The Dengate quadrangle is an area of approximately 51 square miles in western Morton County, southwestern North Dakota. The quadrangle is about 40 miles west of Bismarck, the State capitol (fig. 1) and about 3.5 miles east of Glen Ullin (population 1,087). Interstate Highway 94,U.S. Highway 10, and the Northern Pacific Railroad cross the northern part of the area in an east-west direction.
The Dengate quadrangle is one of a group of 14 adjoining 71/2-minute quadrangles (fig. 1) that are being mapped by the U.S. Geological Survey to furnish a basis for classification of lands withdrawn by the Federal Government pending classification for coal, and to contribute to the geologic map atlas of the United States. Most of the fieldwork for the Dengate quadrangle was done during the late summers and early autumns of 1965 and 1966.
During the summer of 1966, the U.S. Geological Survey conducted a drilling program in the Dengate and nearby quadrangles (Smith, 1970) to gather information on the existence, thickness, and depth of lignite beds in withdrawn Federal lands. Two of the holes drilled are in the Dengate quadrangle.
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S.","contributorId":34142,"corporation":false,"usgs":true,"family":"Barclay","given":"C. S.","affiliations":[],"preferred":false,"id":166296,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":63794,"text":"gp728 - 1971 - Aeromagnetic map of the Winchendon quadrangle, Worcester County, Massachusetts, and Cheshire County, New Hampshire","interactions":[],"lastModifiedDate":"2025-06-26T19:34:41.594915","indexId":"gp728","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1971","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":317,"text":"Geophysical Investigations Map","code":"GP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"728","title":"Aeromagnetic map of the Winchendon quadrangle, Worcester County, Massachusetts, and Cheshire County, New Hampshire","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/gp728","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1971, Aeromagnetic map of the Winchendon quadrangle, Worcester County, Massachusetts, and Cheshire County, New Hampshire: U.S. Geological Survey Geophysical Investigations Map 728, 1 Plate: 20.85 x 31.85 inches, https://doi.org/10.3133/gp728.","productDescription":"1 Plate: 20.85 x 31.85 inches","costCenters":[],"links":[{"id":253485,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gp/0728/report-thumb.jpg"},{"id":250005,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/gp/0728/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":250004,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gp/0728/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":491462,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_6083.htm","linkFileType":{"id":5,"text":"html"}}],"scale":"24000","country":"United States","state":"Massachusetts, New Hampshire","county":"Cheshire County, Worcester County","otherGeospatial":"Winchendon quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -72.125,\n 42.75\n ],\n [\n -72.125,\n 42.625\n ],\n [\n -72,\n 42.625\n ],\n [\n -72,\n 42.75\n ],\n [\n -72.125,\n 42.75\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae7e4b07f02db68bd31","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":533263,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":66697,"text":"i691 - 1971 - Geologic map of the Schiller quadrangle of the Moon","interactions":[{"subject":{"id":15241,"text":"ofr69186 - 1969 - Preliminary geologic map of the Schiller quadrangle of the Moon","indexId":"ofr69186","publicationYear":"1969","noYear":false,"title":"Preliminary geologic map of the Schiller quadrangle of the Moon"},"predicate":"SUPERSEDED_BY","object":{"id":66697,"text":"i691 - 1971 - Geologic map of the Schiller quadrangle of the Moon","indexId":"i691","publicationYear":"1971","noYear":false,"title":"Geologic map of the Schiller quadrangle of the Moon"},"id":1}],"lastModifiedDate":"2022-11-28T21:16:53.249991","indexId":"i691","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1971","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"691","subseriesTitle":"MOON","title":"Geologic map of the Schiller quadrangle of the Moon","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i691","usgsCitation":"Offield, T., 1971, Geologic map of the Schiller quadrangle of the Moon: U.S. Geological Survey IMAP 691, 1 Plate: 50.00 × 34.00 inches, https://doi.org/10.3133/i691.","productDescription":"1 Plate: 50.00 × 34.00 inches","costCenters":[],"links":[{"id":188746,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":101358,"rank":399,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/0691/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}}],"otherGeospatial":"Moon","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae7e4b07f02db68bd25","contributors":{"authors":[{"text":"Offield, Terry W.","contributorId":64217,"corporation":false,"usgs":true,"family":"Offield","given":"Terry W.","affiliations":[],"preferred":false,"id":274933,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":2641,"text":"wsp1869F - 1971 - Analysis of current-meter data at Columbia River gaging stations, Washington and Oregon","interactions":[],"lastModifiedDate":"2012-02-02T00:05:29","indexId":"wsp1869F","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1971","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1869","chapter":"F","title":"Analysis of current-meter data at Columbia River gaging stations, Washington and Oregon","docAbstract":"The U.S. Geological Survey developed