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Friday, July 10, 2020 | History

2 edition of Structural and paleomagnetic analysis of eastern Umtanum Ridge, south-central Washington found in the catalog.

Structural and paleomagnetic analysis of eastern Umtanum Ridge, south-central Washington

Andrew T. Barsotti

Structural and paleomagnetic analysis of eastern Umtanum Ridge, south-central Washington

by Andrew T. Barsotti

  • 266 Want to read
  • 26 Currently reading

Published .
Written in English

    Subjects:
  • Paleomagnetism -- Washington (State),
  • Rocks -- Magnetic properties.,
  • Geology, Structural.

  • Edition Notes

    Statementby Andrew T. Barsotti.
    The Physical Object
    Paginationxiv, 204 leaves, bound :
    Number of Pages204
    ID Numbers
    Open LibraryOL16587455M

      The paper presents the results of paleomagnetic and geochronological studies on the Lower Cretaceous sandstones of the Silasa and Kema Formations (Kiselevka-Manoma and Kema terranes, respectively). Source areas of rocks are determined and .   Marine formations of the Yeonil Group outcropping in the Yeonil Basin are deposited on the Eocene Volcanic Rocks and the Yangbuk Group. Byun ()provided a biostratigraphy based on dinoflagellate cysts from seven oil-exploration cores ( to m depth from top to basement rocks), and distinguished four zones: a barren zone (– Ma), a Distatodinium craterum zone (17– .

    structure, stratigraphy and hydrogeology will be briefly discussed in this chapter. PHYSIOGRAPHY AND TOPOGRAPHY Pennsylvania’s Anthracite Region is located in the Valley and Ridge Province of the Appalachian Mountains as shown on Figure The Valley and Ridge Province and other. This paper includes paleomagnetic results from a reconnaissance study of Jurassic sedimentary rocks of the Suplee-Izee area (Dickinson and Vigrass, ) of the Blue Mountains in east-central Suplee-Izee area was investigated by Bill Dickinson as part of his Ph.D. work, and the published results are one of the earliest examples of the many research contributions he made over the.

      PALEOMAGNETISM OF PERMIAN ROCKS FROM TANZANIA AND THE PERMIAN PALEOGEOGRAPHY OF PANGEA Hankel [19], Kreuser and Semkiwa [20], Casshyap et al. [21], Kreuser et al. [22,23], and Dypvik et al. [24]. For paleomagnetic analysis oriented cores were collected from 14 sites in the Mikumi, Nyakatitu, and Songwe-Kiwira Basins (Fig. 1) during July, (principal component analysis) technique (Krichvink, ). It is important to identify the major magnetic signal carrier for any paleomagnetic study. The unaltered sediments from the Cagayan Ridge are likely to have magnetite as the major magnetic mineral, and detrital remanent magnetization (DRM) should be the main mechanism for the remanent.


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Structural and paleomagnetic analysis of eastern Umtanum Ridge, south-central Washington by Andrew T. Barsotti Download PDF EPUB FB2

Umtanum Ridge is one of the best-exposed Yakima ridges formed by folded basalt flows in south-central Washington. An analysis was made of the structural geometry and strain distribution in the deformed basalt layers exposed on the ridge at Priest Rapids Dam.

@article{osti_, title = {Late Cenozoic structure and stratigraphy of south-central Washington}, author = {Reidel, S P and Washington State Univ., Pullman, WA and Campbell, N P and Fecht, K R and Lindsey, K A}, abstractNote = {The structural framework of the Columbia Basin began developing before Columbia River Basalt Group (CRBG) volcanism.

This complex structural–remagnetization history and consequent loss of paleohorizontal prevent a simple analysis of paleolatitude during remagnetization. However, analysis of the youngest layered rocks of the Goat Peak syncline indicates that much of the Structural and paleomagnetic analysis of eastern Umtanum Ridge occurred when the structure was more open but still well by: Structural analysis shows the differential rotations postdate middle Eocene folding of the Crescent Formation against the continental margin and predate the unconformably overlying upper Eocene Goble Volcanics, which are rotated about 23° and do not show the same domains of rotation as the underlying Crescent by: A structural and paleomagnetic study of a section through the eastern Subbetic, Southern Spain Article (PDF Available) in Journal of the Geological Society (4) August with 58 Reads.

The eastern flank of the Cascade Range in Washington has a wide variety of rock types, structural relations, and scenic views. The geology is better exposed on the eastern flank of the range; the western flank and the Puget Lowland have more extensive and. Excavation of two trenches across a prominent scarp at the base of Umtanum Ridge uncovered evidence for bending moment faulting possibly caused by a blind thrust.

