This guidebook is a reprinting of a field guide prepared by Shell Development Company as part of a three-day industrial short course for full-time college teachers in geology, conducted from March 30 to April 1, 1970, by Shell Development Company, Houston, Texas, in cooperation with AGI Council on Education in Geological Sciences. The guidebook includes excellent summaries and well-illustrated documentation of elastic depositional environments and related facies of the southeastern Texas Coast. The models presented herein by the Shell group - based on several years of detailed investigation and three-dimensional reconstruction - should be of considerable interest to individuals concerned with the interpretation and study of ancient depositional environments and modern counterparts. For this reason, the Bureau of Economic Geology is pleased to publish this guide as Guidebook No. 11 in its regular guidebook series.