PERMIAN-TRIASSIC MICROBIALITES FROM HUNAN PROVINCE, SOUTH CHINA

This page currently authored by Steve Kershaw but further contributions may come from other authors


This page gives preliminary views of earliest Triassic microbialites at the Gaoya site in Hunan Province



CREDITS:

Photographs on this page  were taken in 2010 during fieldwork kindly hosted by Wang Yongbiao and colleagues. In particular, HE Lei and LIAO Wei organised the field visit. Thus photos here are temporary pending any replacements by better images.


Go to Microbialite  Atlas Contents PageGA3_Microb_Contents.html
Go to PTB map pageGA5_P-T_Boundary.htmlGA5_P-T_Boundary.htmlshapeimage_2_link_0
Go to S. China main pageGA9_S_China.htmlGA5_P-T_Boundary.htmlshapeimage_3_link_0

Photo below shows general view of site; base of microbialite is located approximately at the level of the arrow.

Photo below shows close-up view of contact between pre-extinction limestones and the layered microbialite.

Photo below shows close-up view of contact between pre-extinction limestones and the layered microbialite.

Photo below shows polished sample with contact between pre-extinction limestones and the layered microbialite (Arrow). The contact is a stylolite, and the nature of the transition is not determinable.

Photo below shows a layered portion of the microbialite. Note the difference between this appearance and the digitate microbialites in Sichuan/Chongqing areas in other pages of this website.

Photo below shows an erosion surface in the microbialite.