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Discovery of Jurassic ammonoids from the Shyok suture zone to the northeast of Chang La Pass, Ladakh, northwest India and its tectonic significance
Author(s) -
Ehiro Masayuki,
Kojima Satoru,
Sato Tadashi,
Ahmad Talat,
Ohtani Tomoyuki
Publication year - 2007
Publication title -
island arc
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.554
H-Index - 58
eISSN - 1440-1738
pISSN - 1038-4871
DOI - 10.1111/j.1440-1738.2007.00562.x
Subject(s) - geology , fibrous joint , paleontology , cretaceous , terrigenous sediment , ophiolite , mesozoic , biostratigraphy , tectonics , sedimentary rock , anatomy , structural basin , medicine
Callovian (late Middle Jurassic) ammonoids Macrocephalites and Jeanneticeras were recovered from the Shyok suture zone, northeast of Chang La Pass, Ladakh, northwest India. They are the first reliable Jurassic fossils and the oldest chronologic data from the Shyok suture zone. The ammonoid‐bearing Jurassic strata, newly defined as the Tsoltak Formation, consist largely of terrigenous mudstone with thin sandstone beds and were probably a part of the continental basement to the Cretaceous Ladakh Arc.