作者: G. F. Moore , H. G. Billman , P. E. Hehanussa , D. E. Karig
DOI: 10.1086/628489
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摘要: The Neogene strata exposed on Nias Island, Indonesia consist of Miocene marls, sandstones, and conglomerates the beds that overlie Oyo Complex, a tectonic melange pre-Miocene age. They provide an excellent opportunity to study ancient trench-slope sedimentation. Lithofacies vertical sedimentary sequences in are similar those described from submarine fan environments. overall describe coarsening-and thickening-upward trend. basal portion sections consists dominantly thin-bedded fine-grained turbidites marls Facies D G. Sandstone-to-shale ratios show general up-section increase, which is observed as corresponding increase A, B, C sandstones decrease siltsones marls. Within large-scale thickening-and coarsening-upward cycles smaller-scale thickening- thinning- fining-upward characteristic ...