Lichen stromatolite explained

Lichen stromatolites are laminar calcretes that are proposed as being formed by a sequence of repetitions of induration followed by lichen colonization. Endolithic lichens inhabit areas between grains of rock, chemically and physically weathering that rock, leaving a rind, which is then indurated (hardened), then recolonized.^{[1] [2]}

See also

• Stromatolite

Notes and References

1. Lichen Stromatolites: Criterion for Subaerial Exposure and a Mechanism for the Formation of Laminar Calcretes (Caliche). Colin F. Klappa . Journal of Sedimentary Petrology. 49. 1979. 2. 387–400. 10.1306/212F7752-2B24-11D7-8648000102C1865D .
2. Paleobotany: The Biology and Evolution of Fossil Plants, Edith L. Taylor, Thomas N. Taylor, Michael Krings, page 119, https://books.google.com/books?id=_29tNNeQKeMC&dq=lichen+stromatolite&pg=PA119