Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 24, 1976 | public
Journal Article

Yellowstone: Seismic Evidence for a Chemical Mantle Plume

Abstract

Arrivals of P waves from a recent event at the Nevada Test Site, recorded at a distance of 15.3°, passed beneath the Yellowstone caldera at depths of 200 and 400 kilometers. The travel time anomalies are modeled by a vertical cylindrical structure with a high-velocity core and a low-velocity collar as compared with the more normal mantle. The velocity structure and vertical extent of this feature are consistent with a chemical mantle plume beneath the Yellowstone caldera.

Additional Information

© 1976 American Association for the Advancement of Science. Received 29 March 1976. We thank R. S. Hart for assistance in the preparation for the fieldwork and H. M. Iyer for encouragement and useful discussions on the current Yellowstone P delay project. This research was supported by U.S. Geological Survey contract 14-08-0001-15250. Contribution No. 2733, Division of Geological and Planetary Sciences, California Institute of Technology.

Additional details

Created:
August 19, 2023
Modified:
October 25, 2023