{"pageNumber":"314","pageRowStart":"7825","pageSize":"25","recordCount":36989,"records":[{"id":32276,"text":"ofr99540 - 1999 - Digital mining claim density map for federal lands in Nevada: 1996","interactions":[],"lastModifiedDate":"2023-06-22T12:50:46.091466","indexId":"ofr99540","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-540","title":"Digital mining claim density map for federal lands in Nevada: 1996","docAbstract":"

This report describes a digital map generated by the U.S. Geological Survey (USGS) to provide digital spatial mining claim density information for federal lands in Nevada as of March 1997. Mining claim data is earth science information deemed to be relevant to the assessment of historic, current, and future ecological, economic, and social systems. There is no paper map included in this Open-File report.

\n
\n

In accordance with the Federal Land Policy and Management Act of 1976 (FLPMA), all unpatented mining claims, mill, and tunnel sites must be recorded at the appropriate Bureau of Land Management (BLM) State office. BLM maintains a cumulative computer listing of mining claims in the MCRS database with locations given by meridian, township, range, and section. A mining claim is considered closed when the claim is relinquished or a formal BLM decision declaring the mining claim null and void has been issued and the appeal period has expired. All other mining claims filed with BLM are considered to be open and actively held. The digital map (figure 1.) with the mining claim density database available in this report are suitable for geographic information system (GIS)-based regional assessments at a scale of 1:100,000 or smaller.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99540","usgsCitation":"Hyndman, P.C., and Campbell, H.W., 1999, Digital mining claim density map for federal lands in Nevada: 1996: U.S. Geological Survey Open-File Report 99-540, Report: 20 p., Readme, Metadata, Digital package, https://doi.org/10.3133/ofr99540.","productDescription":"Report: 20 p., Readme, Metadata, Digital package","numberOfPages":"20","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":163537,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr99540.jpg"},{"id":3256,"rank":6,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0540/","linkFileType":{"id":5,"text":"html"}},{"id":285030,"rank":5,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/1999/0540/00readme.txt"},{"id":285031,"rank":4,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/1999/0540/NV_CLMS2.MET"},{"id":285032,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0540/pdf/OF99-540.PDF"},{"id":285033,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/1999/0540/of99-540.tar.Z"}],"country":"United States","state":"Nevada","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -120.0,35.0 ], [ -120.0,42.0 ], [ -114.0,42.0 ], [ -114.0,35.0 ], [ -120.0,35.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a96e4b07f02db65ab52","contributors":{"authors":[{"text":"Hyndman, Paul C.","contributorId":88391,"corporation":false,"usgs":true,"family":"Hyndman","given":"Paul","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":208143,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Campbell, Harry W.","contributorId":67509,"corporation":false,"usgs":true,"family":"Campbell","given":"Harry","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":208142,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":32277,"text":"ofr99541 - 1999 - Digital mining claim density map for federal lands in Oregon: 1996","interactions":[],"lastModifiedDate":"2023-06-22T12:54:45.945833","indexId":"ofr99541","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-541","title":"Digital mining claim density map for federal lands in Oregon: 1996","docAbstract":"

This report describes a digital map generated by the U.S. Geological Survey (USGS) to provide digital spatial mining claim density information for federal lands in Oregon as of March 1997. Mining claim data is earth science information deemed to be relevant to the assessment of historic, current, and future ecological, economic, and social systems. There is no paper map included in this Open-File report.

\n
\n

In accordance with the Federal Land Policy and Management Act of 1976 (FLPMA), all unpatented mining claims, mill and tunnel sites must be recorded at the appropriate Bureau of Land Management (BLM) State office. BLM maintains a cumulative computer listing of mining claims in the Mining Claim Recordation System (MCRS) database with locations given by meridian, township, range, and section. A mining claim is considered closed when the claim is relinquished or a formal BLM decision declaring the mining claim null and void has been issued and the appeal period has expired. All other mining claims filed with BLM are considered to be open and actively held. The digital map (figure 1.) with the mining claim density database available in this report are suitable for geographic information system (GIS)-based regional assessments at a scale of 1:100,000 or smaller.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99541","usgsCitation":"Hyndman, P.C., and Campbell, H.W., 1999, Digital mining claim density map for federal lands in Oregon: 1996: U.S. Geological Survey Open-File Report 99-541, Report: 21 p., Readme, Metadata, Digital package, https://doi.org/10.3133/ofr99541.","productDescription":"Report: 21 p., Readme, Metadata, Digital package","numberOfPages":"21","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":163538,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr99541.jpg"},{"id":3257,"rank":6,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0541/","linkFileType":{"id":5,"text":"html"}},{"id":285034,"rank":5,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/1999/0541/00readme.txt"},{"id":285035,"rank":4,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/1999/0541/OR_CLMS.MET"},{"id":285036,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0541/pdf/OF99-541.PDF"},{"id":285037,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/1999/0541/of99-541.tar.Z"}],"country":"United States","state":"Oregon","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.5,42.0 ], [ -124.5,46.25 ], [ -116.5,46.25 ], [ -116.5,42.0 ], [ -124.5,42.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a96e4b07f02db65aafb","contributors":{"authors":[{"text":"Hyndman, Paul C.","contributorId":88391,"corporation":false,"usgs":true,"family":"Hyndman","given":"Paul","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":208145,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Campbell, Harry W.","contributorId":67509,"corporation":false,"usgs":true,"family":"Campbell","given":"Harry","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":208144,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":32283,"text":"ofr99562D - 1999 - Aerial gamma-ray surveys of the conterminous United States and Alaska","interactions":[],"lastModifiedDate":"2024-08-15T14:27:36.523709","indexId":"ofr99562D","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-562","chapter":"D","title":"Aerial gamma-ray surveys of the conterminous United States and Alaska","docAbstract":"

