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,{"id":70210561,"text":"70210561 - 1934 - Geologic and structure contour map of the southern half of the Cedar Creek anticline, Fallon County, Montana and Bowman County, North Dakota","interactions":[],"lastModifiedDate":"2022-05-27T20:46:40.709939","indexId":"70210561","displayToPublicDate":"1934-12-31T13:04:53","publicationYear":"1934","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"Geologic and structure contour map of the southern half of the Cedar Creek anticline, Fallon County, Montana and Bowman County, North Dakota","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/70210561","usgsCitation":"Dobbin, C.E., and Larsen, R., 1934, Geologic and structure contour map of the southern half of the Cedar Creek anticline, Fallon County, Montana and Bowman County, North Dakota, 1 Plate: 30.81 x 52.75 inches, https://doi.org/10.3133/70210561.","productDescription":"1 Plate: 30.81 x 52.75 inches","costCenters":[],"links":[{"id":401335,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/unnumbered/70210561/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":396947,"rank":1,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_93439.htm"},{"id":396950,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/70210561/report-thumb.jpg"}],"country":"United States","state":"Montana, North Dakota","county":"Bowman County, Fallon County","otherGeospatial":"Cedar Creek anticline","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -104.9061,\n              45.8819\n            ],\n            [\n              -102.995,\n              45.8819\n            ],\n            [\n              -102.995,\n              46.685\n            ],\n            [\n              -104.9061,\n              46.685\n            ],\n            [\n              -104.9061,\n              45.8819\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Dobbin, C. E.","contributorId":115816,"corporation":false,"usgs":true,"family":"Dobbin","given":"C.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":837676,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Larsen, R. M.","contributorId":94394,"corporation":false,"usgs":true,"family":"Larsen","given":"R. M.","affiliations":[],"preferred":false,"id":837677,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
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,{"id":70206682,"text":"70206682 - 1934 - Field evidence about the viscosity of lavas","interactions":[],"lastModifiedDate":"2024-09-24T17:52:36.60478","indexId":"70206682","displayToPublicDate":"1934-06-30T17:42:20","publicationYear":"1934","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":"Field evidence about the viscosity of lavas","docAbstract":"<p><span>There appears to be surprisingly little definite information on the viscosity of lavas. With few exceptions writers content themselves with such general and indefinite terms as “mobile”, “viscous”, or “highly viscous”. Apparently the only attempts to actually calculate viscosity have been made on Hawaiian lavas.&nbsp;&nbsp;</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i001p00255","usgsCitation":"Ross, C., 1934, Field evidence about the viscosity of lavas: Eos, Transactions, American Geophysical Union, v. 15, no. 1, p. 255-257, https://doi.org/10.1029/TR015i001p00255.","productDescription":"3 p.","startPage":"255","endPage":"257","costCenters":[],"links":[{"id":369267,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"MultiPolygon\",\"coordinates\":[[[[-155.778234,20.245743],[-155.772734,20.245409],[-155.746893,20.232325],[-155.737004,20.222773],[-155.735822,20.212417],[-155.732704,20.205392],[-155.653966,20.16736],[-155.630382,20.146916],[-155.624565,20.145911],[-155.607797,20.137987],[-155.600909,20.126573],[-155.598033,20.124539],[-155.590923,20.122497],[-155.58168,20.123617],[-155.568368,20.130545],[-155.558933,20.13157],[-155.523661,20.120028],[-155.516795,20.11523],[-155.502561,20.114155],[-155.468211,20.104296],[-155.443957,20.095318],[-155.405459,20.078772],[-155.4024,20.075541],[-155.387578,20.067119],[-155.33021,20.038517],[-155.29548,20.024438],[-155.282629,20.021969],[-155.270316,20.014525],[-155.240933,19.990173],[-155.204486,19.969438],[-155.194593,19.958368],[-155.179939,19.949372],[-155.149215,19.922872],[-155.144394,19.920523],[-155.131235,19.906801],[-155.124618,19.897288],[-155.12175,19.886099],[-155.107541,19.872467],[-155.098716,19.867811],[-155.095032,19.867882],[-155.086341,19.855399],[-155.084357,19.849736],[-155.085674,19.838584],[-155.088979,19.826656],[-155.094414,19.81491],[-155.09207,19.799409],[-155.091216,19.776368],[-155.093517,19.771832],[-155.093387,19.737751],[-155.087118,19.728013],[-155.079426,19.726193],[-155.063972,19.728917],[-155.045382,19.739824],[-155.006423,19.739286],[-154.997278,19.72858],[-154.987168,19.708524],[-154.981102,19.690687],[-154.984718,19.672161],[-154.983778,19.641647],[-154.974342,19.633201],[-154.963933,19.627605],[-154.950359,19.626461],[-154.947874,19.62425],[-154.947718,19.621947],[-154.951014,19.613614],[-154.947106,19.604856],[-154.93394,19.597505],[-154.928205,19.592702],[-154.924422,19.586553],[-154.903542,19.570622],[-154.875,19.556797],[-154.852618,19.549172],[-154.837384,19.538354],[-154.826732,19.537626],[-154.814417,19.53009],[-154.809561,19.522377],[-154.809379,19.519086],[-154.822968,19.48129],[-154.838545,19.463642],[-154.86854,19.438126],[-154.887817,19.426425],[-154.928772,19.397646],[-154.944185,19.381852],[-154.964619,19.365646],[-154.980861,19.349291],[-155.020537,19.331317],[-155.061729,19.316636],[-155.113272,19.290613],[-155.1337,19.276099],[-155.159635,19.268375],[-155.172413,19.26906],[-155.187427,19.266156],[-155.19626,19.261295],[-155.205892,19.260907],[-155.243961,19.271313],[-155.264619,19.274213],[-155.296761,19.266289],[-155.303808,19.261835],[-155.31337,19.250698],[-155.341268,19.234039],[-155.349148,19.217756],[-155.360631,19.20893],[-155.378638,19.202435],[-155.390701,19.201171],[-155.417369,19.187858],[-155.427093,19.179546],[-155.432519,19.170623],[-155.453516,19.151952],[-155.465663,19.146964],[-155.505281,19.137908],[-155.51474,19.132501],[-155.51214,19.128174],[-155.512137,19.124296],[-155.519652,19.117025],[-155.526136,19.115889],[-155.528902,19.11371],[-155.544806,19.091059],[-155.551129,19.08878],[-155.557817,19.08213],[-155.555326,19.069377],[-155.555177,19.053932],[-155.557371,19.046565],[-155.566446,19.032531],[-155.576599,19.027412],[-155.581903,19.02224],[-155.596032,18.998833],[-155.596521,18.980654],[-155.601866,18.971572],[-155.613966,18.970399],