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Plume formation and lithosphere erosion - A comparison of laboratory and numerical experimentsThe mechanics of thermal plume formation and intrusion into the lithosphere are investigated using a combination of laboratory and numerical simulations. The sequence of events leading to lithospheric thinning and uplift by thermal plumes is established, and some numerical estimates of the time scales for each stage in this process are derived that are applicable to the mantle. It is demonstrated that the two-dimensional finite element computations successfully reproduce the qualitative features seen in the experiments, with a quantitative discrepancy of typically 30 percent or less. The results of some calculations on plume formation and intrusion into model lithospheres with a variety of rheologies are presented.
Document ID
19890035271
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Olson, Peter
(Johns Hopkins University Baltimore, MD, United States)
Schubert, Gerald
(California, University Los Angeles, United States)
Anderson, Charles
(Johns Hopkins Univ. Baltimore, MD, United States)
Goldman, Peggy
(Los Alamos National Laboratory NM, United States)
Date Acquired
August 14, 2013
Publication Date
December 10, 1988
Publication Information
Publication: Journal of Geophysical Research
Volume: 93
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
89A22642
Funding Number(s)
CONTRACT_GRANT: NAG5-152
CONTRACT_GRANT: NAGW-820
CONTRACT_GRANT: NSF EAR-85-79309
Distribution Limits
Public
Copyright
Other

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