Change search
ReferencesLink to record
Permanent link

Direct link
Cenozoic history of North Atlantic deep sea carbonate preservation
Stockholm University, Faculty of Science, Department of Geological Sciences.
2015 (English)Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Carbonate preservation in the oceans occurs at a depth called the carbonate compensation depth (CCD). The CCD is where the input rate of carbonate from the surface of the ocean is balanced by the dissolution rate. Factors controlling the CCD are the CO2 in the atmosphere, weathering, and productivity in the surface water, the depth of the lysocline and deep water currents (and their ocean circulation). Two previous studies have investigated the variation of the CCD through geologic time, one in the equatorial Pacific (Pälike et al., 2012) and the other compiled results from the Pacific, Atlantic and Indian Oceans (Van Andel, 1975). The project consisted of compiling a database of sediment lithologies for many more sites in the Atlantic since the compilation by Van Andel, 1975, and together with a subsidence model of the ocean crust the systematic variations of CCD could be investigated. The results show that the CCD varies both spatially and temporally in accordance with previous studies. The reconstruction of the CCD needs further analysis, and possibly data from the oldest drilling program, the Deep Sea Drilling Project (DSDP). One result that is very important is that this study includes a total of 91 sites in the Atlantic Ocean, far more than in any of the other two studies. Future work can build upon the already started database of sediment lithologies.

Place, publisher, year, edition, pages
2015. , 72 p.
Keyword [en]
Carbonate compensation depth, CCD, IODP, ODP, DSDP, Atlantic Ocean, subsidence modeling, Cenozoic, database of sediment lithologies, Google Earth
National Category
URN: urn:nbn:se:su:diva-117984OAI: diva2:818344
Available from: 2015-06-08 Created: 2015-06-08 Last updated: 2015-06-08Bibliographically approved

Open Access in DiVA

fulltext(4412 kB)67 downloads
File information
File name FULLTEXT01.pdfFile size 4412 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Department of Geological Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 67 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 186 hits
ReferencesLink to record
Permanent link

Direct link