Age of Lower Jurassic Springdale Sandstone of southwestern Utah from its Magnetic Polarity Sequence
Journal Title: Volumina Jurassica - Year 2014, Vol 12, Issue 2
Abstract
The Springdale Sandstone records a large number of reversals of the geomagnetic field. Forty-three percent of the 60 m section investigated showed 25 polarity intervals. These frequent reversals follow the nearly constant normal polarity of the underlying Whitmore Point strata. Comparison of the reversal sequence of the Springdale Sandstone with a core from the Paris Basin suggests that the Springdale Sandstone spans an interval extending possibly from as early as late Hettangian to early-mid Sinemurian time. The paleomagnetic pole calculated from Springdale paleomagnetic directions is statistically identical to that of the underlying Whitmore Point Member of the Moenave Formation, and considerably different from that of the overlying Kayenta Formation. This similarity suggests that the Springdale Sandstone should be retained as a member of the Moenave Formation, not considered part of the Kayenta Formation.
Authors and Affiliations
Maureen STEINER
Keywords
Related Articles
- EP ID EP67981
- DOI 10.5604/17313708 .1130124
- Views 72
- Downloads 0
News and Reviews – Report of the German Subcommission on Jurassic Stratigraphy for 2009 to 2012
Obraz zmienności facjalnej utworów oolitowych dolnego kimerydu północno-wschodniego obrzeżenia Gór Świętokrzyskich w świetle szczegółowej interpretacji danych geofizyki wiertniczej i sejsmiki refleksyjnej – wyniki wstępne
Pliensbachian/Toarcian boundary: the proposed GSSP of Peniche (Portugal)
The Peniche section (Portugal) is cosidered as a potential stratotype (GSSP) for the Pliensbachian-Toarcian boundary and it is analysed on the background of the available data on the ammonite successions from other Tethy...
[b]The Oxfordian ammonite genus [i]Passendorferia [/i]Brochwicz-Lewiński and the Tethyan subfamily Passendorferiinae Meléndez: origin and palaeobiogeography[/b]
The Oxfordian ammonite group Passendorferiinae (known as “[i]Mediterranean perisphinctids[/i]”) formsa group of perisphinctids characterized by strongly evolute serpenticone coiling and subcircular to subquadrate whorl s...
News and Reviews – Gerd E.G. Westermann (11.05.1927–5.11.2014)