Download or read book Devonian Stratigraphy and Depositional Environments of the Northern Antelope Range Eureka County Nevada written by William R. Trojan and published by . This book was released on 1978 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy and Depositional Environments of the Upper Devonian Fenstermaker Limestone Eureka County Nevada written by Jeff L. Waldman and published by . This book was released on 1990 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Upper Devonian Fenstermaker Limestone is a thickening-upward sequence of interbedded sandy intrapelsparite and subordinate calcareous siltstone and mudstone which averages 190 ft (58 m) thick in the northern Antelope Range. The Fenstermaker Limestone is revised and restricted herein to include only those rocks above a basinal shale sequence of the upper Denay Limestone and below the Mississippian Davis Spring Formation, and replaces the names "Devonian sandstone" of Trojan (1978) and the "Fenstermaker Wash Formation" of Hose and others (1982). Sandy limestone of the Fenstermaker Limestone was deposited rapidly, above upper Denay basinal shales, as resedimented beds in Frasnian Montagne Noir conodont zone 13 and the Lower Famennian Middle triangularis Zone. Reworked conodonts are present at numerous stratigraphic levels in the Fenstermaker, indicating erosion on the inner or middle carbonate platform during two Upper Devonian eustatic regressions (in lower and upper T-R cycle Ild; western U.S. events 7 and 8). Deposition of the Fenstermaker Limestone was by allodapic sediment gravity flows on an outer-shelf-basin ramp or at the toe of a low-angle (
Download or read book Devonian and Mississippian Rocks of the Northern Antelope Range Eureka County Nevada written by and published by . This book was released on 1982 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy Petrology and Depositional Environments of the Upper Devonian Devils Gate Limestone Eureka County Nevada written by Donald Haskins and published by . This book was released on 1979 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paleozoic sequence stratigraphy biostratigraphy and biogeography written by John A and published by Geological Society of America. This book was released on 1997-01-01 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy and Structure of the Northern Part of the Fish Creek Range Eureka County Nevada written by Jill M. Bird and published by . This book was released on 1989 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upper Cambrian through Middle Devonian carbonate and clastic sequences of the northern part of the Fish Creek Range represent shallow-shelf sedimentation in the Cordilleran miogeosyncline. The lower and middle Paleozoic section exposed in the northern Fish Creek Range fits well within regional facies patterns and paleogeographic reconstructions. The Upper Cambrian Dunderberg Shale was deposited in a muddy outer shelf embayment which extended eastward into the Eureka area. The embayment was eliminated as seas regressed in late Dresbachian time and marine carbonate sedimentation (represented by the Catlin Member o-f the Wind-fall Formation) was established. The argillaceous Bullwhacker Member of the Windfall was deposited in deeper shelf waters as the sea transgressed briefly during Trempeleauian time. Shallow-shelf carbonates of the Lower Ordovician Goodwin Limestone are succeeded by Ninemile Formation strata representing deposition in a muddy embayment, similar to the Late Cambrian embayment in the Eureka area. Regression followed, and a shallow-water Girvanella-rich carbonate bank prograded westward during Whiterockian (early Middle Ordovician) time, represented by the lower part of the Antelope Valley Limestone. Mudstone and wackestone of the upper part of the Antelope Valley Limestone was deposited in quieter, deeper, or more protected environments shoreward of the bank margin. Basal sands of the Eureka Quartzite prograded westward across the carbonate shelf during the Middle Ordovician. Carbonate sedimentation persisted in some areas in silty embayments, and is represented by the Copenhagen Formation. Transgression began during Eureka deposition, and shelf-lagoon carbonates of the Hanson Creek Formation were deposited as transgression continued during Late Ordovician and earliest Silurian time . The lower part of the Silurian-Lower Devonian Lone Mountain Dolomite in the Fish Creek Range is transitional to outer platform carbonate-bank deposits at the type section to the northwest, and to restricted, inner-platform deposits of the partly correlative Laketown Dolomite to the east. Rhythmically alternating, shallow subtidal and restricted peritidal deposits form the upper part of the Lone Mountain in the study area, and reflect progradation of peritidal environments as the earliest Devonian sea regressed. Younger Devonian rocks in the Fish Creek Range lie within a north-trending transitional belt in which shallow, eastern lithofacies (predominantly dolomite) and deeper-water, limestone lithofacies intertongue. Peritidal deposits of the Beacon Peak Dolomite prograded westward during the mid-Early Devonian. Subtidal, fossiliferous limestone of the Bartine Member of the McColley Canyon Formation was deposited as transgression began during Emsian time (qronberoi to inversus conodont Zones). Lime mudstone, wackestone, and packstone of the Coils Creek Member of the McColley Canyon Formation was deposited in quieter, slightly deeper, shelf waters during late Emsian time (inversus Zone). Regression followed during latest Emsian time (serotinus