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48 Cards in this Set
- Front
- Back
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What creates rivers
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runoff
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Infiltration
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Water soaks into ground moving to sea level
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5 oceans
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Pacific Atlantic Indian Arctic Antarctic-southern
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Currents are driven by
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Winds temperature and salinity
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avg amount of salt
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34-36 g/l
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What determines the shape of the ocean floor
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Tectonics and sediment
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What is considered the continental margin
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50-100 miles away
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Active margin
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Subduction
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Trench
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Subduction zone
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Terrigeneous sediment
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Sediment on sea floor
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Petagic Sediment
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Settles slowly through the ocean water
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Coast
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All land near sea including beach and immediate inland
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Sources of sediment
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erosion of local rock and rivers
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Tides
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Moon gravity
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Waves are from
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wind, bigger the distance the bigger the waves
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suff
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waves breaking
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Longshore current
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Waves hitting the coast at an angle pushing sediment
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Longshore drift
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Movement of sand
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Rip current
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Meeting longshore currents
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Erosional coasts
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Active and rocky
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Depositional coasts
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Passive sandy and low lying
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Estuary
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Drowned river mouth with not enough sediment
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Emergent coasts
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elevated by tectonics or high sediment supply
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Stream
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A body of running water confined to a channel
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Headwaters
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Water near source
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Mouth/ delta
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Stream enters sea
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Suspended load
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mud in water floating
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Bedload sediment
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Bouncing off the bottom
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What is considered freshwater
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1,000 mg/l
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saltwater
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35000 mg/l
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flow velocity is fastest at
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6/10 depths
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River discharge
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volume of water leaving
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Meandering stream
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curving
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Point bars
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Sediment deposited on inner parts of curves
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Cut banks
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water erodes outer parts of curves
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flood plain
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broad strips of land built up by sediment
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Mississippi river drains how many states
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31
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Perosity
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Open space in a rock
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Permiability
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Interconnectedness pf pore space
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Coil vs oil
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coal is from continents oil is from oceans
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Source rock
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where oil is made
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Resevoir rock
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where it is stored
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oil window
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2-4km under surface with appropriate pressure and temprature
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Microorganisms->
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Kerogen, oil, gas
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oil fields
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area of pools of natural gas removed by wells
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oil reserves
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will last 30-40 years
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Caves are
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Dissolved limestone
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Karst topography
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Caves, Sinkholes
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