1. Ge 101. Introduction to Geology and Geochemistry Lecture 16. Narratives from Geologic Maps; Introduction to Earth History

2. Image 16.1. Grand Prismatic Pool, Yellowstone National Park

3. Image 16.2. Modern stromatolites, Bahamas

4. Image 16.3 Cambrian stromatolites

5. Ancient stromatolites form columns. Modern stromatolites grow in the intertidal zone. A cross section reveals layering similar to that seen in ancient stromatolites. Microbes live on the surface of the stromatolite. Sediment is deposited on the microbes,......which grow upward through the sediment, forming a new layer. Image 16.3. Building microbial mats (stromatolites)

6. Image 16.5. Ediacaran embryo

7. Image 16.6. Ediacaran ecosystem