Tracking provenance change during the late Miocene in the eastern Mediterranean using geochemical and environmental magnetic parameters

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dc.contributor.authorKohler, C.M.
dc.contributor.authorHeslop, David
dc.contributor.authorDekkers, Mark
dc.contributor.authorKrijgsman, Wout
dc.contributor.authorvan Hinsbergen, Douwe J.J.
dc.contributor.authorvon Dobeneck, T.
dc.date.accessioned2015-12-08T22:10:40Z
dc.date.issued2008
dc.date.updated2016-02-24T11:12:14Z
dc.description.abstractMarls of the Metochia section (Gavdos, Greece) have been analyzed using geochemistry, environmental magnetism, and diffuse reflectance spectrometry to study late Miocene paleoenvironmental changes in the eastern Mediterranean region. Fuzzy c-means cluster analysis (FCM), combined with nonlinear mapping (NLM), has been performed on a multiparameter data set to identify and characterize terrigenous source areas from North Africa and the Aegean margin. The parameters included in the FCM were selected on the basis of their univariate characteristics and their ability to trace input changes from regional source areas. The hard isothermal remanent magnetization (HIRM), calculated on a carbonate-free basis, and the Ti/Al ratio are used to distinguish aeolian dust and transport mechanisms of material originating from North Africa. Mass accumulation rates of Al and Ni are employed to represent the input of terrigenous material originating from the Aegean region. CaCO 3, calculated from Ca abundance, provides information concerning marine productivity and Mn/Al is used to trace reductive diagenesis in the marls. After performing the FCM and NLM analysis, a four-cluster solution has the greatest stability and describes paleoenvironmental changes in both the African and European source areas. The cluster solution clearly reveals the change from input dominated by terrigenous material in the lower parts of the Metochia section to marine input at the top of the section but also reveals changes in paleoenvironmental conditions in North Africa from arid to more humid conditions at ̃8.2 Ma.
dc.identifier.issn1525-2027
dc.identifier.urihttp://hdl.handle.net/1885/29443
dc.publisherAmerican Geophysical Union
dc.sourceGeochemistry, Geophysics, Geosystems. G3
dc.subjectKeywords: Eastern mediterranean; Fuzzy c-means cluster analysis; Geochemical parameters; Paleoenvironment; Rock magnetism
dc.titleTracking provenance change during the late Miocene in the eastern Mediterranean using geochemical and environmental magnetic parameters
dc.typeJournal article
local.bibliographicCitation.issue12
local.bibliographicCitation.lastpage14
local.bibliographicCitation.startpage1
local.contributor.affiliationKohler, C.M., University of Bremen
local.contributor.affiliationHeslop, David, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationDekkers, Mark, University of Utrecht
local.contributor.affiliationKrijgsman, Wout, University of Utrecht
local.contributor.affiliationvan Hinsbergen, Douwe J.J., University of Utrecht
local.contributor.affiliationvon Dobeneck, T., University of Bremen
local.contributor.authoremailu4919989@anu.edu.au
local.contributor.authoruidHeslop, David, u4919989
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor040406 - Magnetism and Palaeomagnetism
local.identifier.absfor040305 - Marine Geoscience
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
local.identifier.ariespublicationu4598381xPUB65
local.identifier.citationvolume9
local.identifier.doi10.1029/2008GC002127
local.identifier.scopusID2-s2.0-70349512387
local.identifier.thomsonID000261881400001
local.identifier.uidSubmittedByu4598381
local.type.statusPublished Version

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