Download or read book Pliocene Kinematic Reorganization Fault Geometry Basin Evolution and Displacement Budget Along the Furnace Creek Fish Lake Valley Fault Zone Eastern California and Western Nevada written by Nicholas James Mueller and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The active northwest-striking Furnace Creek - Fish Lake Valley fault system of eastern California and western Nevada records a protracted history of displacement that has accumulated 45-50 km of right-lateral offset since inception of motion in the middle Miocene. Geologic mapping and 40Ar/39Ar geochronologic data document that ~22 km of right-lateral offset occurred from ~11.6 - 4 Ma, at a long-term average rate of 2.9 mm/yr. A kinematic transition from wrench-dominated deformation to right-oblique transtensional deformation is recorded along the Furnace Creek - Fish Lake Valley fault zone beginning in the middle Pliocene, and has resulted in the remaining right-lateral displacement at a long-term average slip rate of 5.75 - 7 mm/yr. Both the total magnitude of right-lateral displacement and late Pleistocene slip rates are demonstrated to decrease from south to north along the Fish Lake Valley part of the fault zone and are related to displacement transfer onto kinematically linked fault systems. New geologic mapping, structural and stratigraphic analysis, and modeling of gravity data are used to determine the subsurface architecture of Fish Lake Valley and place constraints on the displacement budget for the region. Three-dimensional depth inversion of gravity data indicates that Fish Lake Valley is internally dissected by a system of faults that segments the subsurface into multiple sub-basins with depths of ~1.8 to 3.0 km, filled with lower Miocene to Quaternary volcanic and sedimentary deposits. A grid of 2-dimensional forward gravity models, based on geologic mapping and subsurface data in northern Fish Lake Valley, reveals the internal distribution of basin filling deposits and allows for the estimation of Pliocene and younger displacement on basin bounding faults. Offsets markers mapped in the highlands and inferred in the subsurface indicate that 4 to 5.5 kilometers of vertical offset has accumulated on faults bounding and within southern and central Fish Lake Valley, and around 3.6 km of vertical offset has accrued along the Emigrant Peak fault zone and structures bounding northeastern Fish Lake Valley since the middle Pliocene. Around 2 to 3 km of right-lateral displacement has been transferred from the Fish Lake Valley fault zone to structures bounding northeastern Fish Lake Valley in the last 4 Ma. These results, combined with prior work in the area, indicate that of the 23-28 km of right-lateral displacement accumulated on the Fish Lake Valley fault zone since the mid-Pliocene, only ~10 km of displacement is transferred away to kinematically linked structures to the east of the Fish Lake Valley fault zone. The remaining displacement is likely transferred to the north and west via a horse-tail array of structures underlying northwestern Fish Lake Valley.

Download or read book Quaternary and Late Pliocene Geology of the Death Valley Region written by Michael N. Machette and published by . This book was released on 2001 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Strike slip Deformation Basin Formation and Sedimentation written by Kevin T. Biddle and published by American Society of Civil Engineers. This book was released on 1985 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume is organized into three sections entitled Overview, Extensional Settings and Contractional Settings together with a glossary of terms having to do with strike-slip deformation, basin formation and sedimentation.

Download or read book Late Quaternary Faulting Along the Death Valley Furnace Creek Fault System California and Nevada written by George E. Brogan and published by . This book was released on 1991 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerial Photographic Interpretation of Lineaments and Faults in Late Cenozoic Deposits in the Eastern Part of the Benton Range 1 written by and published by . This book was released on 1991 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lineaments and faults in Quaternary and late Tertiary deposits in the southern part of the Walker Lane are potentially active and form patterns that are anomalous with respect to the typical fault patterns in most of the Great Basin. Little work has been done to identify and characterize these faults, with the exception of those in the Death Valley-Furnace Creek (DVFCFZ) fault system and those in and near the Nevada Test Site. Four maps at a scale of 1:100,000 summarize the existing knowledge about these lineaments and faults based on extensive aerial-photo interpretation, limited field investigations, and published geologic maps. The lineaments and faults in all four maps can be divided geographically into two groups. The first group includes west- to north-trending lineaments and faults associated with the DVFCFZ and with the Pahrump fault zone in the Death Valley Junction quadrangle. The second group consists of north- to east-northeast-trending lineaments and faults in a broad area that lies east of the DVFCFZ and north of the Pahrump fault zone. Preliminary observations of the orientations and sense of slip of the lineaments and faults suggest that the least principle stress direction is west-east in the area of the first group and northwest-southeast in the area of the second group. The DVFCFZ appears to be part of a regional right-lateral strike-slip system. The DVFCFZ steps right, accompanied by normal faulting in an extensional zone, to the northern part of the Walker Lane a the northern end of Fish Lake Valley (Goldfield quadrangle), and appears to step left, accompanied by faulting and folding in a compressional zone, to the Pahrump fault zone in the area of Ash Meadows (Death Valley Junction quadrangle). 25 refs.

