Miscellaneous Field Studies Map最新文献

Aeromagnetic map of the Death Valley ground-water model area, Nevada and California 死亡谷地下水模型区、内华达州和加利福尼亚州的航空磁图

Miscellaneous Field Studies Map Pub Date : 2003-04-21 DOI: 10.2172/809981

D. Ponce, R. Blakely

引用次数: 20

Hydrostructural maps of the Death Valley regional flow system, Nevada and California 死亡谷区域流动系统的水文结构图，内华达州和加利福尼亚州

Miscellaneous Field Studies Map Pub Date : 2002-03-15 DOI: 10.2172/793301

C. Potter, D. Sweetkind, R. Dickerson, M. Killgore

{"title":"Hydrostructural maps of the Death Valley regional flow system, Nevada and California","authors":"C. Potter, D. Sweetkind, R. Dickerson, M. Killgore","doi":"10.2172/793301","DOIUrl":"https://doi.org/10.2172/793301","url":null,"abstract":"The locations of principal faults and structural zones that may influence ground-water flow were compiled in support of a three-dimensional ground-water model for the Death Valley regional flow system, which covers 80,000 km2 in southwestern Nevada and southeastern California. Faults include Neogene extensional and strike-slip faults and pre-Tertiary thrust faults. Emphasis was given to characteristics of faults and deformed zones that may have a high potential for influencing hydraulic conductivity. These include: (1) faulting that results in the juxtaposition of stratigraphic units with contrasting hydrologic properties, which may cause ground-water discharge and other perturbations in the flow system; (2) special physical characteristics of the fault zones, such as brecciation and fracturing, that may cause specific parts of the zone to act either as conduits or as barriers to fluid flow; (3) the presence of a variety of lithologies whose physical and deformational characteristics m ay serve to impede or enhance flow in fault zones; (4) orientation of a fault with respect to the present-day stress field, possibly influencing hydraulic conductivity along the fault zone; and (5) faults that have been active in late Pleistocene or Holocene time and areas of contemporary seismicity, which may be associated with enhanced permeabilities.","PeriodicalId":333680,"journal":{"name":"Miscellaneous Field Studies Map","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130752103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Interpretive geologic cross sections for the Death Valley regional flow system and surrounding areas, Nevada and California 内华达州和加利福尼亚州死亡谷区域流系统及其周边地区的解释地质剖面

Miscellaneous Field Studies Map Pub Date : 2001-11-09 DOI: 10.2172/789492

D. Sweetkind, R. Dickerson, R. Blakely, Paul D. Denning

{"title":"Interpretive geologic cross sections for the Death Valley regional flow system and surrounding areas, Nevada and California","authors":"D. Sweetkind, R. Dickerson, R. Blakely, Paul D. Denning","doi":"10.2172/789492","DOIUrl":"https://doi.org/10.2172/789492","url":null,"abstract":"This report presents a network of 28 geologic cross sections that portray subsurface geologic relations within the Death Valley regional ground-water system, a ground-water basin that encompasses a 3 degree x 3 degree area (approximately 70,000 square kilometers) in southern Nevada and eastern California. The cross sections transect that part of the southern Great Basin that includes Death Valley, the Nevada Test Site, and the potential high-level nuclear waste underground repository at Yucca Mountain. The specific geometric relationships portrayed on the cross sections are discussed in the context of four general sub-regions that have stratigraphic similarities and general consistency of structural style: (1) the Nevada Test Site vicinity; (2) the Spring Mountains, Pahrump Valley and Amargosa Desert region; (3) the Death Valley region; and (4) the area east of the Nevada Test Site. The subsurface geologic interpretations portrayed on the cross sections are based on an integration of existing geologic maps, measured stratigraphic sections, published cross sections, well data, and geophysical data and interpretations. The estimated top of pre-Cenozoic rocks in the cross sections is based on inversion of gravity data, but the deeper parts of the sections are based on geologic conceptual models and are more speculative.","PeriodicalId":333680,"journal":{"name":"Miscellaneous Field Studies Map","volume":"354 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132372287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Logs and paleoseismic interpretations from trenches 14C and 14D on the Bow Ridge fault, northeastern Yucca Mountain, Nye County, Nevada 内华达州奈县尤卡山东北部弓岭断层14C和14D沟的测井和古地震解释

