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Article

New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy)

by
Ilaria Isola
1,2,*,
Francesco Mazzarini
1,
Giancarlo Molli
3,
Leonardo Piccini
4,
Elena Zanella
5,
Giovanni Zanchetta
3,
Russell Drysdale
6,
John Hellstrom
7,
Jon Woodhead
7,
Adriano Roncioni
8,
Flavio Milazzo
9,
Diego Pieruccioni
10 and
Eleonora Regattieri
2
1
Istituto Nazionale di Geofisica e Vulcanologia Sezione di Pisa, 56125 Pisa, Italy
2
Istituto Geoscienze e Georisorse CNR, 56127 Pisa, Italy
3
Dipartimento di Scienze della Terra, University of Pisa, 56126 Pisa, Italy
4
Department of Earth Science, University of Florence, 50121 Firenze, Italy
5
Dipartimento di Scienze della Terra, University of Torino, 10125 Torino, Italy
6
School of Geography, The University of Melbourne, 3053 Melbourne, Australia
7
School of Earth Sciences, The University of Melbourne, 3053 Melbourne, Australia
8
Gruppo Speleologico Lucchese, 55100 Lucca, Italy
9
Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale, University of Parma, 43124 Parma, Italy
10
Dipartimento per il Servizio Geologico d’Italia, ISPRA, 00144 Roma, Italy
*
Author to whom correspondence should be addressed.
Geosciences 2021, 11(2), 65; https://doi.org/10.3390/geosciences11020065
Submission received: 18 December 2020 / Revised: 22 January 2021 / Accepted: 28 January 2021 / Published: 2 February 2021
(This article belongs to the Special Issue The Apennines: Tectonics, Sedimentation, and Magmatism from the Palaeozoic to the Present)
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Abstract

A sedimentary sequence of fluvial deposits preserved in the Corchia Cave (Alpi Apuane) provides new chronological constraints for the evolution of the cave system and the timing and rate of uplift of this sector of the Alpi Apuane since the late Pliocene. Supported by magnetostratigraphic analysis performed on fine-grained fluvial deposits, and by radiometric dating of speleothems, we suggest that the deposition of fluvial sediments occurred between ~1.6–1.2 Ma. This implies that the host volume of rock was already located close to the local base level, adding key information about the recent tectonic evolution of the Alpi Apuane. A few before ~1 Ma, an erosive phase occurred due to the base-level lowering, followed by continuous speleothem deposition since at least 0.97 Ma. From that time, Monte Corchia uplifted at a maximum rate of ~0.5 mm/year, which is consistent with isostatic uplift mainly driven by erosional unloading. The petrographical study of the fluvial deposits highlights the presence of material derived from the erosion of rocks that today are absent in the cave’s catchment area, suggesting a different surface morphology during the Early Pleistocene. This study highlights the potential of cave sediments as archives for reconstructing the uplift history of mountain ranges.
Keywords: geochronology; karst; magnetostratigraphy; Corchia Cave; Alpi Apuane geochronology; karst; magnetostratigraphy; Corchia Cave; Alpi Apuane

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MDPI and ACS Style

Isola, I.; Mazzarini, F.; Molli, G.; Piccini, L.; Zanella, E.; Zanchetta, G.; Drysdale, R.; Hellstrom, J.; Woodhead, J.; Roncioni, A.; et al. New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy). Geosciences 2021, 11, 65. https://doi.org/10.3390/geosciences11020065

AMA Style

Isola I, Mazzarini F, Molli G, Piccini L, Zanella E, Zanchetta G, Drysdale R, Hellstrom J, Woodhead J, Roncioni A, et al. New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy). Geosciences. 2021; 11(2):65. https://doi.org/10.3390/geosciences11020065

Chicago/Turabian Style

Isola, Ilaria, Francesco Mazzarini, Giancarlo Molli, Leonardo Piccini, Elena Zanella, Giovanni Zanchetta, Russell Drysdale, John Hellstrom, Jon Woodhead, Adriano Roncioni, and et al. 2021. "New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy)" Geosciences 11, no. 2: 65. https://doi.org/10.3390/geosciences11020065

APA Style

Isola, I., Mazzarini, F., Molli, G., Piccini, L., Zanella, E., Zanchetta, G., Drysdale, R., Hellstrom, J., Woodhead, J., Roncioni, A., Milazzo, F., Pieruccioni, D., & Regattieri, E. (2021). New Chronological Constraints from Hypogean Deposits for Late Pliocene to Recent Morphotectonic History of the Alpi Apuane (NW Tuscany, Italy). Geosciences, 11(2), 65. https://doi.org/10.3390/geosciences11020065

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