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,{"id":45130,"text":"b847D - 1936 - Phosphate rock near Maxville, Philipsburg, and Avon, Montana","interactions":[{"subject":{"id":45130,"text":"b847D - 1936 - Phosphate rock near Maxville, Philipsburg, and Avon, Montana","indexId":"b847D","publicationYear":"1936","noYear":false,"chapter":"D","title":"Phosphate rock near Maxville, Philipsburg, and Avon, Montana"},"predicate":"IS_PART_OF","object":{"id":35011,"text":"b847 - 1937 - Contributions to economic geology (short papers and preliminary reports), 1934-36","indexId":"b847","publicationYear":"1937","noYear":false,"title":"Contributions to economic geology (short papers and preliminary reports), 1934-36"},"id":1}],"isPartOf":{"id":35011,"text":"b847 - 1937 - Contributions to economic geology (short papers and preliminary reports), 1934-36","indexId":"b847","publicationYear":"1937","noYear":false,"title":"Contributions to economic geology (short papers and preliminary reports), 1934-36"},"lastModifiedDate":"2022-06-10T20:46:17.694089","indexId":"b847D","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1936","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":306,"text":"Bulletin","code":"B","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"847","chapter":"D","title":"Phosphate rock near Maxville, Philipsburg, and Avon, Montana","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Contributions to economic geology (short papers and preliminary reports), 1934-36 (Bulletin 847)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/b847D","usgsCitation":"Pardee, J.T., 1936, Phosphate rock near Maxville, Philipsburg, and Avon, Montana: U.S. Geological Survey Bulletin 847, 14 p., https://doi.org/10.3133/b847D.","productDescription":"14 p.","startPage":"175","endPage":"188","costCenters":[],"links":[{"id":402074,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_20519.htm"},{"id":93860,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/bul/0847d/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":168964,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/bul/0847d/report-thumb.jpg"}],"country":"United States","state":"Montana","city":"Avon, Maxville, Philipsburg","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -113.311,\n              46.311\n            ],\n            [\n              -113.069,\n              46.311\n            ],\n            [\n              -113.069,\n              46.57\n            ],\n            [\n              -113.311,\n              46.57\n            ],\n            [\n              -113.311,\n              46.311\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4affe4b07f02db697e5b","contributors":{"authors":[{"text":"Pardee, J. T.","contributorId":66220,"corporation":false,"usgs":true,"family":"Pardee","given":"J.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":231165,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":45129,"text":"b847C - 1936 - The Richey-Lambert coal field, Richland and Dawson Counties, Montana","interactions":[{"subject":{"id":45129,"text":"b847C - 1936 - The Richey-Lambert coal field, Richland and Dawson Counties, Montana","indexId":"b847C","publicationYear":"1936","noYear":false,"chapter":"C","title":"The Richey-Lambert coal field, Richland and Dawson Counties, Montana"},"predicate":"IS_PART_OF","object":{"id":35011,"text":"b847 - 1937 - Contributions to economic geology (short papers and preliminary reports), 1934-36","indexId":"b847","publicationYear":"1937","noYear":false,"title":"Contributions to economic geology (short papers and preliminary reports), 1934-36"},"id":1}],"isPartOf":{"id":35011,"text":"b847 - 1937 - Contributions to economic geology (short papers and preliminary reports), 1934-36","indexId":"b847","publicationYear":"1937","noYear":false,"title":"Contributions to economic geology (short papers and preliminary reports), 1934-36"},"lastModifiedDate":"2021-08-17T20:04:02.714552","indexId":"b847C","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1936","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":306,"text":"Bulletin","code":"B","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"847","chapter":"C","title":"The Richey-Lambert coal field, Richland and Dawson Counties, Montana","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/b847C","usgsCitation":"Parker, F., 1936, The Richey-Lambert coal field, Richland and Dawson Counties, Montana: U.S. Geological Survey Bulletin 847, Report: 54 p.; Plate: 40.15 x 37.94 inches, https://doi.org/10.3133/b847C.","productDescription":"Report: 54 p.; Plate: 40.15 x 37.94 inches","costCenters":[],"links":[{"id":388053,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_20518.htm"},{"id":93858,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/bul/0847c/plate-22.