U. S. Geological Survey Party No. 4 mapped the stratigraphy and structure of parts of the Carbon Creek and Ketik anticlines during the summer of 1950. The area, which lies in quadrangles I-19 and I-20 is shown in figure 1. Large-scale maps, compiled from plane-table surveys, give a more detailed picture of two parts of the area, the west plunge of the Carbon Creek anticline (fig. 2) and a segment near the middle of the Ketik anticline (fig. 3).
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70222240","usgsCitation":"Whittington, C.L., and Blazewicz, S.J., 1950, Preliminary report on the stratigraphy and structure of part of the Carbon Creek and Ketik anticlines: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 33, Report: 5 p.; 3 Figures: 53.70 x 25.12 inches or smaller, https://doi.org/10.3133/70222240.","productDescription":"Report: 5 p.; 3 Figures: 53.70 x 25.12 inches or smaller","costCenters":[],"links":[{"id":401501,"rank":5,"type":{"id":29,"text":"Figure"},"url":"https://pubs.usgs.gov/unnumbered/70222240/figure-2.pdf","text":"Figure 2","linkFileType":{"id":1,"text":"pdf"}},{"id":401500,"rank":4,"type":{"id":29,"text":"Figure"},"url":"https://pubs.usgs.gov/unnumbered/70222240/figure-1.pdf","text":"Figure 1","linkFileType":{"id":1,"text":"pdf"}},{"id":401502,"rank":6,"type":{"id":29,"text":"Figure"},"url":"https://pubs.usgs.gov/unnumbered/70222240/figure-3.pdf","text":"Figure 3","linkFileType":{"id":1,"text":"pdf"}},{"id":387348,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74582.htm","linkFileType":{"id":5,"text":"html"}},{"id":401499,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70222240/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":396884,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70222240/report-thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Carbon Creek and Ketik anticlines","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -160.4,\n 69.2667\n ],\n [\n -159.2167,\n 69.2667\n ],\n [\n -159.2167,\n 69.4583\n ],\n [\n -160.4,\n 69.4583\n ],\n [\n -160.4,\n 69.2667\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Whittington, Charles L.","contributorId":52642,"corporation":false,"usgs":true,"family":"Whittington","given":"Charles","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":837494,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blazewicz, Steven J. sjblazewicz@usgs.gov","contributorId":5393,"corporation":false,"usgs":true,"family":"Blazewicz","given":"Steven","email":"sjblazewicz@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":837495,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70222239,"text":"70222239 - 1950 - Preliminary report on the stratigraphy and structure of the upper Oolamnagavik, Kurupa, and Etivluk Rivers area","interactions":[],"lastModifiedDate":"2022-05-31T22:23:24.238182","indexId":"70222239","displayToPublicDate":"1950-11-01T16:54:44","publicationYear":"1950","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5963,"text":"Geological Investigations, Naval Petroleum Reserve No. 4, Alaska","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"32","subseriesTitle":"Preliminary Report","title":"Preliminary report on the stratigraphy and structure of the upper Oolamnagavik, Kurupa, and Etivluk Rivers area","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70222239","usgsCitation":"Chapman, R., Eberlein, G., and Reynolds, C.D., 1950, Preliminary report on the stratigraphy and structure of the upper Oolamnagavik, Kurupa, and Etivluk Rivers area: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 32, Report: 11 p.; 1 Plate: 35.26 x 39.92 inches, https://doi.org/10.3133/70222239.","productDescription":"Report: 11 p.; 1 Plate: 35.26 x 39.92 inches","costCenters":[],"links":[{"id":401498,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222239/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":387347,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74581.htm","linkFileType":{"id":5,"text":"html"}},{"id":396883,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70222239/report-thumb.jpg"},{"id":401496,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70222239/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","otherGeospatial":"upper Oolamnagavik, Kurupa, and Etivluk Rivers area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -156,\n 68.25\n ],\n [\n -154,\n 68.25\n ],\n [\n -154,\n 69\n ],\n [\n -156,\n 69\n ],\n [\n -156,\n 68.25\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Chapman, Robert M.","contributorId":81888,"corporation":false,"usgs":true,"family":"Chapman","given":"Robert M.","affiliations":[],"preferred":false,"id":837491,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eberlein, G. Donald","contributorId":52564,"corporation":false,"usgs":true,"family":"Eberlein","given":"G. Donald","affiliations":[],"preferred":false,"id":837492,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reynolds, Charles D.","contributorId":287141,"corporation":false,"usgs":false,"family":"Reynolds","given":"Charles","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":837493,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70222238,"text":"70222238 - 1950 - Preliminary report on selected sections of Lisburne Limestone, Brooks Range, Alaska","interactions":[],"lastModifiedDate":"2022-05-31T22:09:22.569709","indexId":"70222238","displayToPublicDate":"1950-11-01T16:24:31","publicationYear":"1950","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5963,"text":"Geological Investigations, Naval Petroleum Reserve No. 4, Alaska","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"31","subseriesTitle":"Preliminary Report","title":"Preliminary report on selected sections of Lisburne Limestone, Brooks Range, Alaska","docAbstract":"Location: - This report describes sections of the Lisburne limestone studied in the foothills and northern mountains of the Brooks Range, Alaska. The area covered extends along the front of the range from Sagavanirktok Lake (68°28' N. - 149°25' W.) west to the head of the Kukpowruk River (68°25' N. - 162°40' W.). The southernmost point in the area is at the head of Alapah Creek (68°11' N. - 150°40' W.) and the northernmost point is on Lisburne Ridge just west of the Etivluk River (68°36' N. - 156°40' W.).
Field work was done by the authors at Sagavanirktok Lake, Kanayut Lake, Alapah Creek, the Anaktuvuk and Tiglukpuk Creek, and Chandler Lake. Brief visits were made to the Lisburne Ridge just north and west of the junction of the Nigu and Etivluk Rivers and to outcrops of Lisburne limestone along the Kiligwa River (68°30' N. - 158°35' W.). Data from other areas included in this report were collected by other field parties of the U. S. Geological Survey. A. L. Bowsher, Sr. .and J. T. Dutro, Jr. studied the Lisburne limestone at Kanayut Lake, Nanushuk Lake, and Itkillik Lake in 19491/ .W. W. Patton, Jr. and Irving L. Tailleur described the Lisburne limestone exposed in the northern Brooks Range along the Kiruktagiak River 2/ and the Okokmilage River 3/ in1949, and I. L. Tailleur and Bion H. Kent have supplied data on the Etivluk-Kiligwa Rivers area from their field work of 1950 4/. R. M. Chapman, G. D. Eberlein, and C. D. Reynolds measured sections of Lisburne limestone at Kurupa Lake and on the east fork of the Etivluk River in 1950 5/. E. G. Sable and M. D. Mangus measured the section on Iligluruk Creek near the head of the Kokolik River in 1950 6/,, and Chapman end Sable measured the section at the head of the Kukpowrok River in 1949 7/.
