Interpreting siliciclastic-carbonate detrital modes in foreland basin systems: An example from Upper Miocene arenites of the central Apennines, Italy

Abstract

In the central Apennines, interacting siliciclastic and carbonate marine clastic wedges filled the foreland basin system during the late Miocene. Conjunction of collisional thrust tectonics and prethrusting normal faults generated a complex foredeep with intrabasinal structural highs that represented additional source areas to the basin. \ud \ud Detrital modes of the late Miocene central Apennines orogenic system range in composition from intrabasinal carbonate to quartzofeldspatholithic and calclithite arenites. The external zone of the foredeep is characterized by hemipelagic deposits, called the Orbulina Marl. Their arenite beds are composed by intrabasinal carbonate, with dominant bioclasts and minor intraclasts, and glauconite derived from an active shallow-marine carbonate source. These hemipelagic deposits are partly coeval with and partly overlain by siliciclastic turbidites of the Frosinone and the Argilloso-Arenacea Formations, and they represent deposition within local foredeep depocenters. Siliciclastic turbidite sandstones are quartzofeldspatholithic, which documents provenances from metamorphic, plutonic, ophiolitic, and sedimentary rocks. Carbonate intrabasinal structural highs were the main source for carbonate breccias, intrabasinal arenites, and calclithites of the Brecce della Renga Formation, the deposits of which are locally interbedded with the coeval siliciclastic turbidite sandstones. \ud \ud Evolution of late Miocene sandstone detrital modes reflected the changing nature of the central Apennines thrust belt through time and the complex architecture of the foreland basin system; it records the history of accretion, deformation of the foredeep, and progressive areal reduction of carbonate-producing areas along with the sedimentary and structural evolution of local intrabasinal highs

Conservation of 87 Sr/ 86 Sr isotopic ratios during the winemaking processes of ‘Red’ wines to validate their use as geographic tracer

“…The selected wineries cover the three distinct DOC areas and they are from a geologically well--defined region (Critelli et al, 2007;Giordano et al, 2010), from which a wide isotopic set of data for volcanic rocks is available (Boari et al, 2009a,b;Conticelli et al, 2010).…”

Geology of the Northern Simbruini Mts. (Abruzzo – Italy)

“…(Devoto, 1967) is a lateral equivalent of the terrigenous units (Fabbi & Rossi, 2014 and references therein). This unit is markedly clastic, lithologies ranging from pure breccias to rudite-arenite-pelite associations, and reflects the existence of a prominent structural high in the area (Figure 6), whose margins underwent dismantling (Carminati et al, 2014;Critelli et al, 2007;Fabbi, 2013;Fabbi & Rossi, 2014). These margins were submarine escarpments which could be sites of mineralization (i.e.…”

“…In the late Miocene, the Latium-Abruzzi platform became involved with the Apennine chain building (Bally, Burbi, Cooper, & Ghelardoni, 1986;Centamore, Rossi, & Tavarnelli, 2009;Doglioni, Gueguen, Harabaglia, & Mongelli, 1999;Mostardini & Merlini, 1986;Patacca, Sartori, & Scandone, 1992;Patacca, Scandone, Bellatalla, Perilli, & Santini, 1991;Royden, Patacca, & Scandone, 1987), which resulted in the abrupt shift from neritic carbonate to hemipelagic and turbiditic foredeep sedimentation (Figure 2) (Bigi et al, 2003;Carminati, Corda, Mariotti, & Brandano, 2007;Cipollari & Cosentino, 1991;Critelli et al, 2007;Milli & Moscatelli, 2000;Patacca & Scandone, 1989).…”

“…Conversely, in the adjacent Tuscan and Umbria-Marche-Sabina Domains the Early Jurassic rifting phase (Fabbi & Santantonio, 2012;Santantonio & Carminati, 2011) produced the drowning of the carbonate platform and the consequent onset of pelagic sedimentation since the Hettangian/Pliensbachian. The typical Latium-Abruzzi stratigraphy consists of a thick Meso-Cenozoic carbonate platform succession, generally overlain by upper Miocene/Pliocene terrigenous units representing the Apennine chain foredeep sedimentation (Bigi, Costa Pisani, Milli, & Moscatelli, 2003;Critelli et al, 2007;Milli & Moscatelli, 2000). The terrigenous succession in the study area (Figures 1(c) and 2) includes a peculiar, markedly lithoclastic unit, the 'brecce della Renga formation' (Compagnoni, Galluzzo, & Santantonio, 1990;Devoto, 1967;Fabbi & Rossi, 2014).…”

Compositional signatures of the Cenozoic sedimentary successions of the Malaguide Complex (Betic Cordillera, Spain)

“…Siliciclastic component is present in fine-grained sandstones and siltstones and is characterized by subrounded to angular quartz grains and micas (biotite and muscovite). The samples from the Espuña Formation are mainly characterized by basal mixed carbonate and siliciclastic arenites (Zuffa, 1980;Critelli et al, 2007) followed by bioclastic limestones with packstone textures. In particular, the lower layers of the Espuña Fm area is characterized by sandstone samples having a quartzoarenitic composition (Fig.…”