Global Precambrian Sedimentation Syndicate
- GPSS is an informal working group dedicated to the analysis of Precambrian basins worldwide, with an emphasis on the evolution of volcano-sedimentary basins.
- http://www.up.ac.za/academic/geol/gpss/

Site of the GCSSEPM Foundation and Section
- Gulf-coast regional branch of SEPM, an international non-profit professional organization disseminating geological information.
- http://www.gcssepm.org/

Society for Sedimentary Geology (SEPM)
- An international non-profit professional organization based in Tulsa, Oklahoma dedicated to the dissemination of scientific information sedimenatary studies and related fields.
- http://www.sepm.org/

Sedimentological Society of Egypt
- Concerned with all disciplines of sedimentary geology, its applications and economic inferences.
- http://www.salty2k.com/sse/