The South Texas Geological Society is a membership-based organization, that core mission is to advance the science, promotion, and research of geology in South Texas. 

The South Texas Geological Society, founded in 1929, is a non-profit organization whose purposes are:

• To advance the science of geology;
• To promote the technology of exploring for, finding and producing raw material from the earth, their conservation and propitious use;
• To foster the spirit of scientific research; To disseminate facts relating to geological science;
• To inspire and maintain a high standard of professional conduct on the part of its members; and
• To provide the public with means of recognition of adequately trained and professionally responsible geologists.