Huixiangping Fm

East Guizhou. The Huixiangping Fm was named by the Party of Regional Geological Survey, Guizhou Bureau of Geology Resources in 1974. The type section is at Huixiangping Village southeast of Fanjing Mt. Guizhou Province. Middle formation in the Fanjingshan Gr.

Synonym: （茴香坪组）

In the type section, the Huixiangping Fm is composed of very thick-bedded metamorphosed volcanic lava, sandwiched with metamorphosed clastic sediments. The volcanic components are dominated by grey-green metamorphosed ultrabasic rock (pyroxene peridotite and olivine pyroxenite), and gabbro, diabase, sandwiched with metamorphosed keratophyre, agglomerate, as well as spilite, volcanic breccia and tuff. The sedimentary intercalations are of dark grey-grey sericite slate, tuffaceous sandstone and sandy slate, siltstone and sandstone that constitute the thin cyclothem. The thickness of the formation varies from 1800 to 4100 m.

[Figure: The stratigraphic column of the Fanjingshan Gr (the group is about 1000 m thick). a. Pillow lava of the Huixiangping Fm.; b. The boundary between the underlying Fanjingshan Gr and the Furongba Fm (= lower Jialu Fm?) which is the basal formation of the Xiajiang Gr.]