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Paleoceanography - Sedimentology


Introduction

Ocean margins consist of both siliciclastic and carbonate sediments which archive the history of ocean margin development and climatic change. Our present day understanding of the development of ocean margins comes from both geophysical and geological data. The work groups´ research activities include carbonate and siliciclastic sedimentology, paleoceanography, palaeoclimatology and micropalaeontology (planktonic foraminifera). Through geochemical, mineralogical and sedimentological investigations, we reconstruct marine sedimentation processes and environmental conditions of the past oceans in response to various aspects of Quaternary climatic change. Most of the carbonate sediments studied are core samples obtained through deep-sea drilling during research cruises. We also carry out field work on fossil carbonate rocks.


Describing ODP Cores from Antarctica (ODP Leg 178):


Research Group

NamePhoneFaxe-mail
Rendle-Bühring, Rebecca+49  421 218 - 65880+49  421 218 - 65515e-mail address
Schwarz, Johanna+49  421 218 - 65884e-mail address
Steinke, Stephan+49  421 218 - 65882e-mail address

Research Assistant
Nicole Meyer

Working Areas

High-carbonate production regions - where recent, Holocene, Pleistocene and Pliocene carbonate-rich sediments from platform complexes, continental margins and pelagic environments are deposited. Main working areas include the tropical-subtropical regions of the Bahamas-Caribbean and Atlantic Ocean (NW Africa). Other working areas include the South China Sea (SE Taiwan).


Tropical Corals of the Great Barrier Reef, E. Australia:


Methods

A multi-proxy approach is applied incorporating methods in isotope geochemistry (oxygen and carbon isotopes), inorganic geochemistry (x-ray diffraction), granulometry (Atterberg, SediGraph), electron and light microscopy, carbonate microfacies analyses and micropaleontology investigations.


Microscope Photo of Periplatform Sands (250-500 µm) from the Bahamas (ODP-Leg 166):


Laboratory Facilities

A SediGraph Laboratory for Grain-size Analyses
A Wet-Laboratory and Microscope Laboratory for Sample Preparation
(Incl. binocular microscopes, sonic sifter, sonic bath, oven)


SediGraphs:


 
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