Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Geochemistry, biomarker, and δ13C of kerogen for the Xiamaling Formation from the top of unit 4 to the bottom of unit 2. TOC, from both the core and outcrop samples are presented. Data include both black shales and other sediment types like cherts. Vertical dotted lines represent concentration ratios relative to crustal average (see Supporting Information and Tables S1 and S2).