Structural and stratigraphic studies of the rocks in the Siksikpuk and Nanushuk Rivers area were conducted by Navy Oil Unit party No. 2 during the summer field season of 1950. The field party consisted of six men: two geologists; two field assistants; a cook; and a weasel mechanic. Three weasels were used for transportation of equipment and personnel.
The area examined covers approximately 1;000 square miles of the Arctic Foothills province and lies between the Itkillik River on the east and the Chandler River on the west. The area is drained by the Nanushuk, Anaktuvuk, Siksikpuk; and Chandler Rivers.
The mapped area adjoins the Okpikruak and Kiruktagiak Rivers area1/ to the west.
The primary objective of the geologic work in this area was detailed stratigraphic study of pre-Nanushuk group rocks in the Southern Foothills belt as a supplement to the work begun in the Okpikruak and Kiruktagiak Rivers area in 1949. A secondary objective was areal mapping and structural studies for the purpose of delimiting structures favorable for drilling tests of the Lisburne limestone.
Parts of this area had been reconnoitered by members of the U. S. Geological Survey in previous years. In 1901 F. C. Schrader traversed the Anaktuvuk River, In 1945 R. E. Fellows, R. M. Chapman, and C. T. Bressler visited outcrops along the northern margin of the area in the vicinity of the Anaktuvuk River and Kanayut Creek, E. J. Webber and R. L. Detterman examined a few of the cutbanke along the Nanushuk River in 1947 and in 1949. A. L. Bowsher, Sr.; and J, T. Dutro mapped an outlier of Lisburne limestone north of Nanushuk Lake during the 1949 field season.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70222234","usgsCitation":"Keller, A.S., 1950, Preliminary report on the stratigraphy and structure of the upper Siksikpuk - Nanushuk Rivers area: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 30, Report: 21 p.; 6 Plates: 55.58 x 34.26 inches or smaller, https://doi.org/10.3133/70222234.","productDescription":"Report: 21 p.; 6 Plates: 55.58 x 34.26 inches or smaller","costCenters":[],"links":[{"id":396880,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70222234/report-thumb.jpg"},{"id":387345,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74579.htm","linkFileType":{"id":5,"text":"html"}},{"id":401463,"rank":9,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222234/plate-6.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401462,"rank":8,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222234/plate-5.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401461,"rank":7,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222234/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401460,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222234/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401459,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222234/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401458,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222234/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401457,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70222234/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","otherGeospatial":"upper Siksikpuk - Nanushuk Rivers area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -152.2167,\n 69.25\n ],\n [\n -149.950,\n 69.25\n ],\n [\n -149.950,\n 69.75\n ],\n [\n -152.2167,\n 69.75\n ],\n [\n -152.2167,\n 69.25\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Keller, A. Samuel","contributorId":287142,"corporation":false,"usgs":false,"family":"Keller","given":"A.","email":"","middleInitial":"Samuel","affiliations":[],"preferred":false,"id":837487,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70222233,"text":"70222233 - 1950 - Preliminary report on the stratigraphy and structure of the upper Utukok and Kokolik Rivers area","interactions":[],"lastModifiedDate":"2022-05-31T21:41:59.909402","indexId":"70222233","displayToPublicDate":"1950-11-01T15:55:03","publicationYear":"1950","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5963,"text":"Geological Investigations, Naval Petroleum Reserve No. 4, Alaska","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"29","subseriesTitle":"Preliminary Report","title":"Preliminary report on the stratigraphy and structure of the upper Utukok and Kokolik Rivers area","docAbstract":"U. S. Geological Survey Navy Oil Unit Party I examined the surface geology of the area of the upper Utukok River and east fork of the Kokolik River from June 28 to September 3, 1950. The party consisted of six men: E. G. Sable and M. D. Mangus, geologists; C. L. Hummel and F. H. Shannon, field assistants; R. D. Gerard, cook; and L. E. Hall, weasel mechanic. Three weasels were used for transportation in the field.
The area examined approximates 1,000 square miles and is in the extreme southwest corner of Naval Petroleum Reserve No. 4. It is bounded on the west by Iligluruk Creek (east fork of the Kokolik) and on the east by Driftwood Creek. With the exception of Driftwood Creek, major streams were ascended to their headwaters in the De Long Mountains. A traverse southward over the Utukok-Kugururok Rivers divide was successfully completed, providing a \"tie-in\" with the work of Navy Oil Unit Party 7. Several traverses were made 8 miles north of the Driftwood anticline and to the west fork of the Colville River.
The objectives of this part of the summer's work were (1) the geologic mapping and stratigraphic study of the rocks exposed in this area, and (2) measurement of stratigraphic thicknesses of sediments older than those exposed in the Driftwood anticline. Geology was plotted on vertical and trimetrogon oblique aerial photographs. Altitudes were established by altimeter traverses.
The northern part of this area was previously investigated by members of the Navy Oil Unit. In 1947 R. M. Thompson and W. L. Barksdale1/ visited outcrops along the Utukok River, and in 1949 R. M. Chapman and E. G. Sable2/ examined exposures along the Kokolik River. (See fig. 1, index map.)
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70222233","usgsCitation":"Mangus, M.D., 1950, Preliminary report on the stratigraphy and structure of the upper Utukok and Kokolik Rivers area: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 29, Report: 18 p.; 2 Plates: 36.56 x 32.26 inches and 27.26 x 34.29 inches, https://doi.org/10.3133/70222233.","productDescription":"Report: 18 p.; 2 Plates: 36.56 x 32.26 inches and 27.26 x 34.29 inches","costCenters":[],"links":[{"id":387344,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74578.htm","linkFileType":{"id":5,"text":"html"}},{"id":401471,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222233/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401470,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222233/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401469,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70222233/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":396879,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70222233/report-thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"upper Utukok and Kokolik Rivers area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -162,\n 68.45\n ],\n [\n -160.25,\n 68.45\n ],\n [\n -160.25,\n 69\n ],\n [\n -162,\n 69\n ],\n [\n -162,\n 68.45\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Mangus, Marvin D.","contributorId":81556,"corporation":false,"usgs":true,"family":"Mangus","given":"Marvin","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":837486,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70210464,"text":"70210464 - 1950 - Review and photogeologic evaluation of some selected anticlines in the Maybe Creek area","interactions":[],"lastModifiedDate":"2022-05-31T20:19:03.106651","indexId":"70210464","displayToPublicDate":"1950-11-01T15:50:26","publicationYear":"1950","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5963,"text":"Geological Investigations, Naval Petroleum Reserve No. 4, Alaska","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"27","subseriesTitle":"Special Report","title":"Review and photogeologic evaluation of some selected anticlines in the Maybe Creek area","docAbstract":"The following report presents in tabulated form the location, structure, and stratigraphy of various anticlines in the Maybe Creek area which are presently considered to be reasonably favorable drilling sites, References to mere complete sources of information for each anticline are listed.
