Session: Upper Crust Evolution: Models of Formation and Composition I (AGU Fall Meeting 2018)

V34C:
Upper Crust Evolution: Models of Formation and Composition I

Session ID#: 57359

Session Description:

The compositional and structural evolution of the continental crust is one of the outstanding problems in the Earth Sciences. In particular, the generation of the felsic upper crust throughout Earth's history is fundamental to our understanding of continental growth and stabilization. Questions such as the temporal change in upper crust composition and how felsic rocks are formed in the modern day versus in the Archean/Early Earth remain to be answered. This session invites a broad range of studies related to the formation and current physical and chemical state of the felsic upper crust, with emphasis on studies which incorporate temporal and spatial change. We welcome field, petrological/geochemical, geophysical and modeling studies.

Primary Convener: Scott Alan Wipperfurth, University of Maryland College Park, Department of Geology, College Park, MD, United States

Conveners: C. Brenhin Keller, Berkeley Geochronology Center, Berkeley, CA, United States and Oliver E Jagoutz, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States

Primary Liaison: Scott Alan Wipperfurth, University of Maryland College Park, Department of Geology, College Park, MD, United States

Chairs: C. Brenhin Keller, Berkeley Geochronology Center, Berkeley, CA, United States, Oliver E Jagoutz, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States and Scott Alan Wipperfurth, University of Maryland College Park, Department of Geology, College Park, MD, United States

OSPA Liaison: Scott Alan Wipperfurth, University of Maryland College Park, Department of Geology, College Park, MD, United States

Co-Organized with:
Volcanology, Geochemistry and Petrology, and Tectonophysics

Cross-Listed:

S - Seismology
T - Tectonophysics

Proposed Co-Organized Session with:

S - Seismology
T - Tectonophysics

Index Terms:

1020 Composition of the continental crust [GEOCHEMISTRY]
8124 Earth's interior: composition and state [TECTONOPHYSICS]
8413 Subduction zone processes [VOLCANOLOGY]
8415 Intra-plate processes [VOLCANOLOGY]

Abstracts Submitted to this Session:

4.1 Ga zircon grains from the Barberton greenstone belt: New constraints on the Hadean crust (417027)

Nadja Drabon, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States, Gary R Byerly, Louisana State Univ, Baton Rouge, LA, United States, Benjamin L Byerly, University of California, Santa Barbara, Santa Barbara, United States and Donald R. Lowe, Stanford Univeristy, Geological Sciences, Stanford, CA, United States

Hadean geodynamics and its implications for the nature of early crust (Invited) (401316)

Jun Korenaga, Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States

Tamara Carley, Lafayette College, Geology and Environmental Geosciences, Easton, United States, Elizabeth A Bell, University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, United States, Calvin F Miller, Vanderbilt University, Earth and Environmental Sciences, Nashville, United States, Lily L Claiborne, Vanderbilt University, Earth and Environmental Sciences, Nashville, TN, United States and T. Mark Harrison, UCLA, Earth, Planetary, and Space Sciences, Los Angeles, United States

Neoarchean Ferroan Granitoids and Link to Magnesian Granitoids, North China Craton: Implications for Late Archean Granitoid Diversification (384812)

Wei Wang¹, Shuwen LIU², Peter A. A. Cawood³, Maojiang Wang² and Rongrong Guo⁴, (1)The State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences and Resources, China University of Geosciences, Beijing, China, (2)Peking University, School of Earth and Space Sciences, Beijing, China, (3)Monash University, Melbourne, Australia, (4)Northeastern University, Boston, MA, United States

Secular evolution of mass transfer across the Moho - implications for evolution of the continental crust (366521)

Grant Michael Bybee, University of Witwatersrand, Wits, South Africa, Steven E Zhang, University of the Witwatersrand, School of Geosciences, Johannesburg, South Africa and Alberto M. Roman, Jet Propulsion Laboratory, Pasadena, CA, United States; Institut de Physique du Globe de Paris, Paris, France

Evidence for an underplated island arc as the source of a continental arc monzonite (348085)

Elizabeth Gammel, University of Missouri Columbia, Columbia, MO, United States and Peter I Nabelek, University Missouri-Columbia, Geological Sciences, Columbia, MO, United States

Nishinoshima Volcano in the Ogasawara (Bonin) Arc: New Continent from the Ocean? (401291)

Yoshihiko Tamura, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Osamu Ishizuka, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan, Tomoki Sato, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan and Alex RL Nichols, University of Canterbury, Department of Geological Sciences, Christchurch, New Zealand

Polybaric crystallization of hydrous basalts in a continental arc: evidence from Hidden Lakes mafic complex, Sierra Nevada batholith, California (449835)

Madeline J. Lewis, California Institute of Technology, Geological and Planetary Sciences, Pasadena, CA, United States, Claire E Bucholz, California Institute of Technology, Geological and Planetary Sciences, Pasadena, United States and Oliver E Jagoutz, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, United States