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":169170,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/bul/0847c/report-thumb.jpg"},{"id":93859,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/bul/0847c/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Montana","county":"Dawson County, Richland County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -107.89672851562499,\n              46.965259400349275\n            ],\n            [\n              -104.61181640625,\n              46.965259400349275\n            ],\n            [\n              -104.61181640625,\n              48.46563710044979\n            ],\n            [\n              -107.89672851562499,\n              48.46563710044979\n            ],\n            [\n              -107.89672851562499,\n              46.965259400349275\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4affe4b07f02db697deb","contributors":{"authors":[{"text":"Parker, F.S.","contributorId":41498,"corporation":false,"usgs":true,"family":"Parker","given":"F.S.","email":"","affiliations":[],"preferred":false,"id":231164,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":45772,"text":"pp185I - 1936 - Geomorphology of the north flank of the Uinta Mountains","interactions":[],"lastModifiedDate":"2018-01-29T11:20:29","indexId":"pp185I","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1936","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"185","chapter":"I","title":"Geomorphology of the north flank of the Uinta Mountains","docAbstract":"The Uinta Mountains, whose northern margin is almost  coincident with the southern boundary of Wyoming, extend from the Wasatch Range eastward across the northern part of Utah into northwestern Colorado. They were carved out of a large, simple anticlinal fold of sedimentary rocks arched up into essentially their present attitude at the end of the Cretaceous period. The Uinta Mountain group (Uinta quartzite of previous reports) a series of brick-red to purplish-red quartzite and sandstone beds of pre-Cambrian age, aggregating more than 12,000 feet in thickness, makes up the central mass of the range. Flanking the quartzite core and sharing its anticlinal structure are beds of limestone, sandstone, and shale ranging in age from Upper or Middle Cambrian to Upper Cretaceous. These rocks, which have a total thickness of about 15,000 feet, have been eroded from the higher part of the range, so the upturned edges of the harder\nbeds now form hogbacks ranked along the sides of the fold. In places large faults, approximating the regional strike, cut these steeply inclined beds. Gently warped Tertiary sediments, mostly of Eocene age, fill the large Green River Basin, which lies north of the range, to a depth of several thousand feet and lap up on the flanks of the mountains, from which they were chiefly derived.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Shorter contributions to general geology, 1934-35","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"United States Government Printing Office","publisherLocation":"Washington, D.C.","doi":"10.3133/pp185I","usgsCitation":"Bradley, W.H., 1936, Geomorphology of the north flank of the Uinta Mountains: U.S. Geological Survey Professional Paper 185, Report: iv, 47 p.; 1 Plate, https://doi.org/10.3133/pp185I.","productDescription":"Report: iv, 47 p.; 1 Plate","startPage":"163","endPage":"199","numberOfPages":"52","costCenters":[],"links":[{"id":271147,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/pp/0185i/plate-34.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":266797,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/0185i/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":169521,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/0185i/report-thumb.jpg"}],"country":"United States","state":"Colorado, Idaho, Utah, Wyoming","otherGeospatial":"Uinta Mountains","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -0.01638888888888889,38.5 ], [ -0.01638888888888889,0.0011111111111111111 ], [ -0.016666666666666666,0.0011111111111111111 ], [ -0.016666666666666666,38.5 ], [ -0.01638888888888889,38.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c493","contributors":{"authors":[{"text":"Bradley, W. H.","contributorId":102452,"corporation":false,"usgs":true,"family":"Bradley","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":232003,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":34680,"text":"b871 - 1936 - Mineral resources of the region around Boulder Dam","interactions":[],"lastModifiedDate":"2012-02-02T00:09:41","indexId":"b871","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1936","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":306,"text":"Bulletin","code":"B","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"871","title":"Mineral resources of the region around Boulder Dam","language":"ENGLISH","publisher":"U.S. Govt. Print. Off.,","doi":"10.3133/b871","usgsCitation":"Hewett, D.F., Callaghan, E., Moore, B., Nolan, T.B., Rubey, W., and Schaller, W.T., 1936, Mineral resources of the region around Boulder Dam: U.S. Geological Survey Bulletin 871, vi, 197 p. :incl. illus., tables, 14 pl. (part fold.; incl. maps, diagrs.) 3 fold. maps (in pocket) ;23 cm., https://doi.org/10.3133/b871.","productDescription":"vi, 197 p. :incl. illus., tables, 14 pl. (part fold.; incl. maps, diagrs.) 3 fold. maps (in pocket) ;23 cm.","costCenters":[],"links":[{"id":92895,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/bul/0871/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":92896,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/bul/0871/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":92897,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/bul/0871/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":92898,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/bul/0871/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":165871,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/bul/0871/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b01e4b07f02db69853f","contributors":{"authors":[{"text":"Hewett, D. F.","contributorId":19927,"corporation":false,"usgs":true,"family":"Hewett","given":"D.