Southern hemisphere origin of the Cretaceous Laytonville Limestone of California
Science
By: J.A. Tarduno, M. McWilliams, W.V. Sliter, H. E. Cook, M.C. Blake Jr., and I. Premoli-Silva
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
New paleomagnetic, paleontologic, and stratigraphic data from outcrops of the Laytonville Limestone (101 to 88 million years old) support a Southern Hemisphere orgin. A paleomagnetic megaconglomerate test is statistically significant and suggests magnetization at 14?? ?? 5?? south, predating Late Cretaceous to Eocene (70 to 50 million years ago) accretion. Rapid Kula plate movement or the existence and demise of a now vanished oceanic plate (or both) are required to accommodate the greater than 50?? of poleward displacement implied by the paleomagnetic data. This rapid motion brings into question the validity of a "speed limit" for absolute plate velocity based on present-day plate motions.
Suggested Citation
Tarduno, J., McWilliams, M., Sliter, W., Cook, H.E., Blake, M., Premoli-Silva, I., 1986, Southern hemisphere origin of the Cretaceous Laytonville Limestone of California: Science, v. 231, no. 4744, p. 1425-1428, https://doi.org/10.1126/science.231.4744.1425.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Southern hemisphere origin of the Cretaceous Laytonville Limestone of California |
| Series title | Science |
| DOI | 10.1126/science.231.4744.1425 |
| Volume | 231 |
| Issue | 4744 |
| Year Published | 1986 |
| Language | English |
| Publisher | American Association for the Advancement of Science |
| Contributing office(s) | Geology, Minerals, Energy, and Geophysics Science Center |
| Description | 4 p. |
| First page | 1425 |
| Last page | 1428 |