The accompanying diagram (Fig. 1) presents a generalized stratigraphic picture of the section that would be penetrated by a hole located on the crest of each of these structures. The zonal thicknesses, as shown in this diagram, are average figures and they probably vary from anticline to anticline within this area as they do elsewhere on the North Slope. The thickness of postulated favorable sands and also the stratigraphic horizon reached by each of the proposed 1,500-foot holes may be further affected by the postulated prezone F unconformity. It seems probable that zone E is essentially absent at Umiat. At the Weasel Creek anticline a total of approximately 1,700 feet of zone E sediments appear to be present. This is probably the complete zone E section. Thus the thickness of zone E sediments m4y vary considerably from place to place within the area west of Umiat covered by this report, and these possible variations are not shown in the diagram (Fig. 1). Interpretations of depth and thickness of favorable sands are based on the facies studies of T. G. Payne1/.
Discussions presented are limited to Nanushuk Group rocks and no reference is made nor inference intended as to possible favorable stratigaphic or structural conditions in the older sedimentary rocks.
No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70222232","usgsCitation":"Sable, E., and Mangus, M.D., 1950, Preliminary report on the stratigraphy and structure of the Driftwood anticline: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 28, Report: 9 p.; 70.60 x 25.37 inches and 16.61 x 18.87 inches, https://doi.org/10.3133/70222232.","productDescription":"Report: 9 p.; 70.60 x 25.37 inches and 16.61 x 18.87 inches","costCenters":[],"links":[{"id":401452,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222232/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401451,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70222232/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401450,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70222232/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":396878,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70222232/report-thumb.jpg"},{"id":387343,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74577.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","otherGeospatial":"Driftwood anticline","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -161.45,\n 68.8133\n ],\n [\n -160.8,\n 68.8133\n ],\n [\n -160.8,\n 68.90\n ],\n [\n -161.45,\n 68.90\n ],\n [\n -161.45,\n 68.8133\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Sable, E.G.","contributorId":67076,"corporation":false,"usgs":true,"family":"Sable","given":"E.G.","email":"","affiliations":[],"preferred":false,"id":837484,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mangus, M. D.","contributorId":89522,"corporation":false,"usgs":true,"family":"Mangus","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":837485,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70210447,"text":"70210447 - 1950 - Stratigraphy and structure of the Aupuk anticline","interactions":[],"lastModifiedDate":"2022-05-26T18:53:58.817918","indexId":"70210447","displayToPublicDate":"1950-11-01T15:29:12","publicationYear":"1950","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5963,"text":"Geological Investigations, Naval Petroleum Reserve No. 4, Alaska","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"38","title":"Stratigraphy and structure of the Aupuk anticline","docAbstract":"In addition to conducting an examination of the surface geology in the Southern Foothills province between the Killik River and east fork of the Etivluk River, Navy Oil Unit Party No. 5 was requested to map the Aupuk anticline during the 1950 field season, for the purpose of evaluating the petroleum possibilities thereof from the standpoints of favorable statigraphy and possible structural closure. Field mapping of the Aupuk anticline began on August 1, and about 1 month was devoted to the study. Party personnel consisted of G. Donald Eberlein and Charles D. Reynolds, geologists, W. L. D'Olier and W. D. Carter, field assistants, Richard Olson, camp cook, and Max H. Davis, weasel mechanic. Robort M. Chapman, geologist, visited the party for 1 week early in August to help start the work and shared, with Eberlein, the responsibilities associated with the final compilation of this report.
Three weasels were used for daily transportation to the field and for moving camp. A 10-foot Link boat equipped with 5 hp. outboard motor was used to cross the Colville River. As field work progressed from west to east it became apparent that the camp equipment and weasels would have to be gotten across the Colville River if field work was to be completed by early September. This crossing was effected without incident at a point approximately 10 miles below the confluence of the Kurupa and Colville Rivers on August 26. The party reached Umiat on September 5.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70210447","usgsCitation":"Eberlein, G., Chapman, R., and Reynolds, C.D., 1950, Stratigraphy and structure of the Aupuk anticline: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 38, Report: 13 p.; 3 Plates: 52.43 x 21.77 inches or smaller, https://doi.org/10.3133/70210447.","productDescription":"Report: 13 p.; 3 Plates: 52.43 x 21.77 inches or smaller","costCenters":[],"links":[{"id":401180,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70210447/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401179,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70210447/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401178,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70210447/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":401177,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70210447/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":375317,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74617.htm","linkFileType":{"id":5,"text":"html"}},{"id":396578,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70210447/report_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Aupuk anticline","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -155.3833,\n 68.95\n ],\n [\n -154.150,\n 68.95\n ],\n [\n -154.150,\n 69.1167\n ],\n [\n -155.3833,\n 69.1167\n ],\n [\n -155.3833,\n 68.95\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Eberlein, G. Donald","contributorId":52564,"corporation":false,"usgs":true,"family":"Eberlein","given":"G. Donald","affiliations":[],"preferred":false,"id":836506,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chapman, Robert M.","contributorId":81888,"corporation":false,"usgs":true,"family":"Chapman","given":"Robert M.","affiliations":[],"preferred":false,"id":836507,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reynolds, Charles D.","contributorId":287141,"corporation":false,"usgs":false,"family":"Reynolds","given":"Charles","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":836508,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70210462,"text":"70210462 - 1950 - The subsurface stratigraphy and structure of the Simpson area","interactions":[],"lastModifiedDate":"2022-05-26T21:13:01.061466","indexId":"70210462","displayToPublicDate":"1950-11-01T15:29:07","publicationYear":"1950","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5963,"text":"Geological Investigations, Naval Petroleum Reserve No. 4, Alaska","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"25","subseriesTitle":"Special Report","title":"The subsurface stratigraphy and structure of the Simpson area","docAbstract":"During the summer of 1949, 12 core tests were drilled in the vicinity of Simpson Seep No. 2 on the east side of the Simpson peninsula. These tests were drilled in an attempt to determine the origin of the Simpson oil seeps and to evaluate the petroleum possibilities of the area. These holes failed to satisfy the objective for which they were drilled, but did define a nearly north-south linear ridge of essentially unconsolidated sand enclosed by a monotonous sequence of clay shale. A gas-bearing horizon and good oil shows were encountered on the crest of the ridge in the vicinity of Seep No. 2 during the 1949 drilling season. In November 1949 the Operating Committee approved the drilling of additional core holes in this area to resolve the complex geologic problems encountered by the shellow drilling of the previous season. Four additional tests had been completed by November 1, 1950, and a fifth is now in progress. Drilling completed thus far in 1950 has resulted in more accurate delineation of the sand ridge, and a flowing oil well has been discovered on the west edge of the ridge near Seep No. 3.