No abstract available.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99562D","collaboration":"The USGS does not provide technical support for the software associated with this publication.","usgsCitation":"Duval, J.S., 1999, Aerial gamma-ray surveys of the conterminous United States and Alaska: U.S. Geological Survey Open-File Report 99-562, 1 CD-ROM, https://doi.org/10.3133/ofr99562D.","productDescription":"1 CD-ROM","costCenters":[],"links":[{"id":432767,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0562-d/ofr99562D.zip","text":"CD-ROM","linkFileType":{"id":6,"text":"zip"}},{"id":163227,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -134.0971349143794,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 49.65348088081478\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -126.0351619781483,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 71.67981245952856\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b03e4b07f02db698e14","contributors":{"authors":[{"text":"Duval, Joseph S.","contributorId":22314,"corporation":false,"usgs":true,"family":"Duval","given":"Joseph","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":208153,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":32291,"text":"ofr99562L - 1999 - Aerial gamma-ray surveys of the conterminous United States and Alaska","interactions":[],"lastModifiedDate":"2024-08-15T16:25:22.614892","indexId":"ofr99562L","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-562","chapter":"L","title":"Aerial gamma-ray surveys of the conterminous United States and Alaska","docAbstract":"

No abstract available.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99562L","collaboration":"The USGS does not provide technical support for the software associated with this publication.","usgsCitation":"Duval, J.S., 1999, Aerial gamma-ray surveys of the conterminous United States and Alaska: U.S. Geological Survey Open-File Report 99-562, 1 CD-ROM, https://doi.org/10.3133/ofr99562L.","productDescription":"1 CD-ROM","costCenters":[],"links":[{"id":432783,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0562-l/ofr99562L.zip","text":"CD-ROM","linkFileType":{"id":6,"text":"zip"}},{"id":163679,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -134.0971349143794,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 49.65348088081478\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -126.0351619781483,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 71.67981245952856\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b03e4b07f02db698e0a","contributors":{"authors":[{"text":"Duval, Joseph S.","contributorId":22314,"corporation":false,"usgs":true,"family":"Duval","given":"Joseph","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":208161,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":32278,"text":"ofr99542 - 1999 - Digital mining claim density map for federal lands in Wyoming: 1996","interactions":[],"lastModifiedDate":"2023-06-22T12:53:51.434357","indexId":"ofr99542","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-542","title":"Digital mining claim density map for federal lands in Wyoming: 1996","docAbstract":"

This report describes a digital map generated by the U.S. Geological Survey (USGS) to provide digital spatial mining claim density information for federal lands in Wyoming as of March 1997. Mining claim data is earth science information deemed to be relevant to the assessment of historic, current, and future ecological, economic, and social systems. There is no paper map included in this Open-File report.

