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Debris-flow deposits of Early Miocene age, Deadman Stream, Marlborough, New Zealand.

January 1, 1980

Detailed analysis is presented of a conformable succession of conglomerates and sandstones lying between massive marine mudstones. The coarse sediments reflect deposition by a spectrum of subaqueous debris-flow mechanisms during an early pulse of tectonism that ultimately resulted in Plio-Pleistocene eversion of the Kaikoura Mountains. Sparse pebbly mudstones and rare sandy conglomerates show disoriented clasts and reflect high-viscosity flows and slurry- creep flow mechanisms. Other deposits have little mud matrix, hence appear to reflect low-viscosity flow processes. Common sorted sandstones and some conglomeratic sandstones show diffuse parallel lamination. Other conglomeratic sandstones show trough cross-bedding which we attribute to entrained bedload movement during intersurge episodes of debris flow. - from Authors

Publication Year 1980
Title Debris-flow deposits of Early Miocene age, Deadman Stream, Marlborough, New Zealand.
DOI 10.1016/0037-0738(80)90032-9
Authors D.W. Lewis, M.G. Laird, R.D. Powell
Publication Type Article
Publication Subtype Journal Article
Series Title Sedimentary Geology
Index ID 70012318
Record Source USGS Publications Warehouse
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