillite slide-breccia of Paleozoic age in the southern Klamath Mountains, California","docAbstract":"

A unique chert-argillite breccia—a breccia with an argillite matrix, in which nearly all the fragments are chert—underlies an area of at least 60 sq mi in the southern Klamath Mountains of California. Rocks of this composition have not been reported previously, in the Klamath Mountains or elsewhere, but in northwestern Trinity County they make up a large part of the western Paleozoic and Triassic belt. The remainder of the belt consists of northerly trending sinuous zones of two other principal lithologies: radiolarian chert, rhythmically interbedded with slate or phyllite, crops out in three zones in the eastern, central, and western parts of the area; and massive metabasalt and metadiabase intruded by gabbro and serpentinite occur in a zone about 3 mi wide in the eastern part of the area.

Although the predominance of chert fragments makes the chert-argillite breccia apparently unique, rocks that are generally similar, consisting of angular to subangular clasts in a pelitic matrix, have been studied in many localities. Field relations and petrographic features of the chert-argillite breccia—specifically the angularity of clasts, absence of a sandy matrix, preservation of Radiolaria in both chert clasts and pelitic matrix, presence of contorted flow laminae in the matrix, large size of some of the exotic blocks, close association with chert, pillow lava, and limestone, absence of stretching or slickensiding of clasts, and overall dimensions of the unit measurable in miles—variously preclude origin of the rock as a normal sedimentary conglomerate, a tectonic breccia, a tillite, or a subaerial mudflow, but include features common to numerous submarine-slide deposits. We interpret the chert-argillite breccia as the result of uplift and subsequent sliding of a thick deposit of inter-layered chert and pelitic ooze. Brittle fracturing of the chert and mobilization of water-saturated ooze produced the observed features.

Fossiliferous limestone blocks within the slide-breccia indicate that it is no older than Silurian or Devonian, and it predates Jurassic metamorphism and plutonism. The relation of the breccia to a major northwest-trending fault zone, and to serpentinite within this zone, suggests that the formation of the breccia was generally synchronous with the faulting and ultramafic intrusion. Rocks of the central metamorphic belt, east of the mapped area, were metamorphosed during a Devonian orogeny, and we suggest that the submarine slide-breccia was formed as a frontal effect of the same orogeny.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<1423:SCSOPA>2.0.CO;2","usgsCitation":"Cox, D.P., and Pratt, W.P., 1973, Submarine chert-argillite slide-breccia of Paleozoic age in the southern Klamath Mountains, California: Geological Society of America Bulletin, v. 84, no. 4, p. 1423-1438, https://doi.org/10.1130/0016-7606(1973)84<1423:SCSOPA>2.0.CO;2.","productDescription":"15 p.","startPage":"1423","endPage":"1438","costCenters":[],"links":[{"id":414550,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Klamath Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -124.4226593323977,\n 40.37035877012454\n ],\n [\n -122.60770111985475,\n 40.32153750426667\n ],\n [\n -122.35147172514274,\n 40.581509069642124\n ],\n [\n -122.35147172514274,\n 40.888917981387124\n ],\n [\n -122.27673815168488,\n 41.194905355525776\n ],\n [\n -122.47958642249858,\n 41.70703350143842\n ],\n [\n -122.372824174702,\n 42.017127535348635\n ],\n [\n -124.26251596070249,\n 42.00919519536757\n ],\n [\n -124.29454463504153,\n 41.75483814519038\n ],\n [\n -124.08102013944837,\n 41.395436560564406\n ],\n [\n -124.23048728636347,\n 41.178836231809925\n ],\n [\n -124.18778238724494,\n 40.888917981387124\n ],\n [\n -124.48671668107546,\n 40.50037600357953\n ],\n [\n -124.4226593323977,\n 40.37035877012454\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Cox, Dennis P. dcox@usgs.gov","contributorId":2766,"corporation":false,"usgs":true,"family":"Cox","given":"Dennis","email":"dcox@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":867133,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pratt, Walden P.","contributorId":88342,"corporation":false,"usgs":true,"family":"Pratt","given":"Walden","email":"","middleInitial":"P.","affiliations":[],"preferred":true,"id":867134,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70219888,"text":"70219888 - 1973 - Oil shale formed in desert environment: Green River Formation, Wyoming","interactions":[],"lastModifiedDate":"2021-04-16T11:15:30.215384","indexId":"70219888","displayToPublicDate":"1973-04-01T06:09:41","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Oil shale formed in desert environment: Green River Formation, Wyoming","docAbstract":"

