{"pageNumber":"366","pageRowStart":"9125","pageSize":"25","recordCount":11386,"records":[{"id":58349,"text":"mf773G - 1976 - Distribution and abundance of lead in stream sediments and moraine debris, McCarthy Quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-04-21T16:54:13.993632","indexId":"mf773G","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"773","chapter":"G","title":"Distribution and abundance of lead in stream sediments and moraine debris, McCarthy Quadrangle, Alaska","docAbstract":"<p><span>A geochemical survey was conducted in the McCarthy quadrangle, Alaska, to identify areas containing anomalous concentrations of various metallic and nonmetallic elements. This study incorporates the results of analyses for lead, from 1,453 stream sediment and glacial moraine debris samples collected in the quadrangle, and analyzed by the U.S. Geological Survey between 1961 and 1976 using semiquantitative emission spectrophotometry. In addition, the study includes most of the analytical results of the samples of stream sediment from the White River area, located in the northwestern part of the quadrangle, which were collected and analyzed by the Alaska Division of Mines and Geology (Knaebel, 1971).</span></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf773G","usgsCitation":"Robinson, K., McDougal, C.M., Day, G., and Billings, T., 1976, Distribution and abundance of lead in stream sediments and moraine debris, McCarthy Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 773, 1 Plate: 52.37 x 31.04 inches, https://doi.org/10.3133/mf773G.","productDescription":"1 Plate: 52.37 x 31.04 inches","costCenters":[],"links":[{"id":416131,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0773-G/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":183896,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0773-G/report-thumb.jpg"}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"McCarthy Quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,61 ], [ -144,62 ], [ -141,62 ], [ -141,61 ], [ -144,61 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a05f","contributors":{"authors":[{"text":"Robinson, Keith","contributorId":80277,"corporation":false,"usgs":true,"family":"Robinson","given":"Keith","affiliations":[],"preferred":false,"id":258834,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McDougal, C. M.","contributorId":21129,"corporation":false,"usgs":true,"family":"McDougal","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258832,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Day, G.W.","contributorId":63363,"corporation":false,"usgs":true,"family":"Day","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":258833,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Billings, Theodore","contributorId":92751,"corporation":false,"usgs":true,"family":"Billings","given":"Theodore","affiliations":[],"preferred":false,"id":258835,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":58329,"text":"mf767A - 1976 - Aeromagnetic map of the Tanacross Quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-04-17T19:22:28.940468","indexId":"mf767A","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"767","chapter":"A","title":"Aeromagnetic map of the Tanacross Quadrangle, Alaska","docAbstract":"<p>The aeromagnetic map (sheet 1) of the Tanacross quadrangle was prepared in 1971 and subsequently released by the State of Alaska as an open-file map (Alaska Div. Geology and Geophysics, 1973). The data were collected along north-south traverses spaced at 1.6-km intervals and from an altitude of 300 m above the ground. Compilation was originally in the form of 30 by 15-minute quadrangles at a scale of 1:63,500; these quadrangles have been combined and reduced to form the present map at a scale of 1:250,000. Contour interval is 10, 20, 100, or 500 gammas, depending upon the steepness of local gradients in the Earth's magnetic field.&nbsp;</p><p><br data-mce-bogus=\"1\"></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf767A","usgsCitation":"Griscom, A., 1976, Aeromagnetic map of the Tanacross Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 767, 2 Plates: 27.21 x 26.57 inches and 48.98 x 26.52 inches, https://doi.org/10.3133/mf767A.","productDescription":"2 Plates: 27.21 x 26.57 inches and 48.98 x 26.52 inches","costCenters":[],"links":[{"id":415867,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0767-A/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":415866,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0767-A/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":180914,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0767-A/report-thumb.jpg"}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"Tanacross Quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,63 ], [ -144,64 ], [ -141,64 ], [ -141,63 ], [ -144,63 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aeee4b07f02db691123","contributors":{"authors":[{"text":"Griscom, Andrew","contributorId":23520,"corporation":false,"usgs":true,"family":"Griscom","given":"Andrew","email":"","affiliations":[],"preferred":false,"id":258752,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":59162,"text":"mf765 - 1976 - Reconnaissance geologic map and geochemical analyses