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":213387,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Callaghan, Eugene","contributorId":79855,"corporation":false,"usgs":true,"family":"Callaghan","given":"Eugene","email":"","affiliations":[],"preferred":false,"id":213390,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moore, B.N.","contributorId":70460,"corporation":false,"usgs":true,"family":"Moore","given":"B.N.","email":"","affiliations":[],"preferred":false,"id":213388,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nolan, T. B.","contributorId":71610,"corporation":false,"usgs":true,"family":"Nolan","given":"T.","middleInitial":"B.","affiliations":[],"preferred":false,"id":213389,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rubey, W.W.","contributorId":6426,"corporation":false,"usgs":true,"family":"Rubey","given":"W.W.","affiliations":[],"preferred":false,"id":213385,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schaller, W. T.","contributorId":19518,"corporation":false,"usgs":true,"family":"Schaller","given":"W.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":213386,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70213007,"text":"70213007 - 1936 - The diurnal fluctuation in the ground‐water and flow of the Santa Ana River and its meaning","interactions":[],"lastModifiedDate":"2020-09-08T15:27:29.575745","indexId":"70213007","displayToPublicDate":"1936-09-03T13:34:33","publicationYear":"1936","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"The diurnal fluctuation in the ground‐water and flow of the Santa Ana River and its meaning","docAbstract":"<p>In the time alloted for this subject it will be impossible to discuss, in its entirety, all phases of the methods used in computing the loss of water by transpiration from native plant‐life along the Santa Ana River. The results of this work are published in Bulletin 44 of the Division of Water Resources, State of California. The present paper is confined to a discussion of the diurnal fluctuations that occur in the flow of the Santa Ana River and the adjacent ground‐water.</p><p>On Figure 1 have, been plotted the gage‐height records for a short period (July 5–8, 1935) for eight southern California streams. These records have been selected at random from the large number of records filed in the local office of the United States Geological Survey. Some of these streams have a large drainage‐area, others are small; some are short and steep, others flat and long. The points of measurement range from 15 to 2950 feet above sea‐level. One of the streams (Mojave River) is in the desert‐region; the others drain into the Pacific Ocean. The object of Figure 1 is to demonstrate, that the diurnal fluctuation exists and is, to a large degree, similar at most points of measurement. As a rule, the maximum discharge occurs about 10 o'clock in the morning, and the minimum late in the afternoon. It is readily recognized that these fluctuations are in the main caused by the evaporation and transpiration‐loss in or adjacent to the stream‐channel.</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR017i002p00496","usgsCitation":"Troxell, H.C., 1936, The diurnal fluctuation in the ground‐water and flow of the Santa Ana River and its meaning: Eos, Transactions, American Geophysical Union, v. 17, no. 2, p. 496-504, https://doi.org/10.1029/TR017i002p00496.","productDescription":"9 p.","startPage":"496","endPage":"504","costCenters":[],"links":[{"id":378149,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Santa Ana River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -117.7679443359375,\n              33.858442151927896\n            ],\n            [\n              -117.71026611328125,\n              33.89093747081252\n            ],\n            [\n              -117.77000427246094,\n              33.91202429999497\n            ],\n            [\n              -117.84278869628908,\n              33.86699475113557\n            ],\n            [\n              -117.9045867919922,\n              33.81110228864701\n            ],\n            [\n              -117.93754577636719,\n              33.713488158266806\n            ],\n            [\n              -117.96501159667967,\n              33.646063909385845\n            ],\n            [\n              -117.97050476074219,\n              33.62719851659249\n            ],\n            [\n              -117.94784545898436,\n              33.61919376817004\n            ],\n            [\n              -117.88330078125,\n              33.751176960544875\n            ],\n            [\n              -117.83729553222655,\n              33.830497692052425\n            ],\n            [\n              -117.7679443359375,\n              33.858442151927896\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"17","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Troxell, Harold C.","contributorId":33354,"corporation":false,"usgs":true,"family":"Troxell","given":"Harold","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":797963,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70213006,"text":"70213006 - 1936 - Flow‐duration characteristics of Illinois streams","interactions":[],"lastModifiedDate":"2020-09-03T18:33:45.612937","indexId":"70213006","displayToPublicDate":"1936-09-03T13:27:14","publicationYear":"1936","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":"Flow‐duration characteristics of Illinois streams","docAbstract":"<p><span>The paper entitled “An investigation of the flow‐duration characteristics of North Carolina streams,” by Thorndlke Saville and John Dargan Watson, which was published by the American Geophysical Union in its report of the Fourteenth Annual