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Answer all questions, all Multiple Choice
40 Questions, 50 minutes (1 minute per question, 10 minutes thinking time) 2.5 points each, this exam 100 total point.
Lecture 14: erosion; eolian; fluvial; grain size; erosion of clays, sands ,gravels, ripples and currents, abiogenic versus biogenic; how clasts move, grain size and distance from the continents, erosion, transport, deposition, suspended load, saltation, delta. Q. Which of the following describes the ease of sediment erosion, from least energy (ie fluid velocity) to most energy required
a) Boulders, pebbles, sand, clay
b) Boulders, clay, sand, pebbles
c) Sand, clay, pebbles, boulders
d) Clay, sand, pebbles, boulders
e) Erosional competence and fluid velocity are unrelated Q. In the diagram below, corresponding to ripples in a geological outcrop, the paleo‐current was moving in which direction?
Lecture 15: CCD or marine snowline, diatoms, coccoliths, radiolarians, foraminifera, manganese nodules, bloom, silica, carbonate, law of superposition, ocean sediments as paleoclimate records. Q. What is ‘the snowline’ of the ocean?
Lecture 16: beaches, barrier islands, pocket beaches, headlands, stacks, arches, caves, wave cut notch, longshore drift, groin, spit, berm, low tide, high tide, breaker zone, swash zone, backshore, foreshore, offshore, seasonality of wave energy, seasonality of sediment inputs, wave cut platform, marine terraces, supratidal, intertidal, subtidal, mudflats.
Q. Beaches most likely to form along coastlines with outcrops of resistant rock are called? ...