\n
\n

In accordance with the Federal Land Policy and Management Act of 1976 (FLPMA), all unpatented mining claims, mill, and tunnel sites must be recorded at the appropriate BLM State office. BLM maintains a cumulative computer listing of mining claims in the Mining Claim Recordation System (MCRS) database with locations given by meridian, township, range, and section. A mining claim is considered closed when the claim is relinquished or a formal BLM decision declaring the mining claim null and void has been issued and the appeal period has expired. All other mining claims filed with BLM are considered to be open and actively held. The digital map (figure 1.) with the mining claim density database available in this report are suitable for geographic information system (GIS)-based regional assessments at a scale of 1:100,000 or smaller.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99542","usgsCitation":"Hyndman, P.C., and Campbell, H.W., 1999, Digital mining claim density map for federal lands in Wyoming: 1996: U.S. Geological Survey Open-File Report 99-542, Report: 18 p., Readme, Metadata, Digital package, https://doi.org/10.3133/ofr99542.","productDescription":"Report: 18 p., Readme, Metadata, Digital package","numberOfPages":"18","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":163539,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr99542.jpg"},{"id":285040,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0542/pdf/OF99-542.PDF"},{"id":285041,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/1999/0542/of99-542.tar.Z"},{"id":3258,"rank":6,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0542/","linkFileType":{"id":5,"text":"html"}},{"id":285038,"rank":5,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/1999/0542/00readme.txt"},{"id":285039,"rank":4,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/1999/0542/WY_CLMS2.MET"}],"country":"United States","state":"Wyoming","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.0,41.0 ], [ -111.0,45.0 ], [ -104.0,45.0 ], [ -104.0,41.0 ], [ -111.0,41.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a96e4b07f02db65aa7a","contributors":{"authors":[{"text":"Hyndman, Paul C.","contributorId":88391,"corporation":false,"usgs":true,"family":"Hyndman","given":"Paul","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":208147,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Campbell, Harry W.","contributorId":67509,"corporation":false,"usgs":true,"family":"Campbell","given":"Harry","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":208146,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":23833,"text":"ofr99361 - 1999 - McVCO handbook 1999","interactions":[],"lastModifiedDate":"2014-06-02T09:49:24","indexId":"ofr99361","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-361","title":"McVCO handbook 1999","docAbstract":"McVCO is a microcontroller-based frequency generator that replaces the voltage controlled oscillator (VCO) used in the analog telemetry of seismic data. It accepts low-level signals from a seismometer and produces a frequency modulated subcarrier suitable for radio or telephone links to a data collection site.\n\nMcVCO was designed for the purpose of improving the analog telemetry of signals within the Pacific Northwest Seismograph Network (PNSN). Its development received support from the University of Washington Geophysics Program, and both the Volcano Hazards and Earthquake Hazards programs of the United States Geological Survey (USGS).\n\nThis handbook covers operation of McVCO, provides a technical reference for those who require a closer look at how McVCO works, and covers a collection of topics that need explicit treatment or that spring from deployment of the instrument.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr99361","issn":"0094-9140","collaboration":"This report is also available in Spanish at OFR 99-361-S.","usgsCitation":"McChesney, P., 1999, McVCO handbook 1999: U.S. Geological Survey Open-File Report 99-361, 51 p., https://doi.org/10.3133/ofr99361.","productDescription":"51 p.","numberOfPages":"51","onlineOnly":"Y","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":1572,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0361/","linkFileType":{"id":5,"text":"html"}},{"id":156548,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0361/report-thumb.jpg"},{"id":53044,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0361/pdf/of99-361.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a27e4b07f02db610348","contributors":{"authors":[{"text":"McChesney, P.J.","contributorId":29470,"corporation":false,"usgs":true,"family":"McChesney","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":190823,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":23671,"text":"ofr99587 - 1999 - Preliminary report on deposit models for sand and gravel in the Cache la Poudre River valley","interactions":[],"lastModifiedDate":"2017-03-09T16:02:22","indexId":"ofr99587","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-587","title":"Preliminary report on deposit models for sand and gravel in the Cache la Poudre River valley","docAbstract":"The stratigraphy, sedimentary features, and physical characteristics of gravel deposits in the Cache la Poudre River\r\nvalley were studied to establish geologic models for these deposits. Because most of the gravel mined in the valley is\r\nbeneath the low terraces and floodplain, the quality of these deposits for aggregate was studied in detail at eight sites in a\r\n25.5-mile reach between Fort Collins and Greeley, Colorado. Aggregate quality was determined by field and laboratory\r\nmeasurements on samples collected under a consistent sampling plan.\r\nThe Broadway terrace is underlain by Pleistocene alluvium and, at some places, by fine-grained wind-blown\r\ndeposits. The Piney Creek terrace, low terraces, and floodplain are primarily underlain by Holocene alluvium.\r\nPleistocene alluvium may underlie these terraces at isolated locations along the river. Gravels beneath the Piney Creek\r\nterrace, low terraces, and floodplain are divisible into two units that are poorly distinguishable at the upstream end of the\r\nstudy area, but are readily distinguishable about 7 miles downstream. Where distinguished, the two gravel units are\r\nseparated by a sharp, locally erosional, contact. The upper gravel is probably of Holocene age, but the lower gravel is\r\nconsidered to be Holocene and Pleistocene.\r\nThe primary variation in particle size of the gravels beneath the floodplain and low terraces of the Cache la Poudre\r\nRiver valley is the downstream decrease in the proportion of particles measuring 3/4 inch and larger. Above Fort Collins,\r\nabout 60 pct of the gravel collects on the 3/4 inch sieve, whereas about 50 pct of gravel collects on the same sieve size at\r\nGreeley. For 1.5-inch sieves, the corresponding values are about 50 pct for Fort Collins and only about 30 pct for\r\nGreeley. Local differences in particle size and sorting between the upper and lower gravel units were observed in the\r\nfield, but only the coarsest particle sizes appear to have been concentrated in the lower unit.\r\nField measurements of aggregate quality, pebble lithology, and shape show little significant downstream variation.\r\nPebble lithology is about 25 percent granite; 48 percent pegmatite; 5-7 percent each of gneiss, quartz, and quartzite; and\r\nminor amounts of diabase, schist, volcanic porphyry, and sandstone. Among the rock types, only the volcanic porphyries\r\nmight be reactive with Portland cement.