The oil shale beds of the Wilkins Peak Member of the Green River Formation differ from most of the Green River oil shale of Colorado and Utah because very few of them have varves; they have numerous mud cracks and, locally, desiccation breccias. Many have a copropelic microstructure and contain labial plates and skin fragments of chironomid larvae. Microfossils of some of these oil shale beds include such normally perishable things as first instar midge larvae, a single spiral chloroplast of a green alga, and sporangia of aquatic fungi. Taken together, these features indicate that the oil shale originated from algal ooze that formed on the bottom of very shallow, spring-fed lakes. The algae (dominantly blue-greens) were not planktonic but grew on, and in, the flocculent ooze. At intervals, perhaps tens to hundreds of years, the lake levels fell enough to expose the algal ooze to the air and partial drying. In the resulting rubbery organic gel, the most delicate microorganisms were heat-fixed and thereby preserved as “mummified” tissue.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<1121:OSFIDE>2.0.CO;2","usgsCitation":"Bradley, W.H., 1973, Oil shale formed in desert environment: Green River Formation, Wyoming: GSA Bulletin, v. 84, no. 4, p. 1121-1123, https://doi.org/10.1130/0016-7606(1973)84<1121:OSFIDE>2.0.CO;2.","productDescription":"4 p.","startPage":"1121","endPage":"1123","costCenters":[],"links":[{"id":385137,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Green River Formation","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -111.0443115234375,\n 41.008920735004885\n ],\n [\n -109.00634765625,\n 41.008920735004885\n ],\n [\n -109.00634765625,\n 42.08599350447723\n ],\n [\n -111.0443115234375,\n 42.08599350447723\n ],\n [\n -111.0443115234375,\n 41.008920735004885\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"84","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Bradley, W. H.","contributorId":102452,"corporation":false,"usgs":true,"family":"Bradley","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":814323,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":5222349,"text":"5222349 - 1973 - Salmonellosis in passerine birds in Maryland and West Virginia","interactions":[],"lastModifiedDate":"2025-04-07T15:29:14.886128","indexId":"5222349","displayToPublicDate":"1973-04-01T00:00:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2507,"text":"Journal of Wildlife Diseases","active":true,"publicationSubtype":{"id":10}},"title":"Salmonellosis in passerine birds in Maryland and West Virginia","docAbstract":"

Salmonella typhimurium was responsible for a die-off of evening grosbeaks (Hesperiphona vespertina) at Elkins, West Virginia, and was isolated from a pine siskin (Spinus pinus) collected at the site of a die-off near Baltimore, Maryland.

","language":"English","publisher":"BioOne","doi":"10.7589/0090-3558-9.2.144","usgsCitation":"Locke, L.N., Shillinger, R., and Jareed, T., 1973, Salmonellosis in passerine birds in Maryland and West Virginia: Journal of Wildlife Diseases, v. 9, no. 2, p. 144-145, https://doi.org/10.7589/0090-3558-9.2.144.","productDescription":"2 p.","startPage":"144","endPage":"145","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":194148,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland, 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\"}}]}","volume":"9","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ee4b07f02db5fdf60","contributors":{"authors":[{"text":"Locke, L. N.","contributorId":73539,"corporation":false,"usgs":true,"family":"Locke","given":"L.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":336130,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shillinger, R.B.","contributorId":75647,"corporation":false,"usgs":true,"family":"Shillinger","given":"R.B.","email":"","affiliations":[],"preferred":false,"id":336131,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jareed, T.","contributorId":7379,"corporation":false,"usgs":true,"family":"Jareed","given":"T.","email":"","affiliations":[],"preferred":false,"id":336129,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70200522,"text":"70200522 - 1973 - Photogeology of the dark material in the Taurus-Littrow region of the moon","interactions":[],"lastModifiedDate":"2018-10-23T10:16:37","indexId":"70200522","displayToPublicDate":"1973-03-10T08:48:49","publicationYear":"1973","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Photogeology of the dark material in the Taurus-Littrow region of the moon","docAbstract":"

Regional relations and characteristics of the dark material as observed on photographs of the Taurus-Littrow region of the moon are reviewed to provide a background for interpretations of its nature and origin. The dark material seems to be a surficial deposit that covers mare and highland areas near the southeastern edge of the Serenitatis Basin. The age of the dark material, as deduced from photogeologic analysis, is ambiguous: contact relations near its western edge suggest that it is older than the central light basalts of Mare Serenitatis; evidence elsewhere indicates that it may be younger. The origin of the dark material is also uncertain, and the following alternate hypotheses are briefly considered: (1) thick regolith, (2) dark impact ejecta, (3) pyroclastic blanket, or (4) a material of different origin in different places.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings, 4th Lunar Science Conference","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Lunar Science Conference","conferenceDate":"March 5-8, 1973","conferenceLocation":"Houston, TX","language":"English","publisher":"Pergamon Press","usgsCitation":"Lucchitta, B.K., 1973, Photogeology of the dark material in the Taurus-Littrow region of the moon, in Proceedings, 4th Lunar Science Conference, v. 1, Houston, TX, March 5-8, 1973, p. 149-162.","productDescription":"14 p.","startPage":"149","endPage":"162","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":358647,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":358646,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://ntrs.nasa.gov/search.jsp?R=19740040066"}],"volume":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Lucchitta, Baerbel K. blucchitta@usgs.gov","contributorId":3649,"corporation":false,"usgs":true,"family":"Lucchitta","given":"Baerbel","email":"blucchitta@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":true,"id":749365,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70208891,"text":"70208891 - 1973 - Fluid-inclusion studies of the fluorspar and gold deposits, Jamestown district, Colorado","interactions":[],"lastModifiedDate":"2020-03-04T12:15:28","indexId":"70208891","displayToPublicDate":"1973-03-04T12:03:02","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Fluid-inclusion studies of the fluorspar and gold deposits, Jamestown district, Colorado","docAbstract":"

The Jamestown district, Boulder County, Colorado, is a major producer of fluorspar; prior to 1940, gold, gold-telluride, and lead-silver ores were mined. Fluorite occurs as a primary mineral in phases of the composite sodic granite stock at Jamestown and in breccia zones, stockworks, and pipe-shaped bodies in and adjacent to the stock. Gold and telluride mineralization occurs with and without fluorite in veins peripheral to the stock. A great variety of fluid-inclusion types is present in the district, reflecting chemically and physically diverse fluids. Fluid inclusions in early-stage quartz from the fluorspar deposits have filling temperatures of 250 degrees to 375 degrees C, salinities of 20 to 30%, and boiling is indicated at many locations. Most inclusions associated with the main fluorite stage have salinities of at least 26% to more than 50% and filling temperatures in the range of 250 degrees to 350 degrees C. Probable cognate fluorite on the inclusion walls and as many as ten daughter minerals precipitated from some primary inclusions in fluorite attest to the presence of salt and CaF 2 -rich polycomponent fluorspar-depositing fluids. Carbon dioxide-rich liquids and vapors were present during and after the main period of fluorspar deposition.