[-155.625256,18.961951],[-155.625,18.959934],[-155.638054,18.941723],[-155.658486,18.924835],[-155.672005,18.917466],[-155.681825,18.918694],[-155.687716,18.923358],[-155.690171,18.932195],[-155.693117,18.940542],[-155.726043,18.969437],[-155.763598,18.981837],[-155.806109,19.013967],[-155.853943,19.023762],[-155.88155,19.036644],[-155.884077,19.039266],[-155.886278,19.05576],[-155.903693,19.080777],[-155.908355,19.081138],[-155.921389,19.121183],[-155.917292,19.155963],[-155.903339,19.217792],[-155.90491,19.230147],[-155.902565,19.258427],[-155.895435,19.274639],[-155.890842,19.298905],[-155.887356,19.337101],[-155.888701,19.348031],[-155.898792,19.377984],[-155.913849,19.401107],[-155.909087,19.415455],[-155.921707,19.43055],[-155.924269,19.438794],[-155.925166,19.468081],[-155.922609,19.478611],[-155.924124,19.481406],[-155.930523,19.484921],[-155.935641,19.485628],[-155.936403,19.481905],[-155.939145,19.481577],[-155.95149,19.486649],[-155.952897,19.488805],[-155.953663,19.510003],[-155.960457,19.546612],[-155.962264,19.551779],[-155.965211,19.554745],[-155.96935,19.555963],[-155.970969,19.586328],[-155.978206,19.608159],[-155.997728,19.642816],[-156.028982,19.650098],[-156.032928,19.653905],[-156.034994,19.65936],[-156.033326,19.66923],[-156.027427,19.672154],[-156.029281,19.678908],[-156.036079,19.690252],[-156.04796,19.698938],[-156.051652,19.703649],[-156.052485,19.718667],[-156.064364,19.730766],[-156.05722,19.742536],[-156.052315,19.756836],[-156.049651,19.780452],[-156.021732,19.8022],[-156.006267,19.81758],[-155.982821,19.845651],[-155.976651,19.85053],[-155.964817,19.855183],[-155.949251,19.857034],[-155.945297,19.853443],[-155.940311,19.852305],[-155.925843,19.858928],[-155.926938,19.870221],[-155.92549,19.875],[-155.91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 \"}}]}","volume":"15","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Ross, Clarence S.","contributorId":7251,"corporation":false,"usgs":true,"family":"Ross","given":"Clarence S.","affiliations":[],"preferred":false,"id":775358,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70206681,"text":"70206681 - 1934 - The Rôle of volatiles in the formation of Virginia titanium deposits","interactions":[],"lastModifiedDate":"2019-11-16T17:40:10","indexId":"70206681","displayToPublicDate":"1934-06-30T17:35:19","publicationYear":"1934","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 Rôle of volatiles in the formation of Virginia titanium deposits","docAbstract":"<p><span>The feldspathic rock with which the titanium deposits of Virginia are associated appears to be an anorthosite, although the plagioclase is somewhat more sodic than in normal anorthosites. That is, this rock shows evidence of having been introduced as a mush‐like mass of crystals and intersititial magma, and of undergoing very thorough crushing during introduction. This rook was later very thoroughly altered by hydrothermal solutions which migrated through the fractures in the feldspar rook and new minerals including the titanium minerals—rutile and ilmenite—were introduced. The elements introduced into the feldspathic rock ware TiO</span><sub>2</sub><span>&nbsp;FeO, MgO, P</span><sub>2</sub><span>O</span><sub>5</sub><span>, and F. The other elements that went into the formation of new minerals were derived from the feldspar originally present. There was a distinct order in the abstraction of the introduced elements from the carrying solutions, as shown by the zonal relatione of the secondary minerals. Ferrous iron was abstracted first in the formation of the ferromagnesian silicates and ilmenite. Magnesium and titanium, in the absence of iron, traveled farther from the source of the solutions and deposited rutile and magnesian silicates. At greater distances most of the introduced elements had been abstracted from the solutions but notwithstanding this the feldspar was extensively altered, but without any marked changes between the chemical composition of the original feldspar rook and the resulting altered rook. ©1934. American Geophysical Union. All Rights Reserved.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i001p00245","issn":"00028606","usgsCitation":"Ross, C.S., 1934, The Rôle of volatiles in the formation of Virginia titanium deposits: Eos, Transactions, American Geophysical Union, v. 15, no. 1, p. 245-245, https://doi.org/10.1029/TR015i001p00245.","productDescription":"1 p. ","startPage":"245","endPage":"245","costCenters":[],"links":[{"id":369266,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Virginia 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 \"}}]}","volume":"15","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Ross, C. S.","contributorId":18337,"corporation":false,"usgs":true,"family":"Ross","given":"C.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":775357,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221684,"text":"70221684 - 1934 - Relation of stream‐flow to ground‐water levels","interactions":[],"lastModifiedDate":"2021-06-28T17:37:08.351486","indexId":"70221684","displayToPublicDate":"1934-06-01T12:31:54","publicationYear":"1934","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":"Relation of stream‐flow to ground‐water levels","docAbstract":"<p><span>In recent years the&nbsp;</span>Water<span>&nbsp;Resources Branch of the United States Geological Surrey has given considerable attention to the&nbsp;</span>relation<span>&nbsp;of&nbsp;</span>ground<span>‐</span>water<span>&nbsp;to&nbsp;</span>stream<span>‐</span>flow<span>. One locality in which this&nbsp;</span>relation<span>&nbsp;is being studied is about 13 miles from Washington, near Colesvllle, Maryland, where a Kinnison float‐gage is being maintained in a well In connection with the operation of a gaging‐station on the Northwest Branch of the Anacostia River. The well is opposite the gaging‐station, on a gentle slope about one. fifth of a mile from the&nbsp;</span>stream<span>, where the land‐surface ia about 20 feet above the bed of the&nbsp;</span>stream<span>. The well is an abandoned dug well 20 feet deep and is lined with loose stone and presumably admits&nbsp;</span>water<span>&nbsp;freely. The fluctuations of the&nbsp;</span>water<span>‐</span>level<span>&nbsp;in the well are believed to afford a fairly close index of fluctuations in the&nbsp;</span>water<span>‐table at the well‐site and may be typical of the fluctuations that occur in a large part of the area drained by the Northwest Branch above the gaging‐station, consisting of about 21 square miles of gently rolling farm‐land. During the period of the observations herein considered the&nbsp;</span>water<span>‐</span>level<span>&nbsp;in the well ranged from 10 to 16 feet below the&nbsp;</span>ground<span>‐surface at the well and from 10 to 4 feet above the bed of the&nbsp;</span>stream<span>.