V44A:
Geochemistry of Sediments and Sediment Recycling and Implications for Crust and Mantle Evolution over Earth History I


Session ID#: 8150

Session Description:
Sedimentary rocks record information on diverse topics such as environmental conditions from the distant past, the average composition of the continents, and the redox state of the oceans and atmosphere.  Although much of the Earth’s sedimentary record has been removed from our view by subduction processes, a long term consequence may be that the mantle “sees” and is influenced by Earth surface conditions.  We seek a broad range of contributions that deal with the record of continental evolution and the rise of oxygen, seen both in the sedimentary record and also potentially in igneous systems as a result of sediment recycling over Earth history.
Primary Convener:  Richard M Gaschnig, University of Massachusetts Lowell, Environmental, Earth and Atmospheric Sciences, Lowell, MA, United States
Conveners:  Xiao-Ming Liu, Carnegie Institution of Washington, Geophysical Laboratory, Washington, DC, United States, Elizabeth A Bell, University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States and Richard M Gaschnig, University of Massachusetts Lowell, Lowell, MA, United States
Chairs:  Richard M Gaschnig, University of Massachusetts Lowell, Lowell, MA, United States and Xiao-Ming Liu, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
OSPA Liaison:  Xiao-Ming Liu, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States

Cross-Listed:
  • EP - Earth and Planetary Surface Processes
  • PP - Paleoceanography and Paleoclimatology
  • T - Tectonophysics
Index Terms:

1030 Geochemical cycles [GEOCHEMISTRY]
1031 Subduction zone processes [GEOCHEMISTRY]
1038 Mantle processes [GEOCHEMISTRY]
1051 Sedimentary geochemistry [GEOCHEMISTRY]

Abstracts Submitted to this Session:

How Recycling of Sediments and Oceanic Crust Have Changed the Nd-Hf Isotopic Composition of the Mantle through Time (Invited) (58625)
Marion Garcon, Carnegie Inst Washington, Department of Terrestrial Magnetism, Washington, DC, United States; Laboratoire Magmas et Volcans, Clermont-Ferrand Cedex, France, Richard Carlson, Carnegie Inst Washington, Earth and Planets Laboratory, Washington, United States, Steven B Shirey, Carnegie Science, Earth and Planets Laboratory, Washington, United States, Catherine Chauvel, Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Université Paris Diderot, Paris, France and Nicholas T Arndt, Université Grenoble Alpes, ISTerre, Grenoble, France
Chromium Redox Equilibria in Fluids and Minerals under Hydrothermal and Subduction-zone Conditions (83463)
Jihua Hao1,2, Dimitri A Sverjensky3 and Robert M Hazen2, (1)Johns Hopkins University, Baltimore, MD, United States, (2)Carnegie Inst, Washington, DC, United States, (3)Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States
Subduction of Organic Carbon into the Earth (Invited) (66276)
Terry A Plank, Lamont-Doherty Earth Observatory, Palisades, United States and Alberto Malinverno, Lamont -Doherty Earth Observatory, Palisades, NY, United States
Magnesium Isotopic Composition of Subducting Marine Sediments (71339)
Yan Hu, University of Washington, Isotope Laboratory, Department of Earth and Space Sciences, Seattle, WA, United States, Fang-zhen Teng, University of Washington, Isotope Laboratory, Earth and Space Sciences, Seattle, WA, United States, Terry A Plank, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States and Kang-Jun Huang, Peking University, School of Earth and Space Sciences, Beijing, China
Sediment Subduction and the Generation of Extreme Geochemical Enrichment in Lavas Erupted at Oceanic Hotspots (Invited) (72948)
Matthew G Jackson1, Jason Schmidt1, Frank J Spera2, Andrew R Kylander-Clark3 and Katherine Sheppard2, (1)University of California Santa Barbara, Earth Science, Santa Barbara, CA, United States, (2)University of California Santa Barbara, Santa Barbara, CA, United States, (3)University of California Santa Barbara, Earth Science, Santa Barbara, United States
Identification of biologically recycled continental materials in banded iron formations (Invited) (59904)
Weiqiang Li1, Brian L Beard2 and Clark Johnson2, (1)Nanjing University, School of Earth Sciences and Engineering, Nanjing, China, (2)University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States
Detrital Zircon Geochronology and Petrology of Sediments from the Barberton greenstone belt: Implications for Provenance and Tectonic Reconstructions (81915)
Nadja Drabon, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States, Donald R. Lowe, Stanford Univeristy, Geological Sciences, Stanford, CA, United States and Gary R Byerly, Louisana State Univ, Baton Rouge, LA, United States
Petrogenesis and Tectonic Implications of Paleoproterozoic Metapelitic Rocks in the Archean Kongling Complex from the Northern Yangtze Craton, South China (59396)
Yihe Li1, Jianping Zheng2, Wei Wang2,3 and Qing Xiong4, (1)China University of Geosciences Wuhan, Institute of Geophysics and Geomatics, Hubei Subsurface Multi-scale Imaging Key Laboratory, Wuhan, China, (2)State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences, China University of Geosciences, Wuhan, China, (3)China University of Geosciences Wuhan, Wuhan, China, (4)China University of Geosciences Wuhan, State Key Laboratory of Geological Processes and Mineral Resources, Wuhan, China

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