Clastic huntite in upper Neogene formations of the Kozani basin, Macedonia, Northern Greece



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Calvo Sorando, José Pedro and Stamatakis, Michael G. and Magganas, Andreas C. (1995) Clastic huntite in upper Neogene formations of the Kozani basin, Macedonia, Northern Greece. Journal of sedimentary research, A65 (4). pp. 627-632. ISSN 1527-1404

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An unusual carbonate mineral, huntite (Mg3Ca(CO3)4) , is present in Upper Neogene lacustrine formations of the Kozaai Basin, Northern Greece. This carbonate, either pure or mixed with variable proportions of bydromagnesite and magnesite, forms extensive deposits that accumulated in ponds on a lake-margin carbonate flat. Although labile and metastabl¢, huntite also is the main detrital component of fluvial.dominated delta sequences in some parts of the basin. Clastie huntite is present mainly in foresets, trough cross-stratified units, and channel forms in terrigenous lithofacies towards the basal part of deltaic assemblages. Detachment of fragments from cohesive huntite pond deposits may have been favored by expansion through wetting rather than by desiccation and further contraction of the chemical sediment. This first documented occurrence of elastic huntite places some uncertainties on the presumed chemical and mechanical instability of huntite under natural conditions.

Item Type:Article
Uncontrolled Keywords:Cenozoic; Greek Macedonia; Carbonates
Subjects:Sciences > Geology > Petrology
ID Code:58692
Deposited On:24 Jan 2020 08:52
Last Modified:24 Jan 2020 08:52

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