Offscraping accretion of Jurassic chert-clastic complexes in the Mino-Tamba Belt, central Japan

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doi: 10.1016/0191-8141(93)90092-O
Authors:Kimura, Katsumi; Hori, Rie
Author Affiliations:Primary:
Geological Survey of Japan, Department of Geology, Tsukuba, Japan
Volume Title:Journal of Structural Geology
Source:Journal of Structural Geology, 15(2), p.145-161. Publisher: Pergamon, Oxford-New York, International. ISSN: 0191-8141
Publication Date:1993
Note:In English. 54 refs.; illus. incl. 2 plates, sects., geol. sketch maps
Summary:The Inuyama sequence, a Jurassic coherent chert-clastic complex in a part of the Jurassic Mino-Tamba belt, is characterized by a series of stacked thrust sheets consisting of an early Triassic to Middle Jurassic oceanic stratigraphic succession. The geometric pattern of the thrust sheets defines a S-verging imbricate fan system; each thrust sheet is subdivided into two lithotectonic units separated by an intrasheet detachment zone within the siliceous mudstone interval. Folds in ribbon chert, which are closely related to thrusting, were developed during the diagenetic stage in which ribbon chert was still interbedded CT-chert and CT- porcelanite. The structural evolution of the Inuyama sequence is characterized by an offscraping accretionary process followed by down-stepping of the decollement and out-of-sequence thrusting. [J.M.H.]
Subjects:Accretionary wedges; Chemically precipitated rocks; Chert; Clastic rocks; Decollement; Faults; Folds; Jurassic; Kinematics; Mesozoic; Sedimentary rocks; Thrust faults; Asia; Far East; Honshu; Japan; Mino Belt; Inuyama Sequence
Coordinates:N350000 N353000 E1370000 E1363000
Abstract Numbers:94M/1120
Record ID:1993005858
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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