Economic and Environmental Geology

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Fig. 4.

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Fig. 4. Lithological photographs, polarizing microscopic images, and X-ray powder diffraction patterns for host rock of dinosaur track site in the study area. (A) Occurrence of siltstone. (B) Occurrence of mudstone. (C, D) X-ray powder diffraction patterns. Bt; biotite, Ch; chlorite, Hb; amphibole, Px; pyroxene, Q; quartz, Pl; plagioclase, K; alkali feldspar.
Econ. Environ. Geol. 2021;54:311-30
© 2021 Econ. Environ. Geol.