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Snake River Plain Yellowstone Volcanic Province
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Book Synopsis Snake River Plain Yellowstone Volcanic Province by : Kerry L. Ruebelmann
Download or read book Snake River Plain Yellowstone Volcanic Province written by Kerry L. Ruebelmann and published by American Geophysical Union. This book was released on 1989 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Field Trip Guidebooks Series, Volume 305. This field trip was conceived as a way to introduce one of the major volcano-tectonic features of the North American continent to visiting scientists from abroad. Its objectives are to allow the participants to observe first hand the geologic relationships relevant to the formation of the Snake River Plain (SRP) and to discuss various interpretations of SRP genesis. The approach to these objectives is to travel the length of the plain from northeast to southwest and to examine in a logical manner, from younger to older volcanic rocks, the relationships important to an understanding of its origin and evolution (Fig. 1). Even though basaltic volcanism is commonly thought of in association with the SRP, this field trip will emphasize the importance of silicic volcanism because of its much greater volume and because of its profound effect on the upper crustal structure of the SRP.
Book Synopsis Tectonic and Magmatic Evolution of the Snake River Plain Volcanic Province by : Bill Bonnichsen
Download or read book Tectonic and Magmatic Evolution of the Snake River Plain Volcanic Province written by Bill Bonnichsen and published by Idaho Geological Survey. This book was released on 2002 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Track of the Yellowstone Hotspot by : Lisa A. Morgan
Download or read book The Track of the Yellowstone Hotspot written by Lisa A. Morgan and published by . This book was released on 2009 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Track of the Yellowstone Hotspot by : Lisa A. Morgan
Download or read book Track of the Yellowstone Hotspot written by Lisa A. Morgan and published by . This book was released on 2008 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This field trip highlights various stages in the evolution of the Snake River Plain? Yellowstone Plateau bimodal volcanic province, and associated faulting and uplift, also known as the track of the Yellowstone hotspot. The 16 Ma Yellowstone hotspot track is one of the few places on Earth where time-transgressive processes on continental crust can be observed in the volcanic and tectonic (faulting and uplift) record at the rate and direction predicted by plate motion. Recent interest in young and possible renewed volcanism at Yellowstone along with new discoveries and synthesis of previous studies, i.e., tomographic, deformation, bathymetric, and seismic surveys, provide a framework of evidence of plate motion over a mantle plume. This 3-day trip is organized to present an overview into volcanism and tectonism in this dynamically active region. Field trip stops will include the young basaltic Craters of the Moon, exposures of 12?4 Ma rhyolites and edges of their associated collapsed calderas on the Snake River Plain, and exposures of faults which show an age progression similar to the volcanic fields. An essential stop is Yellowstone National Park, where the last major caldera-forming event occurred 640,000 years ago and now is host to the world?s largest concentration of hydrothermal features (>10,000 hot springs and geysers). This trip presents a quick, intensive overview into volcanism and tectonism in this dynamically active region. Field stops are directly linked to conceptual models related to hotspot passage through this volcano-tectonic province. Features that may reflect a tilted thermal mantle plume suggested in recent tomographic studies will be examined. The drive home will pass through Grand Teton National Park, where the Teton Range is currently rising in response to the passage of the North American plate over the Yellowstone hotspot.
