Life on land in the Precambrian
Horodyski RJ and Knauth LP. 1994. Life on land in the Precambrian. Science. 263(5146):494-498
Microfossils have been discovered in cavity-fill and replacement silica that occurs between chert-breccia clasts in 1200-million-year-old paleokarst at the top of the Beck Spring Dolomite, southeastern California. Microbial communities on Precambrian (>550 million years ago) land may have been extensive enough to affect weathering, erosion, sedimentation, and geochemical processes.
- Type
- Journal Article
- Authors
- Horodyski, Robert; Knauth, L
- Units
- DEVA
- Keywords
- Apache Group, Arizona, Beck Spring Dolomite, biogenic processes, Breccia, California, Carbonate Rocks, central Arizona, Chemical weathering, Clastic Rocks, clasts, Geology, Gila County Arizona, Inyo County California, Mescal limestone, Microfossils, middle Proterozoic, Navajo County Arizona, Pahrump Series, paleokarst, Precambrian, problematic fossils, problematic microfossils, Proterozoic, San Bernardino County CA, Sedimentary Rocks, silica, Sketch Maps, solution features, Southern California, terrestrial environment, Upper Precambrian, Weathering