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26 Cards in this Set
- Front
- Back
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Catastrophism
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The belief that a worldwide flood swept away all the inhabitants of the earth and created the rock layers we see today.
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What three beliefs were there about catastrophism?
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There was one flood which created the rock layers we see/ there were multiple floods/ the were numerous floods, the days of Noah were the last
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What is James Hutton's famous quote?
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The present is the key to the past
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Uniformitarianism states:
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The same processes that shaped the universe in the past are the same that shape it today.
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Who are the two important men involved with Uniformitarianism?
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James Hutton and Charles Lyell (who influenced Charles Darwin)
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Charles Lyell is known for implementing...
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Cumulative slow change produced by natural processes operating at relatively slow rates.
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Modern geological uniformitarianism contains what two topics?
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Scientific Uniformitarianism and Neo-Catastrophism
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Scientific Uniformitarianism
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invariance of physical laws of universe/
Physical processes unchanged |
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Neo-catastrophism
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Catastrophes still do happen
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What are four types of catastrophe?
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Volcanic eruptions,sudden burials, large regional floods, asteroid impact
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What are the three mediums of transport for sediment?
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Water, Wind, and Ice
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What are the six examples of sediment moving environments?
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Rivers(Fluvial), Deserts, Warm shallow marines, Glacial, Deep Sea Abyss, Lakes(Lacustrine)
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What are the signs that show you a rock is from a fluvial environment?
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channels, mud cracks, raindrop impressions, ripple marks, tool marks, terrestrial and freshwater fossils, gravel, sand, and silt deposits, muds and coal
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what are the two kinds of river sediments?
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clay-sized (mud), sand and gravel
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What are the terrestrial flora and fauna?
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Leaves, petrified wood, lizards, reptiles
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What are some of the freshwater organisms?
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fish, amphibians
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Shale and coal could be found from what environment
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Swamps in floodplain or river
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Windblown grains have what kind of surface
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frosted
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Explain dune motion.
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Wind blows up the dune, Grains roll down the surface.
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the sedimentary rock result of dune motion is...
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cross-bedding
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What are the tell tale signs of dune sedimentary rocks
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frosted grains, well sorted grains, cross-bedding, terrestrial trace fossils, evaporites
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sedimentary rocks or minerals form by evaporation of solution enriched in minerals
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evaporites
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Namib Desert, Africa has many
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evaporation deposits
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lake sediments are characterized by
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couplets of light and dark laminations
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light sediment signifies what season? And dark organic matter?
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summer; fall and winter
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tell tale signs youre seeing lacustrine environment
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fine grained laminated mud, mudcracks, raindrop impressions, freshwater fossil organisms, terrestrial fossil animals and vegetation
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