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New Observations on the Pleistocene Evaporites of Montallegro, Sicily and a Modern Analog
B. Charlotte Schreiber (2), David J. J. Kinsman
The Montallegro Formation (Pleistocene) of the southern part of Sicily, contains several gypsum-bearing zones. The gypsum deposition appears to be the result of reprecipitation of dissolved adjacent, Messinian (Late Miocene) deposits. The Montallegro gypsum occurs as laminar, crystalline gypsum, disseminated acicular gypsum in marls and also as gypsum 'trees.' Associated with the gypsum-bearing marls are nodular and laminar native sulfur deposits. These sulfur deposits have formed probably syndepositionally with the emplacement of the gypsiferous marls, as the result of biological activity. Analogies are drawn between many of the features described from the Montallegro Formation and some solar salt pan evaporites from California.
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