Marine Volcaniclastic Record of Early Arc Evolution in the Eastern Ritter Range
Research Article Geochemistry, Geophysics, Geosystems DOI 10.1029/2018GC007456 Marine volcaniclastic record of early arc evolution in the eastern Ritter Range pendant, central Sierra Nevada, California Barth, A.P.1 , Wooden, J.L.2, Riggs, N.R.3, Walker, J.D.4 , Tani, K.5, Penniston– Dorland, S.C.6, Jacobson, C.E.7 , Laughlin, J.A.1, Hiramatsu, R.1 1Department of Earth Sciences, Indiana University~Purdue University Indianapolis, Indianapolis, IN 46202 2U.S. Geological Survey, Menlo Park, CA (retired) 3School of Earth Sciences and Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona 86011 4Department of Geology, University of Kansas, Lawrence, Kansas 66045 5National Museum of Nature and Science, Tokyo, Japan 6Department of Geology, University of Maryland, College Park, MD 20742 7Department of Earth and Space Sciences, West Chester University, West Chester, PA 19383, and Department of Geological and Atmospheric Sciences, Iowa State University Key Points: • Detrital zircons preserve age and trace element evidence of ignimbrite provenance • Zircons record >50 million years of early arc magmatic pulses and lull • Explosive volcanism and batholith construction were closely coupled at million-year time scales ABSTRACT Marine volcaniclastic rocks in the Sierra Nevada preserve a critical record of silicic magmatism in the early Sierra Nevada volcanic arc, and this magmatic record provides precise minimum age constraints on subduction inception and tectonic evolution of the early Mesozoic Cordilleran ___________________________________________________________________ This is the author's manuscript of the article published in final edited form as: Barth A.P., Wooden J.L., Riggs N.R., Walker J.D., Tani K., Penniston–Dorland S.C., … Hiramatsu R.
[Show full text]