GSA Geoscience Trivia
- For a brief time, the Mississippi River flowed backward, due to what geologic event?
1812 New Madrid earthquake(s)
- The La Brea Tar Pits, which is one of the greatest known fossil repositories in California, features many examples of California's state fossil. What is it?
Smilodon californicus, the sabre-toothed cat
- In geology, to what do the terms "jelly sandwich" and "crème brûlée" refer?
The continental lithosphere
Our GSA Community — Now 26,000+ Members Strong!
GSA is proud to serve, and we thank YOU for your continued support and involvement.
If you still need to renew your membership, please do so now.
Students and recent graduates: Find valuable information HERE on GSA programs, discounts, and opportunities.
Classifieds — Jobs & More
Science Teaching Aids