Tuffaceous mud is a volumetrically important volcaniclastic facies of submarine arc volcanism and record of climate change

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doi: 10.1002/2017GC007300
Author(s): Gill, J. B.; Bongiolo, E. M.; Miyazaki, T.; Hamelin, C.; Jutzeler, M.; DeBari, S.; Jonas, A. S.; Vaglarov, B. S.; Nascimento, L. S.; Yakavonis, M.
Author Affiliation(s): Primary:
University of California at Santa Cruz, Department of Earth and Planetary Sciences, Santa Cruz, CA, United States
Universidade Federal do Rio Rio de Janeiro, Brazil
Japan Agency for Marine-Earth Science and Technology, Japan
University of Bergen, Norway
University of Tasmania, Australia
Washington University at Bellingham, United States
University of Kiel, Germany
Volume Title: Geochemistry, Geophysics, Geosystems - G<sup>3</sup>
Source: Geochemistry, Geophysics, Geosystems - G>3`, 19(4), p.1217-1243. Publisher: American Geophysical Union and The Geochemical Society, United States. ISSN: 1525-2027
Note: In English. 123 refs.; illus., incl. 2 tables, sketch map
Summary: The inorganic portion of tuffaceous mud and mudstone in an oceanic island arc can be mostly volcanic in origin. Consequently, a large volume of submarine volcaniclastic material is as extremely fine-grained as products of subaerial eruptions (<100 µm). Using results of IODP Expedition 350 in the Izu rear arc, we show that such material can accumulate at high rates (12-20 cm/k.y.) within 13 km of the nearest seamount summit and scores of km behind the volcanic front. The geochemistry of bulk, acid-leached mud, and its discrete vitriclasts, shows that >75% of the mud is volcanic, and that most of it was derived from proximal rear arc volcanic sources. It faithfully preserves integrated igneous geochemical information about arc evolution in much the same way that terrigenous shales track the evolution of continental crust. In addition, their high sedimentation rate enables high resolution study of climate cycles, including the effects of Pleistocene glaciation on the behavior of the Kuroshio Current in the Shikoku Basin south of Japan. Abstract Copyright (2018), . American Geophysical Union. All Rights Reserved.
Year of Publication: 2018
Research Program: IODP Integrated Ocean Drilling Program
IODP2 International Ocean Discovery Program
Key Words: 02 Geochemistry; 05 Petrology, Igneous and Metamorphic; Cenozoic; Chemical composition; Clastic rocks; Clastic sediments; Climate change; Currents; Cycles; Electron microscopy data; Electron probe data; Eruptions; Expedition 350; Glacial environment; Glaciation; Grain size; Histograms; IODP Site U1437; Igneous rocks; International Ocean Discovery Program; Island arcs; Isotope ratios; Isotopes; Izu-Bonin Arc; Kuroshio; Major elements; Metals; Mineral composition; Mud; Nd-144/Nd-143; Neodymium; North Pacific; Northwest Pacific; Ocean currents; Pacific Ocean; Pleistocene; Pyroclastics; Quaternary; Rare earths; SEM data; Sedimentary rocks; Sediments; Shale; Shikoku Basin; Stable isotopes; Statistical analysis; Submarine volcanoes; Terrigenous materials; Trace elements; Tuff; Volcanic ash; Volcanic belts; Volcanic rocks; Volcaniclastics; Volcanism; Volcanoes; West Pacific; X-ray diffraction data
Record ID: 2018068107
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom, Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union

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