Primary Recipient

COLORADO STATE UNIVERSITY

Amount

$454,993.00

Award Date

9/29/2009

Administering Agency

National Science Foundation

CDFA Number

47.082

CDFA Program Title

Trans-NSF Recovery Act Reasearch Support

Description

Absolute ages for the deposition of sedimentary rocks can be determined by radiometric dating of organic material in carbon-rich shales, using the decay of rhenium (Re) to osmium (Os). In particular, fossils of organic-walled graptolites are commonly foun