of stream-sediment and rock samples of the Anchorage A-7 and A-8 quadrangles, Alaska","interactions":[],"lastModifiedDate":"2012-02-10T00:10:37","indexId":"mf765","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"765","title":"Reconnaissance geologic map and geochemical analyses of stream-sediment and rock samples of the Anchorage A-7 and A-8 quadrangles, Alaska","language":"ENGLISH","doi":"10.3133/mf765","usgsCitation":"Clark, S.H., Yount, M.E., and Bartsch, S., 1976, Reconnaissance geologic map and geochemical analyses of stream-sediment and rock samples of the Anchorage A-7 and A-8 quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 765, 1 map., https://doi.org/10.3133/mf765.","productDescription":"1 map.","costCenters":[],"links":[{"id":104269,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_3908.htm","linkFileType":{"id":5,"text":"html"},"description":"3908"},{"id":180475,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"0","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -150,61 ], [ -150,61.25 ], [ -149.25,61.25 ], [ -149.25,61 ], [ -150,61 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b06e4b07f02db69a070","contributors":{"authors":[{"text":"Clark, S. H. B.","contributorId":95052,"corporation":false,"usgs":true,"family":"Clark","given":"S.","email":"","middleInitial":"H. B.","affiliations":[],"preferred":false,"id":261555,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yount, M. E.","contributorId":76748,"corporation":false,"usgs":true,"family":"Yount","given":"M.","middleInitial":"E.","affiliations":[],"preferred":false,"id":261554,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bartsch, S.R.","contributorId":10097,"corporation":false,"usgs":true,"family":"Bartsch","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":261553,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":58348,"text":"mf773H - 1976 - Distribution and abundance of gold in stream sediments and moraine debris, McCarthy quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-05-17T13:18:27.243772","indexId":"mf773H","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"773","chapter":"H","title":"Distribution and abundance of gold in stream sediments and moraine debris, McCarthy quadrangle, Alaska","docAbstract":"<p>A geochemical survey was conducted in the McCarthy quadrangle Alaska, to identify areas containing anomalous concentrations of various metallic and nonmetallic elements. This study incorporates the results of analyses for gold from 764 stream sediment and glacial moraine debris samples collected in the quadrangle, and analyzed by the U.S. Geological Survey between 1961 and 1976 using atomic absorption spectrophotometry. No analytical results for gold are available for stream sediment samples from the White River area, located in the northeastern part of the quadrangle.&nbsp;</p><p>The accompanying map shows the distribution and relative abundance of gold in stream sediment and glacial moraine debris samples. Geochemical analyses have been grouped and are represented by symbols on a base map, which includes topography and generalized geology. The range of analytical values and the symbol that represents it are shown on the histogram. Graphical representation of analytical values on the map permits easy observation of any large variation resulting from separate or duplicate samples collected at the same or nearby localites.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf773H","usgsCitation":"Robinson, K., O’Leary, R.M., McDougal, C.M., and Billings, T., 1976, Distribution and abundance of gold in stream sediments and moraine debris, McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 773, 1 Plate: 52.08 x 30.92 inches, https://doi.org/10.3133/mf773H.","productDescription":"1 Plate: 52.08 x 30.92 inches","costCenters":[],"links":[{"id":417048,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0773-H/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":183895,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0773-H/report-thumb.jpg"},{"id":417094,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_3937.htm","linkFileType":{"id":5,"text":"html"}}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"McCarthy quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,61 ], [ -144,62 ], [ -141,62 ], [ -141,61 ], [ -144,61 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a0a5","contributors":{"authors":[{"text":"Robinson, Keith","contributorId":80277,"corporation":false,"usgs":true,"family":"Robinson","given":"Keith","affiliations":[],"preferred":false,"id":258830,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Leary, R. M.","contributorId":44894,"corporation":false,"usgs":true,"family":"O’Leary","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258829,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McDougal, C. M.","contributorId":21129,"corporation":false,"usgs":true,"family":"McDougal","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258828,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Billings, Theodore","contributorId":92751,"corporation":false,"usgs":true,"family":"Billings","given":"Theodore","affiliations":[],"preferred":false,"id":258831,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":48297,"text":"ofr76300I - 1976 - Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1976","interactions":[],"lastModifiedDate":"2024-04-08T22:25:24.743774","indexId":"ofr76300I","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"76-300","chapter":"I","title":"Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1976","docAbstract":"<p><span>The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.