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Structural cross section (A-A') of the Tarim basin. Sinian-Lower Paleozoic Unit (highly mature to post-mature marine carbonate sediments with thickness >9500m). Upper Paleozoic Unit (mature to highly mature clastic deposits with a maximum thickness of 4500m). Mesozoic-Cenozoic Unit (terrestrial clastic deposits up to thickness of 11,000m in thickness in the sedimentary center). (According to Chen et al., 2000.)