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70210462","usgsCitation":"Roberts, T.G., and Robinson, F., 1950, The subsurface stratigraphy and structure of the Simpson area: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 25, Report: 7 p.; 2 Enclosures: 30.68 x 53.96 inches and 10.34 x 12.72 inches, https://doi.org/10.3133/70210462.","productDescription":"Report: 7 p.; 2 Enclosures: 30.68 x 53.96 inches and 10.34 x 12.72 inches","costCenters":[],"links":[{"id":401269,"rank":5,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/unnumbered/70210462/enclosure-2.pdf","text":"Enclosure 2","linkFileType":{"id":1,"text":"pdf"}},{"id":401268,"rank":4,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/unnumbered/70210462/enclosure-1.pdf","text":"Enclosure 1","linkFileType":{"id":1,"text":"pdf"}},{"id":401267,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70210462/report.pdf"},{"id":375332,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74628.htm","linkFileType":{"id":5,"text":"html"}},{"id":396723,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70210462/report-thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Simpson area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -154.8083,\n 70.9222\n ],\n [\n -154.550,\n 70.9222\n ],\n [\n -154.550,\n 71.0333\n ],\n [\n -154.8083,\n 71.0333\n ],\n [\n -154.8083,\n 70.9222\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Roberts, Thomas G.","contributorId":287779,"corporation":false,"usgs":false,"family":"Roberts","given":"Thomas","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":837050,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robinson, Florence","contributorId":88016,"corporation":false,"usgs":true,"family":"Robinson","given":"Florence","affiliations":[],"preferred":false,"id":837051,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70210446,"text":"70210446 - 1950 - Review of the stratigraphy and structure of the Gubik anticline","interactions":[],"lastModifiedDate":"2022-05-26T18:34:01.3777","indexId":"70210446","displayToPublicDate":"1950-11-01T15:15:23","publicationYear":"1950","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"seriesTitle":{"id":5963,"text":"Geological Investigations, Naval Petroleum Reserve No. 4, Alaska","active":false,"publicationSubtype":{"id":6}},"seriesNumber":"37","title":"Review of the stratigraphy and structure of the Gubik anticline","docAbstract":"At the direction of Ralph L. Miller, a special study was made of part of the Gubik anticline east of the Colville River. The purpose of this study was two fold; first, the examine the field evidence bearing on east plunge, second, to attempt to establish the continuity of the anticlinal axis from the Colville River to the Anaktuvuk River. The results of this study and a summary of results of the study of part of the anticline west of the Colville River by Stefansson and Thurrell 1/ are presented below.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70210446","usgsCitation":"Fischer, W., and Kover, A.N., 1950, Review of the stratigraphy and structure of the Gubik anticline: Geological Investigations, Naval Petroleum Reserve No. 4, Alaska 37, 3 p., https://doi.org/10.3133/70210446.","productDescription":"3 p.","costCenters":[],"links":[{"id":401176,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/70210446/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":396577,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70210446/report_thumb.jpg"},{"id":375316,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_74616.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","otherGeospatial":"Gubik anticline","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -151.8333,\n 69.4167\n ],\n [\n -151,\n 69.4167\n ],\n [\n -151,\n 69.5\n ],\n [\n -151.8333,\n 69.5\n ],\n [\n -151.8333,\n 69.4167\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Fischer, William A.","contributorId":47787,"corporation":false,"usgs":true,"family":"Fischer","given":"William A.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":836504,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kover, Allan N.","contributorId":90809,"corporation":false,"usgs":true,"family":"Kover","given":"Allan","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":836505,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70208574,"text":"70208574 - 1950 - Alteration and metallization in the Bagdad porphyry copper deposit, Arizona","interactions":[],"lastModifiedDate":"2020-02-17T12:59:43","indexId":"70208574","displayToPublicDate":"1950-11-01T12:52:46","publicationYear":"1950","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":"Alteration and metallization in the Bagdad porphyry copper deposit, Arizona","docAbstract":"The porphyritic to seriate-textured quartz monzonite host-rock at Bagdad was changed by hypogene alteration to a granular rock in which the plagioclase became albitic, orthoclase and quartz increased in amount, and hornblende and book-biotite were recrystallized to pale brown leafy biotite. Hypogene sulfides, pyrite and chalcopyrite, were added during the process of alteration, accompanied in part by sericite. Molybdenite is younger than the chalcopyrite. Locally, the host rock was altered to a quartz-orthoclase-sericite facies containing more quartz and orthoclase than is found in the main alteration facies. Chemical analyses indicate that alteration and mineralization of the host rock resulted in loss of iron, lime, and soda, and addition of sulfur, copper, and potash.Supergene changes include the formation of a chalcocite blanket in late Pliocene or early Pleistocene time. Chalcocite replaced chalcopyrite in preference to pyrite. The chalcocite blanket is truncated by the present erosion surface and its distribution can be recognized from the character of the iron oxide left in the leached cavities. Along some of the fractures and faults, supergene clay is present, consisting of kaolinite and a member of the saponite-montmorillonite group.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.45.7.609","usgsCitation":"Anderson, C., 1950, Alteration and metallization in the Bagdad porphyry copper deposit, Arizona: Economic Geology, v. 45, no. 7, p. 609-628, https://doi.org/10.2113/gsecongeo.45.7.609.","productDescription":"20 p.","startPage":"609","endPage":"628","costCenters":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"links":[{"id":372395,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","city":"Bagdad","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.3291244506836,\n 34.544741936111166\n ],\n [\n -113.14750671386719,\n 34.544741936111166\n ],\n [\n -113.14750671386719,\n 34.6134313663591\n ],\n [\n -113.3291244506836,\n 34.6134313663591\n ],\n [\n -113.3291244506836,\n 34.544741936111166\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"45","issue":"7","noUsgsAuthors":false,"publicationDate":"1950-11-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Anderson, Charles csanderson@usgs.gov","contributorId":139621,"corporation":false,"usgs":true,"family":"Anderson","given":"Charles","email":"csanderson@usgs.gov","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":782570,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70207353,"text":"70207353 - 1950 - The search for new mining districts","interactions":[],"lastModifiedDate":"2019-12-19T14:08:00","indexId":"70207353","displayToPublicDate":"1950-11-01T08:48:22","publicationYear":"1950","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"The search for new mining districts","docAbstract":"No abstract available.