Meeting in 1933 (pp. 406–425), stimulated the writer, who is familiar with the streams discussed, having been assigned for several years to the United States Geological Survey offices that collected the base data. Knowing that there is a marked similarity in runoff‐characteristics of the western North Carolina streams and also that fairly good similarity is shown by New England streams within reasonable zones, he felt it would be desirable to carry the investigation to a part of the country where stream‐flow characteristics are diverse. The present investigation was therefore made to cover all the long‐time records in Illinois on streams of definite drainage‐area, particular attention being paid to comparisons of records from the same stream. The record on the Rock River at Afton, Wisconsin, was also included. The streams studied are listed in Table 1.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR017i002p00418","usgsCitation":"Morgan, J.H., 1936, Flow‐duration characteristics of Illinois streams: Eos, Transactions, American Geophysical Union, v. 17, no. 2, p. 418-426, https://doi.org/10.1029/TR017i002p00418.","productDescription":"9 p.","startPage":"418","endPage":"426","costCenters":[],"links":[{"id":378148,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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H.","contributorId":9243,"corporation":false,"usgs":true,"family":"Morgan","given":"J.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":797962,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70213005,"text":"70213005 - 1936 - Means of recognizing source beds","interactions":[],"lastModifiedDate":"2020-09-03T18:24:47.283197","indexId":"70213005","displayToPublicDate":"1936-09-03T13:20:57","publicationYear":"1936","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Means of recognizing source beds","docAbstract":"<p><span>Eight characteristics of sediments are considered as possible means of recognizing source beds: 1, quantity of organic matter in the sediments; 2, reducing power, which is a measure of ability of the sediments to reduce chromic acid; 3, color of sediments; 4, volatility of sediments; 5, degree of volatility, which is a measure of the volatility with respect to the organic content; 6, ratio of carbon to nitrogen in the sediments; 7, oxidation factor, which is an index of the state of oxidation of the sediments, and is the ratio of the carbon content to' the reducing power; and, 8, the nitrogen-reduction ratio, which is the ratio of the nitrogen content to the reducing power. Several thousand determinations of these characteristics have been made and averaged from more than 800 lithologic units from many areas in the California, Rocky Mountain, Mid Continent, East Texas, and Gulf Coast oil regions. The thickness of these units ranges from 50 ft. to 500 ft. Each of them has been classified according to its probable richness in source material of petroleum. Nearness to producing zones has been the basis of classification, as it seems more reasonable to assume that oil in general accumulates near where it is generated than to assume that it ordinarily accumulates far from where it is made. Three classes were made: 1, lithologic units within 250 ft. stratigraphically above or below an oil zone and less than 2 miles from an oil field; 2, (a) units within 500 ft. above or below an oil zone and within 15 miles of an oil field (excluding, of course, those that belong to the first class) and (b) units within 250 ft. stratigraphically of a horizon and more than 15 miles distant from an oil field, provided the unit is located within a region in which the horizon is generally productive of oil or yields significant quantity of oily substances when extracted with ether; and, 3, all other beds, viz., those more than 500 ft. above or below an oil horizon or more than 15 miles distant from an oil field and beds at greater distance if they are within 250 ft. of horizons that generally contain oil in the area. These three classes are designated in this report as \" productive,\" \" questionably productive,\" and \" barren.\" \" Productive \" units naturally may contain spine beds that are poor in source material, and \" barren \" units may contain beds that are rich in source material; but, on the whole, the \" productive \" units-because of their nearness to oil zones-are more likely' to be richer in mother substances of petroleum than are the \" barren \" units. Each of the eight characteristics was averaged for each of the three classes of productivity, for each of the five oil areas: California, Rocky Mountains, Mid Continent, East Texas, and Gulf Coast. The average organic content of the \"productive\" and \" barren \" units was found to be approximately the same in each region studied, from which it is inferred that the quantity of organic matter in a sediment probably is not a reliable guide of the ability of the sediments to generate oil. The average reducing power of the \" productive \" beds is slightly greater than that of the \"barren\"; but the difference is so slight that the reducing power, also, probably is not a satisfactory guide to source beds. The color of, the sediments, in general, becomes darker as the organic content of the sediments increases; and, as the organic content seems to be a poor index of source beds, color presumably is not a serviceable means of recognizing source beds. The volatility of the \" productive \" beds is greater than that of the \" barren \" units in each of the five regions, but it differs so much from region to