Book Synopsis Geology of the Central and Eastern Snake River Plain Part I by : William A Szary M S
Download or read book Geology of the Central and Eastern Snake River Plain Part I written by William A Szary M S and published by Independently Published. This book was released on 2021-08-21 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Central and Eastern Snake River Plain is a bimodal volcanic province formed by migration of the North American Plate westward over the Yellowstone Hot Spot. Volcanic units consist of rhyolitic flows and ash fall deposits with basaltic flows originating from eruptive and volcanic centers mainly known as the Bruneau-Jarbidge, Juniper Mountain-Owyhee, Owyhee-Humboldt, and Twin Falls volcanic centers. Chapter 1 presents the Central Snake River Plain volcanic province introducing sample locations where zircon populations occur from the Archaen to the Pleistocene periods. Modern stream signatures and drainage development are discussed. Chapter 2 addresses Snake River Plain rhyolites presenting volcanic progression, tectonic associations, and petrology. Chapter 3 presents details on Miocene tuff deposits belonging to the McMullen Creek Tuff. Chapter 4 discusses the transition from ash flow to voluminous lava flow activity in the Bruneau-Jarbidge eruptive center. Chapter 5 presents pre- and post- Juniper Mountain Volcanic Center conditions of rhyolitic, tuffaceous, and basaltic compositions. Chapter 6 presents basaltic units of the Bruneau-Jarbidge and Twin Falls regional areas. Chapter 7 begins the Eastern Snake River Plain discussion providing an overview of the provincial geology. Chapter 8 discusses Eastern Snake River Plain extension and subsidence including basin and range faulting and basin infilling. Chapter 9 presents Quaternary evolution of tholeiitic basalt eruptive centers. This chapter concludes Part I of a two part series on the ESRP. Part II presents a field excursion leading to Craters of the Moon National Monument, through the national monument, and introduces volcanics associated with the Great Rift of Idaho.
Book Synopsis Bridging Basalts and Rhyolites in the Yellowstone Snake River Plain Volcanic Province: The Elusive Intermediate Step by : Dawid Szymanowski
Download or read book Bridging Basalts and Rhyolites in the Yellowstone Snake River Plain Volcanic Province: The Elusive Intermediate Step written by Dawid Szymanowski and published by . This book was released on 2015 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many magmatic provinces produce strongly bimodal volcanism with abundant mafic and silicic magmas yet a scarcity of intermediate (55?65 wt.% SiO2) compositions. In such bimodal settings, much debate revolves around whether the basaltic magmas act as heat sources to melt pre-existing crust, or whether they are the parents to the silicic magmas (a fractionation-dominated evolution). Until now, this lack of coeval intermediate compositions has commonly been used to support models involving large degrees of crustal melting. Detailed analysis of mineral cargoes of ignimbrites from the 6.6?4 Ma Heise volcanic field in the famously bimodal Yellowstone?Snake River Plain (YSRP) volcanic province has revealed the existence of intermediate liquids associated with main stage rhyolitic volcanism. Two closely spaced rhyolitic ignimbrites, the Wolverine Creek Tuff and the Conant Creek Tuff, contain pyroxene crystals with major and trace elemental compositions in equilibrium with intermediate melts prior to significant plagioclase fractionation. Hosted within these crystals are glassy melt inclusions that have compositions (57?67 wt.% SiO2) directly recording the intermediate liquids. The combined mineral and melt inclusion data provide the first evidence for the occurrence of intermediate melts, typically erased in the high temperature YSRP ignimbrites by crystal resorption or diffusive re-equilibration. The results suggest the existence of mostly unerupted mid-crustal reservoirs that drive magma compositions towards the erupted rhyolites via assimilation-fractional crystallisation (AFC).
Book Synopsis Yellowstone-Snake River Plain and Mount Hood by :
Download or read book Yellowstone-Snake River Plain and Mount Hood written by and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Deformation of the Yellowstone Caldera, Hebgen Lake Fault Zone, and Eastern Snake River Plain from GPS, Seismicity, and Moment Release by : Christine Maria Puskas
