Recent
studies of paleosols have provided important insights into landscape processes
and climate; yet, due to their landscape position, they may not be preserved. In
this paper, Gastaldo et al. describe
mudclast aggregates in anabranching deposits of the Triassic Katberg Formation
of South Africa. Results reveal that the aggregates are heterogenous coarse
silt to fine sand and are not found as matrix or within in situ paleosols; instead, they are associated with reworked
carbonate nodules and mudchip rip-up clasts. These attributes are used to
interpret the former presence of PaleoVertisols across the Early Triassic Karoo
landscape. These data and recognition of mud aggregates is interpreted to
reinforce the idea that mudclast aggregates are characteristic of closed
depositional systems, including continental-interior basins.
Mudaggregates from the Katberg Formation, South Africa: additional evidence forEarly Triassic degradational landscapes
by Robert A. Gastaldo, Bryce A. Pludow, and Johann Neveling
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