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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, Suparna
- 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.
- Subjects
NARMADA River Valley (India); OCEAN waves; EARTH-Moon physics; CRETACEOUS Period; SANDSTONE
- Publication
Current Science (00113891), 2014, Vol 107, Issue 6, p1032
- ISSN
0011-3891
- Publication type
Article