Observations en bathyscaphe de formations volcano-sédimentaires aux environs de Madère |
| |
| Authors: | Gilbert Bellaiche Jean-Louis Cheminee |
| |
| Institution: | 1. Centre National de la Recherche Scientifique, Laboratoire de Géodynamique sous-marine, Station marine de Villefranche-sur-Mer France;2. Centre National de la Recherche Scientifique, Laboratoire de Géologie dynamique, Université Pierre et Marie Curie, Paris France |
| |
| Abstract: | Bathyscaph dives off Madeira permitted discovering at a depth of about 1200 m, a morphologic feature interpreted as a volcanic crater or a small caldera. Between 900 m and 1700 m deep, volcano-sedimentary formations, interpreted as hyaloclastites of explosive origin, were observed. It is assumed that these formations were initially deposited at shallower depths and may reflect the subsidence of the Madeira archipelago owing to the great thickness of its volcano-sedimentary series (more than 6000 m). |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