region that it cannot be used as an index of source beds unless the general volatility of the sediments in the region under consideration is known. For example, the average volatility of the \" barren \" units in California and the Rocky Mountain regions is greater than that of the \" productive \" units in the Mid Continent, East Texas, and Gulf Coast areas. The degree of volatility differs less from region to region than does the volatility, and in general exhibits a relationship to productivity equally as good as the volatility. The average ratio of carbon to nitrogen in each of the three regions from which data are available-Rocky Mountains, Mid Continent, and East Texas-is higher for \" productive \" beds than for \" barren \" units, but the ratio differs somewhat from one region to another. The oxidation factor of the \" productive \" units is approximately the same as that of the \" barren \" units in the Rocky Mountain region and in the East Texas region, but not in the Mid Continent region-where the oxidation factor of the \" productive \" units is definitely lower than that of the \" barren \" units. The average nitrogen-reduction ratio of the \" productive \" units is decidedly greater than that of the \" barren \" units in each of the five regions studied; and it, therefore, is the most reliable of the guides studied. Relatively few \" productive \" units have nitrogen-reduction ratios greater than 7.0, and relatively few \" barren \" units have ratios of less than 4.5. A considerable number of both \" productive \" and \" barren \" units have ratios ranging between 4.5 and 7.0, but even between these limits the productive units tend to be more commonly associated with low ratios than are the \" barren \" units. Four of these eight characteristics-volatility, degree of volatility, carbon-nitrogen ratio, and nitrogen-reduction ratio-therefore, give promise of being useful means of recognizing source beds; and one of them, the nitrogen-reduction ratio, is particularly encouraging. Additional studies of these four characteristics, and especially of the nitrogen-reduction ratio, are highly desirable.</span></p>","conferenceTitle":"Drilling and Production Practice 1936","conferenceLocation":"New York, New York","language":"English","publisher":"American Petroleum Institute","usgsCitation":"Trask, P., and Patnode, H., 1936, Means of recognizing source beds, Drilling and Production Practice 1936, New York, New York, p. 368-384.","productDescription":"17 p.","startPage":"368","endPage":"384","costCenters":[],"links":[{"id":378147,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Trask, P.D.","contributorId":12545,"corporation":false,"usgs":true,"family":"Trask","given":"P.D.","email":"","affiliations":[],"preferred":false,"id":797960,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Patnode, H.W.","contributorId":108170,"corporation":false,"usgs":true,"family":"Patnode","given":"H.W.","email":"","affiliations":[],"preferred":false,"id":797961,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70213004,"text":"70213004 - 1936 - The Battle Branch gold mine, Auraria, Georgia","interactions":[],"lastModifiedDate":"2020-09-03T18:05:13.538192","indexId":"70213004","displayToPublicDate":"1936-09-03T12:53:11","publicationYear":"1936","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 Battle Branch gold mine, Auraria, Georgia","docAbstract":"<p><span>The Battle Branch mine, in north-central Georgia, is well known locally for its pockets of exceptionally rich gold ore. During the period from May 24, 1934, to May 20, 1935, 781.97 ounces of bullion, of an average fineness of about 850, was shipped to the mint. The deposit is of the lode type; it consists of many quartz stringers and lenses grouped in three zones in a schistose phase of the Carolina gneiss. Three stages of mineralization are recognized. An early high-temperature stage produced coarsely crystalline silicates, such as garnet, kyanite, tourmaline, biotite, and muscovite, which were probably formed by a recrystallization of the minerals in the country rock. During the intermediate stage ankerite, quartz, and pyrrhotite were formed. The last stage was marked by chlorite, galena, and gold. Throughout the period of mineralization minor amounts of movement in and across the lode occurred. The distribution of the ore shoots is dependent to a large extent upon the distribution of the cross fractures. The ore shoots are pod-shaped bodies, which pinch and swell abruptly. The gold in the rich shoots is contemporaneous with galena and is clearly of hypogene origin.</span></p>","language":"English","publisher":"Society of Economic Geologist","doi":"10.2113/gsecongeo.31.1.73","usgsCitation":"Park, C., and Wilson, R., 1936, The Battle Branch gold mine, Auraria, Georgia: Economic Geology, v. 31, no. 1, p. 73-92, https://doi.org/10.2113/gsecongeo.31.1.73.","productDescription":"20 p.","startPage":"73","endPage":"92","costCenters":[],"links":[{"id":378146,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Georgia","county":"Lumpkin","otherGeospatial":"Battle Branch","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -84.28436279296875,\n              34.38311269824024\n            ],\n            [\n              -83.71170043945312,\n              34.38311269824024\n            ],\n            [\n              -83.71170043945312,\n              34.73822700466421\n            ],\n            [\n              -84.28436279296875,\n              34.73822700466421\n            ],\n            [\n              -84.28436279296875,\n              