Gold-bearing veins contain fluid inclusions indicating that two fundamentally different types of fluids were present. Inclusions in pregold quartz and fluorite have filling temperatures which range up to 375 degrees C, and most have very high salinities comparable to those from the fluorspar deposits, suggesting that early quartz and fluorite of the gold-bearing veins was roughly contemporaneous with the main period of fluorspar deposition. Fluid inclusion and other thermometric data (Kelly and Goddard, 1969) suggest that gold and telluride deposition occurred at temperatures below 300 degrees C. Fluid inclusions most directly associated with gold deposition have filling temperatures in the range 205 degrees to 270 degrees C and have about 4% salinity. These data suggest that the gold-bearing fluids either evolved from the fluorite-bearing fluids or were later unrelated hydrothermal pulses introduced on reopened structures.

Boiling occurred at many locations that were at relatively high elevations or adjacent to the sodic granite stock. From the interpretation that boiling occurred and from the heterogeneity of CO 2 contents, we deduce that fluid pressures were low and variable, commonly near 150 bars, but ranging to as much as approximately 500 bars when CO 2 pressures were high; these determinations are compatible with the depth of cover estimated from geomorphic reconstruction using the Flattop peneplain. The absence of strong thermal or salinity zonation of fluids relative to the outcropping stock suggests that fluids were emanating from a larger intrusive body at depth.

","language":"English","publisher":"GeoScienceWorld","doi":"10.2113/gsecongeo.68.8.1247","usgsCitation":"Nash, J.T., and Cunningham, C.G., 1973, Fluid-inclusion studies of the fluorspar and gold deposits, Jamestown district, Colorado: Economic Geology, v. 68, no. 8, p. 1247-1262, https://doi.org/10.2113/gsecongeo.68.8.1247.","productDescription":"16 p.","startPage":"1247","endPage":"1262","costCenters":[],"links":[{"id":372903,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"Jamestown district","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.44746398925781,\n 40.06913905733146\n ],\n [\n -105.32936096191406,\n 40.06913905733146\n ],\n [\n -105.32936096191406,\n 40.14948820651523\n ],\n [\n -105.44746398925781,\n 40.14948820651523\n ],\n [\n -105.44746398925781,\n 40.06913905733146\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"68","issue":"8","noUsgsAuthors":false,"publicationDate":"1973-12-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Nash, J. Thomas","contributorId":26306,"corporation":false,"usgs":true,"family":"Nash","given":"J.","email":"","middleInitial":"Thomas","affiliations":[],"preferred":false,"id":783850,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cunningham, C. G.","contributorId":76741,"corporation":false,"usgs":true,"family":"Cunningham","given":"C.","middleInitial":"G.","affiliations":[],"preferred":false,"id":783851,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70208888,"text":"70208888 - 1973 - Geochemical studies in the Park City district; I, ore fluids in the Mayflower mine ","interactions":[],"lastModifiedDate":"2020-03-04T11:46:50","indexId":"70208888","displayToPublicDate":"1973-03-04T11:33:20","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical studies in the Park City district; I, ore fluids in the Mayflower mine ","docAbstract":"

Ore bodies in the Mayflower mine, Park City district, Utah, are localized along a normal fault zone which cuts Mississippian sedimentary and Tertiary intrusive rocks. Fissure filling and replacement Pb-Zn-Cu-Ag-Au mineralization occurs in both sedimentary and intrusive host rocks over a known vertical distance of 3,000 feet. The paragenesis of three major recognized veins in the mine is nearly the same, consisting of early quartz, anhydrite, hematite, and pyrite + or - chalcopyrite, followed by sphalerite and galena, grading into pyrite + chalcopyrite + hematite, in turn followed by quartz + carbonate and minor anhydrite, followed by sphalerite and chalcopyrite. Deep, early veins outside of the Mayflower ore zone are characterized by quartz, K-feldspar, biotite, pyrite, and anhydrite, and some also contain magnetite, amphibole or chalcopyrite; these veins contain halite-bearing and gas-rich inclusions which are not known from the ore zone. The deep, early fluids had 34 to 44% salinity, homogenization temperatures of 315 degrees to 430 degrees C, and at times were boiling. Fluid inclusions in samples from the three ore-bearing veins, which contain only simple two-phase inclusions with consistent phase proportions, indicate a marked change in the fluids prior to ore deposition. Homogenization temperatures range from 220 degrees to 300 degrees C, and probably require a pressure correction of approximately + 10 degrees C. Freezing tests indicate salinities in the range 0.3 to 11 wt %NaCl equivalent; no CO 2 -bearing phases were detected at reduced temperatures. Near-surface veins, presumably contemporaneous with the Mayflower ore zone, show evidence for boiling and suggest that there was approximately 90 bars pressure at the present Mayflower vein outcrop. The distribution of fluid densities, temperatures, boiling, and key minerals in time and space indicates a dramatic change from very hot dense post-magmatic fluids to cooler, relatively low salinity fluids at the onset of economic basemetal deposition, probably concurrent with normal faulting. The changes in the physical properties of the hydrothermal fluids are believed to reflect the structural and magmatic evolution of the area.