&nbsp;</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00414","usgsCitation":"Harrold, L., 1934, Relation of stream‐flow to ground‐water levels: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 414-416, https://doi.org/10.1029/TR015i002p00414.","productDescription":"3 p.","startPage":"414","endPage":"416","costCenters":[],"links":[{"id":386811,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","state":"Maryland","city":"Colesville","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -77.02136993408203,\n              39.06264886527909\n            ],\n            [\n              -76.98051452636719,\n              39.06264886527909\n            ],\n            [\n              -76.98051452636719,\n              39.08397168286113\n            ],\n            [\n              -77.02136993408203,\n              39.08397168286113\n            ],\n            [\n              -77.02136993408203,\n              39.06264886527909\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Harrold, L.L.","contributorId":260661,"corporation":false,"usgs":false,"family":"Harrold","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":818424,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221683,"text":"70221683 - 1934 - A study of salt‐water encroachment in the Galveston Area, Texas","interactions":[],"lastModifiedDate":"2021-06-28T17:23:06.351397","indexId":"70221683","displayToPublicDate":"1934-06-01T12:18:04","publicationYear":"1934","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 study of salt‐water encroachment in the Galveston Area, Texas","docAbstract":"<p>A<span>&nbsp;survey of the ground‐</span>water<span>&nbsp;resources of the region&nbsp;</span>in<span>&nbsp;which Houston and&nbsp;</span>Galveston<span>&nbsp;are situated was started&nbsp;</span>in<span>&nbsp;December 1930 by the United States Geological Survey&nbsp;</span>in<span>&nbsp;cooperation with the&nbsp;</span>Texas<span>&nbsp;Board of&nbsp;</span>Water<span>&nbsp;Engineers.&nbsp;</span>In<span>&nbsp;connection with this survey&nbsp;</span>a<span>&nbsp;special&nbsp;</span>study<span>&nbsp;is being made of the geochemical relations of the ground‐waters of an&nbsp;</span>area<span>&nbsp;about 25 miles wide and 90 miles long, extending from&nbsp;</span>Galveston<span>&nbsp;northwestward through Houston. This&nbsp;</span>study<span>&nbsp;considers the influence on the ground‐waters of the age and degree of weathering of the outcrop formations, base‐exchange materials,&nbsp;</span>salt<span>‐domes, and&nbsp;</span>salt<span>‐</span>water<span>&nbsp;</span>encroachment<span>.&nbsp;</span>In<span>&nbsp;this paper, however, attention is confined to&nbsp;</span>salt<span>‐</span>water<span>&nbsp;</span>encroachment<span>&nbsp;along the line from&nbsp;</span>Galveston<span>&nbsp;to Houston (Fig. 1).</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00432","usgsCitation":"Turner, S., and Foster, M.D., 1934, A study of salt‐water encroachment in the Galveston Area, Texas: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 432-435, https://doi.org/10.1029/TR015i002p00432.","productDescription":"4 p.","startPage":"432","endPage":"435","costCenters":[],"links":[{"id":386810,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","state":"Texas","city":"Galveston","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -94.8175048828125,\n              29.439597566602902\n            ],\n            [\n              -95.0372314453125,\n              29.216904948184734\n            ],\n            [\n              -95.29541015625,\n              28.9913248161703\n            ],\n            [\n              -95.25146484374999,\n              28.926439238621036\n            ],\n            [\n              -94.69390869140625,\n              29.26962881522664\n            ],\n            [\n              -94.47143554687499,\n              29.470687864832556\n            ],\n            [\n              -94.50164794921875,\n              29.537619205973428\n            ],\n            [\n              -94.8175048828125,\n              29.439597566602902\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Turner, Samuel F.","contributorId":23982,"corporation":false,"usgs":true,"family":"Turner","given":"Samuel F.","affiliations":[],"preferred":false,"id":818422,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foster, Margaret D.","contributorId":21141,"corporation":false,"usgs":true,"family":"Foster","given":"Margaret","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":818423,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70221682,"text":"70221682 - 1934 - Rare chemical constituents of amelia (Virginia) pegmatite dikes, and their mineral sources","interactions":[],"lastModifiedDate":"2021-06-28T17:16:04.539947","indexId":"70221682","displayToPublicDate":"1934-06-01T12:10:12","publicationYear":"1934","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":"Rare chemical constituents of amelia (Virginia) pegmatite dikes, and their mineral sources","docAbstract":"<p>Students of Igneous phenomena have long since become familiar with the occurrence of rare minerals in pegmatitic bodies. The great local concentration of rare elements in pegmatite minerals provides a remarkably good opportunity for the Investigation of deep-seated rock constituents, for it is reasonable to suppose that these same elements are widely distributed in minute amounts through the parent rocks to which they are genetically related; but their concentration in pegmatite bodies affords a record of their presence that is lacking in other rocks.</p><p>The unusual number of rare minerals of the Amelia, Virginia, pegmatites has long attracted attention, and the rare elements of the more abundant minerals which have been investigated in the laboratories of the United States Geological Survey afford an unusual opportunity to study the rare constituents of a pegmatite. This famous locality for rare minerals is situated 38 miles southwest of Richmond, just south of Appomattox River, on the Piedmont plateau.