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Title: Late Cretaceous diurnal tidal system: A study from Nimar Sandstone, Bagh Group, Narmada Valley, Central India
Authors: Bhattacharya, Biplab
Jha S.
Published in: Current Science
Abstract: Tidalites from the Cenomanian Nimar Sandstone, Bagh Group, Central India, are represented by (i) laterally accreted tidal bundles, (ii) herringbone cross-strata, (iii) sigmoidal cross-strata and (iv) tidal rhythmites with lenticular/wavy bedding. These indicate sedimentation in an upper subtidal to lower intertidal setting within fluvio marine interactive system. Time-series analysis of continuous rhythmic foreset bundles (sub-annual scale) manifests neap-spring tidal cycles within a diurnal tidal system with synodic and sidereal month lengths of ~28.4 lunar days and ~26.28 solar days respectively. Estimated Earth-Moon system parameters of the Late Cretaceous reveal no significant changes during the last ~100 Ma.
Citation: Current Science (2014), 107(6): 1032-1037
Issue Date: 2014
Publisher: Indian Academy of Sciences
Keywords: Cenomanian
Lamina thickness
Lunar orbital cyclicity
Tidal bundles
ISSN: 113891
Author Scopus IDs: 8627465800
Author Affiliations: Bhattacharya, B., Department of Earth Sciences, Indian Institute of Technology, Roorkee, 247 667, India
Jha, S., Department of Earth Sciences, Indian Institute of Technology, Roorkee, 247 667, India
Corresponding Author: Bhattacharya, B.; Department of Earth Sciences, Indian Institute of TechnologyIndia
Appears in Collections:Journal Publications [ES]

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