</span></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr76300I","usgsCitation":"Townshend, J., Papp, J., Moorman, M., Deadmon, C., and Tilton, S., 1976, Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1976: U.S. Geological Survey Open-File Report 76-300, 24 p., https://doi.org/10.3133/ofr76300I.","productDescription":"24 p.","costCenters":[],"links":[{"id":171156,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0300-i/report-thumb.jpg"},{"id":427582,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0300-i/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","city":"Fairbanks","otherGeospatial":"College Observatory","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -148.0653003052681,\n              64.95550985834566\n            ],\n            [\n              -148.0653003052681,\n              64.8015944335609\n            ],\n            [\n              -147.35118897714307,\n              64.8015944335609\n            ],\n            [\n              -147.35118897714307,\n              64.95550985834566\n            ],\n            [\n              -148.0653003052681,\n              64.95550985834566\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abce4b07f02db67350e","contributors":{"authors":[{"text":"Townshend, J.B.","contributorId":30623,"corporation":false,"usgs":true,"family":"Townshend","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":237135,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Papp, J.E.","contributorId":95057,"corporation":false,"usgs":true,"family":"Papp","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":237136,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moorman, M.J.","contributorId":12084,"corporation":false,"usgs":true,"family":"Moorman","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":237132,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Deadmon, C.E.","contributorId":17672,"corporation":false,"usgs":true,"family":"Deadmon","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":237134,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tilton, S.P.","contributorId":15670,"corporation":false,"usgs":true,"family":"Tilton","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":237133,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":58340,"text":"mf767M - 1976 - Composite geochemical map of anomalous copper and molybdenum distribution in the Tanacross Quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-04-18T21:01:30.554693","indexId":"mf767M","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"767","chapter":"M","title":"Composite geochemical map of anomalous copper and molybdenum distribution in the Tanacross Quadrangle, Alaska","docAbstract":"<p>This geochemical map delineates drainage basins in which either anomalous copper, molybdenum, or both copper and molybdenum were detected in at least one of four sample media: <span>(A) the oxide residue (the oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh stream sediment, (C) the ash of streambank sod (mixed organic and inorganic material) collected beneath the water level, and (D) the ash of aquatic bryophytes (mosses). The anomaly patterns were derived from the point-plot maps of copper and molybdenum distribution in the individual sample media (Curtain, Day, O'Leary, Marsh, and Tripp, 1976; Curtain, Day, Carten, Marsh, and Tripp, 1976). Background data were disregarded for each of the two metals. Weakly anomalous data for all media (small black symbols) were assigned the number 2; strongly anomalous data for all media (large black symbols) were assigned the number 3. These new data were then summed or \"stacked\" for each metal so that all sites showing anomalous values in one or more of the sample media had a numerical rating that ranged from 2 (weakly anomalous value in one sample medium) to a possible 12 (strongly anomalous values in all four sample media). The summed data were ranked into three groups shown in the explanation. The drainage basins showing anomalous values were outlined according to these groups. As a final step the composite copper anomaly map was superimposed on that of molybdenum to give this composite copper-molybdenum map.