Mesozoic stratigraphic constraints on Laramide right slip on the east side of the Colorado Plateau

Abstract

Research Article| September 01, 1997 Mesozoic stratigraphic constraints on Laramide right slip on the east side of the Colorado Plateau Lee A. Woodward; Lee A. Woodward 1Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, New Mexico 87131 Search for other works by this author on: GSW Google Scholar Orin J. Anderson; Orin J. Anderson 2New Mexico Bureau of Mines and Mineral Resources, Socorro, New Mexico 87801 Search for other works by this author on: GSW Google Scholar Spencer G. Lucas Spencer G. Lucas 3New Mexico Museum of Natural History and Science, 1801 Mountain Road N.W., Albuquerque, New Mexico 87104 Search for other works by this author on: GSW Google Scholar Author and Article Information Lee A. Woodward 1Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, New Mexico 87131 Orin J. Anderson 2New Mexico Bureau of Mines and Mineral Resources, Socorro, New Mexico 87801 Spencer G. Lucas 3New Mexico Museum of Natural History and Science, 1801 Mountain Road N.W., Albuquerque, New Mexico 87104 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1997) 25 (9): 843–846. https://doi.org/10.1130/0091-7613(1997)025<0843:MSCOLR>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 MailTo Tools Icon Tools Get Permissions Search Site Citation Lee A. Woodward, Orin J. Anderson, Spencer G. Lucas; Mesozoic stratigraphic constraints on Laramide right slip on the east side of the Colorado Plateau. Geology 1997;; 25 (9): 843–846. doi: https://doi.org/10.1130/0091-7613(1997)025<0843:MSCOLR>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 Regional, eastward trending piercing lines defined by stratigraphic truncations and depositional pinchouts in Jurassic and Cretaceous strata in north-central New Mexico allow 5 to 20 km of right slip between the eastern margin of the Colorado Plateau and the craton to the east in Laramide (Late Cretaceous–Paleogene) and younger time. Estimates of 60–170 km of Laramide right slip by previous workers were based largely on (1) the amount of presumed crustal shortening across thrust and reverse faults in the Wyoming province north of the plateau or (2) offset of piercing lines defined by a Proterozoic, regionally subhorizontal, isobaric metamorphic surface that intersects preexisting structures and steep stratigraphic contacts. Major right slip inferred on the basis of these metamorphically defined piercing lines in Proterozoic rocks must therefore predate the Laramide orogeny and cannot be used to support a model postulating large-scale Laramide right slip. Restoration of 60–170 km of right slip creates lateral offset of the north-south extent of the Jurassic Todilto Formation, producing an untenable paleodepositional basin geometry. 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.