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Measurements of the Cretaceous Paleolatitude of Vancouver Island: Consistent with the Baja-British Columbia Hypothesis

Ward, Peter D. and Hurtado, José M. and Kirschvink, Joseph L. and Verosub, Kenneth L. (1997) Measurements of the Cretaceous Paleolatitude of Vancouver Island: Consistent with the Baja-British Columbia Hypothesis. Science, 277 (5332). pp. 1642-1645. ISSN 0036-8075. https://resolver.caltech.edu/CaltechAUTHORS:20130129-101118260

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Abstract

A previously unsampled outcrop of gently dipping or flat-lying Upper Cretaceous sedimentary strata in the Vancouver Island region, which contains unaltered aragonitic mollusk fossils, yielded a stable remanent magnetization that is biostratigraphically consistent with Cretaceous magnetochrons 33R, 33N, and 32R. These results, characterized by shallow inclinations, indicate an Upper Cretaceous paleolatitude of about 25 ± 3 degrees north, which is equivalent to that of modern-day Baja California. These findings are consistent with the Baja–British Columbia hypothesis, which puts the Insular Superterrane well south of the Oregon-California border in the Late Cretaceous.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.277.5332.1642 DOIUNSPECIFIED
http://www.sciencemag.org/content/277/5332/1642PublisherUNSPECIFIED
ORCID:
AuthorORCID
Kirschvink, Joseph L.0000-0001-9486-6689
Additional Information:© 1997 American Association for the Advancement of Science. Received 2 May 1997; accepted 25 July 1997. We thank D.S. Cowan and R. T. Merril or reviewing the manuscript; J. Haggart, R. Enkin, and L. T. Silver for advice; L. Saul of the Los Angeles County Museum for guidance about California stratigraphy; and R. Lohman for assistance in running samples. Supported by NSF grants EAR-9372157 and EAR-9418283.
Funders:
Funding AgencyGrant Number
NSFEAR-9372157
NSFEAR-9418283
Issue or Number:5332
Record Number:CaltechAUTHORS:20130129-101118260
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130129-101118260
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36641
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 Jan 2013 16:26
Last Modified:03 Mar 2020 13:01

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