What is it about?
A peculiar type of marine rocky outcrops is generated under temperate conditions through the cementation of carbonate and siliciclastic sediments on the northwestern Adriatic shelf. The lithification process results in the genesis of punctiform outcrops (tegnùe) that serve as a substrate to substantial coralligenous epibenthic growth. A genetic mechanism, implying precipitation of carbonate cement in the marine phreatic zone, has been hypothesized for the rocky outcrops off the coast of Chioggia (south of Venice). Petrographic analyses of these rocky outcrops allowed distinguishing three (3) main lithofacies: 1) biofouled sandstone blocks; 2) cross-stratified slabs and 3) bioclastic carbonates.
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Why is it important?
The multidisciplinary approach to the study of tegnùe bio-concretionned outcrops provided new insights into the diagenetic processes that affect recent littoral deposits in the northwestern Adriatic Sea
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This page is a summary of: Petrographic and geochemical characterization of the early formative stages of Northern Adriatic shelf rocky buildups, Marine and Petroleum Geology, March 2018, Elsevier,
DOI: 10.1016/j.marpetgeo.2018.01.012.
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