Structural development and major unconformities of the NAM Conson basin, offshore Vietnam /

accommodation space overlying the tilted fault blocks;

Bibliographic Details
Main Author: Gerke, Henry Joseph, 1965-
Format: Thesis eBook
Language:English
Published: [Place of publication not identified] : [publisher not identified] ; 1996.
Subjects:
Online Access:Link to OAKTrust copy
Description
Summary:accommodation space overlying the tilted fault blocks;
age given to the magnetic anomalies of the southwest subbasin
an intrusive, axial zone on strike with the southwest
and Pigott (1986), who concluded that the South China Sea
Basement (66.5 Ma), were identified and mapped within the Nam
basin initially opened in the southwest during the
by Taylor and Hayes (1980, 1983) and more recently by Briais
channelization of the transparent sequence followed by the
compression: deposition of a transparent sequence during a
Conson basin using 2700 km of migrated, multifold, seismic
Cretaceous. The two periods of NW-SE extension found in the
deposition of another sedimentary sequence. Apparent Miocene
et al. (1993). This study throws doubt on the model of Ru
extension produced additional extensive NE-SW striking normal
extrusion model proposed by Tapponnier et al. (1982, 1986).
extrusion of the Indochina microplate and synchronous, left
faulting, formation of half grabens, and the emplacement of
Identification of several additional unconformities in the
is an asymmetric, extensional basin. It formed as a result
lateral motion at the terminus of the Mekong fault caused the
Middle Miocene. This rapid southwest propagation was
movement and the Middle Miocene seanoor spreading of the
Nam Conson basin created by the Oligocene left-lateral fault
Nam Conson basin. In the Early Miocene, NW-SE seafloor
of Oligocene and then Middle Miocene, NW-SE extension. The
Oligocene extension that formed the initial structure of the
period of quiescence and thermal subsidence; and
probably due in part to a NE-SW zone of weakness caused by
propagated southwestward reaching the Nam Conson basin in the
reflection data. The results show that the Nam Conson basin
seismic data show how the Nam Conson basin developed after
southwest subbasin support some components of the collision
spreading in the South China Sea southwest subbasin rapidly
subbasin spreading center.These results confirm the Miocene
the Middle Miocene, through the subsequent infilling of
the Oligocene extension. The resulting, Middle Miocene
to Recent volcanoes were also identified along 1090 E.
Two major unconformities, Middle Miocene (15.5 Ma) and Top of
Item Description:"Major subject: Geophysics".
Vita.
Physical Description:xi, 47 leaves : illustrations, maps ; 28 cm.
Also available online.
Issued also on microfiche from Lange Micrographics.
Bibliography:Includes bibliographical references.