34.38311269824024\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"31","issue":"1","noUsgsAuthors":false,"publicationDate":"1936-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Park, Charles Frederick","contributorId":236987,"corporation":false,"usgs":false,"family":"Park","given":"Charles Frederick","affiliations":[],"preferred":false,"id":797958,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilson, R.A.","contributorId":50592,"corporation":false,"usgs":true,"family":"Wilson","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":797959,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70213002,"text":"70213002 - 1936 - Degree of reduction of sediments in the East Texas basin as an index of source beds","interactions":[],"lastModifiedDate":"2020-09-03T17:52:20.634769","indexId":"70213002","displayToPublicDate":"1936-09-03T12:30:31","publicationYear":"1936","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Degree of reduction of sediments in the East Texas basin as an index of source beds","docAbstract":"<p><span>The research project on source beds, sponsored jointly by the U. S. Geological Survey and the American Petroleum Institute, for the past 18 months has undertaken a study of the degree of reduction as an index of source beds. As indicated in a previous paper on this same subject presented before the Institute at the Los Angeles meeting, this index has to be tested in several petroliferous provinces before its value can be definitely ascertained. Thus far it has been found to prevail in two petroliferous regions, viz., the Rocky Mountains and the Mid Continent; as sediments regarded as source beds in these areas have been observed commonly to have a relatively high degree of reduction. In this paper this relationship is extended to the East Texas basin, as most of the sediments associated with oil zones there in general have been found to have a comparatively high degree of reduction. The relationship, as in other areas, however, has not been observed to hold invariably. Each succeeding area in which the relationship is found to prevail strengthens the probability that it is real and not anomalous. If it is found to hold in the three remaining petroliferous provinces that are now being studied, viz., California, Gulf Coast, and Appalachian, the probability will be strong that it is a true relationship, with the result that it can be recommended to geologists for consideration in prospecting for oil.</span></p>","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"Drilling and Production Practice","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"Drilling and Production Practice 1936","conferenceLocation":"New York, New York","language":"English","publisher":"American Petroleum Institute","usgsCitation":"Trask, P., and Keyte, W., 1936, Degree of reduction of sediments in the East Texas basin as an index of source beds, <i>in</i> Drilling and Production Practice, New York, New York, p. 360-368.","productDescription":"9 p.","startPage":"360","endPage":"368","costCenters":[],"links":[{"id":378142,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Trask, P.D.","contributorId":12545,"corporation":false,"usgs":true,"family":"Trask","given":"P.D.","email":"","affiliations":[],"preferred":false,"id":797956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Keyte, W.R.","contributorId":239874,"corporation":false,"usgs":false,"family":"Keyte","given":"W.R.","email":"","affiliations":[],"preferred":false,"id":797957,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70213001,"text":"70213001 - 1936 - The channel‐storage method of determining effluent seepage","interactions":[],"lastModifiedDate":"2020-09-03T17:22:03.032834","indexId":"70213001","displayToPublicDate":"1936-09-03T12:15:28","publicationYear":"1936","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"The channel‐storage method of determining effluent seepage","docAbstract":"<p>Some years ago the senior author, in collaboration with Norah Dowell Stearns, undertook to make a monthly inventory of the water‐supply of the Pomperaug River Basin, in Connecticut, from a study of data obtained by A. J. Ellis from 1913 to 1916. For this purpose approximate determinations or estimates were made of the ground‐water runoff, that is, of the part of the daily discharge of the river that consisted of water derived from the zone of saturation by effluent seepage. The determinations or estimates were essentially based on the assumption that after a week of fair weather the storm‐water was all discharged and that until the next rain the runoff was essentially all ground‐water (U.S. Geol, Surv. Water‐Supply Paper 597, pp. 107–116 and pi. 19, 1929). In the discussion of the methods and results of this investigation, the following statement was made (Water‐Supply Paper 597, pp. 145–146):</p><p>“In this investigation the estimates of ground‐water runoff were based on the discharge of the Pomperaug at Bennetts Bridge—that is, on the discharge during the periods between rains, when there was virtually no direct runoff left in the stream‐system. Much better results could be obtained by basing the estimates on periods beginning as soon after rains as all of the direct runoff has reached the streams. With this method the ground‐water runoff during any particular day would be the total runoff minus the decrease in stream‐storage. The decrease in stream‐storage could be estimated by maintaining gages at several points on the trunk‐stream and on selected tributaries and making surveys of the stream‐system showing the approximate water‐areas of different parts of the system at different gage‐heights.”