SUMMARY
Geological
structure of the coastal and littoral areas in the
Ngô Thanh Thủy, Trần Trọng Thịnh,
Nguyễn Tài Thinh
The
characteristics of fault systems and geological structure of the coastal and littoral areas in the Sóc Trăng Province and adjacent
areas has been clarified by results of processing and interpretation of
integrated geophysical data combined with various resources data.
The
fault system is very complicated with 3 main directions: NE-SW, NW-SE and
sublongitudinal ones. The Sông Hậu fault is distributed unequally about
40 km in depth, consisting of 2 faults, which are parallel one with another,
and separated one from another about 10-15 km. Their direction is from NW-SE to
sublongitudinal with the dip changing from NE (in the coastal and littoral areas) to SW (in the
The
structural form, topography of pre-Cenozoic basement, and Cenozoic sediment
thickness have been clarified, among them, the Cenozoic sediment thickness in
the Trà Cú and Vĩnh Lợi subsided blocks reaches about >3200 m; in
the NW Côn Đảo Island subsided block – about 2000 m; and in the SW
Vĩnh Thạnh estuary it is relatively thin, with about 600-1000 m.
Ngày nhận bài: 5/10/2009.
Người biên tập: TS.
Đỗ Chiến Thắng
(Viện Địa
chất và Địa vật lý Biển).