</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i001p00234","usgsCitation":"Glass, J.J., 1934, Rare chemical constituents of amelia (Virginia) pegmatite dikes, and their mineral sources: Eos, Transactions, American Geophysical Union, v. 15, no. 1, p. 234-237, https://doi.org/10.1029/TR015i001p00234.","productDescription":"4 p.","startPage":"234","endPage":"237","costCenters":[],"links":[{"id":386809,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Glass, Jewell J.","contributorId":106948,"corporation":false,"usgs":true,"family":"Glass","given":"Jewell","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":818421,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221680,"text":"70221680 - 1934 - Report of the committee on underground‐water, 1933–34","interactions":[],"lastModifiedDate":"2021-06-28T16:41:37.218356","indexId":"70221680","displayToPublicDate":"1934-06-01T11:39:10","publicationYear":"1934","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Report of the committee on underground‐water, 1933–34","docAbstract":"<p><span>The by‐laws adopted at the meeting of the Section of Hydrology in&nbsp;</span>1933<span>&nbsp;provided that the membership of research committees should be reconstituted every three years. There have, accordingly, been some changes in the membership of the&nbsp;</span>Committee<span>&nbsp;on&nbsp;</span>Underground<span>‐</span>Water<span>. Certain members have retired because of pressure of other duties or because they are no longer actively engaged in ground‐</span>water<span>&nbsp;work. Dr. O. E. Meinzer, who retired as Chairman of the Section of Hydrology, has agreed to serve on the&nbsp;</span>Committee<span>, and probably two or three other men will be appointed to make contact with special phases of the field covered by the&nbsp;</span>Committee<span>. It is with regret that the Chairman reports the loss to the&nbsp;</span>Committee<span>&nbsp;by the death of A. F. Melcher, who had contributed much to the science of ground‐</span>water<span>&nbsp;hydrology by his studies on permeability and absorption of sedimentary formations for&nbsp;</span>water<span>, oil, and gas. ©19</span>34</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00312","usgsCitation":"Thompson, D.G., 1934, Report of the committee on underground‐water, 1933–34: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 312-316, https://doi.org/10.1029/TR015i002p00312.","productDescription":"5 p.","startPage":"312","endPage":"316","costCenters":[],"links":[{"id":386806,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","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":818418,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221679,"text":"70221679 - 1934 - The transmission of pressure in artesian aquifers","interactions":[],"lastModifiedDate":"2021-06-28T16:37:27.430459","indexId":"70221679","displayToPublicDate":"1934-06-01T11:34:13","publicationYear":"1934","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 transmission of pressure in artesian aquifers","docAbstract":"<p><span>The water&nbsp;</span>in<span>&nbsp;</span>artesian<span>&nbsp;</span>aquifers<span>&nbsp;is confined under&nbsp;</span>pressure<span>. Under ideal conditions&nbsp;</span>in<span>&nbsp;a perfectly rigid&nbsp;</span>artesian<span>&nbsp;reservoir a change of&nbsp;</span>pressure<span>&nbsp;</span>in<span>&nbsp;one part of the reservoir should produce a corresponding change of&nbsp;</span>pressure<span>&nbsp;</span>in<span>&nbsp;all other parts of the reservoir. Theoretically, the&nbsp;</span>transmission<span>&nbsp;of&nbsp;</span>pressure<span>&nbsp;should take place rapidly and without any movement of water other than the small amount resulting from the compressibility of water. However, observations under natural conditions show that the&nbsp;</span>transmission<span>&nbsp;of&nbsp;</span>pressure<span>&nbsp;is not always rapid and that the rate of&nbsp;</span>transmission<span>&nbsp;appears to be determined&nbsp;</span>in<span>&nbsp;great part by the distance traversed and the magnitude of the change of&nbsp;</span>pressure<span>. There are many reasons for believing that&nbsp;</span>artesian<span>&nbsp;</span>aquifers<span>&nbsp;and their confining beds are not perfectly rigid but that they are elastic and capable of compression and dilation (O. E. Meinzer, Compressibility and elasticity of&nbsp;</span>artesian<span>&nbsp;</span>aquifers<span>, Econ. Geol., v. 23, pp. 263–291, 1928). This appears to be the cause of the lack of rapidity of&nbsp;</span>transmission<span>&nbsp;of&nbsp;</span>pressure<span>&nbsp;</span>in<span>&nbsp;</span>artesian<span>&nbsp;</span>aquifers<span>.&nbsp;</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00409","usgsCitation":"Leggette, R., and Taylor, G., 1934, The transmission of pressure in artesian aquifers: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 409-413, https://doi.org/10.1029/TR015i002p00409.","productDescription":"5 p.","startPage":"409","endPage":"413","costCenters":[],"links":[{"id":386804,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Leggette, R.M.","contributorId":87525,"corporation":false,"usgs":true,"family":"Leggette","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":818416,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Taylor, G.H.","contributorId":85158,"corporation":false,"usgs":true,"family":"Taylor","given":"G.H.","email":"","affiliations":[],"preferred":false,"id":818417,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70221674,"text":"70221674 - 1934 - Ablation of snow‐fields at high altitudes by radiant solar heat","interactions":[],"lastModifiedDate":"2021-06-28T16:02:05.492364","indexId":"70221674","displayToPublicDate":"1934-06-01T10:59:44","publicationYear":"1934","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":"Ablation of snow‐fields at high altitudes by radiant solar heat","docAbstract":"<p>Snow<span>‐</span>fields<span>&nbsp;and the so‐called névés of glaciers on lofty mountains often present a peculiar, honeycombed appearance, the surface being pitted with deep cell‐like hollows a foot or two feet in diameter and from a few inches to several feet in depth. When typically developed these hollows are closely spaced, the divides between them consisting merely of attenuated blades and pinnacles of hard, granular&nbsp;</span>snow<span>&nbsp;(Fig. 1). The hollows are alined roughly in rows and sunk&nbsp;</span>at<span>&nbsp;a uniform,&nbsp;</span>high<span>&nbsp;angle, all in the same direction.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00380","usgsCitation":"Matthes, F.E., 1934, Ablation of snow‐fields at high altitudes by radiant solar heat: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 380-385, https://doi.org/10.1029/TR015i002p00380.","productDescription":"6 p.","startPage":"380","endPage":"385","costCenters":[],"links":[{"id":386800,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Matthes, F. E.","contributorId":9333,"corporation":false,"usgs":true,"family":"Matthes","given":"F.