Download or read book Strain Implications for the Formation of Clastic Dikes During Synextensional Deposition of Miocene Volcaniclastic Rocks in the Volcanic Hills Southwest Nevada written by August R. Ridde and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Eastern California Shear Zone (ECSZ) and the Central Walker Lane (CWL) constitute a tectonic boundary zone that accommodates differential displacement between the Sierra Nevada and the central Great Basin. The ECSZ and CWL are misaligned and, prior to 4 Ma and after ~13 Ma, displacement transfer between the two fault systems was accommodated along the Silver Peak-Lone Mountain (SPLM) extensional complex. The SPLM is comprised of a low-angle, northwest-dipping detachment fault separating metamorphic tectonites of the lower plate from metasedimentary Paleozoic rocks and Mesozoic plutons overlain by Cenozoic volcanic and sedimentary rocks of the upper-plate. During displacement on the SPLM detachment, the upperplate was partially disarticulated with the formation of fault-bounded synextensional basins. In the Volcanic Hills of northern Fish Lake Valley, Nevada, the upper-plate is well preserved and is composed of synextensional sedimentary and volcanic rocks. The sedimentary rocks are dated between 13 Ma and 11 Ma and are overlain unconformably by tuff ranging in age from 6.0 Ma to 5.9 Ma. In this area, the sedimentary and volcanic succession exhibits abrupt changes in thickness from 1100 m to 300 m due to differential subsidence on basin-bounding faults. Where exposed in the Volcanic Hills, the lowermost member of the synextensional succession, the Silver Peak formation, is composed of interbedded sandstone and conglomerate, containing Cenozoic volcanic and Paleozoic detritus, interbedded with ashflow tuff. Parts of this lithologic succession show evidence of rapid sedimentation with the formation of fluid escape structures in the form of subvertical sandstone and conglomerate dikes. The clastic dikes range in thickness from 0.4 cm to 2 cm and can be traced along strike for up to 3 m. The clastic dikes are primarily found in two orientations; N40°E ± 25° and N15°W ± 30° and are mutually cross-cutting at the outcrop; often forming a rhombohedral pattern. The development of two sets of dilational clastic dikes with mutually crosscutting relations suggests that they formed during flattening strain associated with displacement on basin bounding faults. These results are consistent with faultslip inversion studies showing finite flattening during displacement on faults in the Volcanic Hills.

Download or read book Geometry and Kinematics of the Olinghouse Fault Zone written by Daniel M. Sturmer and published by . This book was released on 2007 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Late quaternary faulting along the Death Valley Furnance Creek fault system California and Nevada written by and published by . This book was released on 1991 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Late Pliocene Pleistocene Evolution of the Little Pine Fault and Its Function on the Control of Sedimentation During Basin Formation written by Richard A. Lee and published by . This book was released on 2014 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: New stratigraphic and geomorphic data from the Santa Maria Basin, California, suggests that the major basin-bounding Little Pine fault system has been acting in a primarily reverse offset fashion since the late Pleistocene. A series of stratigraphic columns in the Plio-Pleistocene Paso Robles Formation measured along the Little Pine fault indicate that there was episodic uplift during the latest Pleistocene. A 20-40% increase in the percent composition of resistive, Franciscan Complex-derived cherts within active drainages indicate that uplift of the San Rafael Mountain front increased rapidly since the deposition of older sediments. The shape of stream profiles created along the Little Pine fault suggest ongoing uplift associated with the central and southeastern segments of the fault, with a lesser amount of uplift occurring further northwest along the Little Pine fault. A number of ridgeline profiles were also created which exhibit significant jumps in topography near, or just northeast of the Little Pine fault, suggesting that recent uplift is responsible. The ridgeline profiles also suggest an increased rate of uplift adjacent to the central and southeastern segments of the Little Pine fault zone, in agreement with the along-strike variations in uplift suggested by the stream profiles. Stream traces were also examined for deflections as they flowed across the Little Pine fault, but most show no significant lateral offset.

