Rare earth elements of ROV sample GeoB12338-2 from the Makran accretionary complex, supplement to: Himmler, Tobias; Bach, Wolfgang; Bohrmann, Gerhard; Peckmann, Jörn Ludwig (2010): Rare earth elements in authigenic methane-seep carbonates as tracers for fluid composition during early diagenesis. Chemical Geology, 277(1-2), 126-136

Tobias Himmler, Wolfgang Bach, Gerhard Bohrmann & Jörn Ludwig Peckmann
Authigenic carbonates forming at an active methane-seep on the Makran accretionary prism mainly consist of aragonite in the form of microcrystalline, cryptocrystalline, and botryoidal phases. The d13Ccarbonate values are very negative (-49.0 to -44.0 per mill V-PDB), agreeing with microbial methane as dominant carbon source. The d18Ocarbonate values are exclusively positive (+ 3.0 to + 4.5 per mill V-PDB) and indicate precipitation in equilibrium with seawater at bottom water temperatures. The content of rare earth...
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