ESCI 401 Lecture Notes - Lecture 17: Pressure Solution, Protolith, Ripple Marks
13 Oct 2017
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Why does bedding form, a bed is a single-layer of sediment or sedimentary rock with an obvious top or bottom. i. Sequence of beds (stratification: bedding/strata, why are beds formed, through change: a. b. c. d. In sediment source: give examples of two sedimentary structures and explain what they indicate about the environment they were formed in, cross-bedding, ripple marks. Inclined beds deposited by wind or water. we can see difference between main bedding and cross-bedding. If the wind flows both ways symmetric. If the wind flows only in one direction asymmetric. Created by wind or water ii: rounded dunes, steep slopes. 1: mud cracks i. e. : sand dunes iii. i, bioturbation. Indicates that a certain piece of sediment was at the top, and the dried out with very fine grains - tidal-flat or swamp environments. In what depth range does metamorphism usually occur? i. ii.