\r\nPebble shape is dominantly equidimensional with a tendency to form thick, disc-shaped particles. Disc-shaped and\r\nspherical particles comprise about 39 percent and 31 percent of the pebble-size fraction, respectively. Rod and blade\r\nshapes comprise about 18 and 12 percent of the pebble-size fraction, respectively. The relatively large proportion of\r\nequidimensional particles in the Cache la Poudre may be due to the small proportion of layered gneiss in gravel. Pebbles\r\nhaving axial ratios less than 0.5, which might be structurally weak, are rare.\r\nThe two gravel units show subtle local differences and evidence for derivation of the younger gravel from the older\r\ngravel. At many sites, the upper gravel unit tends to contain more quartz plus quartzite, has poorer physical quality, and\r\ncontains more angular pebbles than the lower gravel. Weathering, followed by transport in the river, might be expected to\r\nconcentrate quartz and quartzite, degrade physical quality, and break pebbles into angular fragments. This conclusion is\r\nconsistent with local evidence of an erosional contact between the two gravel units.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Denver, CO","doi":"10.3133/ofr99587","issn":"0094-9140","usgsCitation":"Langer, W.H., and Lindsey, D.A., 1999, Preliminary report on deposit models for sand and gravel in the Cache la Poudre River valley: U.S. Geological Survey Open-File Report 99-587, 27 p., https://doi.org/10.3133/ofr99587.","productDescription":"27 p.","costCenters":[],"links":[{"id":52929,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0587/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":1701,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0587/","linkFileType":{"id":5,"text":"html"}},{"id":157456,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0587/report-thumb.jpg"}],"country":"United States","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afbe4b07f02db696352","contributors":{"authors":[{"text":"Langer, W. H.","contributorId":44932,"corporation":false,"usgs":true,"family":"Langer","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":190518,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lindsey, D. A.","contributorId":49814,"corporation":false,"usgs":true,"family":"Lindsey","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":190519,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":23684,"text":"ofr99238 - 1999 - Procedures and computer programs for telescopic mesh refinement using MODFLOW","interactions":[],"lastModifiedDate":"2012-02-02T00:08:15","indexId":"ofr99238","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-238","title":"Procedures and computer programs for telescopic mesh refinement using MODFLOW","docAbstract":"Ground-water models are commonly used to evaluate flow systems in areas that are small\r\nrelative to entire aquifer systems. In many of these analyses, simulation of the entire flow system\r\nis not desirable or will not allow sufficient detail in the area of interest. The procedure of telescopic\r\nmesh refinement allows use of a small, detailed model in the area of interest by taking boundary\r\nconditions from a larger model that encompasses the model in the area of interest. Some previous\r\nstudies have used telescopic mesh refinement; however, better procedures are needed in carrying\r\nout telescopic mesh refinement using the U.S. Geological Survey ground-water flow model,\r\nreferred to as MODFLOW. This report presents general procedures and three computer programs\r\nfor use in telescopic mesh refinement with MODFLOW. The first computer program, MODTMR,\r\nconstructs MODFLOW data sets for a local or embedded model using MODFLOW data sets and\r\nsimulation results from a regional or encompassing model. The second computer program,\r\nTMRDIFF, provides a means of comparing head or drawdown in the local model with head or\r\ndrawdown in the corresponding area of the regional model. The third program, RIVGRID,\r\nprovides a means of constructing data sets for the River Package, Drain Package, General-Head\r\nBoundary Package, and Stream Package for regional and local models using grid-independent data\r\nspecifying locations of these features. RIVGRID may be needed in some applications of telescopic\r\nmesh refinement because regional-model data sets do not contain enough information on locations\r\nof head-dependent flow features to properly locate the features in local models. The program is a\r\ngeneral utility program that can be used in constructing data sets for head-dependent flow packages\r\nfor any MODFLOW model under construction.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/ofr99238","issn":"0094-9140","usgsCitation":"Leake, S.A., and Claar, D.V., 1999, Procedures and computer programs for telescopic mesh refinement using MODFLOW: U.S. Geological Survey Open-File Report 99-238, vii, 53 p., https://doi.org/10.3133/ofr99238.","productDescription":"vii, 53 p.","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":156700,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0238/report-thumb.jpg"},{"id":11530,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://az.water.usgs.gov/MODTMR/tmr.html","linkFileType":{"id":5,"text":"html"}},{"id":52938,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0238/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f6e4b07f02db5f1306","contributors":{"authors":[{"text":"Leake, Stanley A. 0000-0003-3568-2542 saleake@usgs.gov","orcid":"https://orcid.org/0000-0003-3568-2542","contributorId":1846,"corporation":false,"usgs":true,"family":"Leake","given":"Stanley","email":"saleake@usgs.gov","middleInitial":"A.","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"preferred":true,"id":190543,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Claar, David V.","contributorId":10068,"corporation":false,"usgs":true,"family":"Claar","given":"David","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":190544,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":23988,"text":"ofr99109 - 1999 - Description of the pelagic zooplankton and fish communities of Lakes Powell and Mead","interactions":[],"lastModifiedDate":"2012-02-02T00:08:10","indexId":"ofr99109","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-109","title":"Description of the pelagic zooplankton and fish communities of Lakes Powell and Mead","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr99109","issn":"0094-9140","usgsCitation":"Mueller, G., and Horn, M., 1999, Description of the pelagic zooplankton and fish communities of Lakes Powell and Mead: U.S. Geological Survey Open-File Report 99-109, ix, 449 p. :ill. (some col.), maps ;28 cm., https://doi.org/10.3133/ofr99109.","productDescription":"ix, 449 p. :ill. (some col.), maps ;28 cm.","costCenters":[],"links":[{"id":156267,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0109/report-thumb.jpg"},{"id":53175,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0109/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aabe4b07f02db669997","contributors":{"authors":[{"text":"Mueller, Gordon","contributorId":7729,"corporation":false,"usgs":true,"family":"Mueller","given":"Gordon","affiliations":[],"preferred":false,"id":191101,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Horn, M.J.","contributorId":56607,"corporation":false,"usgs":true,"family":"Horn","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":191102,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":32282,"text":"ofr99562C - 1999 - Aerial gamma-ray surveys of the conterminous United States and Alaska","interactions":[],"lastModifiedDate":"2024-08-15T14:15:45.532622","indexId":"ofr99562C","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-562","chapter":"C","title":"Aerial gamma-ray surveys of the conterminous United States and Alaska","docAbstract":"

