Abstract: The report summarizes progress on geologic and hydrologic research related to the disposal of radioactive wastes. The research is described according to whether it is related most directly to (1) high-level and transuranic wastes; (2) low-level wastes, or (3) uranium mill tailings. Included is research applicable to the identification and geohydrologic characterization of waste-disposal sites, to investigations of specific sites where wastes have been stored, and to studies of regions or environments where waste-disposal sites might be located. A significant part of the activity is concerned with techniques and methods for characterizing disposal sites and studies of geologic and hydrologic processes related to the transport and (or) retention of waste radionuclides.

From introduction: This report presents the findings of surveys of the extent of the oil fields in the gulf coastal plain.

This article is based on the production of oil in the Caddo oil and gas field on the Gulf Coastal plain.

Preface: The present paper is the first of a new series to be published by the Geological Survey under the title "Shorter contributions to general geology."