Data in the dirt: Deciphering landscape evolution and environmental history from ancient desert soils
Colin Robins
Keck Science Department
From: 11:00 AM To: 12:00 PM
Thursday, Oct 9, 2014
Burns Lecture Hall, Keck Science Center
Soils, even those formed in Earth’s driest landscapes, are dynamic biological, chemical, and physical environments. Far from static, soil profiles vibrate and churn over geologic time with the movement of organisms, solutions, minerals, and gases. Desert soil horizons are characterized by the accumulation of salts such as calcium carbonate; however, this process is not unidirectional. Small changes in rainfall over centuries or millennia can trigger large magnitude responses in soil solution chemistry, mineralogy, morphology, and landscape stability. This talk will describe how the mineralogy and micromorphology of arid soils and paleosols can be used to interpret past environmental conditions, and to constrain rates of landscape change.
Seminar Registered by: Velda Yount


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