Download or read book Late Pleistocene Slip Rates Along the Panamint Valley Fault Zone Eastern California written by William R. Hoffman and published by . This book was released on 2009 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Panamint Valley fault zone (PVFZ) is one of the primary structures accommodating right lateral shear across the Eastern California Shear Zone. Current slip-rate estimates are either long-term estimates based on total offset of the system and bounds on the initiation of fault slip, or estimates that rely on undated alluvial deposits. Using field surveys and high-resolution airborne LiDAR digital topography, I utilize displaced alluvial deposits at two localities, Happy Canyon and Manly Peak Canyon, to provide new slip-rate estimates along the PVFZ. Chronologic control is provided by a newly developed chronosequence of soils in Panamint Valley, radiocarbon dating of lacustrine tufa associated with shoreline deposits, and terrestrial cosmogenic nuclide (10Be) dating of alluvial fan surfaces. At Manly Peak Canyon, debris flow levees offset 26.5 " 3.8 m with a maximum surface age of 12.5 " 1.4 ka yield a minimum extension rate of 2.1 " 0.5 mm/yr. At Happy Canyon, displaced alluvial markers demonstrate that slip along northeast-striking fault strands in the right-stepping portion of the fault zone is purely dip-slip with no lateral component. Here, an alluvial fan complex cut by a series of normal faults with total extension of 56.0 " 10.3 m has surface age estimates from a calibrated soil chronofunction ranging from ~16 - 40 ka, yielding a minimum extension rate of 2.7 " 1.5 mm/yr. Additionally, a 20.7 " 5.2 ka surface at Happy Canyon is cut by a fault scarp with 68.1 " 2.0 m of vertical offset, which yields a preliminary Late Pleistocene minimum throw rate of 3.3 " 0.7 mm/yr. Results from this thesis provide the only two slip-rate estimates along the PVFZ with chronologic control, and reveal along-strike variations in horizontal displacement direction that appear coordinated with increased subsidence in the northern part of the valley.

Download or read book Late Pleistocene Regional Extension Rate Derived from Earthquake Geology of Late Quarternary Faults Across Great Basin Nevada Between 38 5 and 40 N Latitude written by Richard D. Koehler (III) and published by . This book was released on 2009 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Great Basin encompasses over two thirds of the Pacific/North American plate boundary and accommodates up to 25 percent of the relative plate motion by active faulting. Although the majority of the deformation within the Great Basin is concentrated along its margins, a small amount of geodetically measured strain is observed between the Central Nevada Seismic Belt and the Wasatch Front. In this area, comparison between short and long-term patterns of strain accumulation and release has been difficult due to slow deformation rates and insufficient paleoseismic data. Thus, in order to document the amount and timing of late Pleistocene displacements geologic studies were performed along ten rangefront faults distributed across US HWY 50. The faults include those bounding the Desatoya, Toiyabe, Monitor, Simpson Park, Toquima, Antelope, Fish Creek, Butte, Egan, and Schell Creek Ranges. The data include geologic maps of Quaternary deposits and fault traces, paleoseismic trenches, scarp diffusion analyses, and soil characteristics in displaced alluvial surfaces. The observations are combined with paleoseismic information from previous studies to estimate a net long-term extension rate and compared to geodetic measurements. The results provide an estimate of the amount of strain released by earthquakes (~1 mm/yr) across the interior of the Great Basin during the late Pleistocene and show within broad uncertainties that the long-term rate of strain release is similar to short-term strain accumulation over the same region. The agreement in extension rate estimates over different time scales implies that relatively slow extensional deformation has been operative in the Great Basin east of the Central Nevada Seismic Belt through the late Pleistocene. From east to west the ranges become progressively more northeast trending and crustal velocities bend to the northwest. The organization of late Pleistocene ruptures into left stepping strands that trend oblique to rangefronts and are roughly perpendicular to N60W extension may be the geomorphic expression of a component of right lateral shear within the interior of the Great Basin.

Download or read book Oligocene Paleotopography and Structural Evolution of the Pah Rah Range Western Nevada written by Benjamin M. Delwiche and published by . This book was released on 2007 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Left-stepping, northwest-striking dextral faults in the northern Walker Lane accommodate approximately 15 to 20% of the North American-Pacific plate motion. Tuff-filled Oligo-Miocene paleovalleys provide piercing lines from which to gage offset across the strike-slip faults. To constrain offset across the northwest-striking dextral Warm Springs Valley fault, detailed mapping and structural analysis were carried out in the Pah Rah Range on a highly faulted sequence of ash-flow tuffs that fill an east-trending paleovalleys carved in Mesozoic basement. The tuffs are locally interbedded with fluvial gravels and pinch out southward against a well-exposed paleovalleys margin. Middle Miocene mafic lavas and conglomerate disconformably overlie the Oligo-Micocene tuffs. The paleovalley in the Pah Rah Range may correlate with other paleovalleys across the Warm Springs Valley fault, either one on the northwest flank of Dogskin Mountain or another in the northern Curnow Range. A correlation with the Dogskin Mountain paleovalley implies approximately 20km of dextral offset on the fault. However, some stratigraphic differences between these paleovalleys and the apparent termination of the fault only 10km southeast of the study area argue against such a correlation. Instead, similar stratigraphy and structures favor a correlation between paleovalleys in the Pah Rah Range and northern Curnow Range. Such a correlation indicates approximately 4 to 8km of dextral offset along the southeast part of the Warm Springs Valley fault.-- adapted from abstract.