</span></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf767M","usgsCitation":"Curtin, G., Day, G., O’Leary, R.M., Marsh, S., and Tripp, R.B., 1976, Composite geochemical map of anomalous copper and molybdenum distribution in the Tanacross Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 767, 1 Plate: 38.52 x 25.19 inches, https://doi.org/10.3133/mf767M.","productDescription":"1 Plate: 38.52 x 25.19 inches","costCenters":[],"links":[{"id":184542,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0767-M/report-thumb.jpg"},{"id":415960,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0767-M/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"Tanacross Quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,63 ], [ -144,64 ], [ -141,64 ], [ -141,63 ], [ -144,63 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a82a1","contributors":{"authors":[{"text":"Curtin, G.C.","contributorId":89501,"corporation":false,"usgs":true,"family":"Curtin","given":"G.C.","email":"","affiliations":[],"preferred":false,"id":258796,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Day, G.W.","contributorId":63363,"corporation":false,"usgs":true,"family":"Day","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":258794,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"O’Leary, R. M.","contributorId":44894,"corporation":false,"usgs":true,"family":"O’Leary","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258793,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Marsh, S.P.","contributorId":32913,"corporation":false,"usgs":true,"family":"Marsh","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":258792,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tripp, R. B.","contributorId":88707,"corporation":false,"usgs":true,"family":"Tripp","given":"R.","middleInitial":"B.","affiliations":[],"preferred":false,"id":258795,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":58341,"text":"mf767N - 1976 - Composite geochemical map of anomalous lead and zinc distribution in the Tanacross Quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-04-21T16:46:25.120755","indexId":"mf767N","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"767","chapter":"N","title":"Composite geochemical map of anomalous lead and zinc distribution in the Tanacross Quadrangle, Alaska","docAbstract":"<p>This geochemical map shows drainage basins in which either anomalous lead, zinc, or both lead and zinc values were detected in at least one of <span>four sample media:</span><span>&nbsp;(A) the oxide residue (the oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh stream sediment, (C) the ash of streambank sod (mixed organic and inorganic material) collected beneath the water level, and (D) the ash of aquatic bryophytes (mosses). The anomaly patterns were derived from the point-plot maps of lead and zinc distribution in the individual sample media. (Curtin, Day, O'Leary, Marsh, and Tripp, 1976a, b). Background data were disregarded for each of the two metals. Weakly anomalous data for all media (small black symbols) were assigned the number 2; strongly anomalous data for all media (large black symbols) were assigned the number 3. These new data were then summed or \"stacked\" for each metal so that all sites showing anomalous values in one or more of the sample media had a numerical rating that ranged from 2 (weakly anomalous value in one sample media) to a possible 12 (strongly anomalous values in all four sample media). The summed data were ranked into the three groups shown in the explanation. The drainage basins showing anomalous values were outlined according to these groups. As a final step the composite lead anomaly map was then superimposed on that of zinc to give this composite lead-zinc map.&nbsp;</span></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf767N","usgsCitation":"Curtin, G., Day, G., O’Leary, R.M., Tripp, R.B., and Carten, R., 1976, Composite geochemical map of anomalous lead and zinc distribution in the Tanacross Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 767, 1 Plate: 38.47 x 25.02 inches, https://doi.org/10.3133/mf767N.","productDescription":"1 Plate: 38.47 x 25.02 inches","costCenters":[],"links":[{"id":416125,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0767-N/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":184543,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0767-N/report-thumb.jpg"}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"Tanacross Quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,63 ], [ -144,64 ], [ -141,64 ], [ -141,63 ], [ -144,63 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a82a4","contributors":{"authors":[{"text":"Curtin, G.C.","contributorId":89501,"corporation":false,"usgs":true,"family":"Curtin","given":"G.C.","email":"","affiliations":[],"preferred":false,"id":258801,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Day, G.W.","contributorId":63363,"corporation":false,"usgs":true,"family":"Day","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":258799,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"O’Leary, R. M.","contributorId":44894,"corporation":false,"usgs":true,"family":"O’Leary","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258798,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tripp, R. B.","contributorId":88707,"corporation":false,"usgs":true,"family":"Tripp","given":"R.","middleInitial":"B.","affiliations":[],"preferred":false,"id":258800,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Carten, R.B.","contributorId":45770,"corporation":false,"usgs":true,"family":"Carten","given":"R.B.","email":"","affiliations":[],"preferred":false,"id":870170,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":58344,"text":"mf773I - 1976 - Distribution and abundance of arsenic and mercury in stream sediments and moraine debris, McCarthy quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-05-16T15:20:13.521801","indexId":"mf773I","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"773","chapter":"I","title":"Distribution and abundance of arsenic and mercury in stream sediments and moraine debris, McCarthy quadrangle, Alaska","docAbstract":"<p><span>A geochemical survey was conducted in the McCarthy quadrangle Alaska, to identify areas containing anomalous concentrations of various metallic and nonmetallic elements. This study incorporates the results of analyses for arsenic and mercury from 426 and 424 stream sediment and glacial moraine debris samples collected in the quadrangle, and analyzed by the U.S. Geological Survey between 1961 and 1976 using atomic absorption spectrophotometry. No analytical results for arsenic and mercury are available for stream sediment samples from the White River area, located in the northeastern part of the quadrangle.&nbsp;</span></p><p><span>The accompanying map shows the distribution and relative abundance of arsenic and mercury in stream sediment and glacial moraine debris samples. Geochemical analyses have been grouped and are represented by symbols on a base map, which includes topography and generalized geology. The range of analytical values and the symbol that represents it are shown on the histogram. Graphical representation of analytical values on the map permits easy observation of any large variation resulting from separate or duplicate samples collected at the same or nearby localites.&nbsp;&nbsp;</span></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf773I","usgsCitation":"Robinson, K., O’Leary, R.M., McDougal, C.M., and Billings, T., 1976, Distribution and abundance of arsenic and mercury in stream sediments and moraine debris, McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 773, 1 Plate: 52.21 x 36.18 inches, https://doi.org/10.3133/mf773I.","productDescription":"1 Plate: 52.21 x 36.18 inches","costCenters":[],"links":[{"id":417093,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_3938.htm"},{"id":183891,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0773-I/report-thumb.jpg"},{"id":417052,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0773-I/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"McCarthy quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,61 ], [ -144,62 ], [ -141,62 ], [ -141,61 ], [ -144,61 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a13b","contributors":{"authors":[{"text":"Robinson, Keith","contributorId":80277,"corporation":false,"usgs":true,"family":"Robinson","given":"Keith","affiliations":[],"preferred":false,"id":258814,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Leary, R. M.","contributorId":44894,"corporation":false,"usgs":true,"family":"O’Leary","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258813,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McDougal, C. M.","contributorId":21129,"corporation":false,"usgs":true,"family":"McDougal","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258812,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Billings, Theodore","contributorId":92751,"corporation":false,"usgs":true,"family":"Billings","given":"Theodore","affiliations":[],"preferred":false,"id":258815,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":58345,"text":"mf773M - 1976 - Distribution and abundance of arsenic in bedrock, mineralized, vein, and altered rock samples, McCarthy quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-05-16T15:18:43.34109","indexId":"mf773M","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"773","chapter":"M","title":"Distribution and abundance of arsenic in bedrock, mineralized, vein, and altered rock samples, McCarthy quadrangle, Alaska","docAbstract":"<p><span>A geochemical survey was conducted in the McCarthy quadrangle Alaska, to identify areas containing anomalous concentrations of various metallic and nonmetallic elements. This study incorporates the results of analyses for arsenic from 827 rock samples collected in the quadrangle, and analyzed by the U.S. Geological Survey between 1961 and 1976 using semiquantitative emission spectrophotometry. The samples included both unaltered and hydrothermally altered rocks. The hydrothermally altered rock consist of ore grade material, gossans, fault gouge, vein materials, silica-rich boxworks, veins adjacent to faults, and fracture surfaces showing evidence of mineralization. Therefore, the analytical data set may be considered representative of most rock types known to occur in the study area.</span></p><p><span>The accompanying map shows the distribution and relative abundance of arsenic in rocks collected. Geochemical analyses have been grouped and are represented by symbols on a base map, which includes topography and generalized geology. The range of analytical values and the symbol that represents it are shown on the histogram. Graphical representation of analytical values on the map permits easy observation of any large variation resulting from separate or duplicate samples collected at the same or nearby localites. All samples were crushed and ground to pass through a 180 micron opening sieve before being analyzed.