Using aeromagnetic, gravity, and paleoseismic evidence, we postulate possible tectonic connections between the YFTB in eastern Washington and active faults of the Puget Lowland. The basalt stratigraphy and geologic structures of eastern Umtanum Ridge have been mapped and studied in detail to help assess the feasibility of nuclear waste terminal storage on the Hanford Site.

This book is intended to teach the interested Earth scientist (student or otherwise) how paleomagnetism works. An introduction to the fundamental principles of paleomagnetism is provided along with examples of tectonic and geochrono-logic applications.

Emphasis is placed on providing a firm foundation in the basics of the paleomagnetic. In this work, we acquire a continuous record of relative rock uplift rates and assess rates and magnitudes of long‐term deformation along the three major structures of the Yakima Canyon: the Manastash Ridge, Umtanum Ridge, and Selah Butte anticlines (Figure 1).In our geomorphic analyses, we exploit the availability of high‐resolution LiDAR data and existing ages of strath terraces in the.

Prominent folds and faults throughout the backarc regions of central and eastern Washington testify to long-term deformation most prominently displayed in the Yakima fold and thrust belt (YFTB) of south-central Washington ().Folds and faults of the YFTB fan westward into the Cascade Range and likely continue into populated regions of the Puget Lowland and Willamette Valley (e.g.

This field trip guide covers a two-day trip to examine the characteristics of Columbia River Basalt Group flows and the Yakima fold belt. This field trip focuses on the main physi. Umtanum Ridge in south-central Washington is the topographic expression of a complex anticline within the Yakima Fold system in the Miocene Columbia River Basalt Group.

The Yakima Fold system, which is partly contained within the Hanford Site, is an example of a layered basalt sequence folded near the surface of the earth. Umtanum Ridge is one of the best-exposed Yakima ridges formed by folded basalt flows in south-central Washington.

An analysis was made of the structural geometry and strain distribution in the. Samples for paleomagnetic analysis were collected from Sentinel Gap and Umtanum Ridge, which are separated by only 25 km and contain two flows thought to be the same on geological grounds. Andrew T. Barsotti has written: 'Structural and paleomagnetic analysis of eastern Umtanum Ridge, south-central Washington' -- subject(s): Geology, Structural, Magnetic properties, Paleomagnetism.

The Umtanum Ridge, Manastash Ridge, Ainsley Canyon Naneum Ridge, and Eagle Creek anticlines and the Kittitas Valley syncline are northwesterly trending folds. These folds plunge to the southeast because they were tilted by the rise of the Cascade Range anticline to the west.

Mapping of Quaternary sedimentary rocks and Miocene basalts on Toppenish Ridge, a fold in south-central Washington, reveals a km-long zone of nearly surface ruptures. Paleomagnetic and Structural Analysis of the Wallowa Terrane, Northeastern Oregon and West-Central Idaho: A Réévaluation of the Salmon River Suture Directors: Steven D.

Sheriff and James W. Sears Paleomagnetic evidence indicates that many Cordilleran terranes have experienced significant clockwise rotation since the Cretaceous. The rotation. A Structural and Paleomagnetic Analysis of the Basalts of Summit Creek Anne Fetrow* and Professor Mike Valentine University of Puget Sound Tacoma, WA [email protected] Abstract Geologic Setting This study is a detailed analysis of the structural geology and paleomagnetism of.

Paleomagnetic and GPS data indicate that Washington and Oregon have rotated clockwise for the past 16 Myr. Late Cenozoic and Quaternary fault geometries, seismicity lineaments, and focal mechanisms provide evidence that this rotation is accommodated by north directed thrusting and right‐lateral strike‐slip faulting in Washington, and SW to W directed normal faulting and right‐lateral.

In the present study, petrographic, geochemical and paleomagnetic investigations are carried out on two volcanic occurrences from southern Sinai ().The first occurrence is an olivine basaltic intrusion at Wadi Budra, southeast Abu Zeniema, which was dated as Middle Jurassic (±7 Ma; Meneisy,Saleeb Raufail et al., ).The second is in Sahl el Raha area from the Sant .Preliminary geology of eastern Umtanum Ridge, South-Central Washington Technical Report Goff, F.

E. The basalt stratigraphy and geologic structures of eastern Umtanum Ridge have been mapped and studied in detail to help assess the feasibility of nuclear waste terminal storage on the Hanford Site in southeastern Washington State.