No abstract available.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99562C","collaboration":"The USGS does not provide technical support for the software associated with this publication.","usgsCitation":"Duval, J.S., 1999, Aerial gamma-ray surveys of the conterminous United States and Alaska: U.S. Geological Survey Open-File Report 99-562, 1 CD-ROM, https://doi.org/10.3133/ofr99562C.","productDescription":"1 CD-ROM","costCenters":[],"links":[{"id":432762,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0562-c/ofr99562C.zip","text":"CD-ROM","linkFileType":{"id":6,"text":"zip"}},{"id":163226,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -134.0971349143794,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 49.65348088081478\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -126.0351619781483,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 71.67981245952856\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b03e4b07f02db698e0c","contributors":{"authors":[{"text":"Duval, Joseph S.","contributorId":22314,"corporation":false,"usgs":true,"family":"Duval","given":"Joseph","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":208152,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":32281,"text":"ofr99562B - 1999 - Aerial gamma-ray surveys of the conterminous United States and Alaska","interactions":[],"lastModifiedDate":"2024-08-15T14:21:09.478618","indexId":"ofr99562B","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-562","chapter":"B","title":"Aerial gamma-ray surveys of the conterminous United States and Alaska","docAbstract":"

No abstract available.

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No abstract available.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99562M","collaboration":"The USGS does not provide technical support for the software associated with this publication.","usgsCitation":"Duval, J.S., 1999, Aerial gamma-ray surveys of the conterminous United States and Alaska: U.S. Geological Survey Open-File Report 99-562, 1 CD-ROM, https://doi.org/10.3133/ofr99562M.","productDescription":"1 CD-ROM","costCenters":[],"links":[{"id":432786,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0562-m/ofr99562M.zip","text":"CD-ROM","linkFileType":{"id":6,"text":"zip"}},{"id":163680,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -134.0971349143794,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 24.693268745577015\n ],\n [\n -60.97767410564707,\n 49.65348088081478\n ],\n [\n -134.0971349143794,\n 49.65348088081478\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -126.0351619781483,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 71.67981245952856\n ],\n [\n -178.48062208832508,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 54.601301867840704\n ],\n [\n -126.0351619781483,\n 71.67981245952856\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b02e4b07f02db698d7f","contributors":{"authors":[{"text":"Duval, Joseph S.","contributorId":22314,"corporation":false,"usgs":true,"family":"Duval","given":"Joseph","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":208162,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":23119,"text":"ofr99557 - 1999 - Digitized aeromagnetic datasets for the conterminous United States, Hawaii, and Puerto Rico","interactions":[],"lastModifiedDate":"2024-03-01T12:15:30.071991","indexId":"ofr99557","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-557","title":"Digitized aeromagnetic datasets for the conterminous United States, Hawaii, and Puerto Rico","docAbstract":"

