Geoscience Reference
In-Depth Information
Figure 10.17.
(a) The
scheme of subduction
zones, thrusts, large faults
and Cenozoic extension in
eastern Asia. Heavy lines,
major plate boundaries of
faults. White arrows,
motion of Indian and the
two major extruded
blocks (China and
Indochina) with respect to
the Siberian block. Black
arrows, direction of
extension. In (b)-(d) are
shown plan views of three
successive stages in the
indentation by a rigid
indenter (India) into a
striped block of plasticine
(Asia). The plasticine was
confined on only the
left-hand side, leaving the
right-hand side
representing China and
Indochina to deform
freely. The resulting
extrusion (d) of two large
blocks to the right and the
faulting and rifting ahead
of the indenter are similar
to the large-scale
deformation, shown in
(a). (After Tapponier
et al
.
(1982).)
(a)
Cenozoic extension
Oceanic crust
of South China Sea
and Andaman Sea
60
°
N
SIBERIA
Baikal
Rift
20
°
N
40
°
N
20
°
N
INDIA
0
°
Borneo
0
°
80
°
E
100
°
E
(b)
(b)
(c)
(d)
