TY  - STD
AU  - Sibuet J.C., Hsu S. K. Debayle E.
PY  - 2004//
TI  - Geodynamic context of the Taiwan orogen
T2  - AGU monograph.
BT  - Geophysical Monograph Series
SP  - 127
EP  - 158
VL  - 149
KW  - Cenozoic
KW  - Tertiary
KW  - upper Tertiary
KW  - Neogene
KW  - Phanerozoic
KW  - Mesozoic
KW  - West Pacific
KW  - Pacific Ocean
KW  - China
KW  - Asia
KW  - Far East
KW  - pH
KW  - direction
KW  - extremities
KW  - Thick plate
KW  - slabs
KW  - models
KW  - Wave velocity
KW  - S-waves
KW  - subsidence
KW  - subduction
KW  - shorelines
KW  - continental shelf
KW  - rifting
KW  - Timing
KW  - Miocene
KW  - Cretaceous
KW  - subduction zones
KW  - geodynamics
KW  - South China Sea
KW  - China Sea
KW  - Northern China
KW  - Japan
KW  - Taiwan
N2  - AGU Geophysical Monograph Series” 149, ''Continent-Ocean interactions within the East Asian Marginal Seas '', Edited by P. Cliff	Four independent arguments suggest that the Ryukyu subduction zone extended from Japan to southwest Taiwan (118°E) from the late Cretaceous to early Miocene (17-18 Ma): i) An analysis of the structure and timing of rifting in the basins of the East Asia continental shelf and west of Taiwan shows that they are located within four belts parallel to the mainland Chinese shoreline, which becomes younger oceanward since early Tertiary. Ridges with volcanic products are present between these belts. We interpret these basins and associated ridges as relict backarc basins and arcs of the Ryukyu subduction system. ii) Subsidence curves across west Taiwan Basins show that rifting ceased 17-18 Ma. iii) A new shear wave velocity model suggests that the Ryukyu slab extended in the past southwest of Taiwan, beneath the northern China Sea margin. iv) A deep seismic line shot across the north-eastern South China Sea margin also suggests that this margin was active in the past. We conclude that about 15-20 Ma, the southwestern extremity of the Ryukyu subduction zone jumped from 118°E (southwest of the Tainan Basin) to 126°E (where the present-day trend of the Ryukyu subduction zone changes direction). Since that time, the southwestern extremity of the Ryukyu subduction zone continuously moved westwards to its present-day location at 122°E. Since the beginning of formation of proto-Taiwan during late Miocene (9 Ma), the subducting PH Sea plate moved continuously through time in a N307° direction at 5.6 cm/yr with respect to EU, tearing the EU plate.
SN  - 0065-8448
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=2786), last updated on Fri, 24 Apr 2009 15:40:55 +0200
ID  - SibuetJ.C.2004
ER  -