No abstract available.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99557","issn":"0094-9140","isbn":"0607909293","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1999, Digitized aeromagnetic datasets for the conterminous United States, Hawaii, and Puerto Rico: U.S. Geological Survey Open-File Report 99-557, 1 CD; Maps, https://doi.org/10.3133/ofr99557.","productDescription":"1 CD; Maps","costCenters":[],"links":[{"id":426140,"rank":3,"type":{"id":12,"text":"Errata"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0557/ofr-99-0557_errata.txt","text":"Errata","size":"4.00 KB","linkFileType":{"id":2,"text":"txt"},"description":"OFR 99-0557 errata"},{"id":156675,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr99557.JPG"},{"id":1529,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0557/html/mag_home.htm","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a82e4b07f02db64acdc","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":529105,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":32275,"text":"ofr99536 - 1999 - Geologic maps of the Mount Guyot, Luftee Knob, and Cove Creek Gap 7.5-minute quadrangles, Great Smoky Mountains National Park, Tennessee and North Carolina","interactions":[],"lastModifiedDate":"2012-02-02T00:09:15","indexId":"ofr99536","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-536","title":"Geologic maps of the Mount Guyot, Luftee Knob, and Cove Creek Gap 7.5-minute quadrangles, Great Smoky Mountains National Park, Tennessee and North Carolina","language":"ENGLISH","doi":"10.3133/ofr99536","usgsCitation":"Schultz, A., 1999, Geologic maps of the Mount Guyot, Luftee Knob, and Cove Creek Gap 7.5-minute quadrangles, Great Smoky Mountains National Park, Tennessee and North Carolina: U.S. Geological Survey Open-File Report 99-536, 9 p., 3 over-size sheets, scale 1:24,000 (1 inch = 2,000 feet). , https://doi.org/10.3133/ofr99536.","productDescription":"9 p., 3 over-size sheets, scale 1:24,000 (1 inch = 2,000 feet). ","costCenters":[],"links":[{"id":163536,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0536/report-thumb.jpg"},{"id":60328,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0536/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":60329,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0536/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":60330,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0536/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":60331,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0536/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"24000","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae0e4b07f02db688578","contributors":{"authors":[{"text":"Schultz, A. P.","contributorId":106139,"corporation":false,"usgs":true,"family":"Schultz","given":"A. P.","affiliations":[],"preferred":false,"id":208141,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":22646,"text":"ofr99547 - 1999 - Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin","interactions":[],"lastModifiedDate":"2012-02-02T00:07:57","indexId":"ofr99547","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-547","title":"Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin","docAbstract":"The data on this CD consist of geographic information system (GIS) coverages and tabular data on the geology of Early Proterozoic and Archean rocks in part of the Early Proterozoic Penokean orogeny. The map emphasizes metasedimentary and metavolcanic rocks that were deposited along the southern margin of the Superior craton and were later deformed during continental collision at about 1850 Ma. The area includes the famous iron ranges of the south shore region of the Lake Superior district. Base maps, both as digital raster graphics (DRG) and digital line graphs (DLG) are also provided for the convenience of users. The map has been compiled from many individual studies, mostly by USGS researchers, completed during the past 50 years, including many detailed (1:24,000 scale) geologic maps. Data was compiled at 1:100,000 scale and preserves most of the details of source materials. This product is a preliminary release of the geologic map data bases during ongoing studies of the geology and metallogeny of the Penokean continental margin. Files are provided in three formats: Federal Spatial Data Transfer format (SDTS), Arc export format (.e00) files, and Arc coverages. All files can be accessed directly from the CD-ROM using either ARC/INFO 7.1.2 or later or Arc View 3.0 or later software. ESRI's Arc Explorer, a free GIS data viewer available at the web site: http://www.esri.com/software/arcexplorer/index.html also provides display and querying capability for these files.","language":"ENGLISH","publisher":"The Survey,","doi":"10.3133/ofr99547","issn":"0094-9140","isbn":"0607936924","usgsCitation":"Cannon, W., and Ottke, D., 1999, Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin: U.S. Geological Survey Open-File Report 99-547, 1 computer optical disk :4 3/4 in., https://doi.org/10.3133/ofr99547.","productDescription":"1 computer optical disk :4 3/4 in.","costCenters":[],"links":[{"id":109895,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_23044.htm","linkFileType":{"id":5,"text":"html"},"description":"23044"},{"id":155223,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1408,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/openfile/of99-547/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c4bb","contributors":{"authors":[{"text":"Cannon, W.F. 0000-0002-2699-8118","orcid":"https://orcid.org/0000-0002-2699-8118","contributorId":70382,"corporation":false,"usgs":true,"family":"Cannon","given":"W.F.","affiliations":[],"preferred":false,"id":188630,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ottke, Doug","contributorId":80311,"corporation":false,"usgs":true,"family":"Ottke","given":"Doug","email":"","affiliations":[],"preferred":false,"id":188631,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":23629,"text":"ofr99552 - 1999 - 40Ar/39Ar age-spectrum data for amphibole, muscovite, biotite, and K-feldspar samples from metamorphic rocks in the Blue Ridge anticlinorium, northern Virginia","interactions":[],"lastModifiedDate":"2018-01-31T10:37:39","indexId":"ofr99552","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-552","title":"40Ar/39Ar age-spectrum data for amphibole, muscovite, biotite, and K-feldspar samples from metamorphic rocks in the Blue Ridge anticlinorium, northern Virginia","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr99552","issn":"0094-9140","usgsCitation":"Kunk, M.J., and Burton, W., 1999, 40Ar/39Ar age-spectrum data for amphibole, muscovite, biotite, and K-feldspar samples from metamorphic rocks in the Blue Ridge anticlinorium, northern Virginia: U.S. Geological Survey Open-File Report 99-552, 110 p. :ill. ;28 cm., https://doi.org/10.3133/ofr99552.","productDescription":"110 p. :ill. ;28 cm.","costCenters":[],"links":[{"id":154932,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0552/report-thumb.jpg"},{"id":52906,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0552/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd492fe4b0b290850eef50","contributors":{"authors":[{"text":"Kunk, Michael J. 0000-0003-4424-7825 mkunk@usgs.gov","orcid":"https://orcid.org/0000-0003-4424-7825","contributorId":200968,"corporation":false,"usgs":true,"family":"Kunk","given":"Michael","email":"mkunk@usgs.gov","middleInitial":"J.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":190448,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burton, W.C.","contributorId":41439,"corporation":false,"usgs":true,"family":"Burton","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":190447,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":22760,"text":"ofr99271A - 1999 - Analysis of geophysical logs, at North Penn Area 6 Superfund Site, Lansdale, Montgomery County, Pennsylvania","interactions":[],"lastModifiedDate":"2017-07-07T10:56:21","indexId":"ofr99271A","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-271","chapter":"A","title":"Analysis of geophysical logs, at North Penn Area 6 Superfund Site, Lansdale, Montgomery County, Pennsylvania","docAbstract":"The U.S. Geological Survey (USGS), as part of technical assistance to the U.S. Environmental Protection Agency (USEPA), collected borehole geophysical log data in 34 industrial, commercial, and public supply wells and 28 monitor wells at the North Penn Area 6 Superfund Site, in Lansdale, Pa., from August 22, 1995, through August 29, 1997. The wells range in depth from 50 to 1,027 feet below land surface and are drilled in Triassic-age shales and siltstones of the Brunswick Group and Lockatong Formation. The geophysical log data were collected to help describe the hydrogeologic framework in the area and to provide guidance in the reconstruction of the 28 monitor wells drilled during summer 1997. At the time of logging, all wells had open-hole construction.