","language":"English","publisher":"GeoScienceWorld","doi":"10.2113/gsecongeo.68.1.34","usgsCitation":"Nash, J.T., 1973, Geochemical studies in the Park City district; I, ore fluids in the Mayflower mine : Economic Geology, v. 68, no. 1, p. 34-51, https://doi.org/10.2113/gsecongeo.68.1.34.","productDescription":"18 p.","startPage":"34","endPage":"51","costCenters":[],"links":[{"id":372899,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Mayflower mine","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -111.59500122070312,\n 40.52319489128985\n ],\n [\n -111.28326416015625,\n 40.52319489128985\n ],\n [\n -111.28326416015625,\n 40.763901280945866\n ],\n [\n -111.59500122070312,\n 40.763901280945866\n ],\n [\n -111.59500122070312,\n 40.52319489128985\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"68","issue":"1","noUsgsAuthors":false,"publicationDate":"1973-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Nash, J. Thomas","contributorId":26306,"corporation":false,"usgs":true,"family":"Nash","given":"J.","email":"","middleInitial":"Thomas","affiliations":[],"preferred":false,"id":783844,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70208822,"text":"70208822 - 1973 - Basement ages and basement depths in the eastern equatorial pacific from Deep Sea Drilling Project Legs 5, 8, 9, and 16","interactions":[],"lastModifiedDate":"2020-03-02T13:53:51","indexId":"70208822","displayToPublicDate":"1973-03-02T13:52:39","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Basement Ages and Basement Depths in the Eastern Equatorial Pacific from Deep Sea Drilling Project Legs 5, 8, 9, and 16","title":"Basement ages and basement depths in the eastern equatorial pacific from Deep Sea Drilling Project Legs 5, 8, 9, and 16","docAbstract":"

Recent literature contains numerous references to basement ages and basement depths determined by the Deep Sea Drilling Project. The data are derived from a variety of sources, many of them inadequately documented or preliminary, and are not uncommonly inaccurate or conflicting. In this paper we present tabulations of basement ages and depths from DSDP Legs 5, 8, 9, and 16 in the eastern equatorial Pacific, refer them to the latest biostratigraphic time scale, and document and discuss their error limits. We recommend that in future use of this type of data a similar practice be adopted and that the precise source of data, time scale used, and procedures for determining ages and errors be clearly identified in order to avoid confusion. Based on the data presented here, we also give the relations between basement age, distance from the spreading center, and basement depth. The errors inherent in the data cause these relations to be very general and to have less resolution than ascribed to them by some previous investigators.

","language":"English","publisher":"GSA","doi":"10.1130/0016-7606(1973)84<2361:BAABDI>2.0.CO;2","usgsCitation":"Van Andel, T.H., and Bukry, D., 1973, Basement ages and basement depths in the eastern equatorial pacific from Deep Sea Drilling Project Legs 5, 8, 9, and 16: GSA Bulletin, v. 84, no. 7, p. 2361-2379, https://doi.org/10.1130/0016-7606(1973)84<2361:BAABDI>2.0.CO;2.","productDescription":"9 p.","startPage":"2361","endPage":"2379","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":372784,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Pacific Ocean","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -125.859375,\n 41.64007838467894\n ],\n [\n -157.32421875,\n 40.3130432088809\n ],\n [\n -156.62109374999997,\n -1.0546279422758742\n ],\n [\n -90.703125,\n 5.266007882805498\n ],\n [\n -95.80078125,\n 23.241346102386135\n ],\n [\n -125.859375,\n 41.64007838467894\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"84","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Van Andel, T. H.","contributorId":68038,"corporation":false,"usgs":true,"family":"Van Andel","given":"T.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":783496,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bukry, David 0000-0003-4540-890X dbukry@usgs.gov","orcid":"https://orcid.org/0000-0003-4540-890X","contributorId":3550,"corporation":false,"usgs":true,"family":"Bukry","given":"David","email":"dbukry@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":783497,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70200643,"text":"70200643 - 1973 - Stages in the P-T path of ascending basalt magma: an example from San Quintin, Baja California","interactions":[],"lastModifiedDate":"2018-10-25T14:32:33","indexId":"70200643","displayToPublicDate":"1973-03-01T14:31:24","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1336,"text":"Contributions to Mineralogy and Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Stages in the P-T path of ascending basalt magma: an example from San Quintin, Baja California","docAbstract":"

Late Pleistocene or Recent lavas from San Quintin, Baja California are basanitoids and alkali basalts. The surface quench temperatures of the lavas average 1 005° C with log fO2\">fO2fO2=−11.4, as deduced from the groundmass Fe-Ti oxides. Spinel lherzolite xenoliths and megacrysts of augite and andesine have been found in lava flows and cinder deposits. Using analytical data on the rocks and minerals and simple thermodynamic expressions, the pressures and temperatures of equilibration of lavas and xenoliths, megacrysts and phenocrysts have been calculated. The lavas could have been in equilibrium with lherzolite at 1 330–1 410° C and 27.5–31.6 kb, the more silica-poor liquid having the higher values. The basanitoid could have equilibrated with the megacrysts at about 10.5 kb and with phenocrysts at about 1.4 kb and 1130° C. The variation in composition of the lavas may be explained by a rising zone of melting within the mantle, the most silica-poor liquid having the deepest source. The source of the San Quintin basalts is probably related to spreading of the ocean floor in the Gulf of California.

