Seismic explosion data obtained by the Dominion Observatory in the Vancouver Island region from 1953 to 1963 have been restudied by both the travel-time and the time-term methods. From the first method, a new four layer model crust was constructed: In addition to the sedimentary, a granitic, and basaltic layers, suggested by White (1962), an ultrabasic layer of more than 22 km in thickness and Vp = 7.1 km/sec was recognized. From the time-term method, this layer structure was supported and the possibility of a major structural feature running across the island is suggested by the faults on each side and the gravity anomaly extending between them.
The Mohorovicic discontinuity was not observed. A possibility interpretation of the abnormal character is given, and the complementary gravity and geomagnetic depth sounding evidence presented. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/36016 |
| Date | January 1968 |
| Creators | Tseng, Kuang-Hsing |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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