Download or read book Deformation of the Yellowstone Caldera, Hebgen Lake Fault Zone, and Eastern Snake River Plain from GPS, Seismicity, and Moment Release written by Christine Maria Puskas and published by . This book was released on 2000 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Yellowstone caldera, part of the late Quaternary Yellowstone volcanic field, exhibits contrasting deformation styles with the adjacent Hebgen Lake fault, site of a 1959 M(L) 7.5 earthquake, and the eastern Snake River Plain, the 16 Ma-old bimodal rhyolite-basalt volcanic field that was created as the North American continent passed over the Yellowstone hotspot. The Yellowstone volcanic field is at the eastern boundary of the Basin and Range tectonic province and experiences both regional extension and volcanic activity. 1987-1995 GPS measurements by the University of Utah, along with 1 973-1987 U.S. Geological Survey trilateration data for the Hebgen Lake fault and 1990 National Geodetic Survey GPS data for the Snake River Plain, were combined to evaluate the contemporary deformation of this volcanic system. Data from these sources indicate that the overall deformation is extensional with local variations in the Yellowstone caldera, the Hebgen Lake fault zone, and the Snake River Plain. The extension rate is about 5 mm/yr in a NE-SW direction across the Yellowstone -Hebgen Lake region; when the Snake River Plain is included, extension rates increase to 6.7 mm/yr across the entire Yellowstone-Snake River Plain volcanic system. The local variations in the regional pattern include: 1) horizontal compression of 3.6 mm/yr and subsidence up to 15 mm/yr within the caldera, 2) northeast extension of 2.4 mm/yr across the Hebgen Lake fault, and 3) extension rates of 1.9 mm/yr in the NE-SW direction in the central part of the Snake River Plain. In the caldera, the principal horizontal deformation is radially compressive. Caldera subsidence was observed to be slowing from 1993 to 1995, with a possible return to uplift in 1995. The Yellowstone caldera had a more heterogeneous strain field than the nearby fault, which is likely due to local deformation from magmatic and hydrothermal processes. At the Hebgen Lake fault, only 10 km from the contracting caldera, the principal deformation is extensional. Extension has slowed from 4.0 to 2.4 mm/yr between 1973 and 1995, indicating that viscoelastic processes may control strain release following the 1959 earthquake. The different deformation styles imply a sharp stress transition between the Yellowstone caldera and Hebgen Lake fault zone where stress orientations rotate and magnitudes change sign over a distance of only a few kilometers while strain rates remain small. This transition also corresponds to the area of greatest seismicity in the entire Yellowstone-Hebgen Lake region. To compare seismic and aseismic deformation, earthquake magnitudes from the Yellowstone seismic catalog were converted to scalar seismic moment rates, and the GPS-derived strain rates were converted into geodetic moment rates. Seismic moment rates reflect slip on faults and geodetic moment rates reflect total deformation, so the difference between the two types of moment rates gives an estimate of the amount of aseismic deformation. Most of the scalar seismic moment in Yellowstone is released north of the caldera, while most geodetic moment is released in the Hebgen Lake fault zone or caldera. The data show that the Hebgen Lake fault and Yellowstone caldera are undergoing primarily aseismic deformation. In the case of the Hebgen Lake faulty, this is probably the result of the regional extensional stress combined with viscoelastic effects following the 1959 earthquake. For the caldera, deformation is likely due to magmatic and hydrothermal sources. The high seismicity and deformation rates of the Yellowstone-Hebgen Lake region are contrasted with the seismically quiescent eastern Snake River Plain, where strain rates are an order of magnitude less than the Hebgen Lake fault zone or Yellowstone caldera. The Snake River Plain is part of the eastern Basin and Range, and the extension data are consistent with sllip directions and extension rates inferred for large, north and south of the plain. This suggests that Basin-Range extension probably controls Snake River Plain deformation, although the absence of surface faulting and historic earthquakes indicates that seismic slip is not the mechanism by which extension is accommodated.
