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. doi:10.1126/science.277.5332.1642. 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.
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| 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. | |||||||||
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| Issue or Number: | 5332 | |||||||||
| DOI: | 10.1126/science.277.5332.1642 | |||||||||
| 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: | 09 Nov 2021 23:23 |
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