","language":"English","publisher":"The Society of Economic Geologists","doi":"10.2113/gsecongeo.45.7.601","issn":"03610128","usgsCitation":"Nolan, T., 1950, The search for new mining districts: Economic Geology, v. 45, no. 7, p. 601-608, https://doi.org/10.2113/gsecongeo.45.7.601.","productDescription":"8 p. ","startPage":"601","endPage":"608","costCenters":[],"links":[{"id":370395,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"7","noUsgsAuthors":false,"publicationDate":"1950-11-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Nolan, T. B.","contributorId":118355,"corporation":false,"usgs":true,"family":"Nolan","given":"T. B.","affiliations":[],"preferred":false,"id":777796,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215453,"text":"70215453 - 1950 - Discussion of “Annual floods and the partial duration flood series”","interactions":[],"lastModifiedDate":"2020-10-20T17:08:50.078713","indexId":"70215453","displayToPublicDate":"1950-10-20T11:55:22","publicationYear":"1950","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":"Discussion of “Annual floods and the partial duration flood series”","docAbstract":"The writer is interested in finding from this paper a similar idea which he had in mind when engaging in a statistical study of hydrologic data, a part of the Highway Drainage Research Project being carried out in the Department of Civil Engineering, the University of Illinois. However, a complete presentation of the study will be reserved for future publications, and only fragments of thought are discussed here.
In treating hydrologic data for the study of their frequency of recurrence, two phases of study are generally met. One is the frequency of recurrence for the observed distributions, and the other is the corresponding frequency of recurrence for the theoretical distributions of best‐fit. The former is usually required for the purpose of plotting observed data, and hence is called the “plotting positions,” a term used by Foster [1934, p. 1217]. The latter is treated by the mathematical theory of probability, and generally serves as a theoretical interpretation of the observed phenomena.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR031i006p00939","usgsCitation":"Chow, V.T., and Langbein, W.B., 1950, Discussion of “Annual floods and the partial duration flood series”: Eos, Transactions, American Geophysical Union, v. 31, no. 6, p. 393-941, https://doi.org/10.1029/TR031i006p00939.","productDescription":"3 p.","startPage":"393","endPage":"941","costCenters":[],"links":[{"id":379551,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"6","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Chow, Ven Te","contributorId":243424,"corporation":false,"usgs":false,"family":"Chow","given":"Ven","email":"","middleInitial":"Te","affiliations":[],"preferred":false,"id":802229,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Langbein, W. B.","contributorId":102053,"corporation":false,"usgs":true,"family":"Langbein","given":"W.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":802230,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70215452,"text":"70215452 - 1950 - Characteristics of marine uranium-bearing sedimentary rocks","interactions":[],"lastModifiedDate":"2021-04-06T15:07:37.747911","indexId":"70215452","displayToPublicDate":"1950-10-20T11:49:25","publicationYear":"1950","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":"Characteristics of marine uranium-bearing sedimentary rocks","docAbstract":"Many marine sedimentary black shale and phosphorite formations contain 0.01 to 0.02 percent uranium, and one, the alum shale of Sweden, contains as much as 0.5 percent. The published fact that uranium is already being recovered on a laboratory scale from Swedish deposits forcefully suggests that similar deposits in the United States and possibly many other countries may prove to be an important future source of uranium.The marine uranium-bearing black shales are rich in organic matter and sulfides and contain little or no carbonate. The best are found in relatively thin formations of pre-Mesozoic age. The nature of the uranium-bearing mineral or compound is not known. In contrast, nonmarine black shales, as a group, are not uraniferous.All marine phosphorites tested thus far are uraniferous and so too are the phosphatic nodules found in many marine black shales. With some exceptions, the uranium increases in a general way with increase in phosphate content and is believed to be in the phosphate mineral. Like the black shales, the phosphorite formations are characteristically thin; many are associated with unconformities or, in other words, periods during which little else in the way of sediment accumulated.Significant concentrations of uranium in marine sediments other than black shales and phosphorites are thus far known only in beach placer deposits and the gold-bearing conglomerates of the Witwatersrand district, South Africa.Uranium may be found in other types of marine sediments on further prospecting, but especially promising are the sediments rich in organic matter, phosphate, or both, found in relatively thin formations believed to be the entire depositional products of long periods of geologic time. Such formations are most characteristic of those areas where, at the time of deposition, the adjacent land masses were so stable and low that the influx of clastic materials was small; the basin of deposition was large or of such configuration that fine-grained sediments could accumulate; and chemical conditions in the seawater prevented deposition of large amounts of carbonate.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.45.1.35","usgsCitation":"McKelvey, V., and Nelson, J.M., 1950, Characteristics of marine uranium-bearing sedimentary rocks: Economic Geology, v. 45, no. 1, p. 35-53, https://doi.org/10.2113/gsecongeo.45.1.35.","productDescription":"19 p.","startPage":"35","endPage":"53","costCenters":[],"links":[{"id":379550,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"1","noUsgsAuthors":false,"publicationDate":"1950-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"McKelvey, Vincent E.","contributorId":106637,"corporation":false,"usgs":true,"family":"McKelvey","given":"Vincent E.","affiliations":[],"preferred":false,"id":802227,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nelson, John Marshall","contributorId":17323,"corporation":false,"usgs":true,"family":"Nelson","given":"John","email":"","middleInitial":"Marshall","affiliations":[],"preferred":false,"id":802228,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70215450,"text":"70215450 - 1950 - Uranium in pegmatites","interactions":[],"lastModifiedDate":"2021-04-06T15:06:38.726081","indexId":"70215450","displayToPublicDate":"1950-10-20T11:30:55","publicationYear":"1950","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":"Uranium in pegmatites","docAbstract":"Uranium and rare-earth minerals are common accessory minerals in pegmatite deposits. No domestic pegmatites have been found that are rich enough to support an economic mining operation for uranium alone; however, small quantities of uranium minerals may be recovered as by-products of feldspar or mica mining. Madagascar is the only country that has produced appreciable tonnages of uranium minerals from pegmatites.A review of the literature and observations in the domestic pegmatite districts show that the uranium and rare earth minerals generally occur in pegmatites or pegmatite units rich in potash feldspar. Recent mineralogical and structural studies of pegmatites by the U. S. Geological Survey indicate that, on the basis of geologic mapping, these units can be projected laterally and in depth with reasonable accuracy. In most places the mineral content of these units can be estimated with sufficient accuracy for development purposes.