&nbsp;</span></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf773M","usgsCitation":"Robinson, K., McDougal, C.M., O’Leary, R.M., and Billings, T., 1976, Distribution and abundance of arsenic in bedrock, mineralized, vein, and altered rock samples, McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 773, 1 Plate: 51.94 x 30.54 inches, https://doi.org/10.3133/mf773M.","productDescription":"1 Plate: 51.94 x 30.54 inches","costCenters":[],"links":[{"id":417092,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_3942.htm","linkFileType":{"id":5,"text":"html"}},{"id":183892,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0773-M/report-thumb.jpg"},{"id":417050,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0773-M/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"McCarthy quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,61 ], [ -144,62 ], [ -141,62 ], [ -141,61 ], [ -144,61 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a143","contributors":{"authors":[{"text":"Robinson, Keith","contributorId":80277,"corporation":false,"usgs":true,"family":"Robinson","given":"Keith","affiliations":[],"preferred":false,"id":258818,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McDougal, C. M.","contributorId":21129,"corporation":false,"usgs":true,"family":"McDougal","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258816,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"O’Leary, R. M.","contributorId":44894,"corporation":false,"usgs":true,"family":"O’Leary","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258817,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Billings, Theodore","contributorId":92751,"corporation":false,"usgs":true,"family":"Billings","given":"Theodore","affiliations":[],"preferred":false,"id":258819,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":58346,"text":"mf773F - 1976 - Distribution and abundance of copper in stream sediments and moraine debris, McCarthy Quadrangle, Alaska","interactions":[],"lastModifiedDate":"2023-04-21T16:45:15.492335","indexId":"mf773F","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"773","chapter":"F","title":"Distribution and abundance of copper in stream sediments and moraine debris, McCarthy Quadrangle, Alaska","docAbstract":"<p>A geochemical survey was conducted in the McCarthy quadrangle, Alaska, to identify areas containing anomalous concentrations of various metallic and nonmetallic elements. This study incorporates the results of analyses for copper, from 1,454 stream sediment and glacial moraine debris samples collected in the quadrangle, and analyzed by the U.S. Geological Survey between 1961 and 1976 using semiquantitative emission spectrophotometry. In addition, the study includes most of the analytical results of the samples of stream sediment from the White River area, located in the northwestern part of the quadrangle, which were collected and analyzed by the Alaska Division of Mines and Geology (Knaebel, 1971).</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf773F","usgsCitation":"Robinson, K., McDougal, C.M., Day, G., and Billings, T., 1976, Distribution and abundance of copper in stream sediments and moraine debris, McCarthy Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 773, 1 Plate: 52.07 x 31.18 inches, https://doi.org/10.3133/mf773F.","productDescription":"1 Plate: 52.07 x 31.18 inches","costCenters":[],"links":[{"id":416123,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/mf/0773-F/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":183893,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/mf/0773-F/report-thumb.jpg"}],"scale":"250000","country":"United States","state":"Alaska","otherGeospatial":"McCarthy Quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,61 ], [ -144,62 ], [ -141,62 ], [ -141,61 ], [ -144,61 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a19f","contributors":{"authors":[{"text":"Robinson, Keith","contributorId":80277,"corporation":false,"usgs":true,"family":"Robinson","given":"Keith","affiliations":[],"preferred":false,"id":258822,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McDougal, C. M.","contributorId":21129,"corporation":false,"usgs":true,"family":"McDougal","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258820,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Day, G.W.","contributorId":63363,"corporation":false,"usgs":true,"family":"Day","given":"G.W.","email":"","affiliations":[],"preferred":false,"id":258821,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Billings, Theodore","contributorId":92751,"corporation":false,"usgs":true,"family":"Billings","given":"Theodore","affiliations":[],"preferred":false,"id":258823,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":58347,"text":"mf773L - 1976 - Distribution and abundance of gold in bedrock, mineralized, vein and altered rock samples, McCarthy Quadrangle, Alaska","interactions":[],"lastModifiedDate":"2012-02-10T00:10:13","indexId":"mf773L","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"773","chapter":"L","title":"Distribution and abundance of gold in bedrock, mineralized, vein and altered rock samples, McCarthy Quadrangle, Alaska","language":"ENGLISH","doi":"10.3133/mf773L","usgsCitation":"Robinson, K., McDougal, C.M., McDanal, S., and Billings, T., 1976, Distribution and abundance of gold in