equipment to measure stream velocity simultaneously with 10 current meters arranged in a vertical and to measure velocity closer to the streambed than attainable with conventional equipment. \r\n\r\nWith the 10 current meters, synchronous velocities were recorded for a period of 66 minutes at 10 different depths in one vertical of one gaging-station cross section. In addition, with a current meter installed on a special bracket to allow measurements to 0.5 foot above streambed, data were obtained at two to four verticals in four gaging-station cross sections. \r\n\r\nThe mean velocity determined for the 66-minute period of record was 3.30 fps (feet per second). The graphic record of velocity was analyzed on a minute-by-minute basis. It was noted that the shape of the vertical velocity curves (plot of horizontal flow velocities measured in a vertical) changed from one minute to the next, but the change seemed to be random. Velocities obtained at different depths in the, profile fluctuated significantly, with the 1-minute velocities obtained at 0.05 depth (5 percent of total depths measured from the surface at indicated vertical) showing the smallest range--0.66 fps--and those at 0.55 depth the largest range--l.22 fps. \r\n\r\nThe standard deviation, expressed in feet per second, of the velocity at each point in the vertical tended to increase with depth--from 0.16 fps at 0.05 depth to a maximum of 0.24 fps at 0.75 depth. The standard deviation, expressed as a percentage of the mean velocity, ranged from about 4 percent near the surface to 11 percent at 0.95 depth. In spite of the fluctuation in mean velocity that occurred during the 66 minutes and observation period of 4 minutes yields a mean velocity that differs from the 66-minute mean by less than one-half of a percent. \r\n\r\nDetermining the mean velocity by averaging the 10-point observations of the 66minute run proved to be as accurate as by plotting the vertical velocity curvy (from the averaged 10 points) and then integrating the depth-velocity profile. In comparing the velocity obtained by integrating the depth-velocity profile with the 10-point mean velocity for other field data, collected beyond that obtained during the 66-minute run, the difference ranged from -1.3 to +1.7 percent and averaged -0.2 percent. Extension of the curve below the 0.95 depth by use of a power function proved to be fairly accurate (when compared with actual measurements within this reach made with the special current-meter bracket). However, the extension did not improve significantly the accuracy of the integrated-curve mean velocity. \r\n\r\nBoth the one- and two-point methods were found to agree with the 10-point velocity. In computing mean river velocity, values determined by the two-point method ranged from -1.4 to +1.6 percent when compared with the base integrated-curve mean river velocity. The one-point method yielded results that ranged from -1.9 to +4.4 percent and averaged 40.1 percent. \r\n\r\nIn determining river flow by use of the midsection and mean-section methods, the mean-section method uniformly yields lower flows for the same dart.. The range in difference is from -0.2 percent to -1.6 percent, with an average difference of -0.6 percent.","language":"ENGLISH","publisher":"U.S. Govt. Print. Off.; [for sale by the Supt. of Docs.],","doi":"10.3133/wsp1869F","usgsCitation":"Savini, J., and Bodhaine, G., 1971, Analysis of current-meter data at Columbia River gaging stations, Washington and Oregon: U.S. Geological Survey Water Supply Paper 1869, iv, 59 p. :illus., map. ;24 cm., https://doi.org/10.3133/wsp1869F.","productDescription":"iv, 59 p. :illus., map. ;24 cm.","costCenters":[],"links":[{"id":138601,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wsp/1869f/report-thumb.jpg"},{"id":28960,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/1869f/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acfe4b07f02db6805cc","contributors":{"authors":[{"text":"Savini, John","contributorId":67491,"corporation":false,"usgs":true,"family":"Savini","given":"John","email":"","affiliations":[],"preferred":false,"id":145546,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bodhaine, G. L.","contributorId":26671,"corporation":false,"usgs":true,"family":"Bodhaine","given":"G. L.","affiliations":[],"preferred":false,"id":145545,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":3101,"text":"wsp1994 - 1971 - Quality of surface waters of the United States, 1966, Parts 7 and 8, lower Mississippi River basin and western Gulf of Mexico basins","interactions":[],"lastModifiedDate":"2012-02-02T00:05:39","indexId":"wsp1994","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1971","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1994","title":"Quality of surface waters of the United States, 1966, Parts 7 and 8, lower Mississippi River basin and western Gulf of Mexico basins","language":"ENGLISH","publisher":"U.S. Govt. Print. 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Series"},"seriesTitle":{"id":336,"text":"Techniques of Water-Resources Investigations","code":"TWRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"05-A2","title":"Determination of minor elements in water by emission spectroscopy","docAbstract":"With the emission spectrograph, the analyst is able to determine many minor elements simultaneously in water samples. Spectrographic methods differ chiefly in techniques of preconcentrating the elements. For waters with dissolved solids of less than 1,000 milligrams per liter, the method of evaporating to dryness and determining the elements in the dried residue is sensitive, precise, and reasonably accurate. The lower limits of detection vary with the quantity of dissolved solids. Twenty-four elements are determined by this method.