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.45.1.12","usgsCitation":"Page, L., 1950, Uranium in pegmatites: Economic Geology, v. 45, no. 1, p. 12-34, https://doi.org/10.2113/gsecongeo.45.1.12.","productDescription":"23 p.","startPage":"12","endPage":"34","costCenters":[],"links":[{"id":379549,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New 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Lincoln R.","contributorId":63367,"corporation":false,"usgs":true,"family":"Page","given":"Lincoln R.","affiliations":[],"preferred":false,"id":802226,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215449,"text":"70215449 - 1950 - Planation of recent reef flats on Okinawa ","interactions":[],"lastModifiedDate":"2020-10-20T16:28:28.407524","indexId":"70215449","displayToPublicDate":"1950-10-20T11:19:26","publicationYear":"1950","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":"Planation of recent reef flats on Okinawa ","docAbstract":"No abstract available.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1950)61[1307:PORRFO]2.0.CO;2","usgsCitation":"MacNeil, F.S., 1950, Planation of recent reef flats on Okinawa : GSA Bulletin, v. 61, no. 11, p. 1307-1308, https://doi.org/10.1130/0016-7606(1950)61[1307:PORRFO]2.0.CO;2.","productDescription":"2 p.","startPage":"1307","endPage":"1308","costCenters":[],"links":[{"id":379548,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Japan","otherGeospatial":"Reefs of Okinawa","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 126.7822265625,\n 25.16517336866393\n ],\n [\n 130.7373046875,\n 25.16517336866393\n ],\n [\n 130.7373046875,\n 29.6880527498568\n ],\n [\n 126.7822265625,\n 29.6880527498568\n ],\n [\n 126.7822265625,\n 25.16517336866393\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"61","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"MacNeil, F. Stearns","contributorId":31760,"corporation":false,"usgs":true,"family":"MacNeil","given":"F.","email":"","middleInitial":"Stearns","affiliations":[],"preferred":false,"id":802225,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215349,"text":"70215349 - 1950 - Uranium-bearing sandstone deposits of the Colorado Plateau","interactions":[],"lastModifiedDate":"2021-04-02T14:44:59.521327","indexId":"70215349","displayToPublicDate":"1950-10-15T15:13:02","publicationYear":"1950","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":"Uranium-bearing sandstone deposits of the Colorado Plateau","docAbstract":"The uranium-bearing sandstone deposits of the Colorado Plateau are commonly referred to as \"carnotite deposits.\" They have been the principal domestic source of uranium, radium, and vanadium. The deposits are largely restricted to a few stratigraphic zones, along which they have a wide but spotty areal distribution. The ore minerals mainly impregnate sandstone, though in places fossil plants are richly mineralized. Most of the ore bodies are small, but have a wide range in size, and within individual deposits the ore has a considerable range in thickness and grade. The deposits are irregularly tabular or lenticular, with their long axes nearly parallel to the bedding, but the ore does not follow the beds in detail.The ore is thought to have been precipitated from ground-water solutions after the enclosing sands had accumulated and before regional deformation. Sedimentary structures that seem to have controlled the movement of these solutions and the features that probably localized the ore deposits are described, and their application as guides to ore finding is explained.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.45.1.1","usgsCitation":"Fischer, R.P., 1950, Uranium-bearing sandstone deposits of the Colorado Plateau: Economic Geology, v. 45, no. 1, p. 1-11, https://doi.org/10.2113/gsecongeo.45.1.1.","productDescription":"11 p.","startPage":"1","endPage":"11","costCenters":[],"links":[{"id":379437,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado, Utah, Wyoming","otherGeospatial":"Colorado Plateau","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -111.97265625,\n 38.048091067457236\n ],\n [\n -104.69970703125,\n 38.048091067457236\n ],\n [\n -104.69970703125,\n 42.97250158602597\n ],\n [\n -111.97265625,\n 42.97250158602597\n ],\n [\n -111.97265625,\n 38.048091067457236\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"45","issue":"1","noUsgsAuthors":false,"publicationDate":"1950-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Fischer, Richard Philip","contributorId":94283,"corporation":false,"usgs":true,"family":"Fischer","given":"Richard","email":"","middleInitial":"Philip","affiliations":[],"preferred":false,"id":801845,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215348,"text":"70215348 - 1950 - An occurrence of saline ground water on Guadalcanal ","interactions":[],"lastModifiedDate":"2020-10-15T20:12:30.65306","indexId":"70215348","displayToPublicDate":"1950-10-15T15:00:09","publicationYear":"1950","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":"An occurrence of saline ground water on Guadalcanal ","docAbstract":"Guadalcanal Island is largely mountainous, but on the north side there is a coastal plain about 40 mi long which averages eight miles in width and stands a about 15 ft above sea level. This plain is composed of the coalesced deltas of several large rivers. Most of the military installations of World War II were located on this plain near its western end. Wells drilled for water supply disclosed a body of saline ground water between the Lunga and Nalimbu Rivers. The saline water probably is ocean water that was incorporated into the sediments as the coastal plain was built. The location and shape of the body of salt water appears to be controlled largely by the permeability of the material.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR031i001p00058","usgsCitation":"Baker, R.C., 1950, An occurrence of saline ground water on Guadalcanal : Eos, Transactions, American Geophysical Union, v. 31, no. 1, p. 58-60, https://doi.org/10.1029/TR031i001p00058.","productDescription":"3 p.","startPage":"58","endPage":"60","costCenters":[],"links":[{"id":379436,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Guadalcanal Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 159.43359375,\n -10.077037154404719\n ],\n [\n 160.8837890625,\n -10.077037154404719\n ],\n [\n 160.8837890625,\n -9.188870084473393\n ],\n [\n 159.43359375,\n -9.188870084473393\n ],\n [\n 159.43359375,\n -10.077037154404719\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"31","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Baker, R. C.","contributorId":79084,"corporation":false,"usgs":true,"family":"Baker","given":"R.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":801844,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215347,"text":"70215347 - 1950 - Geochemistry of ground water","interactions":[],"lastModifiedDate":"2020-10-15T19:56:43.552379","indexId":"70215347","displayToPublicDate":"1950-10-15T14:47:03","publicationYear":"1950","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":"Geochemistry of ground water","docAbstract":"The science of geochemistry is the study of the chemical composition of and actual or possible chemical changes in the crust of the earth. The subdivision of geochemistry concerned with ground water includes study of the nature and amounts of dissolved mineral matter in ground waters, the chemical and geologic changes that influence the kinds and amounts of substances carried in solution, and the chemical relationships between dissolved mineral matter in waters and minerals that make up the rocks in which the waters occur. As . thus defined, the field of geochemistry of ground water is very large. Although much work has been done in geochemistry in general, and in some phases of the geochemistry of ground water, the field remains to a large extent unexplored.