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":818404,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221673,"text":"70221673 - 1934 - Appendix A—permeability","interactions":[],"lastModifiedDate":"2021-06-28T15:56:06.937317","indexId":"70221673","displayToPublicDate":"1934-06-01T10:52:41","publicationYear":"1934","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":"Appendix A—permeability","docAbstract":"<p>In the paper entitled “The measurement of the permeability of porous media for homogeneous fluids” by R. D. Wyckoff and others [42] a unit of permeability is proposed which is based on centimeters, seconds, and atmospheres of pressure (76 centimeters of mercury).</p><p>In 1923, when the Hydrologic Laboratory of the United States Geological Survey was organized, much study was given to the question of a coefficient of permeability, and a coefficient was adopted which is based on feet and gallons a day (U.S. Geol. Survey Water-Supply Paper 596, p. 148). This coefficient has been extensively used and has proved very satisfactory in ground-water work. It has the merit of being readily applicable to field-conditions. It is, moreover, of convenient size, the coefficients of most water-bearing materials being integers of two or three figures, that is, between 10 and 1000. It was adopted in place of Slichter's “transmission-constant” (U.S. Geol. Survey Water-Supply Paper 67, p. 27, 1902), after much careful consideration, largely because the “transmission-constant” of most water-bearing materials is inconvenient in being only a small decimal.</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00316","usgsCitation":"Meinzer, O.E., 1934, Appendix A—permeability: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 316-317, https://doi.org/10.1029/TR015i002p00316.","productDescription":"2 p.","startPage":"316","endPage":"317","costCenters":[],"links":[{"id":386798,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Meinzer, O. E.","contributorId":10020,"corporation":false,"usgs":true,"family":"Meinzer","given":"O.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":818403,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221672,"text":"70221672 - 1934 - Report of the committee on chemistry of natural waters, 1933–34","interactions":[],"lastModifiedDate":"2021-06-28T15:51:28.732707","indexId":"70221672","displayToPublicDate":"1934-06-01T10:48:13","publicationYear":"1934","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Report of the committee on chemistry of natural waters, 1933–34","docAbstract":"<p><span>The personnel of this&nbsp;</span>Committee<span>&nbsp;during the past year, practically the same as during the previous year, has been as follows: C. S. Howard, Chairman—United States Geological Survey, Washington, D.C. L. C. Case—Gypsy Oil Company, Tulsa, Oklahoma. W. D. Collins—United States Geological Survey, Washington, D.C. H. F. Flynn—United States Engineer Office, 35 South Ninth Street, Philadelphia, Pennsylvania. W. P. Kelley—University of California, Riverside, California. Alfred C. Lane—Tufts College, Tufts College, Massachusetts. Augustus Locke—477 Mills Building, San Francisco, California. R. D. Leitch—United States Bureau of Mines, Pittsburgh, Pennsylvania. H. T. Logan—United States Bureau of Standards, Washington, D.C. Thomas S. Lovering—United States Geological Survey, Washington, D.C. Thomas E. Means—111 Sutter Street, San Francisco, California. F. B. Plummer—University of Texas, Austin, Texas. J. W. Sale—United States Food and Drug Administration, Washington, D.C. C S. Scofield—Bureau of Plant Industry, Department of Agriculture, Washington, D.C. Thomas G. Thompson—University of Washington, Seattle, Washington.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00322-2","usgsCitation":"Howard, C.S., 1934, Report of the committee on chemistry of natural waters, 1933–34: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 322-325, https://doi.org/10.1029/TR015i002p00322-2.","productDescription":"4 p.","startPage":"322","endPage":"325","costCenters":[],"links":[{"id":386797,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Howard, C. S.","contributorId":73180,"corporation":false,"usgs":true,"family":"Howard","given":"C.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":818402,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221668,"text":"70221668 - 1934 - Appendix C—A selected list of papers relating to ground‐water hydrology","interactions":[],"lastModifiedDate":"2021-06-29T14:00:10.563864","indexId":"70221668","displayToPublicDate":"1934-06-01T09:04:11","publicationYear":"1934","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":"Appendix C—A selected list of papers relating to ground‐water hydrology","docAbstract":"<p><span>In the following&nbsp;</span>list<span>&nbsp;brief statements have been added to certain references to call attention to special phases of&nbsp;</span>ground<span>‐</span>water<span>&nbsp;problems which are not apparent from the titles. Abstracts of most of these&nbsp;</span>papers<span>&nbsp;have been or will be published in the Annotated Bibliography of Economic Geology.&nbsp;</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00318","usgsCitation":"Sayre, A., 1934, Appendix C—A selected list of papers relating to ground‐water hydrology: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 318-320, https://doi.org/10.1029/TR015i002p00318.","productDescription":"3 p.","startPage":"318","endPage":"320","costCenters":[],"links":[{"id":386848,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Sayre, A.N.","contributorId":84339,"corporation":false,"usgs":true,"family":"Sayre","given":"A.N.","email":"","affiliations":[],"preferred":false,"id":818496,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221667,"text":"70221667 - 1934 - Appendix B—Lake and ground‐water levels","interactions":[],"lastModifiedDate":"2021-06-28T14:02:22.088463","indexId":"70221667","displayToPublicDate":"1934-06-01T08:58:02","publicationYear":"1934","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":"Appendix B—Lake and ground‐water levels","docAbstract":"<p>An outstanding achievement of the Section of Hydrology has been the work of the Committee on Glaciers in assembling the existing records of the advance and retreat of the glaciers in the Western States and in Alaska, encouraging various agencies in making periodic observations, systematizing and standardizing the work, and providing for the compilation and preservation of the data obtained from year to year.