Reston, VA – The U.S. Geological Survey (USGS) and the Association of American State Geologists (AASG) announced that they have developed an updated geologic time scale and color scheme for use in ...
SpaceNews: USGS and AASG Unveil A Geologic Time Scale and Color Scheme for Use in Creating Geologic Maps
USGS and AASG Unveil A Geologic Time Scale and Color Scheme for Use in Creating Geologic Maps
Geological time, generally considered as a system of eras, periods and epochs materialized in rock strata, might actually follow a simple and unifying model. Indeed, a new study led by physicist Shaun ...
insider.si.edu: A geologic time scale 2004 / edited by Felix M. Gradstein, James G. Ogg, and Alan G. Smith
Introduction / F.M. Gradstein -- Chronostratigraphy : linking time and rock / F.M. Gradstein, J.G. Ogg and A.G. Smith -- Biostratigraphy : time scales from graphic ...
A geologic time scale 2004 / edited by Felix M. Gradstein, James G. Ogg, and Alan G. Smith
insider.si.edu: The geologic time scale 2012 / editors, Felix M. Gradstein ... [et al.] ; [contributors, F. M. Gradstein ... [et al.]]
The geologic time scale 2012 / editors, Felix M. Gradstein ... [et al.] ; [contributors, F. M. Gradstein ... [et al.]]
insider.si.edu: The Anthropocene as a geological time unit : a guide to the scientific evidence and current debate / edited by Jan Zalasiewicz, University of Leicester [and three others]
The Anthropocene as a geological time unit : a guide to the scientific evidence and current debate / edited by Jan Zalasiewicz, University of Leicester [and three others]