In the northwestern part of the transect, amphibolite, biotite schist
and marble are the major lithologies. The central to eastern part of the
transect is characterized by staurolite gneiss, garnet–staurolite gneiss
and garnet–kyanite–staurolite gneiss. The metamorphic rocks have a
marked foliation, which strikes parallel to the Karakoram fault
(Fig. 2a). The garnet–kyanite–staurolite gneiss occurs as rare thin
layers intercalated with kyanite-free garnet-bearing gneisses. The
garnet–kyanite–staurolite gneisses studied were collected from the
core of the Pangong complex (Fig. 2b). Leucogranite sheets and
dikes (Fig. 2c) intrude the metamorphic rocks in the Tangtse area.
Most leucogranites have a prominent foliation that strikes parallel
to that of the metamorphic rocks. Leucogranites also occur as a complex
network of dikes in the boundary area between granulite and
amphibolite. Younger undeformed leucogranite dikes cut the mylonitic
leucogranites (Fig. 2d).