Presented is a review of papers presented at the 25th International Geological Congress held August 16-25, 1976, Sydney, Australia. Topics include precambrian geology, tectonics, biostratigraphy, geochemistry, quaternary geology, engineering geology, planetology, geological education, and stress environments. (SL)

Presented is a review of the activities, council meetings, open sessions, and field excursions offered at the 25th International Geological Congress held August 16-25, 1976, Sydney, Australia. (SL)

Describes a report prepared for the Federal Energy Administration by a group of petroleum geologists. The study reports mean estimates of 82 billion barrels of crude oil and 484 trillion cubic feet of natural gas in the United States, including both onshore and offshore resources. (MLH)

Explains the way in which oil and gas reserves are estimated, and the variation in these estimates according to the year of the resources' estimation and the group undertaking the survey. A recent Federal Energy Administration study suggests that recoverable oil and gas resources have limits that may be approached in the next 50 years. (MLH)