\r\n\r\n The geophysical logs, caliper, fluid-resistivity, and fluid-temperature, and borehole video logs were used to determine the vertical distribution of water-bearing fractures. Heatpulse-flowmeter measurements were used to determine vertical borehole flow under pumping and nonpumping conditions. The most productive fractures generally could be determined from heatpulse-flowmeter measurements under pumping conditions. Vertical borehole flow was measured under nonpumping conditions in most wells that had more than one water-bearing fracture. Upward flow was measured in 35 wells and probably is a result of natural head differences between fractures in the local ground-water-flow system. Downward flow was measured in 11 wells and commonly indicated differences in hydraulic heads of the fractures caused by nearby pumping. Both upward and downward flow was measured in three wells. No flow was detected in eight wells.\r\n\r\n Natural-gamma-ray logs were used to estimate the attitude of bedding. Thin shale marker beds, shown as spikes of elevated radioactivity in the natural-gamma logs of some wells throughout the area, enable the determination of bedding-plane orientation from three-point correlations. Generally, the marker beds in and near Lansdale strike about N. 48°-60° E. and dip about 11° NW. Acoustic televiewer logs run in selected boreholes indicate that the attitude of many water-bearing fractures commonly is similar to that of bedding.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr99271A","issn":"0094-9140","usgsCitation":"Conger, R.W., 1999, Analysis of geophysical logs, at North Penn Area 6 Superfund Site, Lansdale, Montgomery County, Pennsylvania: U.S. Geological Survey Open-File Report 99-271, xi, 149 p. :ill., col. map ;28 cm., https://doi.org/10.3133/ofr99271A.","productDescription":"xi, 149 p. :ill., col. map ;28 cm.","temporalStart":"1995-08-22","temporalEnd":"1997-08-29","costCenters":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"links":[{"id":24583,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0271a/","linkFileType":{"id":5,"text":"html"}},{"id":116084,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0271a/report-thumb.jpg"},{"id":52196,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0271a/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"24000","country":"United States","state":"Pennsylvania","county":"Montgomery","city":"Lansdale","otherGeospatial":"North Penn Area 6 Superfund Site","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -75.31666666666666,40.2175 ], [ -75.31666666666666,40.26777777777777 ], [ -75.23444444444445,40.26777777777777 ], [ -75.23444444444445,40.2175 ], [ -75.31666666666666,40.2175 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acfe4b07f02db6805d6","contributors":{"authors":[{"text":"Conger, Randall W. rwconger@usgs.gov","contributorId":2086,"corporation":false,"usgs":true,"family":"Conger","given":"Randall","email":"rwconger@usgs.gov","middleInitial":"W.","affiliations":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"preferred":true,"id":188826,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":23987,"text":"ofr99110 - 1999 - A case for site acclimation in the reintroduction of the endangered razorback sucker (Xyrauchen texanus)","interactions":[],"lastModifiedDate":"2012-02-02T00:08:10","indexId":"ofr99110","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-110","title":"A case for site acclimation in the reintroduction of the endangered razorback sucker (Xyrauchen texanus)","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr99110","issn":"0094-9140","usgsCitation":"Mueller, G., and Foster, D., 1999, A case for site acclimation in the reintroduction of the endangered razorback sucker (Xyrauchen texanus): U.S. Geological Survey Open-File Report 99-110, iii, 20 p. :ill., map ;28 cm., https://doi.org/10.3133/ofr99110.","productDescription":"iii, 20 p. :ill., map ;28 cm.","costCenters":[],"links":[{"id":156266,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0110/report-thumb.jpg"},{"id":53174,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0110/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd497de4b0b290850ef3ad","contributors":{"authors":[{"text":"Mueller, Gordon","contributorId":7729,"corporation":false,"usgs":true,"family":"Mueller","given":"Gordon","affiliations":[],"preferred":false,"id":191099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foster, D.K.","contributorId":97527,"corporation":false,"usgs":true,"family":"Foster","given":"D.K.","email":"","affiliations":[],"preferred":false,"id":191100,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":23131,"text":"ofr99553A - 1999 - Land and federal mineral ownership coverage for northwestern Colorado","interactions":[],"lastModifiedDate":"2012-02-02T00:08:05","indexId":"ofr99553A","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-553","chapter":"A","title":"Land and federal mineral ownership coverage for northwestern Colorado","docAbstract":"This Arc/Info coverage contains land status and Federal mineral ownership for approximately 26,800 square miles in northwestern Colorado. The polygon coverage (which is also provided here as a shapefile) contains two attributes of ownership information for each polygon. One attribute indicates where the surface is State owned, privately owned, or, if Federally owned, which Federal agency manages the land surface. The other attribute indicates which minerals, if any, are owned by the Federal govenment. This coverage is based on land status and Federal mineral ownership data compiled by the U.S. Geological Survey (USGS) and three Colorado State Bureau of Land Management (BLM) former district offices at a scale of 1:24,000. This coverage was compiled primarily to serve the USGS National Oil and Gas Resource Assessment Project in the Uinta-Piceance Basin Province and the USGS National Coal Resource Assessment Project in the Colorado Plateau.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr99553A","issn":"0094-9140","usgsCitation":"Biewick, L., Mercier, T., Levitt, P., Deikman, D., and Vlahos, B., 1999, Land and federal mineral ownership coverage for northwestern Colorado: U.S. Geological Survey Open-File Report 99-553, NA, https://doi.org/10.3133/ofr99553A.","productDescription":"NA","costCenters":[],"links":[{"id":155695,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1544,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0553-a/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b31e4b07f02db6b41d3","contributors":{"authors":[{"text":"Biewick, L. H.","contributorId":17237,"corporation":false,"usgs":true,"family":"Biewick","given":"L. 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The polygon coverage (which is also provided here as a shapefile) contains two attributes of ownership information for each polygon. One attribute indicates where the surface is State owned, privately owned, or, if Federally owned, which Federal agency manages the land surface. The other attribute indicates which minerals, if any, are owned by the Federal govenment. This coverage is based on land status and Federal mineral ownership data compiled by the U.S. Geological Survey (USGS) and the Wyoming State Bureau of Land Management (BLM) at a scale of 1:24,000. This coverage was compiled primarily to serve the USGS National Oil and Gas Resource Assessment and National Coal Resource Assessment Projects in the Northern Rocky Mountains/Great Plains Region.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99553C","issn":"0094-9140","usgsCitation":"Biewick, L., Mercier, T., Saber, T., Urbanowski, S., and Neasloney, L., 1999, Land and federal mineral ownership coverage for southern Wyoming: U.S. Geological Survey Open-File Report 99-553, NA, https://doi.org/10.3133/ofr99553C.","productDescription":"NA","costCenters":[{"id":37226,"text":"Core Science Analytics, Synthesis, and Libraries","active":true,"usgs":true}],"links":[{"id":155696,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1545,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0553-c/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Wyoming","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b31e4b07f02db6b41d8","contributors":{"authors":[{"text":"Biewick, L. H.","contributorId":17237,"corporation":false,"usgs":true,"family":"Biewick","given":"L. H.","affiliations":[],"preferred":false,"id":189507,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mercier, T.J. 0000-0002-8232-525X","orcid":"https://orcid.org/0000-0002-8232-525X","contributorId":17263,"corporation":false,"usgs":true,"family":"Mercier","given":"T.J.","affiliations":[],"preferred":false,"id":189508,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Saber, T.T.","contributorId":34543,"corporation":false,"usgs":true,"family":"Saber","given":"T.T.","email":"","affiliations":[],"preferred":false,"id":189509,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Urbanowski, S.R.","contributorId":97142,"corporation":false,"usgs":true,"family":"Urbanowski","given":"S.R.","affiliations":[],"preferred":false,"id":189511,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Neasloney, Larry","contributorId":75565,"corporation":false,"usgs":true,"family":"Neasloney","given":"Larry","email":"","affiliations":[],"preferred":false,"id":189510,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":21625,"text":"ofr99546 - 1999 - Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30' X 60' quadrangles, Wisconsin, and Michigan","interactions":[],"lastModifiedDate":"2025-12-03T14:39:16.415069","indexId":"ofr99546","displayToPublicDate":"2000-06-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"99-546","title":"Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30' X 60' quadrangles, Wisconsin, and Michigan","docAbstract":"

