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Age of Lower Jurassic Springdale Sandstone of Southwestern Utah from its Magnetic Polarity Sequence

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Języki publikacji
EN
Abstrakty
EN
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.
Czasopismo
Rocznik
Strony
23--30
Opis fizyczny
Bibliogr. 13 poz.
Twórcy
autor
  • Department of Geology and Geophysics, University of Wyoming, Laramie, Wyoming 82071, USA
Bibliografia
  • 1.Clemmensen L.B., Olsen H., Blakey R., 1989 — Erg margin deposits in the Lower Jurassic Moenave Formation and Wingate Sandstone, southern Utah. Geological Society of America Bulletin, 101: 759–773.
  • 2.Gradstein F.M., Ogg J.G., Schmidt M.D., Ogg G.M., 2012 — The Geologic Time Scale. Vol. 2. Elsevier BV, Amsterdam.
  • 3.Harshbarger J.W., Repenning C.a., Irwin J.H., 1957 —Stratigraphy of the uppermost Triassic and Jurassic rocks of the Navajo Country. United States Geological Survey Professional Paper, 291.
  • 4.Kirschvink J., 1980 — The least-squares line and plane and the analysis of palaeomagnetic data. Geophysical Journal, 62: 699–718.
  • 5.Lewis G.E., Irwin J.H., Wison R.F., 1961 — Age of the Glen Canyon Group, (Triassic and Jurassic) on the Colorado Plateau. Geological Society of America Bulletin, 72: 1437–1440.
  • 6.Lucas S.G., Tanner L.H., 2006 — The Springdale Member of the Kayenta Formation, Lower Jurassic of Utah-Arizona. New Mexico Museum of Natural History and Science Bulletin, 37: 71–76.
  • 7.Lucas S.G., Tanner L.H., 2014 — Unconformable contact of the Lower Jurassic Wingate and Kayenta Formations, Utah. Utah Geological Association Publication, 43 (in press).
  • 8.Mar zolf J.E., 1994 — Reconstruction of the Early Mesozoic cordillerian cratonal margin adjacent to the Colorado Plateau. In: Mesozoic systems of the Rocky Mountain Region, USA (eds M.V. Caputo et al.): 181–216. Rocky Mountain Section SEPM, Denver, Colorado.
  • 9.Peterson F., Pipiringos G.N., 1979 — Principal unconformities in Triassic and Jurassic rocks. United States Geological Survey Professional Paper, 1035A.
  • 10.STEINER M., 2014 — New magnetostratigraphy and paleopole from the Whitmore Point Member of the Moenave Formation at Kanab, Utah. Volumina Jurassica, 12, 2: 13–22 (this volume).
  • 11.Wilson R.F., 1967 — Whitmore Point, a new member of the Moenave Formation in Utah and Arizona. Plateau, 40: 29–40.
  • 12.Wilson R.F., 1974 — Mesozoic stratigraphy of northeastern Arizona. In: Geology of northern Arizona Part 1 (eds T.N. Karlstrom et al.): 192–207. Geological Society of America, Rocky Mountain Section, Denver.
  • 13.Yang Z., Moreau M.G., Bucher H., Dommergues J.L., Trouiller A., 1996 — Hettangian and Sinemurian magnetostratigraphy from the Paris Basin. Journal of Geophysical Research, 101: 8025–8042.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-67c3f940-312b-4eb5-b6c3-7b200a68e2b5
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