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, , GeosciencePaleontology, Geology:Sedimentary Geology:Sedimentary Structures, Biology, Environmental Science:Ecosystems:Biogeochemical cycling, Geoscience:Geology:Sedimentary Geology:Sediments and Sedimentary Rocks:Carbonates , Biology:Ecology:Abiotic Relations, Biology:Ecology, Biogeochemistry, Environmental Science:Ecosystems, Biology:Evolution, Ecology:Metabolism, Chemistry, Biology:Microbiology, Molecular Biology, Evolution:Patterns
Resource Type: Scientific Resources:Overview/Reference Work, Scientific Resources
Grade Level: General Public, High School (9-12), College Lower (13-14)
Sediments/Sedimentary Rocks: Carbonates
Topics: Earth surface:Sedimentary Geology, Earth surface, Sedimentary Geology:Sedimentary Structures, Time/Earth History, Biosphere:Microbiology, Evolution:Processes, Biosphere, Ecology:Metabolism, Biosphere:Evolution, BiogeochemistryKeywords: microbial communities, geological record, calcium carbonate mineralization