THE NORTH BANDA SEA (EAST INDONESIA) - AN UPPER MIOCENE BACK-ARC BASIN

被引:0
|
作者
REHAULT, JP
MAURY, RC
BELLON, H
SARMILI, L
BURHANUDDIN, S
JORON, JL
COTTEN, J
MALOD, JA
机构
[1] UNIV BRETAGNE OCCIDENTALE,GDR 910 DOMAINE OCEAN,F-29285 BREST,FRANCE
[2] CENS,P SUE LAB,F-91191 GIF SUR YVETTE,FRANCE
来源
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1994年 / 318卷 / 07期
关键词
BANDA SEA; BACK-ARC BASIN; BASALTS FLOOR; DATATION; UPPER MIOCENE; INDONESIA;
D O I
暂无
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Pillow-lavas have been dredged from the deep basement of the North Banda Sea, during the French-Indonesian Geobandut cruise. They are transitional basalts and trachyandesites displaying negative niobium and tantalum anomalies similar to those of lavas from back-arc basins. Their K-40-Ar-40 whole rock isotopic ages are 9 and 6.9 Ma respectively. Despite a large subsidence anomaly, the deep ''oceanic'' basement engaged in subduction beneath Sulawesi Island is thus not a trapped piece of Indian Ocean but an Upper Miocene back-arc basin floor.
引用
收藏
页码:969 / 976
页数:8
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