Abstract
The Torlesse terrane of New Zealand is an ancient subduction complex consisting of deformed turbidite-facies rocks. These are mainly thick-bedded sandstone (facies B and C) with subordinate mudstone (facies D and E), comparable to inner- and middle-fan deposits of a submarine fan. Strata were deposited in trench-floor and trench-slope settings that received sandy sediment from slope-cutting submarine canyons. The dominance of sandstone suggests that some mudstone may have been selectively subducted. Construction of a detailed sediment dispersal model is not possible because tectonic deformation has largely destroyed original facies relationships and paleocurrent patterns.
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D. G. Howell’s research in New Zealand was in conjunction with a USGS/DSIR cooperative program.
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MacKinnon, T.C., Howell, D.G. Turbidite facies in an ancient subduction complex: Torlesse terrane, New Zealand. Geo-Marine Letters 3, 211–216 (1983). https://doi.org/10.1007/BF02462470
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DOI: https://doi.org/10.1007/BF02462470