2016年3月
Submarine lava fields in French Polynesia
Marine Geology
- ,
- ,
- ,
- 巻
- 373
- 号
- 開始ページ
- 39
- 終了ページ
- 48
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.margeo.2016.01.002
- 出版者・発行元
- ELSEVIER SCIENCE BV
Shipboard multibeam survey is powerful tool to locate submarine volcanoes especially having small volume. Small submarine volcanoes may represent the initial stages of hotspot activity, but they may also form via litho spheric flexing, regional convection of the mantle, and the presence of fracture zones. Here we describe several volcanoes, flood lavas, and volcanic clusters in French Polynesia using data from archives of multibeam data. The clusters of small volcanoes are similar to petit-spots, and they are not considered to represent the initial stages of a hotspot as they are composed of both young and old edifices, and because the sites are located far from any known hotspot. These newly discovered submarine volcanoes are located in areas with low-velocity seismic shear waves at depths of 60 and 100 km. These lava fields will therefore facilitate geochemical mapping of the mantle in areas unrelated to hotspots, because these lavas may have developed from melts in the shallow mantle beneath French Polynesia. (C) 2016 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.margeo.2016.01.002
- ISSN : 0025-3227
- eISSN : 1872-6151
- ORCIDのPut Code : 81312435
- Web of Science ID : WOS:000371364700004