Controversies around the Messinian salinity crisis (MSC) arebecause of the difficulties in establishing genetic and stratigraphicrelationships between its deep and shallow-waterrecord. Actually, the Sicilian foreland basin shows both shallowand deep-water Messinian records, thus offering the chance toreconstruct comprehensive MSC scenarios. The Lower Gypsumof Sicily comprises primary and resedimented evaporitesseparated in space and time by the intra-Messinian unconformity.A composite unit including halite, resedimented gypsumand Calcare di Base accumulated between 5.6 and 5.55 Ma inthe main depocentres; it records the acme of the MessinianSalinity Crisis during a tectonic phase coupled with sea-levelfalls at glacials TG14-TG12. These deposits fully post-dateprimary gypsum, which precipitated in shallow-water wedgetopand foreland ramp basins between 5.96 and 5.6 Ma. Thisnew stratigraphic framework results in a three-stage MSCscenario characterized by different primary evaporite associations:selenite in the first and third stages, carbonate, halite andpotash salt in the second one associated with hybrid resedimentedevaporites.

The Messinian Sicilian stratigraphy revisited: new insights for the Messinian salinity crisis / Roveri, M; Lugli, Stefano; Manzi, V; Schreiber, B. C.. - In: TERRA NOVA. - ISSN 0954-4879. - STAMPA. - 20:6(2008), pp. 483-488. [10.1111/j.1365-3121.2008.00842.x]

The Messinian Sicilian stratigraphy revisited: new insights for the Messinian salinity crisis

LUGLI, Stefano;
2008

Abstract

Controversies around the Messinian salinity crisis (MSC) arebecause of the difficulties in establishing genetic and stratigraphicrelationships between its deep and shallow-waterrecord. Actually, the Sicilian foreland basin shows both shallowand deep-water Messinian records, thus offering the chance toreconstruct comprehensive MSC scenarios. The Lower Gypsumof Sicily comprises primary and resedimented evaporitesseparated in space and time by the intra-Messinian unconformity.A composite unit including halite, resedimented gypsumand Calcare di Base accumulated between 5.6 and 5.55 Ma inthe main depocentres; it records the acme of the MessinianSalinity Crisis during a tectonic phase coupled with sea-levelfalls at glacials TG14-TG12. These deposits fully post-dateprimary gypsum, which precipitated in shallow-water wedgetopand foreland ramp basins between 5.96 and 5.6 Ma. Thisnew stratigraphic framework results in a three-stage MSCscenario characterized by different primary evaporite associations:selenite in the first and third stages, carbonate, halite andpotash salt in the second one associated with hybrid resedimentedevaporites.
2008
20
6
483
488
The Messinian Sicilian stratigraphy revisited: new insights for the Messinian salinity crisis / Roveri, M; Lugli, Stefano; Manzi, V; Schreiber, B. C.. - In: TERRA NOVA. - ISSN 0954-4879. - STAMPA. - 20:6(2008), pp. 483-488. [10.1111/j.1365-3121.2008.00842.x]
Roveri, M; Lugli, Stefano; Manzi, V; Schreiber, B. C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/612024
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