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Paleoecology Of Late Quaternary Molluscan-Ostracod Assemblages From The Norwood Site, Southeastern Minnesota, Kevin L. Malmquist
Paleoecology Of Late Quaternary Molluscan-Ostracod Assemblages From The Norwood Site, Southeastern Minnesota, Kevin L. Malmquist
Theses and Dissertations
Well-preserved fossils, including mollusks, ostracods, beetles and plant remains were extracted from sediments at the Norwood Site in southeastern Minnesota during July, 1977. Stratigraphic units, in ascending order, were: (1) sandy claystone, (2) clayey siltstone, (3) sandy siltstone, and (4) laminated peat. Unit 1 was interpreted to be till or sediment that slumped or flowed into the lake. Unit 2 and the lower part of unit 3 were interpreted to be lacustrine sediments. The upper part of unit 3 was interpreted to be a shoreline deposit. Unit 4 was interpreted to be a terrestrial or marginal lacustrine deposit. Total thickness …