Earth: An Introduction to Physical Geology (12th Edition)

Published by Pearson
ISBN 10: 0134074254
ISBN 13: 978-0-13407-425-2

Chapter 22 - Section 22.6 - Earth’s First Life - Concept Checks - Page 687: 2

Answer

Stromatolites are layered, rock-like structures that form in shallow water environments. They are created through the trapping and binding of sediment particles by microbial communities, primarily by cyanobacteria. These microbial communities are thought to be the primary producers of stromatolites. Cyanobacteria, also known as blue-green algae, are prokaryotic organisms capable of photosynthesis.

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