海洋鑽探計畫─(子計畫八)臺灣東北部海陸域地質構造綜合研究
Other Title
Structural Analysis of Onshore and Offshore Northeast Taiwan (II)
Date Issued
1999
Date
1999
Author(s)
DOI
882611M002027ODP
Abstract
Based on the seismic reflection profiles
collected between offshore northeast Taiwan and
south Okinawa Trough, 3 structural regions are
recognized, namely the East China Sea Shelf in
the northwest (ECSS), Okinawa Trough in the
southeast (OT), and Taiwan-Sinzi Folded Zone (TSFZ). ECSS is dominated by Paleogene NE-SW
normal faults and associated half-graben basins.
OT is dominated by NE-SW noraml faults and
associated grabens and horsts having been
activating since late Pliocene. TSFZ is
dominated by Pliocene-Quaternary NE-SW normal faults reacitvated from Neogene reverse
faults. The geological structures in TSFZ can be
traced southwards to the fold-and-thrust belt in
onshore Taiwan, and southeastwards to rifting
basins in the Okinawa Trough.
It is found that the studied onshore and
offshore northeast Taiwan is subjected to
undergoing extensional tectonism associated
with the Ryukyu Arc system.
Subjects
Tectonics
Structural Geology
Reflection Seismics
Northeast Taiwan
Ryukyu
Publisher
臺北市：國立臺灣大學地質科學系暨研究所
Type
report
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