Hot Springs Microbes Hold Key To Dating Sedimentary Rocks, Researchers Say
http://www.sciencedaily.com/releases/2008/01/080122154606.htm

ScienceDaily

This is a ScienceDaily article about the effect of microbes on sedimentary rock formation. It covers the process of calcium carbonate crystalization, the effect of microbes on that process, and how the interaction can be used to improve dating of sedimentary rocks and identify places/times when microbial life may have been present in the past. This article is geared for the general public and would be appropriate for high school or higher level students.

Subject: Geoscience:Geology:Mineralogy:Biomineralogy, Crystal Chemistry, Geoscience:Geology:Mineralogy, Geoscience:Biogeosciences , Geology:Sedimentary Geology, Sedimentary Geology:Sediments and Sedimentary Rocks, Biology, Geoscience:Paleontology, Geology:Sedimentary Geology:Sedimentary Structures, Sediments and Sedimentary Rocks:Carbonates , Environmental Science:Ecosystems:Biogeochemical cycling, Biology:Ecology:Metabolism, Environmental Science:Ecosystems, Biology:Ecology, Biogeochemistry, Evolution, Ecology:Abiotic Relations, Biology:Evolution:Patterns, Chemistry, Biology:Molecular Biology, Microbiology
Resource Type: Scientific Resources:Overview/Reference Work, Scientific Resources
Grade Level: General Public, College Lower (13-14), High School (9-12)
Sediments/Sedimentary Rocks: Carbonates
Theme: Teach the Earth:Course Topics:Paleontology, Sedimentary Geology, Biogeoscience, Environmental Science, MineralogyKeywords: microbial communities, geological record, calcium carbonate mineralization