Geological aspects of Banda Sea ecosystems and how they shape the oceanographical profile

International Symposium on Banda Sea Ecosystem 2017

地球科学;生态环境科学

Pownall, J.M.^1 ; Hall, R.^2 ; Lister, G.S.^1 ; Trihatmojo, A.^3

Research School of Earth Sciences, Australian National University, Canberra

ACT

2601, Australia^1

SE Asia Research Group, Department of Earth Sciences, Royal Holloway University of London, Egham

TW20 0EX, United Kingdom^2

Fakultas Ilmu Dan Teknologi Kebumian, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung

40132, Indonesia^3

关键词: Australia;    Biogeographic regions;    Collision zone;    Continental crusts;    Continental margin;    Lithospheric extension;    Oceanic basin;    SE Asia;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/184/1/012005/pdf
DOI  :  10.1088/1755-1315/184/1/012005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Banda Sea is a collage of young oceanic basins and fragmented Australian continental crust located at the heart of the Australia-SE Asia collision zone where Australian and Asian biogeographic regions converge. The formation of the sea was governed by the southeastward rollback of the Banda Slab since c. 16 Ma, which in its wake opened new oceanic basins and extended and fragmented Australian crust. These Australian crustal fragments are today either stranded within the Banda Sea where they form the prominent submarine 'Banda Ridges', or now reside as thrust-sheets on the NW Australian shelf after being transported all the way to the southern Banda Arc. The deepest part of the Banda Sea, the 7.2 km Weber Deep, was formed by extreme lithospheric extension that occured in the latter stages of Banda Slab rollback. This extension was accommodated by the vast low-angle 'Banda Detachment', which operated above the subducted fringes of the Australian continental margin.