Paleomagnetism of the Lower Triassic Moenkopi Formation

Abstract

Research Article| March 01, 1974 Paleomagnetism of the Lower Triassic Moenkopi Formation C. E. HELSLEY; C. E. HELSLEY 1Institute for Geological Sciences, University of Texas at Dallas, P.O. Box 30365, Dallas, Texas 75230 Search for other works by this author on: GSW Google Scholar M. B. STEINER M. B. STEINER 1Institute for Geological Sciences, University of Texas at Dallas, P.O. Box 30365, Dallas, Texas 75230 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1974) 85 (3): 457–464. https://doi.org/10.1130/0016-7606(1974)85<457:POTLTM>2.0.CO;2 Article history first online: 01 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 C. E. HELSLEY, M. B. STEINER; Paleomagnetism of the Lower Triassic Moenkopi Formation. GSA Bulletin 1974;; 85 (3): 457–464. doi: https://doi.org/10.1130/0016-7606(1974)85<457:POTLTM>2.0.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 SocietyGSA Bulletin Search Advanced Search Abstract Paleomagnetic studies on the upper half of the Moenkopi Formation have identified three reversed and three normal polarity zones; this brings the total number of polarity zones observed in this formation to ten. The variable thickness and presumed duration of these polarity zones when combined with smaller variations internal to individual polarity zones suggest that this reversal sequence should be very useful as a regional correlation tool.Several zones of anomalous magnetization have been recognized within the formation. These anomalous zones constitute less than 5 percent of the total sample population but are very important, because they may assist in the recognition of individual polarity zones.The pole position derived from this study is at 103° E., 55° N. (dp 1.6°, dm 3.2°) and, due to the large number of samples and the length of time represented, probably represents an excellent average for the Lower Triassic of North America. 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.

Keywords

Affiliated Institutions

• The University of Texas at Dallas US

Related Publications