GEOL 212 Study Guide - Quiz Guide: Guilin, Sediment Transport, Mass Wasting
26 Dec 2017
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In what environment they were deposited: each depositional environment has characteristic fingerprints. E. g: aeolian environments are marked by large cross-beds that preserve the ancient slip-faces of sand dunes, ancient fluvial environments also preserve much smaller cross beds. Evorites in dry lake bed: the beds of ephemeral lakes are preserved as crusts of minerals precipitated from solution. Limestone etched by fresh water: diagenesis: the physical changes that have occurred in the depositional environment since deposition, including the dissolution of minerals. At right: limestone etched and dissolved by fresh water on the li river near guilin, china. (note, in some landscapes, dissolution releases lots of ions into solution, leaving karstlandscapes full of caves and remanent towers. Key concepts and vocabulary: sedimentary rock, sediment, weathering, transport, deposition, cementation, mass wasting, fluvial transport, shoreline transport, glacial transport, aeolian transport, sorting, rounding, cross beds, diagenesis, karst, limestone coal. Additional reading: stephen grasby, bernadette proemse, and benoit beauchamp.