Download or read book The Southern Death Valley Fault Zone written by Darryl Keith Willis and published by . This book was released on 1993 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reorganization and Superposition of Late Eocene to Holocene Extension and Late Cenozoic Displacement Field Conservation on a Kinematically Linked Array of Basin bounding Faults North central Great Basin written by Jeffery Paul Dunham and published by . This book was released on 2016 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three superposed directions of north-south, east-northeast and west-northwest extension were accommodated during Cenozoic displacement on a complex array of high-angle faults in the Crescent Valley region of north-central Nevada. Contemporary N66°W extension was initiated at about 9 Ma and is responsible for the accumulation of 1.5 to 2.5 km of sedimentary and volcanic rocks in spatially restricted half-grabens during the development of present mountain ranges. Earlier N75°E extension commenced at about 17 Ma and was accompanied by deposition of volcanic and sedimentary sequences that range up to several hundred meters thick. These rocks show only minor offset on syndepositional faults and minor thickness variations across the region. The earliest phase of extension, N10°E, started at or before 34 Ma during localized accumulation of 1.5 to as much as 4 km of volcanic tuff and sedimentary rocks in a west-northwest-trending fault-bounded volcanic center. Outside of the structural depocenter, coeval volcanic and sedimentary rocks are only hundreds of meters thick, with only minor lateral variations. All structures in the fault array were active during each period of extensional deformation. Prominent basin and range structures and topography did not evolve until late Miocene to Holocene extension, suggesting that earlier magnitudes of extension were modest and not associated with high strain-rates. Three-dimensional fault displacement models illustrate that the extensional faults of the Crescent Valley fault system are kinematically coordinated over length scales of kilometers to tens of kilometers. The fault network, consisting of northwest, north-northwest, north-south, north-northeast, and northeast oriented normal and oblique-slip structures, displays substantial fluctuations in the along-strike displacement on individual faults. Cross sections, constructed using geologic maps, gravity inversion depth to basement models, a seismic reflection profile, and recent west-northwest extension direction, indicate that more than 90 percent of the along-strike variations in the magnitude of fault offset is accommodated by displacement transfer within the fault system. The remaining deformation is likely attributed to uncertainty in the model, but may represent non-recoverable strain accumulation within fault blocks. Our analysis indicates that in order to completely conserve the fault displacement field, fault systems of length scales greater than 50 km are needed.

Download or read book Neogene Stratigraphy of the Fish Creek Vallecito Section Southern California written by Charles David Winker and published by . This book was released on 1987 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tephra Layers of Blind Spring Valley and Related Upper Pliocene and Pleistocene Tephra Layers California Nevada and Utah written by Andrei M. Sarna-Wojcicki and published by . This book was released on 2005 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potassic Igneous Rocks and Associated Gold Copper Mineralization written by Daniel Müller and published by Springer. This book was released on 2013-04-17 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been increasing interest from geoscientists in potassic ig neous rocks. Academic geoscientists have been interested in their petrogenesis and their potential value in defining the tectonic setting of the terranes into which they were intruded, and exploration geoscientists have become increasingly interested in the association of these rocks with major epithermal gold and porphyry gold-copper deposits. Despite this current interest, there is no comprehensive textbook that deals with these aspects of potassic igneous rocks. This book redresses this situation by elucidating the characteristic features of potassic (high-K) igneous rocks, erecting a hierarchical scheme that allows interpre tation of their tectonic setting using whole-rock geochemistry, and investigating their associations with a variety of gold and copper-gold deposits, worldwide. About two thirds of the book is based on a PhD thesis by Dr Daniel Muller which was produced at the Key Centre for Strategic Mineral Deposits within the Department of Geology and Geophysics at The University of Western Australia under the supervision of Professor David Groves, the late Dr Nick Rock, Professor Eugen Stumpf!, Dr Wayne Taylor, and Dr Brendon Griffin. The remainder of the book has been compiled from the literature using the collective experience of the two authors. The book is dedi cated to the memory of Dr Rock who initiated the research project but died before its completion.