Zone). Dolomite and crinoidal dolomite of the Sadler Ranch Formation (latest Emsian to Eifelian) was deposited in shallow waters of the outer shelf. The overlying Coarse Crystalline Member of the Oxyoke Canyon Sandstone is a regressive sequence of quartzose dolomite and dolomite-cemented sandstone deposited on the inner platform, where beach and intertidal environments were separated by a low-relief coastline. Thick-bedded, peritidal dolomite of the lower part of the Sentinel Mountain-Bay State interval represents progradation of peritidal facies across the shallow platform during early Middle Devonian time. The upper part of the Sentinel Mountain-Bay State interval was deposited in more circulated, shallow-marine carbonate-bank environments. The lower part of the Devils Gate Limestone in the study area reflects deposition in shallow, agitated shelf waters and quieter, deeper, shelf lagoons and embayments. Inundation of the carbonate platform followed and is reflected by a shift to deeper water facies during Frasnian (early Late Devonian) time. The Fish Creek Range was affected by Sevier hinterland deformation during the Late Mesozoic; N to N15E-trending folds reflect overall east-west compression. Upper Cretaceous granitic rocks were emplaced at depth beneath the southwest side of the study area, where conodont alteration indices from Paleozoic collections indicate paleotemperatures of 500-600 C. Two-mica granitic dikes, exposed at McCulloughs Butte, intrude Ordovician rocks. Thermal effects may have promoted initial gravity sliding of the Silurian-Devonian section off of the Ordovician section at the Hanson Creek level (Upper Ordovician-Lower Silurian). Low-angle normal faulting within this stratigraphic level is pervasive in the northern part of the Fish Creek Range. It is interpreted that faulting at the Hanson Creek level was initiated at about the same time that the Upper Cretaceous intrusion was emplaced. Movement along the faults may have continued or been renewed during Oligocene extension. Low-angle normal faulting at the Silurian and Lower Devonian levels post-dates faulting at the Upper Ordovician level. It is interpreted that these faults developed during Oligocene uplift and extension. Volcanism and shallow intrusive activity affected the northern Fish Creek Range during earliest Oligocene time, and is represented by the Ratto Springs Rhyodacite. High-angle normal faults typical of basin-and-range extension are common through out the area and represent the most recent phase of deformation.
Download or read book Lower and Middle Devonian stratigraphy and depositional environments of the Sheep Desert Pintwater and Spotted Ranges Northern Clark County Nevada written by Linda Jane Jarvis and published by . This book was released on 1981 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: During much of the Early and Middle Devonian, shallow normal marine and peritidal sediments were deposited in northwestern Clark County, Nevada. Lack of a standard stratigraphic nomenclature for the area necessitates utilizing terminology from central Nevada and western Utah. The Sevy Dolomite represents Early Devonian deposition in a tidal flat environment. A Zlichovian transgression initiated deposition of the normal marine McColley Canyon Formation in the area. Continuation of that transgression was responsible for the deposition of the lower part of the Pintwater Formation, a new formation which consists of silty, argillaceous dolomite with abundant secondary chert. A Dalejan regression occurred during deposition of the upper part of the Pintwater Formation; it was during the later phases of this regression that the Oxyoke Canyon Sandstone was deposited in a complex barrier bar system which paralleled the coastline. Three Middle Devonian transgressions of varying magnitude have been recognized in southern Nevada. The first transgression, during the early Eifelian, was responsible for the widespread deposition of the Coarse Crystalline Member of the Simonson Dolomite. The Coarse Crystalline Member represents an entire transgressive-regressive cycle. The second Middle Devonian transgression, which occurred later in the Eifelian, initiated deposition of the restricted, shallow subtidal to supratidal Alternating Member of the Simonson Dolomite. Deposition of this unit was marked by periodic minor rises in sea level. Each dark-light dolomite couplet represents a single transgressive pulse followed by upward-shallowing sedimentation. Peritidal sedimentation was brought to an end by the third Middle Devonian transgression. This transgression, which occurred during the middle to late Givetian, brought the deeper water lithotope of the Guilmette Formation into the area. The tectonic setting in southern Nevada during the Early Devonian was significantly different than that in central Nevada; southern Nevada facies are different than central Nevada facies, and a relatively condensed conodont sequence indicates a slower rate of subsidence. During the Middle Devonian, however, facies throughout southern and east-central Nevada are markedly similar, as is the timing of depositional events. This indicates that the tectonic setting along the southern Cordilleran margin was more uniform by Middle Devonian time.
Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 24 (thesis year 1979) a total of 10,033 theses titles from 26 Canadian and 215 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. While Volume 24 reports these submitted in 1979, on occasion, certain universities do report theses submitted in previous years but not reported at the time.
