(a) Global paleogeographic setting during the Toarcian showing the location of the Qiangtang terrane (modified from Ron Blakey, http://jan.ucc.nau.edu/~rcb7/globaltext2.html). (b) Toarcian (Early Jurassic) paleogeographic map in the Qiangtang Basin showing various sedimentary environments for our study sections. (IMAGE)

Science China Press

(a) Global paleogeographic setting during the Toarcian showing the location of the Qiangtang terrane (modified from Ron Blakey, http://jan.ucc.nau.edu/~rcb7/globaltext2.html). (b) Toarcian (Early Jurassic) paleogeographic map in the Qiangtang Basin showing various sedimentary environments for our study sections.

Caption

1. Alluvia fans; 2. River-delta facies; 3. Lakeshore facies; 4. Near-shore lacustrine; 5. Tidal facies; 6. Lagoon; 7. Shelf facies; 8. Reef; 9. Erosion area, 10. Provenance; 11. Fault. (c) Stratigraphic correlation of the Toarcian in the Southern Qiangtang Depression. (d) Comparison between the δ13C data from Peniche, Portugal, Sancerre-couy, France, Sakuraguchi-dani, Japan, and Sewa, China. (e) Comparison between the δ13C data from the Bilong Co, Nianduo, Wölong, and Sewa in the eastern Tethys.

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