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Lake Karakul
The Lake Karakul area
(Fig. 3.3) is dominated by an
east-west trending belt of
undeformed granodiorites
and monzonites-granites.
The granitoids intruded into
Carboniferous to Permian
metaclastic and metavolcanic
rocks, locally
accompanied by gabbroic
intrusives. The granite
samples are either two-mica
granites (P20) or biotite
granites (P22, P24, P25 and
P26) with zoned plagioclase,
K-feldspars and in some
samples epidote.
Central Pamirs (CP) and
Rushan Pshart Zone (RPZ)
The basement of the
Central Pamirs consists of
highly deformed, middle to
high grade metamorphic
rocks, interpreted to
constitute another Precambrian-Palaeozoic
continental
fragment that collided with
Asia probably in the Permian
(Burtman & Molnar 1993).
The central and eastern part
of the Central Pamirs are
structurally occupied by the
Muzkol- and Sares domes,
which are interpreted as Precambrian antiforms by Russian geologists. Most parts of
the antiforms consist of monotonous biotite-gneisses and amphibolites, which are
intruded along their southern margin by small bodies of gabbroic and dioritic rocks.
The basement is structurally overlain by metamorphosed and deformed Palaeozoic
siliciclastic and Triassic to Jurassic platform-type clastic and carbonate rocks. Based
on previous studies (e.g., Ratschbacher et al. 1996, 1997; Ratschbacher & Schwab 1999,
Schwab et al. 1997) and new data it is concluded, that the domes are a Tertiary feature.
In the Central Pamirs and the Rushan Pshart zone, magma series of different ages and
types are widely distributed (Fig. 3.3). The following samples were examined: