TY - GEN
T1 - Evaporites in a rift setting - the alpine halitemudrock-polyhalite tectonite (Haselgebirge Fm., Eastern Alps, Austria)
AU - Leitner, C.
AU - Wiesmaier, S.
AU - Köster, M. H.
AU - Gilg, H. A.
AU - Neubauer, F.
N1 - Funding Information:
The authors are very pleased to acknowledge support in part by Battelle/U.S. Army Research Office (ARO) Research Triangle Park, North Carolina, under grant number DAAH04-96-C-0086, and by the Army High Performance Computing Research Center (AHPCRC) under the auspices of the Department of the Army, Army Research Laboratory (ARL) under contract number DAAD19-01-2-0014. The content does not necessarily reflect the position or the policy of the government, and no official endorsement should be inferred. Support in part by Dr. Andrew Mark and Dr. Raju Namburu of the IMT and CSM Computational Technical Activities and the ARL/MSRC facilities is also gratefully acknowledged. Special thanks are due to the CIS Directorate at the U.S. Army Research Laboratory (ARL), Aberdeen Proving Ground, Maryland. Other related support in form of computer grants from the Minnesota Supercomputer Institute (MSI), Minneapolis, Minnesota is also gratefully acknowledged.
PY - 2016
Y1 - 2016
N2 - The salt of the late Permian Haselgebirge Fm. exposes large proportions of mudrock. The mud was trapped in a basin without a connection to the open sea. The mudrock comprises earthquake structures. An enrichment of magnesium minerals (mainly magnesite and chlorite) and "deep water" anhydrite point to a residual brine basin. Pre-saturation happened in the surroundings represented by the gypsum/anhydrite deposits of the Haselgebirge Fm. The basin itself was probably narrow (tens to fifties of kilometers), but elongated (>1000 km). Igneous rocks with an intermediate chemistry are in sedimentological contact with the salt. A late syn-thinning stage is assumed for the deposition of the Haselgebirge Fm., due to low diapiric activity and the paleogeographic arrangement of the salt rocks in the context of the Northern Calcareous Alps. Heating was probably enhanced by the overlapping processes of orogenic collapse of the Variscan mountain belt and the formation of a rift. The first occurrence of polyhalite [K2Ca2Mg(SO4) 4.2H2O], which represents a mineralogic peak of the diagenetic history coincides with the final opening of the Meliata Ocean.
AB - The salt of the late Permian Haselgebirge Fm. exposes large proportions of mudrock. The mud was trapped in a basin without a connection to the open sea. The mudrock comprises earthquake structures. An enrichment of magnesium minerals (mainly magnesite and chlorite) and "deep water" anhydrite point to a residual brine basin. Pre-saturation happened in the surroundings represented by the gypsum/anhydrite deposits of the Haselgebirge Fm. The basin itself was probably narrow (tens to fifties of kilometers), but elongated (>1000 km). Igneous rocks with an intermediate chemistry are in sedimentological contact with the salt. A late syn-thinning stage is assumed for the deposition of the Haselgebirge Fm., due to low diapiric activity and the paleogeographic arrangement of the salt rocks in the context of the Northern Calcareous Alps. Heating was probably enhanced by the overlapping processes of orogenic collapse of the Variscan mountain belt and the formation of a rift. The first occurrence of polyhalite [K2Ca2Mg(SO4) 4.2H2O], which represents a mineralogic peak of the diagenetic history coincides with the final opening of the Meliata Ocean.
UR - https://www.scopus.com/pages/publications/85088774623
U2 - 10.3997/2214-4609.201601646
DO - 10.3997/2214-4609.201601646
M3 - Conference contribution
AN - SCOPUS:85088774623
T3 - 78th EAGE Conference and Exhibition 2016 - Workshop Programme
BT - 78th EAGE Conference and Exhibition 2016 - Workshop Programme
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 78th EAGE Conference and Exhibition 2016 - Workshops
Y2 - 30 May 2016 through 2 June 2016
ER -