\r\nFor waters with more than 1,000 milligrams per liter of dissolved solids, it is necessary to separate the minor elements from the major constituents before spectrographically determining the former, in order to achieve adequate lower limits of detection. Such procedures generally require more time than the residue method. In the first of two such procedures given, 21 of the metallic elements are precipitated with thioacetamide prior to spectrographic determination. In an alternate procedure, 18 elements are precipitated quantitatively with complexing reagents 8-hydroxyquinoline, tannic acid, and thioanlide. This method is faster than the thioacetamide method, but at the sacrifice of some elements. A Fortran IV computer program for processing densitometric data is given in the section 'Computer Program.'","language":"English","publisher":"U.S. Govt. Print. Off., For sale by the Superintendent of Documents,","doi":"10.3133/twri05A2","usgsCitation":"Barnett, P.R., and Mallory, E.C., 1971, Determination of minor elements in water by emission spectroscopy: U.S. Geological Survey Techniques of Water-Resources Investigations 05-A2, v, 31 p., https://doi.org/10.3133/twri05A2.","productDescription":"v, 31 p.","costCenters":[{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true}],"links":[{"id":139511,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":191,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/twri/twri5a2/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa8e4b07f02db6675a4","contributors":{"authors":[{"text":"Barnett, Paul R.","contributorId":29801,"corporation":false,"usgs":true,"family":"Barnett","given":"Paul","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":149587,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mallory, E. 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1971 - Geologic map of parts of the Cairo and Barlow quadrangles, Ballard County, Kentucky","interactions":[],"lastModifiedDate":"2012-02-10T00:10:46","indexId":"gq885","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1971","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":316,"text":"Geologic Quadrangle","code":"GQ","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"885","title":"Geologic map of parts of the Cairo and Barlow quadrangles, Ballard County, Kentucky","language":"ENGLISH","doi":"10.3133/gq885","usgsCitation":"Olive, W.W., 1971, Geologic map of parts of the Cairo and Barlow quadrangles, Ballard County, Kentucky: U.S. Geological Survey Geologic Quadrangle 885, 1 map., https://doi.org/10.3133/gq885.","productDescription":"1 map.","costCenters":[],"links":[{"id":103601,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_2187.htm","linkFileType":{"id":5,"text":"html"},"description":"2187"},{"id":248526,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/gq/0885/report.pdf","size":"38","linkFileType":{"id":1,"text":"pdf"}},{"id":253587,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/gq/0885/report-thumb.jpg"}],"scale":"24000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -89.11749999999999,37 ], [ -89.11749999999999,37.1175 ], [ -89,37.1175 ], [ -89,37 ], [ -89.11749999999999,37 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b12e4b07f02db6a2776","contributors":{"authors":[{"text":"Olive, Wilds W.","contributorId":51302,"corporation":false,"usgs":true,"family":"Olive","given":"Wilds","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":267263,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":4693,"text":"twri02E1 - 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The emphasis is on the application and interpretation of geophysical well logs, and not on the operation of a logger. It describes in detail those logging techniques that have been utilized within the Water Resources Division of the U.S. Geological Survey, and those used in petroleum investigations that have potential application to hydrologic problems. Most of the logs described can be made by commercial logging service companies, and many can be made with small water-well loggers. The general principles of each technique and the rules of log interpretation are the same, regardless of differences in instrumentation. Geophysical well logs can be interpreted to determine the lithology, geometry, resistivity, formation factor, bulk density, porosity, permeability, moisture content, and specific yield of water-bearing rocks, and to define the source, movement, and chemical and physical characteristics of ground water. Numerous examples of logs are used to illustrate applications and interpretation in various ground-water environments. The interrelations between various types of logs are emphasized, and the following aspects are described for each of the important logging techniques: Principles and applications, instrumentation, calibration and standardization, radius of investigation, and extraneous effects.","language":"ENGLISH","publisher":"U.S. G.P.O.,","doi":"10.3133/twri02E1","issn":"0565-596X","usgsCitation":"Keys, W., and MacCary, L., 1971, Application of borehole geophysics to water-resources investigations: U.S. Geological Survey Techniques of Water-Resources Investigations 02-E1, ix, 126 p. :ill. ;26 cm. Reprinted in 1973, 1981, 1983, 1986, 1990., https://doi.org/10.3133/twri02E1.","productDescription":"ix, 126 p. :ill. ;26 cm. 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