Book Synopsis Timing and Development of the Heise Volcanic Field, Snake River Plain, Idaho, Western USA by : Lisa A. Morgan
Download or read book Timing and Development of the Heise Volcanic Field, Snake River Plain, Idaho, Western USA written by Lisa A. Morgan and published by . This book was released on 2005 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Snake River Plain (SRP) developed over the last 16 Ma as a bimodal volcanic province in response to the southwest movement of the North American plate over a fixed melting anomaly. Volcanism along the SRP is dominated by eruptions of explosive high-silica rhyolites and represents some of the largest eruptions known. Basaltic eruptions represent the final stages of volcanism, forming a thin cap above voluminous rhyolitic deposits. Volcanism progressed, generally from west to east, along the plain episodically in successive volcanic fields comprised of nested caldera complexes with major caldera-forming eruptions within a particular field separated by ca. 0.5-1 Ma, similar to, and in continuation with, the present-day Yellowstone Plateau volcanic field. Passage of the North American plate over the melting anomaly at a particular point in time and space was accompanied by uplift, regional tectonism, massive explosive eruptions, and caldera subsidence, and followed by basaltic volcanism and general subsidence. The Heise volcanic field in the eastern SRP, Idaho, represents an adjacent and slightly older field immediately to the southwest of the Yellowstone Plateau volcanic field. Five large-volume (>0.5 km3) rhyolitic ignimbrites constitute a time-stratigraphic framework of late Miocene to early Pliocene volcanism for the study region. Field relations and high-precision 40Ar/39Ar age determinations establish that four of these regional ignimbrites were erupted from the Heise volcanic field and form the framework of the Heise Group. These are the Blacktail Creek Tuff (6.62 ± 0.03 Ma), Walcott Tuff (6.27 ± 0.04 Ma), Conant Creek Tuff (5.51 ± 0.13 Ma), and Kilgore Tuff (4.45 ± 0.05 Ma; all errors reported at ± 2s). The fifth widespread ignimbrite in the region is the Arbon Valley Tuff Member of the Starlight Formation (10.21 ± 0.03 Ma), which erupted from a caldera source outside of the Heise volcanic field. These results establish the Conant Creek Tuff as a distinct and widespread ignimbrite in the Heise volcanic field, eliminating former confusion resulting from previous discordant K/Ar and fission-track dates. New 40Ar/39Ar determinations, when combined with geochemical, lithologic, geophysical, and field data, define the volcanic and tectonic history of the Heise volcanic field and surrounding areas. Volcanic units erupted from the Heise volcanic field also provide temporal control for tectonic events associated with late Cenozoic extension in the Snake Range and with uplift of the Teton Range, Wyoming. In the Snake Range, movement of large (=0.10 km3) slide blocks of Mississippian limestone exposed 50 km to the east of the Heise field occurred between 6.3 and 5.5 Ma and may have been catastrophically triggered by the caldera eruption of the 5.51 ± 0.13-Ma Conant Creek Tuff. This slide block movement of ~300 vertical meters indicates that the Snake Range had significant relief by at least 5.5 Ma. In Jackson Hole, the distribution of outflow facies of the 4.45 ± 0.05-Ma Kilgore Tuff related to eruption from the Kilgore caldera in the Heise volcanic field on the eastern SRP indicates that the northern Teton Range was not a significant topographic feature at this time. --Abstract.
Book Synopsis Essentials of Igneous and Metamorphic Petrology by : B. Ronald Frost
Download or read book Essentials of Igneous and Metamorphic Petrology written by B. Ronald Frost and published by Cambridge University Press. This book was released on 2014 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concise introductory textbook on the petrology of igneous and metamorphic rocks for one-semester courses. Topics are organized around the types of rocks to expect in tectonic environments, rather than around rock classifications. Application boxes engage students by showing how petrology connects to wider aspects of geology. Includes end-of-chapter exercises.
Book Synopsis The Quaternary and Pliocene Yellowstone Plateau Volcanic Field of Wyoming, Idaho, and Montana by : Robert L. Christiansen
Download or read book The Quaternary and Pliocene Yellowstone Plateau Volcanic Field of Wyoming, Idaho, and Montana written by Robert L. Christiansen and published by . This book was released on 2001 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Regional Geology of Eastern Idaho and Western Wyoming by : P. K. Link
Download or read book Regional Geology of Eastern Idaho and Western Wyoming written by P. K. Link and published by Geological Society of America. This book was released on 1992-01-01 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crustal Deformation of the Yellowstone-Snake River Plain Volcano-tectonic System by : Christine Maria Puskas
Download or read book Crustal Deformation of the Yellowstone-Snake River Plain Volcano-tectonic System written by Christine Maria Puskas and published by . This book was released on 2007 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Yellowstone-Snake River Plain tectonomagmatic province resulted from Late Tertiary volcanism in western North America, producing three large, caldera-forming eruptions at the Yellowstone Plateau in the last 2 Myr. To understand the kinematics and geodynamics of this volcanic system, the University of Utah conducted seven GPS campaigns at 140 sites between 1987 and 2003 and installed a network of 15 permanent stations. GPS deployments focused on the Yellowstone caldera, the Hebgen Lake and Teton faults, and the eastern Snake River Plain. The GPS data revealed periods of uplift and subsidence of the Yellowstone caldera at rates up to 15 mm/yr. From 1987 to 1995, the caldera subsided and contracted, implying volume loss. From 1995 to 2000, deformation shifted to inflation and extension northwest of the caldera. From 2000 to 2003, uplift continued to the northwest while caldera subsidence was renewed. The GPS observations also revealed extension across the Hebgen Lake fault and fault-normal contraction across the Teton fault. Deformation rates of the Yellowstone caldera and Hebgen Lake fault were converted to equivalent total moment rates, which exceeded historic seismic moment release and late Quaternary fault slip-derived moment release by an order of magnitude. The Yellowstone caldera deformation trends were superimposed on regional southwest extension of the Yellowstone Plateau at up to 4.3 ± 0.2 mm/yr, while the eastern Snake River Plain moved southwest as a slower rate at 2.1 ± 0.2 mm/yr. This southwest extension of the Yellowstone?Snake River Plain system merged into east-west extension of the Basin-Range province. --Abstract.
