Volume 10, Issue 4
GSA Today : April 2000 Issue
Science
In this issue
Science
Vestiges of a Beginning: Clues to the Emergent Biosphere Recorded in the Oldest Known Sedimentary Rocks
Stephen J. Mojzsis, and T. Mark Harrison
• Volume 10, Issue 4

GSA Connects 2026 from 11–14 October – Save the date and start planning now.
Stephen J. Mojzsis, and T. Mark Harrison
• Volume 10, Issue 4
