Ocean chemistry and deep-sea sediments
Ocean chemistry and deep-sea sediments
Ocean chemistry and deep-sea sediments
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Sediment drifts• A major step in underst<strong>and</strong>ing the magnitude of bottom water currents wasthe discovery of large, elongated sediment ridges – sediment drifts.• Sediment drifts are elongated parallel to bottom currents <strong>and</strong> are often mantledwith sediment waves.• Sediment drifts can be hundred of kilometres long <strong>and</strong> tens of kilometres wide• Sedimentation rates can be high approx. 12 cm/ka.• Sediment waves can have wavelength of several km <strong>and</strong>amplitudes of a few tens of metres
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