bedrock, mineralized, vein and altered rock samples, McCarthy Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 773, 1 map., https://doi.org/10.3133/mf773L.","productDescription":"1 map.","costCenters":[],"links":[{"id":104275,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_3941.htm","linkFileType":{"id":5,"text":"html"},"description":"3941"},{"id":183894,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"250000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -144,61 ], [ -144,62 ], [ -141,62 ], [ -141,61 ], [ -144,61 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a0aa","contributors":{"authors":[{"text":"Robinson, Keith","contributorId":80277,"corporation":false,"usgs":true,"family":"Robinson","given":"Keith","affiliations":[],"preferred":false,"id":258825,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McDougal, C. M.","contributorId":21129,"corporation":false,"usgs":true,"family":"McDougal","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":258824,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McDanal, S.K.","contributorId":108078,"corporation":false,"usgs":true,"family":"McDanal","given":"S.K.","email":"","affiliations":[],"preferred":false,"id":258827,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Billings, Theodore","contributorId":92751,"corporation":false,"usgs":true,"family":"Billings","given":"Theodore","affiliations":[],"preferred":false,"id":258826,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":48296,"text":"ofr76300H - 1976 - Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: August 1976","interactions":[],"lastModifiedDate":"2024-04-08T21:57:45.565626","indexId":"ofr76300H","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1976","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"76-300","chapter":"H","title":"Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: August 1976","docAbstract":"<p><span>The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.</span></p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr76300H","usgsCitation":"Townshend, J., Papp, J., Moorman, M., Deadmon, C., and Tilton, S., 1976, Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: August 1976: U.S. Geological Survey Open-File Report 76-300, 23 p., https://doi.org/10.3133/ofr76300H.","productDescription":"23 p.","costCenters":[],"links":[{"id":427563,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1976/0300-h/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":171155,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1976/0300-h/report-thumb.jpg"}],"country":"United States","state":"Alaska","city":"Fairbanks","otherGeospatial":"College Observatory","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -148.0653003052681,\n              64.95550985834566\n            ],\n            [\n              -148.0653003052681,\n              64.8015944335609\n            ],\n            [\n              -147.35118897714307,\n              64.8015944335609\n            ],\n            [\n              -147.35118897714307,\n              64.95550985834566\n            ],\n            [\n              -148.0653003052681,\n              64.95550985834566\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abce4b07f02db673785","contributors":{"authors":[{"text":"Townshend, J.B.","contributorId":30623,"corporation":false,"usgs":true,"family":"Townshend","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":237130,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Papp, J.E.","contributorId":95057,"corporation":false,"usgs":true,"family":"Papp","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":237131,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moorman, M.J.","contributorId":12084,"corporation":false,"usgs":true,"family":"Moorman","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":237127,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Deadmon, C.E.","contributorId":17672,"corporation":false,"usgs":true,"family":"Deadmon","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":237129,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tilton, S.P.","contributorId":15670,"corporation":false,"usgs":true,"family":"Tilton","given":"S.P.","email":"","affiliations":[],"preferred":false,"id":237128,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":43706,"text":"ofr76551 - 1976 - Geologic mapping in Alaska, U.S. Geological Survey, post 1930, scales 1:96,000 to 1:250,000","interactions":[{"subject":{"id":43706,"text":"ofr76551 - 1976 - Geologic mapping in Alaska, U.S. Geological Survey, post 1930, scales 1:96,000 to 1:250,000","indexId":"ofr76551","publicationYear":"1976","noYear":false,"title":"Geologic mapping in Alaska, U.S. Geological Survey, post 1930, scales 1:96,000 to 1:250,000"},"predicate":"SUPERSEDED_BY","object":{"id":43740,"text":"ofr77681 - 1977 - Geologic mapping in Alaska: U.S. Geological Survey, post-1930, scales 1:96,000 to 1:250,000","indexId":"ofr77681","publicationYear":"1977","noYear":false,"title":"Geologic mapping in Alaska: U.S. Geological Survey, post-1930, scales 1:96,000 to 1:250,000"},"id":1}],"supersededBy":{"id":43740,"text":"ofr77681 - 1977 - Geologic mapping in Alaska: U.S. Geological Survey, post-1930, scales 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