Northern Lau Basin: Backarc extension at the leading edge of the Indo-Australian Plate
| Autor: | L. M. Parson, D. L. Tiffin |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
geography
geography.geographical_feature_category Lau Basin Triple junction Environmental Science (miscellaneous) Structural basin Geotechnical Engineering and Engineering Geology Oceanography Socle Paleontology Basement (geology) Ridge Magmatism Earth and Planetary Sciences (miscellaneous) Accretion (geology) Geomorphology Geology |
| Zdroj: | Geo-Marine Letters. 13:107-115 |
| ISSN: | 1432-1157 0276-0460 |
| DOI: | 10.1007/bf01204552 |
| Popis: | GLORIA imagery of the Lau Basin north of 17°S shows several morphotectonic terrains: a basement ridge and sedimented inter-ridge area in the SE; a nascent triple junction in the NE; a deeply sedimented basinal terrain in the central area; a linear neovolcanic zone striking NNESSW in the NW; and the northern flank of a leaky transform, the Peggy Ridge. Extension is now being accommodated at two main areas of spreading, but as no site of persistent long-term backarc crustal accretion is evident in this 250-km-wide portion of the basin, we conclude that past extension was largely by formation of pull-apart basins and local magmatism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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