</p><p>The fluctuation of lake levels is a closely related subject that is equally fundamental in the study of hydrology. In 1922 I published a map giving the distribution of 68 Pleistocene lakes in the Basin and Range province and showed that the desiccation of these lakes could have been caused by change in temperature as well as change in precipitation (Geol. Soc. Amer. Bull., v. 33. pp. 541–552. 1922). Abundant and convincing evidences of changes in climate in the Pleistocene epoch or at its end are afforded both by the ancient drift-sheets and by the ancient lake features, but the question as to the relative importance of changes in temperature and changes in precipitation is still very obscure.</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00317","usgsCitation":"Meinzer, O.E., 1934, Appendix B—Lake and ground‐water levels: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 317-318, https://doi.org/10.1029/TR015i002p00317.","productDescription":"2 p.","startPage":"317","endPage":"318","costCenters":[],"links":[{"id":386792,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","otherGeospatial":"western United States and Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -166.46484375,\n              57.51582286553883\n            ],\n            [\n              -135.87890625,\n              57.51582286553883\n            ],\n            [\n              -135.87890625,\n              70.72897946208789\n            ],\n            [\n              -166.46484375,\n              70.72897946208789\n            ],\n            [\n              -166.46484375,\n              57.51582286553883\n            ]\n          ]\n        ]\n      }\n    },\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -125.5078125,\n              32.84267363195431\n            ],\n            [\n              -109.3359375,\n              32.84267363195431\n            ],\n            [\n              -109.3359375,\n              48.80686346108517\n            ],\n            [\n              -125.5078125,\n              48.80686346108517\n            ],\n            [\n              -125.5078125,\n              32.84267363195431\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Meinzer, O. E.","contributorId":10020,"corporation":false,"usgs":true,"family":"Meinzer","given":"O.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":818395,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221666,"text":"70221666 - 1934 - Status of study of the frequency and magnitude of floods by the Mississippi Valley Committee of the Public Works Administration in collaboration with the United States Geological Survey","interactions":[],"lastModifiedDate":"2021-06-28T13:56:42.315237","indexId":"70221666","displayToPublicDate":"1934-06-01T08:53:41","publicationYear":"1934","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":"Status of study of the frequency and magnitude of floods by the Mississippi Valley Committee of the Public Works Administration in collaboration with the United States Geological Survey","docAbstract":"<p>Active work under the recently authorized project relating to floods and their frequencies began in March, and such progress as may be reported at this time is largely that of organization and preliminary planning.</p><p>One of the outstanding and impressive features of the organization is the provision for cooperative effort, whereby the mature judgment and possibly diverse viewpoints of various committees and consultants may be utilized to the fullest advantage. This arrangement should provide the necessary safeguard against adoption of immature individual views or favorite methods of analysis, to the exclusion of others of equal or greater merit. On the other hand, it is conceivable that too much of the limited time might be consumed in preliminary discussions of basic principles, methods of analysis, and formulas dealing with either magnitude or frequency of floods, if unanimity of opinion among several professional groups must precede the main work under the project authorized. In effect, such a procedure would require a practical and workable solution before the basic data had become available. To avoid such delays, a definite line of procedure has beer, proposed for consideration.</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TR015i002p00420","usgsCitation":"Jarvis, C.S., 1934, Status of study of the frequency and magnitude of floods by the Mississippi Valley Committee of the Public Works Administration in collaboration with the United States Geological Survey: Eos, Transactions, American Geophysical Union, v. 15, no. 2, p. 420-421, https://doi.org/10.1029/TR015i002p00420.","productDescription":"2 p.","startPage":"420","endPage":"421","costCenters":[],"links":[{"id":386791,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-08-18","publicationStatus":"PW","contributors":{"authors":[{"text":"Jarvis, Clarence S.","contributorId":75509,"corporation":false,"usgs":true,"family":"Jarvis","given":"Clarence","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":818394,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221660,"text":"70221660 - 1934 - Zoning of ore deposits in and adjoining the Leadville District, Colorado","interactions":[],"lastModifiedDate":"2021-06-27T15:43:26.203","indexId":"70221660","displayToPublicDate":"1934-05-01T10:38:26","publicationYear":"1934","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":"Zoning of ore deposits in and adjoining the Leadville District, Colorado","docAbstract":"<p><span>The&nbsp;</span>ore<span>&nbsp;</span>deposits<span>&nbsp;</span>in<span>&nbsp;the heart of the&nbsp;</span>Leadville<span>&nbsp;</span>district<span>,&nbsp;</span>Colorado<span>, are divisible, as shown by Emmons, Irving, and Loughlin,2 into two main classes on the basis of mineral composition: \"contact-metamorphic\" silicates accompanied by iron oxides, which adjoin an obscure igneous stock, and mixed sulphides accompanied by manganosiderite and quartz gangue, which cut the \"contact-metamorphic\"&nbsp;</span>deposits<span>&nbsp;and form a broad zone extending for 2 1/2 miles to the west and for shorter distances&nbsp;</span>in<span>&nbsp;other directions. A detailed consideration of the mineralogy of the mixed sulphide&nbsp;</span>ore<span>&nbsp;</span>deposits<span>&nbsp;clearly shows that they&nbsp;</span>in<span>&nbsp;turn are divisible into groups, referred to