Download or read book Stratigraphy and Structure of the Southern Sulphur Spring Range Eureka County Nevada written by Joseph T. Lipka and published by . This book was released on 1987 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Early Paleozoic limestones and dolomites of the shallow shelf transitional facies belt were mapped in the southern Sulphur Spring Range, Eureka County, Nevada. The four youngest units in the map area are in fault contact with the Lower Devonian rocks and were probably transported westward, along a low-angle normal fault. The crinoidal dolomites of the Hanson Creek Formation, dated as latest Ordovician in the map area, were deposited in a low-energy lagoon. Overlying the Hanson Creek Formation, with a gradational contact, is the lower member of the Lone Mountain Dolomite, a probable reef complex. The exposed thickness of the lower Lone Mountain Dolomite is estimated to be 250 feet. The Lower Devonian Old Whalen Member of the Lone Mountain Dolomite is composed of well-bedded, alternating brown and gray dolomites. The repetition of rock types in the Old Whalen Member indicates recurring shallow marine environments on a broad carbonate platform. The Old Whalen is estimated to be 1400 feet thick. Directly overlying the Old Whalen Member, is the Kobeh Member of the McColley Canyon Formation. Rocks of the McColley Canyon Formation were deposited on a shallow shelf under normal marine conditions. The mid-Lower Devonian Kobeh Member is sparsely to abundantly fossiliferous and varies from a peloidal wackestone to a peloidal sandy wackestone to a sandy peloidal packstone. The thickness is 276 feet. Overlying the Kobeh Member are the abundantly fossiliferous beds of the lower part of the Bartine Member. The lower part, of the Bartine ranges from a wackestone to a packstone and weathers to a chacteristic yellowish tan. The upper part of the Bartine varies from wackestone to packstone, is darker in color, and is sparsely to moderately fossiliferous. The thickness of the Bartine Member is 189 feet, and it is late Early Devonian in age. The Sadler Ranch Formation is a dolomitic wackestone containing conoids with or without brachiopods, and it is latest Early Devonian in age. The Sadler Ranch Formation was deposited on a shallow shelf under normal marine conditions. Above the Sadler Ranch Formation is the lower member of the Oxyoke Canyon Sandstone. The lower member of the Oxyoke varies from a peloidal packstone to sandy peloidal wackestone to quartzite. The upper member of the Oxyoke Canyon Sandstone is a structureless dolomitic mudstone. The Oxyoke Canyon Sandstone was probably deposited in a high to moderate energy lagoon with a subsequent decrease in depositional energy. The Middle Devonian Sentinel Mountain Dolomite overlies the Oxyoke Canyon Sandstone. The Sentinel Mountain is a structureless to finely laminated dolomite that was deposited in a lagoon that initially had open circulation, but which was later cut off. The youngest formation in the map area is the Permian Garden Valley Formation which is a reddish brown silicified conglomerate. The Sadler Ranch Formation, Oxyoke Canyon Sandstone, Sentinel Mountain Dolomite, and Garden Valley Formation are all present as allochthonous blocks, which were transported from the east as a result of movement along low-angle normal faults. The blocks were juxtaposed on top of the autochthonous Old Whalen Member of the Lone Mountain Dolomite and on the McColley Canyon Formation. Denudation of the Kobeh and Bartine Members of the McColley Canyon Formation occurred as a result of the movement on the faults. The timing of the movement on the low-angle normal faults is estimated to be Cretaceous because of the eastern source and the pre-Cretaceous age of the allochthonous rocks. The age is still problematical as a consequence of the lack of any cross-cutting dikes or other age-determinable units.
Download or read book Petrology and Biostratigraphy of Middle Lower Devonian Strata Southern Cortez Mountains Nevada written by David James Christiansen and published by . This book was released on 1980 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural and Stratigraphic Investigations and Petroleum Potential of Nevada with Special Emphasis South of the Railroad Valley Producing Trend written by Nevada Petroleum Society and published by . This book was released on 1994 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1983 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Aspects of Lower and Middle Devonian Stratigraphy in Eureka County Nevada written by George Warner Kendall and published by . This book was released on 1975 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Devonian Stratigraphy and Paleontology of The Roberts Mountains Region Nevada written by Charles Warren Merriam and published by Geological Society of America. This book was released on 1940 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SP007 Bibliography of Nevada geology and mineral resources through 1980 an alphabetical listing by author written by and published by NV Bureau of Mines & Geology. This book was released on with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Devonian of the World written by Canadian Society of Petroleum Geologists and published by Calgary, Alta., Canada : Canadian Society of Petroleum Geologists. This book was released on 1988 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three volumes, " Devonian of the World" constitute the proceedings of the second International Symposium on the Devonian System, sponsored by the Canadian Society of Petroleum Geologists in Calgary Canada in August, 1987.
Download or read book Stratigraphy Depositional Environments and Diagenesis of the Devonian Simonson and Guilmette Formations in the White Pine Egan and Schell Creek Ranges White Pine County Nevada written by F. Michael DeDen and published by . This book was released on 1993 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