No abstract available.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99546","issn":"0566-8174","isbn":"0607936916","usgsCitation":"Cannon, W., Woodruff, L.G., Nicholson, S.W., Hedgman, C.A., and Barber-Delach, R., 1999, Digital bedrock geologic map of the Ashland and northern part of the Ironwood 30' X 60' quadrangles, Wisconsin, and Michigan: U.S. Geological Survey Open-File Report 99-546, HTML Document; CD-ROM, https://doi.org/10.3133/ofr99546.","productDescription":"HTML Document; CD-ROM","costCenters":[],"links":[{"id":1261,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/of99-546/index.html","linkFileType":{"id":5,"text":"html"}},{"id":390765,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_23272.htm"},{"id":155214,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"Michigan, Wisconsin","otherGeospatial":"Ashland and northern part of the Ironwood 30' X 60' quadrangles","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -91,\n 46.25\n ],\n [\n -90,\n 46.25\n ],\n [\n -90,\n 47\n ],\n [\n -91,\n 47\n ],\n [\n -91,\n 46.25\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a62e4b07f02db6363ce","contributors":{"authors":[{"text":"Cannon, W.F. 0000-0002-2699-8118","orcid":"https://orcid.org/0000-0002-2699-8118","contributorId":70382,"corporation":false,"usgs":true,"family":"Cannon","given":"W.F.","affiliations":[],"preferred":false,"id":184960,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Woodruff, L. G.","contributorId":46999,"corporation":false,"usgs":true,"family":"Woodruff","given":"L.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":184959,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nicholson, S. W.","contributorId":79504,"corporation":false,"usgs":true,"family":"Nicholson","given":"S.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":184961,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hedgman, C. 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Northwest Geophysical Associates, Inc. (NGA) was contracted by the U.S. Geological Survey (USGS) to construct a database containing original aeromagnotic data (in digital form) from surveys, maps and grids for the State of Alaska from existing public-domain magnetic data. This database facilitates thedetailed study and interpretation of aeromagnetic data along flightline profiles and allows construction of custom grids for selected regions of Alaska. The database is linked to and reflect? the work from the statewide gridded compilation completed under a prior contract. The statewide gridded compilation is also described in Saltus and Simmons (1997) and in Saltus and others (1999). The database area generally covers the on-shore portion of the State of Alaska and the northern Gulf of Alaska excluding the Aleutian Islands. The area extends from 54'N to 72'N latitude and 129'W to 169'W longitude. The database includes the 85 surveys that were included in the previous statewide gridded compilation. Figure (1) shows the extents of the 85 individual data sets included in the statewide grids. NGA subcontracted a significant portion of the work described in this report to Paterson, Grant, and Watson Limited (PGW). Prior work by PGW (described in Meyer and Saltus, 1995 and Meyer and others, 1998) for the interior portion of Alrska (INTAK) is included in this present study. The previous PGW project compiled 25 of the 85 surveys included in the statewide grids. PGW also contributed 10 additional data sets that were not included in either of the prior contracts or the statewide grids. These additional data sets are included in the current project in the interest of making the database as complete as possible. Figure (2) shows the location of the additional data sets.

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