","language":"English","publisher":"Springer-Verlag","doi":"10.1007/BF00377648","usgsCitation":"Bacon, C.R., 1973, Stages in the P-T path of ascending basalt magma: an example from San Quintin, Baja California: Contributions to Mineralogy and Petrology, v. 41, no. 1, p. 1-22, https://doi.org/10.1007/BF00377648.","productDescription":"22 p.","startPage":"1","endPage":"22","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":358828,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Mexico","otherGeospatial":"Baja California, San Quintin","volume":"41","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Bacon, Charles R. 0000-0002-2165-5618 cbacon@usgs.gov","orcid":"https://orcid.org/0000-0002-2165-5618","contributorId":2909,"corporation":false,"usgs":true,"family":"Bacon","given":"Charles","email":"cbacon@usgs.gov","middleInitial":"R.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":749832,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70241578,"text":"70241578 - 1973 - Evidence for Quaternary movement on the McKinley strand of the Denali fault in the Delta River area, Alaska","interactions":[],"lastModifiedDate":"2023-03-23T17:31:16.292229","indexId":"70241578","displayToPublicDate":"1973-03-01T12:17:29","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Evidence for Quaternary movement on the McKinley strand of the Denali fault in the Delta River area, Alaska","docAbstract":"

Offset Holocene alluvial fans and drainages along the McKinley strand of the Denali fault near the Delta River in the east-central Alaska Range indicate as much as 50 to 60 m of right-lateral displacement during the last 10,000 yrs. Vertical movement of 6 to 10 m during the same time interval is reflected by south-facing scarps along the trace of the fault. All but possibly 1 m of the lateral movement is thought to predate the 1830 neoglacial ice advance. Older drainages have been offset in a right-lateral sense since early Wisconsin or Illinoian time by as much as 6.5 km or, alternatively, by as little as 1 km.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<939:EFQMOT>2.0.CO;2","usgsCitation":"Stout, J.H., Brady, J., Weber, F., and Page, R., 1973, Evidence for Quaternary movement on the McKinley strand of the Denali fault in the Delta River area, Alaska: Geological Society of America Bulletin, v. 84, no. 3, p. 939-948, https://doi.org/10.1130/0016-7606(1973)84<939:EFQMOT>2.0.CO;2.","productDescription":"9 p.","startPage":"939","endPage":"948","costCenters":[],"links":[{"id":414634,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Delta River, Denali fault, McKinley strand","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -151.203280537446,\n 64.96664475615233\n ],\n [\n -151.203280537446,\n 63.08612846985622\n ],\n [\n -143.15030202182086,\n 63.08612846985622\n ],\n [\n -143.15030202182086,\n 64.96664475615233\n ],\n [\n -151.203280537446,\n 64.96664475615233\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Stout, J. H.","contributorId":23989,"corporation":false,"usgs":true,"family":"Stout","given":"J.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":867379,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brady, J.B.","contributorId":58078,"corporation":false,"usgs":true,"family":"Brady","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":867380,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weber, F.","contributorId":69343,"corporation":false,"usgs":true,"family":"Weber","given":"F.","affiliations":[],"preferred":false,"id":867381,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Page, R.A.","contributorId":40197,"corporation":false,"usgs":true,"family":"Page","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":867382,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70241577,"text":"70241577 - 1973 - Lead isotope systematics and uranium depletion in the Granite Mountains, Wyoming","interactions":[],"lastModifiedDate":"2023-03-23T16:54:51.399353","indexId":"70241577","displayToPublicDate":"1973-03-01T11:43:23","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Lead isotope systematics and uranium depletion in the Granite Mountains, Wyoming","docAbstract":"

Isotopic composition and concentration of lead in whole rock and microcline and concentration of uranium and thorium in whole-rock samples of granite from the Granite Mountains, Wyoming, have been determined. The lead isotopic composition in the whole rocks was found to be highly radiogenic with a range in Pb206/Pb204 of 19.58 to 42.27; the corresponding range in microclines is 15.39 to 22.44. A Pb206/Pb204 versus Pb207/Pb204 plot of the whole-rock data yields an apparent isochron age of 2,790 ± 80 m.y. as the time of crystallization of the granite. Chemically determined values of U238/Pb204 in the whole rocks lie between 3.3 and 18.4 and are too low to account for the amount of radiogenic lead observed. A material balance of lead, thorium, and uranium components indicates that an average of approximately 75 percent of the amount of uranium required to produce the radiogenic lead was removed from the rocks, whereas, on the average, there was no apparent loss of thorium. Loss of uranium from the granite is demonstrated to extend at least to a depth of 165 ft in a drill core. The average uranium loss from the samples analyzed represents about 20 g uranium per 1,000 kg of rock that apparently was removed during the Cenozoic and that probably constitutes the major source of uranium now in ore deposits in central Wyoming basins.