</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR017i002p00415","usgsCitation":"Meinzer, O.E., Cady, R., Leggette, R., and Fishel, V., 1936, The channel‐storage method of determining effluent seepage: Eos, Transactions, American Geophysical Union, v. 17, no. 2, p. 415-418, https://doi.org/10.1029/TR017i002p00415.","productDescription":"4 p.","startPage":"415","endPage":"418","costCenters":[],"links":[{"id":378141,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Meinzer, Oscar E.","contributorId":83436,"corporation":false,"usgs":true,"family":"Meinzer","given":"Oscar","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":797950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cady, R.C.","contributorId":44905,"corporation":false,"usgs":true,"family":"Cady","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":797951,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Leggette, R.M.","contributorId":87525,"corporation":false,"usgs":true,"family":"Leggette","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":797952,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fishel, V.C.","contributorId":6126,"corporation":false,"usgs":true,"family":"Fishel","given":"V.C.","email":"","affiliations":[],"preferred":false,"id":797953,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70213000,"text":"70213000 - 1936 - Several methods of studying fluctuations of ground‐water levels","interactions":[],"lastModifiedDate":"2020-09-03T17:03:47.454516","indexId":"70213000","displayToPublicDate":"1936-09-03T11:58:47","publicationYear":"1936","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":"Several methods of studying fluctuations of ground‐water levels","docAbstract":"<p><span>As a result of increased interest in ground‐water conditions in recent years, records of water‐levels in wells are now being collected in many places in the United States for the primary purpose of determining the relation of precipitation and other natural factors to fluctuations in water‐level. In the past, records of ground‐water levels have been collected chiefly in connection with intensive investigations in areas where the water‐levels were affected by artificial withdrawals and it has not been generally possible to correlate water‐level fluctuations closely with natural factors. It now appears probable that certain methods of studying water‐level fluctuations may be utilized advantageously in areas unaffected by heavy artificial withdrawals, but these methods generally do not yield satisfactory results in areas where there is considerable pumping or artesian flow. Three such methods are presented in this paper. The methods have not been given intensive study and their practical use is therefore not yet fully known. It is hoped that their application will be further investigated. Illustrations of the methods have been taken from records of ground‐water levels in the Platte River Valley, Nebraska, collected by the United States Geological Survey in cooperation with the Conservation and Survey Division of the University of Nebraska.</span></p>","publisher":"American Geophysical Union","doi":"10.1029/TR017i002p00400","usgsCitation":"Wenzel, L., 1936, Several methods of studying fluctuations of ground‐water levels: Eos, Transactions, American Geophysical Union, v. 17, no. 2, p. 400-405, https://doi.org/10.1029/TR017i002p00400.","productDescription":"6 p.","startPage":"400","endPage":"405","costCenters":[],"links":[{"id":378140,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Wenzel, Leland K.","contributorId":46077,"corporation":false,"usgs":true,"family":"Wenzel","given":"Leland K.","affiliations":[],"preferred":false,"id":797949,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70212999,"text":"70212999 - 1936 - Introduction: Some problems relating to fluctuations of ground‐water level","interactions":[],"lastModifiedDate":"2020-09-03T16:51:13.584707","indexId":"70212999","displayToPublicDate":"1936-09-03T11:34:28","publicationYear":"1936","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":"Introduction: Some problems relating to fluctuations of ground‐water level","docAbstract":"<p><span>When the program for the meeting of the Section of Hydrology a year ago was in preparation, it was suggested that a symposium be presented on the subject of the effects of the recent drought on ground‐water levels. The proposal was not carried out largely because at that time not enough accurate information on the subject was yet available. It has, however, seemed that this year a worth‐while group of papers could be developed on the broader subject of fluctuations of ground‐water levels.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR017i002p00337","usgsCitation":"Thompson, D.G., 1936, Introduction: Some problems relating to fluctuations of ground‐water level: Eos, Transactions, American Geophysical Union, v. 17, no. 2, p. 337-341, https://doi.org/10.1029/TR017i002p00337.","productDescription":"5 p.","startPage":"337","endPage":"341","costCenters":[],"links":[{"id":378139,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Thompson, D. G.","contributorId":95050,"corporation":false,"usgs":true,"family":"Thompson","given":"D.