Portal de Periódicos da CAPES

Interplay between tectonics and glacio-eustasy: Pleistocene succession of the Crotone basin, Calabria (southern Italy)

2002; Geological Society of America; Volume: 114; Issue: 10 Linguagem: Inglês

10.1130/0016-7606(2002)114 2.0.co;2

1943-2674

F. Massari, D. Rio, M. Sgavetti, Giacomo Prosser, A D'Alessandro, Alessandra Asioli, Luca Capraro, Eliana Fornaciari, Fabio Tateo,

Geological and Geochemical Analysis

Research Article| October 01, 2002 Interplay between tectonics and glacio-eustasy: Pleistocene succession of the Crotone basin, Calabria (southern Italy) F. Massari; F. Massari 1Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy Search for other works by this author on: GSW Google Scholar D. Rio; D. Rio 1Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy Search for other works by this author on: GSW Google Scholar M. Sgavetti; M. Sgavetti 2Dipartimento di Scienze della Terra, Università di Parma, Viale delle Scienze, 78, 43100 Parma, Italy Search for other works by this author on: GSW Google Scholar G. Prosser; G. Prosser 3Dipartimento di Scienze Geologiche Università della Basilicata Campus Macchia Romana, 85100 Potenza, Italy Search for other works by this author on: GSW Google Scholar A. D'Alessandro; A. D'Alessandro 4Dipartimento di Geologia e Geofisica, Università di Bari, "Campus universitario," Via Orabona, 4, 70125 Bari, Italy Search for other works by this author on: GSW Google Scholar A. Asioli; A. Asioli 5Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy Search for other works by this author on: GSW Google Scholar L. Capraro; L. Capraro 5Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy Search for other works by this author on: GSW Google Scholar E. Fornaciari; E. Fornaciari 5Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy Search for other works by this author on: GSW Google Scholar F. Tateo F. Tateo 6Istituto di Ricerca sulle Argille, Consiglio Nazionale delle Ricerche, Via San Loja, 85050 Tito Scalo, Potenza, Italy Search for other works by this author on: GSW Google Scholar Author and Article Information F. Massari 1Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy D. Rio 1Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy M. Sgavetti 2Dipartimento di Scienze della Terra, Università di Parma, Viale delle Scienze, 78, 43100 Parma, Italy G. Prosser 3Dipartimento di Scienze Geologiche Università della Basilicata Campus Macchia Romana, 85100 Potenza, Italy A. D'Alessandro 4Dipartimento di Geologia e Geofisica, Università di Bari, "Campus universitario," Via Orabona, 4, 70125 Bari, Italy A. Asioli 5Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy L. Capraro 5Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy E. Fornaciari 5Dipartimento di Geologia, Paleontologia e Geofisica, Università di Padova, Via Giotto 1, 35137 Padova, Italy F. Tateo 6Istituto di Ricerca sulle Argille, Consiglio Nazionale delle Ricerche, Via San Loja, 85050 Tito Scalo, Potenza, Italy Publisher: Geological Society of America Received: 23 Apr 2001 Revision Received: 06 Mar 2002 Accepted: 29 Apr 2002 First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (2002) 114 (10): 1183–1209. https://doi.org/10.1130/0016-7606(2002)114 2.0.CO;2 Article history Received: 23 Apr 2001 Revision Received: 06 Mar 2002 Accepted: 29 Apr 2002 First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation F. Massari, D. Rio, M. Sgavetti, G. Prosser, A. D'Alessandro, A. Asioli, L. Capraro, E. Fornaciari, F. Tateo; Interplay between tectonics and glacio-eustasy: Pleistocene succession of the Crotone basin, Calabria (southern Italy). GSA Bulletin 2002;; 114 (10): 1183–1209. doi: https://doi.org/10.1130/0016-7606(2002)114 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract On a global scale, the Crotone basin preserves one of the best-developed and most complete Pleistocene marine records available in outcrop, as important as those in California, New Zealand, and Japan. A deformed, markedly cyclothemic, lower to middle Pleistocene succession is present in the territory of San Mauro Marchesato (Crotone area, southern Italy), showing an overall shallowing trend from slope mudstones to marginal marine and continental deposits. Preservation and high resolution of cyclothems occurred through the interaction between high-amplitude relative sea-level fluctuations, a particular pattern of differential subsidence due to intrabasinal tectonics, and high rates of sediment supply. The studied succession was laid down in the Crotone basin under an extensional tectonic regime, following a major, middle Pliocene contractional phase probably of transpressional nature. Two major unconformities, locally accompanied by angular discordances, occur within the succession. The former, centered at ca. 1.2 Ma, is thought to reflect the opening of the San Mauro subbasin within the Crotone basin in the early Pleistocene, following dextral transtensional motion along north- to north-northeast–trending faults. The latter, with a hiatus lasting from ca. 0.65 to 0.45 Ma, may reflect the decoupling of the Calabrian block with respect to Adria and Sicily, allowing further advancing of the Calabrian arc in the Ionian area, where subduction could continue until the present time.The lower part of the succession (the H. sellii and "large Gephyrocapsa" Zones, from ca. 1.67 to ca. 1.23 Ma) consists of slope to outer-shelf monotonous mudstones and is bounded at the top by the first unconformity, whose gap suppresses the upper part of to locally the entire "large Gephyrocapsa" Zone (1.608–1.235 Ma) and the lower part of the "small Gephyrocapsa" Zone (1.235–0.96 Ma). A number of cyclothems developed in an outer- to inner-shelf environment within the "small Gephyrocapsa" Zone. Biomagnetostratigraphic constraints strongly support a correlation between the condensed sections of cyclo thems and MIS (marine isotope stage) 33 to MIS 25.From the base of the P. lacunosa Zone (at ca. 0.96 Ma) upward, the succession rapidly becomes sand dominated, a change that can be confidently correlated with the major climatic shift associated with MIS 24 to MIS 22. In the following succession, two tephra layers, named "Pitagora ash" and "Parmenide ash," provide mappable isochronous surfaces across the subbasin. The sedimentary record is remarkably cyclo themic, characterized by a stack of simple or composite, seaward-prograding, sand- dominated tongues and intervening aggradational deposits related to transgressive-deepening episodes. The cyclothems can be confidently correlated with the oxygen isotope record up to the Matuyama-Brunhes inversion, i.e., up to MIS 19, whereas the stratigraphic record postdating MIS 19 has poorer chronological constraints. Dating is provided by tracing the Parmenide ash in the deeper-water coeval succession of the southern part of the Crotone basin, where the deposits including the ash can be correlated by means of nannofossil biostratigraphy with termination V (transition from MIS 12 to MIS 11). The second unconformity marks an abrupt increase in the proximal character of the sedimentary deposits forming the cyclothems, which incorporate increasing amounts of marginal-marine to continental deposits in the upper part of the subbasin infill.Several lines of direct and indirect evidence indicate that, in spite of the dramatic role of tectonics in shaping stratigraphic architecture, the roles of tectonics and eustasy can be disentangled, owing to the different time scales of the tectonic events and the high-frequency, high-amplitude glacio- eustatic Pleistocene cycles. Interaction between intrabasinal tectonics and high rates of sediment supply allowed forced regressive and possibly also lowstand systems tracts to be preserved in some cyclothems, particularly in the lower part of the succession, an unusual fact in shelf deposits.Considering the far younger age of marine terraces on the Ionian side of Calabria when compared to the Tyrrhenian side, it is thought that, during ongoing subduction of the Ionian crust, a wave of uplift and related extensional tectonics migrated southeastward in the rear of the frontal accretionary wedge. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.