Skip navigation
SuUB logo
DSpace logo

  • Home
  • Institutions
    • University of Bremen
    • City University of Applied Sciences
    • Bremerhaven University of Applied Sciences
  • Sign on to:
    • My Media
    • Receive email
      updates
    • Edit Account details

Citation link: http://nbn-resolving.de/urn:nbn:de:gbv:46-00102202-11
00102202-1.pdf
OpenAccess
 
copyright

Pore water profiles and early diagenetic signals in marine sediments as indicators for (paleo-)environmental and depositional conditions


File Description SizeFormat
00102202-1.pdf14.79 MBAdobe PDFView/Open
Other Titles: Porenwasserprofile und frühdiagenetische Signale in marinen Sedimenten als Anzeiger für (Paläo-)Umwelt- und Ablagerungsbedingungen
Authors: Henkel, Susann 
Supervisor: Kasten, Sabine  
1. Expert: Kasten, Sabine  
Experts: De Lange, Gert 
Abstract: 
The aim of the thesis was to decipher if and how diagenetic signals and pore profiles can be used to trace sub-recent environmental and depositional changes. The topic involves the question of how to differentiate between initial and secondary signals in marine sediments. The first part of the thesis deals with the diagenetic cycling of barium (Ba) in shallow sediment depths in the Black Sea. The results are discussed with respect to the Holocene flooding of the basin by seawater and with respect to the applicability of Ba as productivity proxy in sediments underlying a mainly anoxic water column. In a second study, sediment cores from the continental margin off Uruguay and Argentina were investigated. The respective chapters highlight the usefulness of pore water profiles for identifying and dating recent slope failure. The third main topic concerns the diagenetic cycling of phosphorus (P). Off Uruguay and Argentina, P is liberated into the pore water from the deep sediments. The release of P is linked to the reduction of iron oxides and is, thus, a consequence of high sedimentation rates.
Keywords: geochemistry; marine sediments; early diagenesis; geochemical modeling; redox cycling; barium; barite; phosphorus; phosphate; pore water profiles; Black Sea; continental margin off Uruguay; sulfate; methane; submarine mass-movements
Issue Date: 12-Aug-2011
Type: Dissertation
URN: urn:nbn:de:gbv:46-00102202-11
Institution: Universität Bremen 
Faculty: FB5 Geowissenschaften 
Appears in Collections:Dissertationen

  

Page view(s)

145
checked on May 29, 2022

Download(s)

39
checked on May 29, 2022

Google ScholarTM

Check


Items in Media are protected by copyright, with all rights reserved, unless otherwise indicated.

Legal notice -Feedback -Data privacy
Media - Extension maintained and optimized by Logo 4SCIENCE