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Article

Tectonic Influence on Speleogenesis of Sea Caves on Biševo Island (UNESCO Global Geopark Vis Archipelago, Adriatic Sea, Croatia)

Croatian Geological Survey, Milana Sachsa 2, 10000 Zagreb, Croatia
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Author to whom correspondence should be addressed.
Academic Editors: Karoly Nemeth and Jesus Martinez-Frias
Geosciences 2021, 11(8), 341; https://doi.org/10.3390/geosciences11080341
Received: 11 June 2021 / Revised: 27 July 2021 / Accepted: 29 July 2021 / Published: 13 August 2021
(This article belongs to the Special Issue From Geoheritage to Geotourism—New Advances and Emerging Challenges)
A geological and speleological investigation was conducted in the famous Blue Cave (Modra špilja) and the Monk Seal Cave (Medvidina špilja) on Biševo Island (Croatia) to promote the island’s geoheritage through the new Visitor Centre. The island is mainly composed of Cretaceous to Paleogene neritic carbonates, which form the bedrock, whereas parts of the island are covered with thin Quaternary sediments. The caves are of small dimensions and a simple layout, composed of the main channel and few shorter side channels, all positioned in the tidal zone. Thus, the caves are semi-submerged sea caves located along the coastline. The Blue Cave and the Monk Seal Cave developed within the bedrock limestones and dolostones, respectively, within a zone of left-lateral NNE–SSW striking strike-slip faults that belong to the Biševo fault system. Conjugated discontinuities within the carbonate bedrock indicate a specific strike-slip tectonic regime. Additionally, the host rocks were probably also deformed and fractured during the rise of salt diapirs that characterise this part of the Adriatic foreland. Tectonic and bedding discontinuities form the fragments of the host rock, that combined with the impacts of the strong southern waves, significantly influenced the genesis of the caves. View Full-Text
Keywords: speleogenesis; Biševo Island; UNESCO Global Geopark Vis Archipelago; Blue Cave; Monk Seal Cave speleogenesis; Biševo Island; UNESCO Global Geopark Vis Archipelago; Blue Cave; Monk Seal Cave
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MDPI and ACS Style

Mišur, I.; Budić, M.; Kurečić, T.; Korbar, T. Tectonic Influence on Speleogenesis of Sea Caves on Biševo Island (UNESCO Global Geopark Vis Archipelago, Adriatic Sea, Croatia). Geosciences 2021, 11, 341. https://doi.org/10.3390/geosciences11080341

AMA Style

Mišur I, Budić M, Kurečić T, Korbar T. Tectonic Influence on Speleogenesis of Sea Caves on Biševo Island (UNESCO Global Geopark Vis Archipelago, Adriatic Sea, Croatia). Geosciences. 2021; 11(8):341. https://doi.org/10.3390/geosciences11080341

Chicago/Turabian Style

Mišur, Ivan, Marko Budić, Tomislav Kurečić, and Tvrtko Korbar. 2021. "Tectonic Influence on Speleogenesis of Sea Caves on Biševo Island (UNESCO Global Geopark Vis Archipelago, Adriatic Sea, Croatia)" Geosciences 11, no. 8: 341. https://doi.org/10.3390/geosciences11080341

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