as hotter and intermediate mesothermal&nbsp;</span>deposits<span>. These groups, however, because of complications&nbsp;</span>in<span>&nbsp;structural control, are not ideally arranged from the standpoint of&nbsp;</span>zoning<span>.Emmons, Irving, and Loughlin noted that barite was a conspicuous gangue mineral&nbsp;</span>in<span>&nbsp;certain outlying&nbsp;</span>deposits<span>&nbsp;on the west slope of the Mosquito Range. The junior author during 1928-1931 had an opportunity to study the outlying&nbsp;</span>deposits<span>&nbsp;over an area of twenty square miles, which includes mines near the heads of Iowa Gulch and Empire Gulch, and the Weston Pass&nbsp;</span>district<span>&nbsp;(Fig. 1), and found that these baritic&nbsp;</span>deposits<span>&nbsp;form a somewhat distinct outer zone&nbsp;</span>in<span>&nbsp;which the primary&nbsp;</span>ore<span>&nbsp;consists of galena and light-colored zinc blende, with small amounts of silver and practically no gold,&nbsp;</span>in<span>&nbsp;a gangue of barite, jasperoid, and crystalline quartz. There is also recognized a still more remote though poorly defined zone&nbsp;</span>in<span>&nbsp;which the same sulphides are present but jasperoid is less conspicuous and barite is practically absent, whereas dolomite is the characteristic gangue mineral. The&nbsp;</span>deposits<span>&nbsp;</span>in<span>&nbsp;these two outer zones are fissure-fillings and comparatively small replacement bodies. They contrast strongly with the sulphide&nbsp;</span>deposits<span>&nbsp;</span>in<span>&nbsp;the heart of the&nbsp;</span>Leadville<span>&nbsp;</span>district<span>&nbsp;and are assigned to the outer mesothermal and epithermal zones. As they have not been described before, general features of these&nbsp;</span>deposits<span>&nbsp;are given&nbsp;</span>in<span>&nbsp;some detail, followed by their relations to the&nbsp;</span>deposits<span>&nbsp;within the&nbsp;</span>Leadville<span>&nbsp;</span>district<span>. Analogies are also drawn with similar&nbsp;</span>deposits<span>&nbsp;</span>in<span>&nbsp;other districts.</span>In<span>&nbsp;the preparation of this paper the authors have been impressed with the confusion that may result from too simple a conception of&nbsp;</span>zoning<span>. For a proper conception of&nbsp;</span>Leadville<span>, the geologist must have sufficient regard for structural conditions, must make due allowance for successive stages of mineral deposition within a small block of ground or even within a single&nbsp;</span>ore<span>&nbsp;shoot, and must also allow for the reactions between minerals formed at an early stage and solutions introduced during a late stage. The effects of such complications&nbsp;</span>in<span>&nbsp;the&nbsp;</span>Leadville<span>&nbsp;</span>district<span>&nbsp;might give the impression that certain minerals found&nbsp;</span>in<span>&nbsp;one of the inner zones were formed at relatively high temperatures, but close study of paragenesis indicates late deposition at relatively low temperatures. Again, as already stated, there is sufficient inconsistency&nbsp;</span>in<span>&nbsp;the distribution of certain varieties of&nbsp;</span>deposits<span>&nbsp;to give a confused impression of zonal arrangement unless the influence of structure on the circulation of&nbsp;</span>ore<span>-forming solutions is appreciated. The field facts give a far more complex picture than might be anticipated from a simple statement of the theory of&nbsp;</span>zoning<span>.&nbsp;</span></p>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.29.3.215","usgsCitation":"Loughlin, G.F., and Behre, C.H., 1934, Zoning of ore deposits in and adjoining the Leadville District, Colorado: Economic Geology, v. 29, no. 3, p. 215-254, https://doi.org/10.2113/gsecongeo.29.3.215.","productDescription":"40 p.","startPage":"215","endPage":"254","costCenters":[],"links":[{"id":386782,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","state":"Colorado","city":"Leadville","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -106.3421630859375,\n              39.23331686919235\n            ],\n            [\n              -106.24191284179688,\n              39.23331686919235\n            ],\n            [\n              -106.24191284179688,\n              39.279041894366785\n            ],\n            [\n              -106.3421630859375,\n              39.279041894366785\n            ],\n            [\n              -106.3421630859375,\n              39.23331686919235\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"29","issue":"3","noUsgsAuthors":false,"publicationDate":"1934-05-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Loughlin, G. F.","contributorId":8428,"corporation":false,"usgs":true,"family":"Loughlin","given":"G.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":818362,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Behre, C. H. Jr.","contributorId":68366,"corporation":false,"usgs":true,"family":"Behre","given":"C.","suffix":"Jr.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":818363,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":35875,"text":"b857 - 1934 - Mineral resources of Alaska: report on progress of investigations in 1932","interactions":[{"subject":{"id":45131,"text":"b857B - 1933 - Mineral resources of Alaska, report on progress of investigations in 1932. Past placer-gold production from Alaska","indexId":"b857B","publicationYear":"1933","noYear":false,"chapter":"B","title":"Mineral resources of Alaska, report on progress of investigations in 1932. Past placer-gold production from Alaska"},"predicate":"IS_PART_OF","object":{"id":35875,"text":"b857 - 1934 - Mineral resources of Alaska: report on progress of investigations in 1932","indexId":"b857","publicationYear":"1934","noYear":false,"title":"Mineral resources of Alaska: report on progress of investigations in 1932"},"id":1},{"subject":{"id":45132,"text":"b857C - 1934 - The Curry district, Alaska","indexId":"b857C","publicationYear":"1934","noYear":false,"chapter":"C","title":"The Curry district, Alaska"},"predicate":"IS_PART_OF","object":{"id":35875,"text":"b857 - 1934 - Mineral resources of Alaska: report on progress of investigations in 1932","indexId":"b857","publicationYear":"1934","noYear":false,"title":"Mineral resources of Alaska: report on progress of investigations in 1932"},"id":2},{"subject":{"id":45333,"text":"b857A - 1934 - Mineral resources of Alaska, report on progress of investigations in 1932. Mineral industry of Alaska in 1932","indexId":"b857A","publicationYear":"1934","noYear":false,"chapter":"A","title":"Mineral