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Miocene crustal extension and uplift in southeastern Nevada: Constraints from fission track analysis

1991; Geological Society of America; Volume: 19; Issue: 10 Linguagem: Inglês

10.1130/0091-7613(1991)019 2.3.co;2

1943-2682

Paul G. Fitzgerald, Joan E. Fryxell, Brian P. Wernicke,

Geology and Paleoclimatology Research

Research Article| October 01, 1991 Miocene crustal extension and uplift in southeastern Nevada: Constraints from fission track analysis P. G. Fitzgerald; P. G. Fitzgerald 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 Search for other works by this author on: GSW Google Scholar J. E. Fryxell; J. E. Fryxell 2Department of Geological Sciences, California State University, San Bernardino, California 92407 Search for other works by this author on: GSW Google Scholar B. P. Wernicke B. P. Wernicke 3Department of Earth and Planetary Science, Harvard University, Cambridge, Massachusetts 02138 Search for other works by this author on: GSW Google Scholar Author and Article Information P. G. Fitzgerald 1Department of Geology, Arizona State University, Tempe, Arizona 85287-1404 J. E. Fryxell 2Department of Geological Sciences, California State University, San Bernardino, California 92407 B. P. Wernicke 3Department of Earth and Planetary Science, Harvard University, Cambridge, Massachusetts 02138 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1991) 19 (10): 1013–1016. https://doi.org/10.1130/0091-7613(1991)019 2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation P. G. Fitzgerald, J. E. Fryxell, B. P. Wernicke; Miocene crustal extension and uplift in southeastern Nevada: Constraints from fission track analysis. Geology 1991;; 19 (10): 1013–1016. doi: https://doi.org/10.1130/0091-7613(1991)019 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Gold Butte block of southeastern Nevada appears to be a cross section through the upper ∼17 km of Colorado Plateau crust, tilted eastward and tectonically denuded via top-to-the-west normal faulting in Tertiary time. The east side of the block exposes a steeply dipping cratonic Paleozoic section 2 to 3 km thick; Proterozoic basement to the west is continuously exposed for an apparent thickness of ∼15 km structurally below the basal Cambrian unconformity. Apatite fission track dating and confined track-length distributions have been used to determine the time of unroofing of the Gold Butte block and hence the timing of one episode of extension in this part of the Basin and Range province. Samples collected in an east-west transect along the block indicate an abrupt transition from a period of relative thermal and tectonic stability to the onset of rapid cooling. The fission-track data indicate that the unroofing of the Gold Butte block was rapid and that the crustal section was brought to within a few kilometres of the surface at ca. 15 Ma. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.