Turbidite deposits around the Simla Hills. A study from the Simla series, himachal pradesh (India)

The sedimentology of the Simla Series is practically unstudied. In connection with structural and stratigraphic work, Ghosh et al. (1966) gave a brief sedimentological description of the rocks and suggested that the Simla Series represent a geosynclinal sediment and that the pebbly shale horizons represented an intraformational conglomerate formed by either a turbidity current or a mud flow. Pandey and Narayan (1966) suggested that the Simla Series rocks represent flysch-type sediments. In the present study the authors describe the primary sedimentary structures, vertico-lateral variation of the sediments, etc., in greater detail. Plane laminae and the predominance of finer sediments (shale, siltstone and fine-grained sandstone) suggest a deep-water origin of the sediments. The lithological character and the sedimentary structures strongly suggest that the Simla Slate Series are turbidite deposits belonging to flysch facies.