The lead isotopic composition of the microclines indicates that lead was mobilized within the granite and was isolated in the feldspar during a thermal event about 1,640 + 120 m.y. ago. However, there is no evidence that the whole rocks themselves became open systems at that time. Whole-rock and microcline isochrons intersect at Pb206/Pb204 and Pb207/Pb204 of 13.77 and 14.86, respectively, indicating a characteristic U238/Pb204 of 8.96 in the source region of the granite magma.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<989:LISAUD>2.0.CO;2","usgsCitation":"Rosholt, J.N., Zartman, R., and Nkomo, I.T., 1973, Lead isotope systematics and uranium depletion in the Granite Mountains, Wyoming: Geological Society of America Bulletin, v. 84, no. 3, p. 989-1002, https://doi.org/10.1130/0016-7606(1973)84<989:LISAUD>2.0.CO;2.","productDescription":"14 p.","startPage":"989","endPage":"1002","costCenters":[],"links":[{"id":414633,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Granite Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -108.44179521564935,\n 42.70666419102372\n ],\n [\n -108.44179521564935,\n 41.902281727982114\n ],\n [\n -106.14565263752439,\n 41.902281727982114\n ],\n [\n -106.14565263752439,\n 42.70666419102372\n ],\n [\n -108.44179521564935,\n 42.70666419102372\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"3","noUsgsAuthors":false,"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":867373,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zartman, R. E.","contributorId":15632,"corporation":false,"usgs":true,"family":"Zartman","given":"R. E.","affiliations":[],"preferred":false,"id":867374,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nkomo, Ignatius T.","contributorId":61044,"corporation":false,"usgs":true,"family":"Nkomo","given":"Ignatius","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":867375,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70241826,"text":"70241826 - 1973 - Earthquakes near Mount St. Helens, Washington","interactions":[],"lastModifiedDate":"2023-03-28T16:21:21.363771","indexId":"70241826","displayToPublicDate":"1973-03-01T11:04:10","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Earthquakes near Mount St. Helens, Washington","docAbstract":"

Seismic monitoring around Mount St. Helens, Washington, for 28 days during the summer of 1970 showed that the frequency of local earthquakes was from 3 to 13 per day and very similar to the activity previously observed near Mount Rainier, Washington. The epicenters of the well-recorded earthquakes form a roughly linear pattern trending northeast from the summit area. This is the only obvious trend in the epicenter distribution. Recent geological investigations have not revealed faults or other major geological discontinuities along this trend. This pattern of epicenters seems to be approximately aligned with the remnants of five ancestral St. Helens plug domes that trend southwest from the summit region.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1973)84<1065:ENMSHW>2.0.CO;2","usgsCitation":"Unger, J.D., and Mills, K.F., 1973, Earthquakes near Mount St. Helens, Washington: Geological Society of America Bulletin, v. 84, no. 3, p. 1065-1067, https://doi.org/10.1130/0016-7606(1973)84<1065:ENMSHW>2.0.CO;2.","productDescription":"3 p.","startPage":"1065","endPage":"1067","costCenters":[],"links":[{"id":414833,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Mount St. Helens","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.26657660816802,\n 46.1738119300216\n ],\n [\n -122.31120856617582,\n 46.18284537394422\n ],\n [\n -122.30022223805068,\n 46.16239914273339\n ],\n [\n -122.30159552906659,\n 46.14099378410063\n ],\n [\n -122.23979743336315,\n 46.13005005252802\n ],\n [\n -122.2102716765275,\n 46.10053872547161\n ],\n [\n -122.18005927418358,\n 46.0953011941468\n ],\n [\n -122.14366706226946,\n 46.10863211354692\n ],\n [\n -122.10246833180074,\n 46.12957418877713\n ],\n [\n -122.07431586598065,\n 46.1524110113763\n ],\n [\n -122.10727485035534,\n 46.18664848529673\n ],\n [\n -122.12032111500399,\n 46.200432558446494\n ],\n [\n -122.12032111500399,\n 46.22086464816954\n ],\n [\n -122.14160712574596,\n 46.238914587098435\n ],\n [\n -122.16632636402733,\n 46.274996657956905\n ],\n [\n -122.22812445973042,\n 46.27784423132695\n ],\n [\n -122.2617700896134,\n 46.244613334622386\n ],\n [\n -122.27275641773821,\n 46.20280877335861\n ],\n [\n -122.26657660816802,\n 46.1738119300216\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"84","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Unger, J. D.","contributorId":10824,"corporation":false,"usgs":true,"family":"Unger","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":867848,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mills, Kay F.","contributorId":303702,"corporation":false,"usgs":false,"family":"Mills","given":"Kay","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":867849,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70160711,"text":"70160711 - 1973 - Change in potentiometric head in the Lloyd Aquifer, Long Island, N.Y","interactions":[],"lastModifiedDate":"2015-12-29T12:21:09","indexId":"70160711","displayToPublicDate":"1973-03-01T06:30:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Change in potentiometric head in the Lloyd Aquifer, Long Island, N.Y","docAbstract":"

The potentiometric surface of the Lloyd aquifer in 1970 locally was as much as 40 feet lower than in 1900. During this period, withdrawal of water from wells was estimated to exceed 300 billion gallons, and the amount of water released from aquifer storage by compressive forces was estimated to be 1.6 billion gallons (about 0.5 percent of the withdrawal). The remainder of the withdrawal was derived from downward leakage through overlying aquifers and confining layers and by the displacement of fresh water in the aquifer by landward movement of salty ground water

