A tectonic facies investigation carried out in the West Kunlun, China allow
s us to have worked out a tectonic model of orogen. The tectonic facies, fr
om the north to the south, are composed of the following: 1. Southern Tarim
tectonic realm; 2, North Kudi magmatic are; 3. Kudi melange; 4. Kudi micro
-continent; 5, main shear zone; 6. Xianan Bridge calc alkaiine complex; 7.
Mazar-Kangxiwar melange-accretion complex; and 8. Tianshuihai fore[and fold
-thrust belt, The tectonic facies 1 -->5 recorded the history of the northw
ard subduction of the Prototethys and southward accretion of Eurasia in the
Late Proterozoic-Early Paleozoic time, while the tectonic facies 6 -->8 re
corded the history of the northward subduction of the Paleotethys and south
ward accretion of Eurasia in the Late Paleozoic-Early Mesozoic time, that o
f the tectonic evolution of the passive margin of the Qiangtang block, and
that of the docking and the final amalgamation of the Qiangtang block to th
e Eurasian continent. The tectonic facies investigation has indicated that
a complicated archipelago-accretion orogenesis took place in the West Kunlu
n orogen, which was the important character of southward growth of the Eura
sian continent.