Richard J. Walker
University of Maryland, College Park, MD
Activity
2006
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A STABLE ISOTOPE AND RE-OS STUDY OF ORGANIC-RICH MUDSTONES ACROSS A PROTEROZOIC GLACIAL CYCLE IN BRAZIL
T46 Changes in Ocean and Atmospheric Redox State and the Evolution of Life IISunday, 22 October 20061:30 PM - 5:30 PM
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RELATIONSHIPS BETWEEN MIGMATITES OF THE SILURIAN RANGELEY FORMATION AND THE WILDCAT GRANITE: NEW HAMPSHIRE, USA
21 Time Slices Across the Appalachians: Tectonic Settings of Silurian-Devonian Igneous Rocks in the Appalachian Orogen ITuesday, 21 March 20068:00 AM - 12:00 PM
2005
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HIGHLY SIDEROPHILE ELEMENT COMPOSITION OF THE EARTH’S PRIMITIVE UPPER MANTLE: CONNECTION TO LUNAR IMPACT MELT ROCKS AND LATE ACCRETION
12 The First 800 Million Years—The Initial Earth SystemTuesday, 9 August 20059:00 AM - 12:00 PM