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","collaboration":"Work done in cooperation with the Nassau County Department of Public Works, the New York State Department of Environmental Conservation, Division of Water Resources, the Suffolk County Department of Health, and the Suffolk County Water Authority","usgsCitation":"Kimmel, G., 1973, Change in potentiometric head in the Lloyd Aquifer, Long Island, N.Y: Journal of Research of the U.S. Geological Survey, v. 1, no. 3, p. 345-350.","productDescription":"6 p.","startPage":"345","endPage":"350","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":312986,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312985,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue3/report.pdf","text":"Report","size":"23.61 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States of America","state":"New York","city":"Long Island","otherGeospatial":"Lloyd Aquifer","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -73.2183837890625,\n 40.613952441166596\n ],\n [\n -72.83935546875,\n 40.713955826286046\n ],\n [\n -72.8778076171875,\n 41.006848111213614\n ],\n [\n -73.35296630859375,\n 40.96538194577488\n ],\n [\n -73.2183837890625,\n 40.613952441166596\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5683bcbbe4b0a04ef4925e4d","contributors":{"authors":[{"text":"Kimmel, G.E.","contributorId":23976,"corporation":false,"usgs":true,"family":"Kimmel","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":583667,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70160710,"text":"70160710 - 1973 - Concepts of karst development in relation to interpretation of surface runoff","interactions":[],"lastModifiedDate":"2015-12-29T12:11:47","indexId":"70160710","displayToPublicDate":"1973-03-01T06:00:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Concepts of karst development in relation to interpretation of surface runoff","docAbstract":"

Some unusual characteristics of streamflow occur in regions underlain by carbonate rocks. The streamflow characteristics are related to processes of karstification, these processes being dependent on circulation of subsurface water and solution of the rock to form characteristic topography and underground cavern systems.  Very highly cavernous and permeable unsaturated zones tend to keep the water table depressed below land surface in many karst regions, a condition that leads to a low density of perennial streams. The uneven distribution of permeability beneath surface karst streams causes them to lose or gain water, depending on the position of the water table with reference to stream level. The conventional techniques of interpolation and extrapolation that have been reasonably successful in approximating streamflow of ungaged sites in nonkarstic regions have only limited use in karst regions. An understanding of principles of karstification and an understanding of the hydrogeologic framework of a carbonate terrane provide a useful basis for evaluating the streamflow characteristics.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"LeGrand, H.E., and Stringfield, V.T., 1973, Concepts of karst development in relation to interpretation of surface runoff: Journal of Research of the U.S. Geological Survey, v. 1, no. 3, p. 351-360.","productDescription":"10 p.","startPage":"351","endPage":"360","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":312984,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312983,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue3/report.pdf","text":"Report","size":"23.61 MB","linkFileType":{"id":1,"text":"pdf"}}],"volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5683bcbbe4b0a04ef4925e50","contributors":{"authors":[{"text":"LeGrand, H. E.","contributorId":54571,"corporation":false,"usgs":true,"family":"LeGrand","given":"H.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":583664,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stringfield, V. T.","contributorId":72369,"corporation":false,"usgs":true,"family":"Stringfield","given":"V.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":583665,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70160727,"text":"70160727 - 1973 - A photogeologic method for determining the direction of horizontal dilation from patterns of en echelon fracturing","interactions":[],"lastModifiedDate":"2015-12-29T14:16:50","indexId":"70160727","displayToPublicDate":"1973-03-01T02:30:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"A photogeologic method for determining the direction of horizontal dilation from patterns of en echelon fracturing","docAbstract":"

The direction of horizontal dilation in areas characterized by tensional tectonics can be determined from a statistical study of en echelon patterns of fracturing observed on aerial photographs. Relative, to a north-south dilation, nearly all directions of zones of dextral (right-lateral) en echelon fractures lie in the northeast quadrant, while those of sinistral (left-lateral) en echelon fractures concentrate in the
northwest quadrant. Statistically, directions of the two types of zones define unimodal frequency curves that intersect at about 90 degrees to,
and thus define the direction of, applied dilation. The method has been field tested twice and is believed to be suitable for any area
characterized by (1) generally unidirectional horizontal strain and (2) an adequate population of geologically contemporaneous fissures,
including roughly equal development of sinistral and dextral en echelon arrays. Where exposures and aerial photograph coverage are adequate, the direction can be determined quickly to within about 10 degrees accuracy without fieldwork. The method should be useful for preliminary structural studies, especially in inaccessible areas.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Duffield, W.A., and Nakamura, K., 1973, A photogeologic method for determining the direction of horizontal dilation from patterns of en echelon fracturing: Journal of Research of the U.S. Geological Survey, v. 1, no. 3, p. 283-287.","productDescription":"5 p.","startPage":"283","endPage":"287","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":313006,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":313005,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue3/report.pdf","text":"Report","size":"23.61 MB","linkFileType":{"id":1,"text":"pdf"}}],"volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5683bcb9e4b0a04ef4925e45","contributors":{"authors":[{"text":"Duffield, Wendell A.","contributorId":14363,"corporation":false,"usgs":true,"family":"Duffield","given":"Wendell","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":583703,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nakamura, K.","contributorId":78866,"corporation":false,"usgs":true,"family":"Nakamura","given":"K.","email":"","affiliations":[],"preferred":false,"id":583704,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70159981,"text":"70159981 - 1973 - Hydraulic sand-model studies of miscible-fluid flow","interactions":[],"lastModifiedDate":"2015-12-05T15:45:11","indexId":"70159981","displayToPublicDate":"1973-03-01T02:30:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Hydraulic sand-model studies of miscible-fluid flow","docAbstract":"

