Dipl.-Geol. Tobias Himmler

CV

since October 2007 postgraduate student at the University of Bremen
2002-2007 Student (Geology/Palaeontology) at the Friedrich-Alexander-University Erlangen-Nürnberg

Haas A, Little CTS, Sahling H, Bohrmann G, Himmler T, Peckmann J (2009)
Mineralization of vestimentiferan tubes at methane seeps on the Congo deep-sea fan. Deep-Sea Research (I) 56, 283-293.
Birgel D, Himmler T, Freiwald A, Peckmann J (2008)
A new constraint on the antiquity of anaerobic oxidation of methane: Late Pennsylvanian seep limestones from southern Namibia. Geology 36, 543-546.
Himmler T, Freiwald A, Stollhofen H, Peckmann J (2008)
Late Carboniferous hydrocarbon-seep carbonates from the glaciomarine Dwyka Group, southern Namibia. Palaeogeography, Palaeoclimatology, Palaeoecology 257, 185-197.

Late Carboniferous hydrocarbon-seep carbonates from the Dwyka Group (southern Namibia)

Dwyka Group sediments in southern Namibia comprise mainly glaciogenic deposits (diamictites, tillites) and intercalated marine mudstone units (Ganigobis- and Hardap Shale Memeber). Columnar to lenticular autochthonous limestones are embedded within the upper part of the Ganigobis Shale Member. The limestones are the product of microbial induced carbonate authigenesis via anaerobic oxidation of methane (AOM). AOM was mediated by methanotrophic archaea and sulphate-reducing bacteria in the same manner as it is at modern marine methane seeps. The limestones contain a high-abundance faunal assemblage of tubular structures probably related to modern seep-dwelling vestimentiferan tube worms.

Geological map (1:10000) of the Los Barrios de Luna area, Cantabrian Mountains (northern Spain)

This work derscribes the geological structures of the region south-east of the Luna dam in the south-western Cantabrian Mountains. The mapped area covers mainly the southern limb of the Alba syncline within the Cantabrian Zone and partly rocks of the adjacent West Asturian Leonese Zone (Narcea anticline). The lithological inventory contains slightly metamorphosed shales of the Precambrian Mora Formation, unconformabely overlain by a non-metamorphic mixed siliciclastic-carbonate succession of Cambrian (Herreria FM) to Upper Devonian (Fueyo FM) deposits. Several NNE-SSW striking strike-slip-faults as well as two major thrusts are developed. The major structural element in the mapped area is representet by the Alba syncline with its ENE-WSW striking fold axis.