October 21, 2016
GECSC Research Geologist Margaret Berry was interviewed in "The Bridge" blog post Mapping Earth's History with an Eye on the Future. Margaret discusses the societal importance of geologic maps and describes some of the methods, tools, and data sources she uses to create a geologic map. "The Bridge" is a blog published by the American Geophysical Union that focusses on the connection between science and policy, and this story appeared as part of their Earth Science Week series (Friday, Oct. 14, 2016, Geologic Map Day).
October 18, 2016
Expanding the role of reactive transport models in critical zone processes
By Li Li, Kate Maher, Alexis Navarre-Sitchler, Jenny Druhan, Christof Meile, Corey Lawrence (GECSC), and others. Published in Earth-Science Reviews.
Multi-component Reactive Transport Models (RTMs) have been used extensively to explore the interactions of geothermal, hydrologic, geochemical, and geobiological processes in earth's critical zone (the zone that extends from the top of vegetation to the bottom of groundwater). Driven by extensive data sets now available from intensive measurements efforts, there is a pressing need to couple RTMs with other community models to explore non-linear interactions among the atmosphere, hydrosphere, biosphere, and geosphere. This article reviews the history of RTM development, summarizes the current state of RTM approaches, and identifies new research directions, opportunities, and infrastructure needs to broaden the use of RTMs.
October 17, 2016
Pinedale glacial history of the upper Arkansas River valley: New moraine chronologies, modeling results, and geologic mapping
By Avriel Schweinsberg, Jason Briner, Ralph Shroba (GECSC), Joseph Licciardi, Eric Leonard, Keith Brugger, and Charles Russell. Chapter in Unfolding the Geology of the West, Geological Society of America (GSA) Field Guide 44.
This fieldtrip guide for the GSA 2016 Annual Meeting outlines the glacial history of the upper Arkansas River valley, Colorado, and builds on a previous GSA field trip to the area in 2010. The research presented in this publication was stimulated by the Geologic Map of the Granite 7.5' Quadrangle, Lake and Chaffee Counties, Colorado produced by GECSC members Ralph Shroba, Karl Kellogg, and Ted Brandt, in which the mapping of surficial deposits was based chiefly on the interpretation of newly acquired LiDAR data and field investigations. The new
10Be exposure ages generated for the mapped area leads to an improved understanding of the controls and timing of glaciation in the western United States, the modeling of glacial-lake outburst flooding, and the reconstruction of paleotemperature through glacier modeling.