The thermal regime of a postulated descending lithospheric slab
is calculated. The gravity anomaly associated with such a structure
is large in amplitude and long in wavelengh. Observed free-air
gravity anomalies in the Pacific Northwest do not indicate a gravitational
effect due to a descending slab.
Two hypothetical compensation models proposed may mask the
effects of the slab. However, a more complex form of compensation
seems required.
Extraction of long wavelength signals from the gravity record
using matched filters is demonstrated. Caution in the interpretation
of potential field records by this class of filters is recommended. / Graduation date: 1975
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28551 |
| Date | 09 August 1974 |
| Creators | MacFarlane, William Thomas |
| Contributors | Couch, Richard W. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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