","language":"English","publisher":"Society of Economic Geologist","doi":"10.2113/gsecongeo.45.1.72","usgsCitation":"Hem, J.D., 1950, Geochemistry of ground water: Economic Geology, v. 45, no. 10, p. 72-81, https://doi.org/10.2113/gsecongeo.45.1.72.","productDescription":"10 p.","startPage":"72","endPage":"81","costCenters":[],"links":[{"id":379434,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"10","noUsgsAuthors":false,"publicationDate":"1950-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Hem, John David","contributorId":42577,"corporation":false,"usgs":true,"family":"Hem","given":"John","email":"","middleInitial":"David","affiliations":[],"preferred":false,"id":801843,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215346,"text":"70215346 - 1950 - Comments on the taconic sequence in Pennsylvania ","interactions":[],"lastModifiedDate":"2020-10-15T19:36:54.563566","indexId":"70215346","displayToPublicDate":"1950-10-15T14:30:25","publicationYear":"1950","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":"Comments on the taconic sequence in Pennsylvania ","docAbstract":"No abstract available.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1950)61[133:COTTSI]2.0.CO;2","usgsCitation":"Stose, G.W., 1950, Comments on the taconic sequence in Pennsylvania : GSA Bulletin, v. 81, p. 133-135, https://doi.org/10.1130/0016-7606(1950)61[133:COTTSI]2.0.CO;2.","productDescription":"3 p.","startPage":"133","endPage":"135","costCenters":[],"links":[{"id":379431,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Pennsylvania","otherGeospatial":"Shepardstown","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.2998046875,\n 40.09908414736847\n ],\n [\n -76.6845703125,\n 40.09908414736847\n ],\n [\n -76.6845703125,\n 40.271143686084194\n ],\n [\n -77.2998046875,\n 40.271143686084194\n ],\n [\n -77.2998046875,\n 40.09908414736847\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"81","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Stose, George W.","contributorId":46067,"corporation":false,"usgs":true,"family":"Stose","given":"George","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":801834,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215345,"text":"70215345 - 1950 - Activity Of Paricutin Volcano From August 1, 1948 to June 30, 1949","interactions":[],"lastModifiedDate":"2020-10-15T19:25:28.244133","indexId":"70215345","displayToPublicDate":"1950-10-15T14:19:28","publicationYear":"1950","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":"Activity Of Paricutin Volcano From August 1, 1948 to June 30, 1949","docAbstract":"The present brief summary of activity at Paricutin Volcano, State of Michoacán, Mexico, follows the pattern of the last report on this volcano published in these Transactions late in 1948 [Wilcox and Gutierrez, 1948]. Anticipating the end of his two‐year period of observation at Parícutin in December 1948, Wilcox instructed the junior author, a native Tarascan from the town of San Juan Parangaricutiro, now destroyed, in the processes of keeping detailed diagrammatic records of eruptive activity, of making weather observations, and of outlining the monthly advance of the new lava. On Wilcox's departure the senior author, who had closely followed the series of studies at Paricutin and had frequently visited the Volcano from June 1943 onward, took up the task‐of watching over Paricutin and preparing reports on its activity. During the first six months of 1949 he spent 11 days at the Volcano on the following dates: January 25–28, March 29–April 1, and May 18–20. On these visits he checked the elevations of the chief points on the rim of tie cone, using an alidade at known stations, and in addition followed the growth of the lava‐vent mound, variations in the form of the interior of the crater, and any other features that showed change. Further, he discussed with the junior author, the Volcano's activity during the periods between visits and assembled the observational data for formal presentation.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR031i003p00406","usgsCitation":"Fries, C., and Gutierrez, C., 1950, Activity Of Paricutin Volcano From August 1, 1948 to June 30, 1949: Eos, Transactions, American Geophysical Union, v. 31, no. 3, p. 406-418, https://doi.org/10.1029/TR031i003p00406.","productDescription":"13p.","startPage":"406","endPage":"418","costCenters":[],"links":[{"id":379427,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Mexico","state":"Michoacan","otherGeospatial":"Paricutin Volcano","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -102.45849609375,\n 19.264479800497103\n ],\n [\n -102.16735839843749,\n 19.264479800497103\n ],\n [\n -102.16735839843749,\n 19.590844152960923\n ],\n [\n -102.45849609375,\n 19.590844152960923\n ],\n [\n -102.45849609375,\n 19.264479800497103\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"31","issue":"3","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Fries, Carl Jr.","contributorId":86396,"corporation":false,"usgs":true,"family":"Fries","given":"Carl","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":801832,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gutierrez, Celedonio","contributorId":243225,"corporation":false,"usgs":false,"family":"Gutierrez","given":"Celedonio","email":"","affiliations":[],"preferred":false,"id":801833,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70215344,"text":"70215344 - 1950 - Discussion of “The relation of geology to dry weather stream flow in Ohio”","interactions":[],"lastModifiedDate":"2021-01-28T21:24:14.295586","indexId":"70215344","displayToPublicDate":"1950-10-15T13:45:28","publicationYear":"1950","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":"Discussion of “The relation of geology to dry weather stream flow in Ohio”","docAbstract":"The concepts presented in this paper are of great value to the ground‐water hydrologist. They indicate one way to analyze and conveniently use the vast accumulation of stream‐flow records collected by governmental agencies as a tool for geophysical reconnaisance. To be usable as a method of geophysical prospecting for ground water, stream‐flow records must first be transformed into flow‐duration curves. Then, by means of the 90 per cent index, chosen by Cross, or other, more suitable indices, the ground‐water storage characteristics of the surficial deposits of drainage basins can readily be determined. Where there is good indication of extensive groundwater storage, it is probable that large supplies of ground water can be developed for use.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR031i003p00473","usgsCitation":"Cross, W.P., 1950, Discussion of “The relation of geology to dry weather stream flow in Ohio”: Eos, Transactions, American Geophysical Union, v. 31, no. 3, p. 473-474, https://doi.org/10.1029/TR031i003p00473.","productDescription":"2 p.","startPage":"473","endPage":"474","costCenters":[],"links":[{"id":379424,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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\"}}]}","volume":"31","issue":"3","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Cross, William Perry","contributorId":21137,"corporation":false,"usgs":true,"family":"Cross","given":"William","email":"","middleInitial":"Perry","affiliations":[],"preferred":false,"id":801804,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215343,"text":"70215343 - 1950 - Activity of Paricutin Volcano from July 1 to December 31, 1949","interactions":[],"lastModifiedDate":"2020-10-15T18:45:04.781172","indexId":"70215343","displayToPublicDate":"1950-10-15T13:31:02","publicationYear":"1950","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":"Activity of Paricutin Volcano from July 1 to December 31, 1949","docAbstract":"The activity of Parícutin Volcano, State of Michoacan, Mexico, during the second half of 1949 is represented diagrammatically in Figures 1, 2, and 3. An explanatory discussion of these diagrams of eruptive characteristics and a description of the lettered noise types shown on them appeared in an earlier report on this Volcano [Wilcox, 1947], to which the reader is referred. Photographs of two common types of eruptive activity are shown as Figures 4 and 5, and a map outlining the monthly advance of lava during the period covered is given as Figure 6. Altitudes of different points on Paricutin cone are listed in Table 1, and weather data are summarized in Table 3.