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":797948,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70212979,"text":"70212979 - 1936 - Mode of intrusion of pre‐Cambrian granites in Central Boulder County, Colorado","interactions":[],"lastModifiedDate":"2020-09-03T16:23:49.60499","indexId":"70212979","displayToPublicDate":"1936-09-02T11:24:05","publicationYear":"1936","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":"Mode of intrusion of pre‐Cambrian granites in Central Boulder County, Colorado","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR017i001p00257-2","usgsCitation":"Goddard, E.N., 1936, Mode of intrusion of pre‐Cambrian granites in Central Boulder County, Colorado: Eos, Transactions, American Geophysical Union, v. 17, no. 2, p. 257-257, https://doi.org/10.1029/TR017i001p00257-2.","productDescription":"1 p.","startPage":"257","endPage":"257","costCenters":[],"links":[{"id":378138,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Goddard, Edwin N.","contributorId":103305,"corporation":false,"usgs":true,"family":"Goddard","given":"Edwin","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":797947,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70212977,"text":"70212977 - 1936 - Suspended matter in several small streams","interactions":[],"lastModifiedDate":"2020-09-02T16:22:43.22912","indexId":"70212977","displayToPublicDate":"1936-09-02T11:11:29","publicationYear":"1936","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":"Suspended matter in several small streams","docAbstract":"<p><span>The measurement of the loads of suspended matter carried past 34 gaging‐stations located on streams in eight regional projects of the Soil Conservation Service has required greater precision in the measurement of discharge and a more intensive program for the collection of samples of suspended matter than has been found necessary by the Geological Survey in making similar measurements on the larger streams on which measurements have been made in the past. It was found early in the work that much the greater part of the annual load of suspended matter was carried in a relatively few days of high water for almost all the streams on which measurements were made. In order that these loads might be determined with reasonable accuracy it was found necessary to collect samples every hour and occasionally every half‐hour on rising and rapidly changing stages during floods. Some floods occurring at night were missed in part or entirely because the resident observer did not realize that a flood was in progress. Twenty‐four‐hour sampling programs, together with the aid of electric‐alarm systems at some stations, have made possible the collection of an adequate number of samples during most floods.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR017i002p00447","usgsCitation":"Love, S.K., 1936, Suspended matter in several small streams: Eos, Transactions, American Geophysical Union, v. 17, no. 2, p. 447-452, https://doi.org/10.1029/TR017i002p00447.","productDescription":"6 p.","startPage":"447","endPage":"452","costCenters":[],"links":[{"id":378112,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Love, Samuel K.","contributorId":77845,"corporation":false,"usgs":true,"family":"Love","given":"Samuel","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":797879,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70212921,"text":"70212921 - 1936 - A source of heat‐energy in crystallization of granodiorite magma, and some related problems of volcanism","interactions":[],"lastModifiedDate":"2020-09-01T19:48:06.368551","indexId":"70212921","displayToPublicDate":"1936-09-01T14:40:35","publicationYear":"1936","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":"A source of heat‐energy in crystallization of granodiorite magma, and some related problems of volcanism","docAbstract":"<p><span>Evidence obtained from thin sections, polished sections, and chemical analyses of granodiorite porphyries from the Ouray District of Colorado show that during crystallization of the granodiorite magma a number of shifts occurred in the equilibrium between the oxides of iron. These changes are reflected in processes of mineralization associated with the magma. The geologic setting of the igneous bodies and episodes of fissuring connected with the mineralization indicate that relief of pressure was the primary cause of the shifts in equilibrium. The iron occurring in the crystallized products and in the residual magmatic liquids is changed from its low to its high state of oxidation and thus provides an internal and potential source of heat‐energy in crystallizing magmas. The transformation of the potential energy into neat is shown to occur both as an episodic process, interrupting the normal course of igneous metamorphism and mineralization near the magma bodies, and also as a more or less continuous process in the production of primary subalkaline magmas. The energy‐transformation is so controlled by crystal fractionation within the magma‐hood that it provides a mechanism by which magma bodies are enabled to rise in the Earth's crust by selective fusion of salic material.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR017i001p00236","usgsCitation":"Burbank, W.S., 1936, A source of heat‐energy in crystallization of granodiorite magma, and some related problems of volcanism: Eos, Transactions, American Geophysical Union, v. 17, no. 1, p. 236-255, https://doi.org/10.1029/TR017i001p00236.","productDescription":"20 p.","startPage":"236","endPage":"255","costCenters":[],"links":[{"id":378072,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Burbank, W. S.","contributorId":38197,"corporation":false,"usgs":true,"family":"Burbank","given":"W.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":797815,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
]}