resources of Alaska, report on progress of investigations in 1932. Mineral industry of Alaska in 1932"},"predicate":"IS_PART_OF","object":{"id":35875,"text":"b857 - 1934 - Mineral resources of Alaska: report on progress of investigations in 1932","indexId":"b857","publicationYear":"1934","noYear":false,"title":"Mineral resources of Alaska: report on progress of investigations in 1932"},"id":3},{"subject":{"id":45334,"text":"b857D - 1934 - Mineral resources of Alaska, report on progress of investigations in 1932. Notes on the geology of the Alaska Peninsula and Aleutian Islands","indexId":"b857D","publicationYear":"1934","noYear":false,"chapter":"D","title":"Mineral resources of Alaska, report on progress of investigations in 1932. Notes on the geology of the Alaska Peninsula and Aleutian Islands"},"predicate":"IS_PART_OF","object":{"id":35875,"text":"b857 - 1934 - Mineral resources of Alaska: report on progress of investigations in 1932","indexId":"b857","publicationYear":"1934","noYear":false,"title":"Mineral resources of Alaska: report on progress of investigations in 1932"},"id":4},{"subject":{"id":52851,"text":"b857E - 1934 - Core drilling for coal in the Moose Creek area, Alaska","indexId":"b857E","publicationYear":"1934","noYear":false,"chapter":"E","title":"Core drilling for coal in the Moose Creek area, Alaska"},"predicate":"IS_PART_OF","object":{"id":35875,"text":"b857 - 1934 - Mineral resources of Alaska: report on progress of investigations in 1932","indexId":"b857","publicationYear":"1934","noYear":false,"title":"Mineral resources of Alaska: report on progress of investigations in 1932"},"id":5}],"lastModifiedDate":"2017-07-26T15:52:47","indexId":"b857","displayToPublicDate":"1934-01-01T13:23:00","publicationYear":"1934","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":"857","title":"Mineral resources of Alaska: report on progress of investigations in 1932","docAbstract":"No abstract available.","language":"English","publisher":"U.S. Government Printing Office","doi":"10.3133/b857","usgsCitation":"Smith, P.S., 1934, Mineral resources of Alaska: report on progress of investigations in 1932: U.S. Geological Survey Bulletin 857, 173 p.; Maps, https://doi.org/10.3133/b857.","productDescription":"173 p.; Maps","temporalStart":"1932-01-01","temporalEnd":"1932-12-31","costCenters":[],"links":[{"id":344359,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/bul/857/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":289921,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/bul/857/report-thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 172.44,51.21 ], [ 172.44,71.39 ], [ -129.99,71.39 ], [ -129.99,51.21 ], [ 172.44,51.21 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53c4fc3ce4b0b58d96eeb5d1","contributors":{"authors":[{"text":"Smith, Philip S.","contributorId":22690,"corporation":false,"usgs":true,"family":"Smith","given":"Philip","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":215367,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221685,"text":"70221685 - 1934 - Structural history of the fracture systems at Grass Valley, California","interactions":[],"lastModifiedDate":"2021-06-28T17:51:15.226326","indexId":"70221685","displayToPublicDate":"1934-01-01T12:44:35","publicationYear":"1934","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":"Structural history of the fracture systems at Grass Valley, California","docAbstract":"<p><span>In the foregoing outline of the&nbsp;</span>structural<span>&nbsp;</span>history<span>&nbsp;of the&nbsp;</span>Grass<span>&nbsp;</span>Valley<span>&nbsp;intrusive the vein fractures are regarded as elements of the internal tectonics of the intrusive body itself. They originated in an early stage of the&nbsp;</span>structural<span>&nbsp;development of the region, and are equivalent to the marginal thrusts observed in the Yose-mite and along the Mother Lode&nbsp;</span>system<span>. As such, the vein fractures are of local origin, since they are entirely restricted to the neighborhood of intrusive contacts. As the area of consolidation within the Sierra Nevada batholith increased, larger units were affected by tectonic stresses, and joints were formed which belong to a&nbsp;</span>system<span>&nbsp;of regional extent. As this&nbsp;</span>system<span>&nbsp;has been observed over an area of at least 7500 square miles, its regional character seems proven. Basic dikes and aplites follow the crossing&nbsp;</span>system<span>, and thus indicate that the earliest crossings were formed when magma to fill them was still available. Both fissure&nbsp;</span>systems<span>&nbsp;repeatedly served for adjustment of later stresses, as can be proved by relative mutual displacements and by the repeated fracturing and renewed deposition of quartz within the vein fissures. It is probable that these later stresses were regional in character.</span></p>","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.29.1.39","usgsCitation":"Johnston, W.D., and Cloos, E., 1934, Structural history of the fracture systems at Grass Valley, California: Economic Geology, v. 29, no. 1, p. 39-54, https://doi.org/10.2113/gsecongeo.29.1.39.","productDescription":"16 p.","startPage":"39","endPage":"54","costCenters":[],"links":[{"id":386814,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United  States","state":"California","city":"Grass Valley","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -121.22039794921874,\n              39.155622393423215\n            ],\n            [\n              -120.89355468749999,\n              39.155622393423215\n            ],\n            [\n              -120.89355468749999,\n              39.2832938689385\n            ],\n            [\n              -121.22039794921874,\n              39.2832938689385\n            ],\n            [\n              -121.22039794921874,\n              39.155622393423215\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"29","issue":"1","noUsgsAuthors":false,"publicationDate":"1934-01-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Johnston, W. D. Jr.","contributorId":27193,"corporation":false,"usgs":true,"family":"Johnston","given":"W.","suffix":"Jr.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":818427,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cloos, E.","contributorId":260662,"corporation":false,"usgs":false,"family":"Cloos","given":"E.","email":"","affiliations":[],"preferred":false,"id":818428,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
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