Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Mazzoli, S. Articles by Zattin, M. Search for Related Content GeoRef GeoRef Citation

Tectonic burial and "young" (<10 Ma) exhumation in the southern Apennines fold-and-thrust belt (Italy)

¹ Dipartimento di Scienze della Terra, Università di Napoli Federico II, 80138 Naples, Italy
² Dipartimento di Scienze Geologiche, Università Roma Tre, 00146 Rome, Italy
³ Dipartimento di Scienze della Terra, Università di Camerino, Piazza Cavour 19/f, 62032 Camerino, Italy
⁴ Shell Italia E & P, Via Dei due Macelli, 66, 00187 Rome, Italy
⁵ Dipartimento di Scienze Geologiche e Ambientali, Università di Bologna, 40126 Bologna, Italy

View larger version (69K): [in this window] [in a new window]   Figure 1. Geological sketch map of the study area, showing location of regional cross section X–X' (after Butler et al., 2004) and analyzed samples. Thermal and thermochronological data (Ro, KI, %I in I/S, Th, AFTs; see text) are from Corrado et al. (2005), integrated with new data. The data are shown in the different colored blocks for the main tectonic units, with period or epoch referring to age of the sampled rocks. AFT cooling ages are shown in Ma ± 1, in color also relating to the sampled tectonic unit (ages referred to the Apulian Platform also include data from the mélange zone exposed on top of Monte Alpi). Asterisks mark samples showing no AFT annealing (upper thermotectonic plate); for all other samples (lower thermotectonic plate), showing total annealing of AFTs, the data represent exhumation ages (cooling through the isotherm 110 °C).

View larger version (39K): [in this window] [in a new window]   Figure 2. Three simplified sketches showing interpreted tectonic evolution of the southern Apennines. Carbonate slope facies associated with the eastern margin of the Apennine Platform and western margin of the Apulian Platform are shown with white and black dots, respectively. The location of the eastern margin (M) of the Apennine Platform is held fixed through the three panels for reference. A: Mesozoic setting of the continental margin later telescoped in the southern Apennines. The Liguride oceanic domain was located to the west of the Apennine Platform. The Lagonegro Basin is shown in reduced width (note that the original width of the basin remains poorly constrained). B: "Closure" of the Lagonegro Basin, initiating buttressing of the allochthonous wedge against the western inherited rifted margin of the Apulian Platform (BU). C: Following emplacement of the allochthonous wedge above the westernmost portion of the Apulian Platform, gravitational readjustments dominate within the allochthonous wedge, triggering denudation and tectonic exhumation (assisted by erosion). Active shortening migrated to the underlying Apulian crust, producing basement-involved inversion at depth.