Cyclic changes in the sedimentary environment during the last interglacial/glacial cycle; coastal Jameson Land, East Greenland
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文摘
Raised successions of sediments from the last interglacial/glacial period along coastal Jameson Land, East Greenland, comprise a variety of sedimentary facies that reflect cyclic changes of the sedimentary environment. These changes are controlled by the fluctuations of relative sea-level and glacier advances. Each of the sedimentary cycles starts with till deposition succeeded by marine mud sedimentation, subaerial erosion, deltaic and coastal sedimentation. Sea-level changes alters from falling to rising during each sedimentary cycle and indicates that local East Greenland glacier fluctuations generally lead the global eustatic cycles. Most of the deposits cover isotope stage 5, and successive higher sea-level stands during each sedimentary cycle indicate a net growth of the Greenland ice sheet during the Early Weichselian.