Paleomagnetic and Ar-40/Ar-39 evidence for remagnetization of mesozoic oceanic rocks on the Vizcaino Peninsula, Baja California Sur, Mexico

Details Paleomagnetic and Ar-40/Ar-39 evidence for remagnetization of mesozoic oceanic rocks on the Vizcaino Peninsula, Baja California Sur, Mexico Paleomagnetic and Ar-40/Ar-39 evidence for remagnetization of mesozoic oceanic rocks on the Vizcaino Peninsula, Baja California Sur, Mexico

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.1831h&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 17, p. 1831-1834.

Physics

5

Argon Isotopes, Mesozoic Era, Ocean Bottom, Paleomagnetism, Sedimentary Rocks, Magnetization, Mexico

Scientific paper

Previously published palcomagnetic data for Upper Jurassic pillow lavas of the Vizcaino Peninsula indicate that they were deposited near a paleolatitude of 14N or S. Whether or not this result implies northward transport with respect to the continental interior has been controversial due to the lack of reliable Jurassic reference poles for the North American plate. Available paleomagnetic data for nearby Upper Triassic pillow basalts and overlying pelagic sediments at Punta San Hip61ito, however, fail a fold test indicating that these rocks were remagnetized post-folding. Indistinguishable in situ paleomagnetic directions and perturbed 4oAff39Ar age spectra for the Triassic and Jurassic pillow lavas are consistent with resetting of their magnetic and isotopic systems in the middle Cretaceous, probably during burial by the overlap Valle Formation (>10 km thick). Resetting apparently occurred post-deformation so the paleolatitude of renaagnetization is unknown. High-coercivity directions from a few samples of the Triassic rocks might represent an older magnetization acquired during deposition at palcolatitudes near 6N or S.

Affiliated with

Also associated with

No associations

Rating

Paleomagnetic and Ar-40/Ar-39 evidence for remagnetization of mesozoic oceanic rocks on the Vizcaino Peninsula, Baja California Sur, Mexico does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Paleomagnetic and Ar-40/Ar-39 evidence for remagnetization of mesozoic oceanic rocks on the Vizcaino Peninsula, Baja California Sur, Mexico, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Paleomagnetic and Ar-40/Ar-39 evidence for remagnetization of mesozoic oceanic rocks on the Vizcaino Peninsula, Baja California Sur, Mexico will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1562666