Paleogeography and sediment dispersal patterns of the proterozoic Bhander Group, western India
Abstract Directionals, isopachs, lateral and vertical facies changes, and stratigraphic relationships were employed to reconstruct the shoreline, paleoslope and dispersal patterns of the Porterozoic sediments comprising the Bhander Group in the Mandalgarh-Singoli area of the western part of the Great Vindhyan Basin. An east-southeast—west-northwest shoreline and a north-northeast paleoslope was inferred. Sediment dispersal patterns were recognized by relating paleocurrents to the inferred shoreline and paleoslope. The onshore offshore and cross-slope/longshore dispersal patterns so obtained for the Bhander Group are in agreement with its origin in coastal environments. Earlier workers postulated a northwest regional paleoslope of the Vindhyan Basin on the assumption that the predominant paleocurrent pattern reflected the paleoslope. This study, however, suggests that the predominant paleocurrent pattern in the study area is independent of the paleoslope and represents the longshore sediment dispersal.