Book Synopsis Geological Survey Professional Paper by :
Download or read book Geological Survey Professional Paper written by and published by . This book was released on 1966 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geologic Field-trip Guide to the Volcanic and Hydrothermal Landscape of the Yellowstone Plateau by : Lisa A. Morgan
Download or read book Geologic Field-trip Guide to the Volcanic and Hydrothermal Landscape of the Yellowstone Plateau written by Lisa A. Morgan and published by Government Printing Office. This book was released on 2017 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crustal Structure and Tectono-magmatic Processes of the Yellowstone-Snake River Plain Volcanic System from Gravity-density and Lithospheric Strength Modeling with Seismic and Heat Flow Constraints by : Katrina Robb Settles
Download or read book Crustal Structure and Tectono-magmatic Processes of the Yellowstone-Snake River Plain Volcanic System from Gravity-density and Lithospheric Strength Modeling with Seismic and Heat Flow Constraints written by Katrina Robb Settles and published by . This book was released on 2007 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crustal Thickness and Vp/Vs Ratio of Yellowstone, Eastern Snake River Plain, Wyoming Province, and the Northern Basin and Range Province Through Receiver Function Analysis by : Avikant Dayma
Download or read book Crustal Thickness and Vp/Vs Ratio of Yellowstone, Eastern Snake River Plain, Wyoming Province, and the Northern Basin and Range Province Through Receiver Function Analysis written by Avikant Dayma and published by . This book was released on 2017 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: "For decades, numerous studies have been conducted and contradictory results were achieved about the origin and evolution of the Yellowstone supervolcano and the Eastern Snake River Plain. Whether the 640 km long time-progressive chain of rhyolitic calderas was formed due to mantle-plume or a result of lithospheric extension allowing the emergence of melt on the surface is still a debate. Using receiver function analyses, this study determines the crustal thickness and the Vp/Vs ratio below the Yellowstone Plateau, Wyoming Province (WP), Idaho Batholith (IB), Eastern Snake River Plain (ESRP), and the northern Basin and Range Province (BRP). The thickness is highest below the Wyoming Province (46 to 54 km) and reduces to as low as 30 km towards the east in the Batholith Province. The Yellowstone Caldera sits above the Moho not deeper than 44 km and the entire extension of the Eastern Snake River Plain varies in Moho depth from 44 km below the Island Park Caldera, 40 km below the Heise Caldera and shallows up to 37 km below the Picabo and Twin Fall Calderas. The thickness of the crust below ESRP does not show a noticeable variation from the BRP lying to the south and north of it. The receiver functions below the Yellowstone Plateau show a low-velocity zone at a shallow depth probably signifying the presence of a shallow magma chamber. Compressional velocity variations in the mantle show low-velocity anomaly of -9% till the depth of 280 km NW of the Yellowstone Plateau and a high-velocity region beneath it starting from 320 km. This study acknowledges both the controversial theories proposed for the explanation of the magmatic volcanic calderas"--Abstract, page iii.
