The Neogene Crotone basin in eastern Calabria contains extensive Messinian evaporite deposits, including thick gypsarenite and halite bodies. The halite deposit reaches a maximum thickness of ~300 m and in some areas forms relatively small diapirs piercing late Messinian and Pliocene sediments. Halite is strongly modified by folding and recrystallisation, but a few primary features are preserved. Four primary halite facies have been recognised: (a) banded halite consisting of folded white and dark bands deposited in a salt pan and/or saline mudflat; (b) white facies, massive halite containing anhydrite nodules, probably formed in a variably desiccating saline lake; (c) clear facies made up of a mosaic of large blocky halite crystals separated by mud, possibly the product of displacive halite growth in a saline mudflat; and (d) breccia facies, a product of dissolution of halite/mudstone/siltstone layers;Residual facies formed from halite dissolution are present as both, weld- and cap-rocks. Weld-rocks are thick, undeformed, and composed only of insoluble phases originally included in the salt, whereas cap-rocks are thin, strongly sheared and include clasts from the cover rocks.

Messinian halite and residual facies in the Crotone Basin (Calabria, Italy) / Lugli, Stefano; Dominici, R.; Barone, M.; Cavozzi, C.; Costa, E.. - STAMPA. - 285:(2007), pp. 155-164.

Messinian halite and residual facies in the Crotone Basin (Calabria, Italy)

LUGLI, Stefano;
2007

Abstract

The Neogene Crotone basin in eastern Calabria contains extensive Messinian evaporite deposits, including thick gypsarenite and halite bodies. The halite deposit reaches a maximum thickness of ~300 m and in some areas forms relatively small diapirs piercing late Messinian and Pliocene sediments. Halite is strongly modified by folding and recrystallisation, but a few primary features are preserved. Four primary halite facies have been recognised: (a) banded halite consisting of folded white and dark bands deposited in a salt pan and/or saline mudflat; (b) white facies, massive halite containing anhydrite nodules, probably formed in a variably desiccating saline lake; (c) clear facies made up of a mosaic of large blocky halite crystals separated by mud, possibly the product of displacive halite growth in a saline mudflat; and (d) breccia facies, a product of dissolution of halite/mudstone/siltstone layers;Residual facies formed from halite dissolution are present as both, weld- and cap-rocks. Weld-rocks are thick, undeformed, and composed only of insoluble phases originally included in the salt, whereas cap-rocks are thin, strongly sheared and include clasts from the cover rocks.
285
155
164
Lugli, Stefano; Dominici, R.; Barone, M.; Cavozzi, C.; Costa, E.
Messinian halite and residual facies in the Crotone Basin (Calabria, Italy) / Lugli, Stefano; Dominici, R.; Barone, M.; Cavozzi, C.; Costa, E.. - STAMPA. - 285:(2007), pp. 155-164.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/611418
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