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Ichnology and Depositional Environment of the Cambrian Nagaur Sandstone (Nagaur Group) Along the Dulmera Section, Bikaner‐Nagaur Basin, Rajasthan
Author(s) -
SINGH Birendra P.,
BHARGAVA O. N.,
CHAUBEY Ravi S.,
KISHORE Naval
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12336
Subject(s) - ichnofacies , trace fossil , geology , paleontology , sedimentary depositional environment , structural basin
The Lower Cambrian Nagaur Sandstone (Marwar Supergroup) has yielded trace fossils Treptichnus, Cruziana , serially repeated Rusophycus, Diplichnites, Monomorphichnus, Bergaueria , arthropod swimming traces and leap frogging marks of Cruziana ichnofacies. This ichnofossils assemblage is dominantly preserved in fine to medium grained red sandstone beds of the Mohra Member (Nagaur Sandstone). The presence of graded rip‐up clasts, current ripples, dune cross‐stratification with mud drapes and tidal bundles indicates a subtidal paleoenvironment for the deposition of Nagaur Sandstone Formation, which is corroborated by the Cruziana ichnofacies trace fossil assemblage.