Miscellaneous Field Studies Map Pub Date : 1997-12-31 DOI: 10.2172/578446

C. Menges, E. Taylor, G. Vadurro, J. Oswald, R. Cress, M. Murray, S. Lundstrom, J. Paces, S. Mahan

{"title":"Logs and paleoseismic interpretations from trenches 14C and 14D on the Bow Ridge fault, northeastern Yucca Mountain, Nye County, Nevada","authors":"C. Menges, E. Taylor, G. Vadurro, J. Oswald, R. Cress, M. Murray, S. Lundstrom, J. Paces, S. Mahan","doi":"10.2172/578446","DOIUrl":"https://doi.org/10.2172/578446","url":null,"abstract":"Detailed studies of trenches 14D and 14C on the Bow Ridge fault indicate two to three displacements and long recurrence intervals during the middle to late Quaternary. The main trace of the fault is marked by a thick (20--40 centimeters wide) subvertical shear zone coated with multiple carbonate-silica laminae and several generations of fine-grained fissure-fill debris. Exposed in the trenches is a vertically stacked sequence of thin (0.3--1.5 meters thick) fine-grained colluvial, alluvial, and eolian deposits that commonly contain smaller wedge-shaped units or several weakly to strongly developed buried paleosols, or both. The two to three surface-rupture events are recognized at discrete stratigraphic intervals in the sequence based on (1) incremental up-section decreases in offset of marker horizons, (b) upward terminations of shear zones, fissure fills, and fractures, and (c) the position of small scarp-derived colluvial wedges deposited adjacent to the fault above downfaulted marker horizons. Preferred estimates of the vertical displacement per event are 12 and 40 centimeters. Left-oblique striations are observed on carbonate fault laminae, which, if tectonic in origin, increase the vertical displacement by factors of 1.1 to 1.7, yielding preferred net slip displacements per event of 13 to 70 centimeters. Thermoluminescence ages of 48 {+-} 20 and 132 {+-} 23 thousand years bracket the ages of the events, which probably occurred near the bounding ages of the time interval. These age constraints suggest long, average recurrence intervals between the three events of 75 to 210 ky; the preferred values range between 100 to 140 ky. The small net cumulative displacement of two dated reference horizons yield very low fault slip rates of 0.002 to 0.007 millimeters per year; the preferred value is 0.003 millimeters per year.","PeriodicalId":333680,"journal":{"name":"Miscellaneous Field Studies Map","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126834204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Trench logs from a strand of the Rock Valley Fault System, Nevada Test Site, Nye County, Nevada 来自内华达州奈县内华达试验场岩石谷断层系统的一条海沟原木

Miscellaneous Field Studies Map Pub Date : 1987-12-31 DOI: 10.2172/60180

J. Yount, R. Shroba, C. R. McMasters, H. E. Huckins, E. A. Rodríguez

引用次数: 9

Northern Colorado and northeastern Utah showing the distribution of uranium deposits 科罗拉多北部和犹他州东北部显示铀矿分布

Miscellaneous Field Studies Map Pub Date : 1956-04-01 DOI: 10.3133/MF130

F. Osterwald, B. Dean

引用次数: 2

Drill-hole logs and location map of surface and shallow subsurface materials, central and southern Delmarva Peninsula, Maryland, Delaware, and Virginia Delmarva半岛中部和南部、马里兰州、特拉华州和弗吉尼亚州的钻孔测井和地表和浅层地下物质位置图

Miscellaneous Field Studies Map Pub Date : 1900-01-01 DOI: 10.3133/MF899

M. Hess