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR031i005p00732","usgsCitation":"Fries, C., and Gutierrez, C., 1950, Activity of Paricutin Volcano from July 1 to December 31, 1949: Eos, Transactions, American Geophysical Union, v. 31, no. 5, p. 732-740, https://doi.org/10.1029/TR031i005p00732.","productDescription":"9 p.","startPage":"732","endPage":"740","costCenters":[],"links":[{"id":379422,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Mexico","state":"Michoacan","otherGeospatial":"Paricutin Volcano","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -102.45849609375,\n 19.264479800497103\n ],\n [\n -102.16735839843749,\n 19.264479800497103\n ],\n [\n -102.16735839843749,\n 19.590844152960923\n ],\n [\n -102.45849609375,\n 19.590844152960923\n ],\n [\n -102.45849609375,\n 19.264479800497103\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"31","issue":"5","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Fries, Carl Jr.","contributorId":86396,"corporation":false,"usgs":true,"family":"Fries","given":"Carl","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":801802,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gutierrez, Celedonio","contributorId":243225,"corporation":false,"usgs":false,"family":"Gutierrez","given":"Celedonio","email":"","affiliations":[],"preferred":false,"id":801803,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70215339,"text":"70215339 - 1950 - Report of the Committee on Runoff, 1949–1950","interactions":[],"lastModifiedDate":"2020-10-15T18:30:10.542386","indexId":"70215339","displayToPublicDate":"1950-10-15T13:20:39","publicationYear":"1950","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":"Report of the Committee on Runoff, 1949–1950","docAbstract":"The Weather Bureau activities in the runoff field during the 1949–1950 year centered largely around its flood and water supply forecasting activities. A new River Forecast Center was inaugurated at Portland, Oregon in January, 1950 to provide service for the Columbia River Basin and adjacent coastal areas. The first custom‐made model of the electronic flood routing machine has been delivered and is being tested to determine its electrical and operating characteristics. A large portion of the Bureau's investigations during the year were aimed at developing to the fullest all possible applications of existing techniques but considerable effort was devoted to the problem of developing new methods for short‐range forecasting of runoff from melting snow. A technique has been developed which appears to satisfy the requirements but it has not yet been adequately tested. Water supply forecasting activities were continued and the number of forecast points increased to about 300. The Cooperative Snow Investigations, with the Corps of Engineers, continued during the year.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR031i006p00930","usgsCitation":"McDonald, C.C., 1950, Report of the Committee on Runoff, 1949–1950: Eos, Transactions, American Geophysical Union, v. 31, no. 6, p. 930-934, https://doi.org/10.1029/TR031i006p00930.","productDescription":"5 p.","startPage":"930","endPage":"934","costCenters":[],"links":[{"id":379419,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"6","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"McDonald, C. C.","contributorId":69204,"corporation":false,"usgs":true,"family":"McDonald","given":"C.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":801782,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70215334,"text":"70215334 - 1950 - Ground-water problems in the Philadelphia area [Pennsylvania]","interactions":[],"lastModifiedDate":"2020-10-15T18:16:25.879773","indexId":"70215334","displayToPublicDate":"1950-10-15T13:02:29","publicationYear":"1950","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":"Ground-water problems in the Philadelphia area [Pennsylvania]","docAbstract":"Large quantities of ground water are used by the Philadelphia Naval Base and many industries in south Philadelphia, as well as by municipalities near Philadelphia in both Pennsylvania and New Jersey.
The areal contact between unconsolidated sand, gravel, and clay strata of the Atlantic Coastal Plain and consolidated rocks of the Piedmont province extends in a northeast-southwest line through central Philadelphia. This line of contact, the so-called Fall Line, sharply separates the area of highly productive sand and gravel aquifers of the Coastal Plain from the less productive bedrock aquifers of the Piedmont Plateau.
The daily withdrawal of ground water from sand and gravel in the Philadelphia area, including Bristol, Pa., and Trenton, N. J., is approximately 110 million gallons. Wells around Philadelphia yield an additional 13 million gallons a day from consolidated rocks of the Piedmont province. The Raritan formation of Cretaceous age is the principal aquifer for wells in south Philadelphia and the adjacent Camden area. The large quantity of water pumped and the limited extent of this aquifer in the area provide a potentially serious interstate water problem. Ground-water levels in the strategically important Naval Base area have not declined seriously as yet, but increasing withdrawal planned in adjacent New Jersey is expected to lower water levels in south Philadelphia
The Delaware and Schuylkill Rivers are believed to be the chief sources of recharge to the Raritan formation, even though heavy pumping on either side of the Delaware River may be expected to affect water levels on the other side. Recharge appears to be adequate generally for present rates of withdrawal, but further studies are needed for an evaluation of the safe maximum yield of the area.
The chemical quality of ground water pumped from the Raritan formation is satisfactory for most purposes, but periodic analyses indicate that the concentration of dissolved solids is increasing. This deterioration of the chemical quality probably is due to the character of the water and bottom sediments of the Delaware and Schuylkill Rivers. Shallow aquifers in south Philadelphia contain large amounts of gases generated by the decay of river silts and city refuse occupying low areas.
The States of Pennsylvania and New Jersey, together with the municipalities concerned, are coordinating their efforts for a practical solution to the ground-water problems of the Philadelphia area.
","language":"English","publisher":"Society of Economic Geologist","doi":"10.2113/gsecongeo.45.3.210","usgsCitation":"Graham, J., 1950, Ground-water problems in the Philadelphia area [Pennsylvania]: Economic Geology, v. 45, no. 3, p. 210-221, https://doi.org/10.2113/gsecongeo.45.3.210.","productDescription":"12 p.","startPage":"210","endPage":"221","costCenters":[],"links":[{"id":379417,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Pennsylvania","city":"Philadelphia","otherGeospatial":"Philadelphia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -75.5419921875,\n 39.88866516883713\n ],\n [\n -75.311279296875,\n 39.73253798438173\n ],\n [\n -74.827880859375,\n 39.97291055131899\n ],\n [\n -75.1300048828125,\n 40.166281254206545\n ],\n [\n -75.5419921875,\n 39.88866516883713\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"45","issue":"3","noUsgsAuthors":false,"publicationDate":"1950-05-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Graham, Jack B.","contributorId":15182,"corporation":false,"usgs":true,"family":"Graham","given":"Jack B.","affiliations":[],"preferred":false,"id":801756,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}