GSSP for Visean Stage
Definition:
The GSSP for the base of the Visean Stage is defined on the first appearance of Eoparastaffella simplex in the lineage Eoparastaffella ovalis – Eoparastaffella simplex (foraminifers), at the Pengchong section, Guangxi, South China.
Location:
At the Pengchong section, Guangxi, South China.
The Pengchong Member is composed of dark grey limestone beds of various thicknesses (mainly in the range 20-150 cm) interbedded with subordinate thin- to medium-bedded (≤10 cm but up to 60 cm locally) dark calcareous shales that become more abundant and thicker towards the top. The member is organized in decametre-thick parasequences, either thinning and shalier or conversely thickening and more limestone-rich upwards.
Primary Markers:
Benthic Foraminifer FAD Eoparastaffella simplex.
Secondary Markers:
Radiometric Dating:
Stable Carbon Isotopes:
Correlation Events:
Benthic Foraminifer FAD Eoparastaffella simplex.