Hydraulic sand models are useful physical tools in the investigation of the transition zone that occurs between salt and fresh ground water in coastal aquifers. Such models are used to demonstrate the effects of transport mechanisms that influence the dynamic behavior and the shape of the transition zone. The techniques employed in obtaining in-place measurements of solute concentrations are generally the stumbling block in generating data for two-dimensional dispersion systems. Two in-place measurement techniques were used in the studies described: (1) conductivity probes when salt was used as a tracer; and (2) photoelectric cells when organic dye was used as a tracer. Results indicate that conductivity methods are more reliable; however, care must be exercised inasmuch as the probes tend to disturb the fluid flow.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Cahill, J., 1973, Hydraulic sand-model studies of miscible-fluid flow: Journal of Research of the U.S. Geological Survey, v. 1, no. 2, p. 243-250.","productDescription":"8 p.","startPage":"243","endPage":"250","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":311972,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":311971,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue2/report.pdf","text":"Report","size":"26.1 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States of America","volume":"1","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"566418c7e4b06a3ea36c7afb","contributors":{"authors":[{"text":"Cahill, J.M.","contributorId":12509,"corporation":false,"usgs":true,"family":"Cahill","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":581421,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70160732,"text":"70160732 - 1973 - Zeolites in the Miocene Briones Sandstone and related formations of the central Coast Ranges, California","interactions":[],"lastModifiedDate":"2015-12-29T15:34:30","indexId":"70160732","displayToPublicDate":"1973-03-01T02:30:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Zeolites in the Miocene Briones Sandstone and related formations of the central Coast Ranges, California","docAbstract":"

Authigenic zeolites present in the generally tuffaceous Miocene Briones Sandstone and related formations of the central Coast Ranges of California indicate three stages of diagenetic history: (1) Initial alteration of pyroclastic materials to clinoptilolite (and montmorillonite) that is widely distributed in small amounts throughout the region. (2) Subsequent crystallization of heulandite followed by stilbite in fractures at a few places. (3) Widespread development of laumontite in only the southern part of the region, where the sandstone appears to have been downfolded and faulted to greater depths than elsewhere. Laumontite occurs both as pervasive cement of sandstone and as filling of fractures, and was produced through the reaction of interstitial solutions with other zeolites and with such major constituents of the sandstone as plagioclase, montmorillonite, and calcite at temperatures of 100° C or higher. Mordenite was found at only one locality, closely associated with clinoptilolite and opal. Analcite occurs in diverse settings, and its relation to the other zeolites is obscure.  Sparry calcite and coexisting stilbite, laumontite, or analcite in veins seem to make up nonequilibrium assemblages.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Murata, K.J., and Whiteley, K.R., 1973, Zeolites in the Miocene Briones Sandstone and related formations of the central Coast Ranges, California: Journal of Research of the U.S. Geological Survey, v. 1, no. 3, p. 255-265.","productDescription":"11 p.","startPage":"255","endPage":"265","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":313016,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":313015,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue3/report.pdf","text":"Report","size":"23.61 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States of America","state":"California","otherGeospatial":"central Coast Ranges","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.65411376953125,\n 37.85750715625203\n ],\n [\n -122.53601074218751,\n 38.1734326790354\n ],\n [\n -122.34100341796875,\n 38.28993659801203\n ],\n [\n -122.17620849609374,\n 38.28993659801203\n ],\n [\n -121.99493408203125,\n 38.238180119798635\n ],\n [\n -121.72302246093749,\n 37.983174833513395\n ],\n [\n -121.60491943359375,\n 37.49011473195046\n ],\n [\n -121.6351318359375,\n 37.09681225368691\n ],\n [\n -121.91802978515625,\n 36.90597988519294\n ],\n [\n -122.41241455078125,\n 36.96306042436515\n ],\n [\n -122.71453857421875,\n 37.46613860234406\n ],\n [\n -122.65411376953125,\n 37.85750715625203\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5683bcbfe4b0a04ef4925e63","contributors":{"authors":[{"text":"Murata, K. J.","contributorId":18759,"corporation":false,"usgs":true,"family":"Murata","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":583728,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Whiteley, Karen R.","contributorId":150935,"corporation":false,"usgs":false,"family":"Whiteley","given":"Karen","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":583729,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70160717,"text":"70160717 - 1973 - Can satellite photography contribute to topographic mapping?","interactions":[],"lastModifiedDate":"2015-12-29T12:43:06","indexId":"70160717","displayToPublicDate":"1973-03-01T02:30:00","publicationYear":"1973","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Can satellite photography contribute to topographic mapping?","docAbstract":"

Photographs taken on early space missions, in the Gemini-Apollo series, demonstrated the usefulness of the long view for cartography despite acknowledged shortcomings. Later developments, such as ERTS and Skylab, will provide far more data about Earth, but mostly in planimetric form. The third dimension, height, which makes the map representation topographic, is not easy to measure at orbital altitudes. The capability of current and near-future systems is not likely to do much for topographic mapping at scales larger than 1:250,000, but the benefits in planimetric mapping may be better than even the optimists hoped for.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Doyle, F.J., 1973, Can satellite photography contribute to topographic mapping?: Journal of Research of the U.S. Geological Survey, v. 1, no. 3, p. 315-325.","productDescription":"11 p.","startPage":"315","endPage":"325","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":312993,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312992,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1973/vol1issue3/report.pdf","text":"Report","size":"23.61 MB","linkFileType":{"id":1,"text":"pdf"}}],"volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5683bcbae4b0a04ef4925e4b","contributors":{"authors":[{"text":"Doyle, Frederick J.","contributorId":46380,"corporation":false,"usgs":true,"family":"Doyle","given":"Frederick","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":583674,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}