Sustained Turbidity Currents: Evidence from the Pliocene Periadriatic Foredeep (Cellino Basin, Central Italy)

Felletti, Fabrizio; Carruba, Stefano; Casnedi, Raffaele

doi:10.2110/sepmsp.092.325

Cited by 8 publications

(11 citation statements)

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“…The settling of a suspension cloud at the end of a turbidity flow may have been facilitated by reductions in bathymetric gradient and by flow ponding toward the southern part of the basin, or by the presence of intrabasinal topographic highs and/or slope changes that triggered flow deceleration and mud-erosion processes (Muzzi Magalhaes and Tinterri 2010). Similar depositional mechanisms have been proposed by Remacha et al (2005) for basin-plain calcilutites in the Hecho Basin (south-central Pyrenees, Spain), by Carruba et al (2004Carruba et al ( , 2007 and Felletti et al (2009) in the Cellino Periadriatic foredeep (Central Italy), and by Felletti (2004) and Felletti andBersezio (2010a, 2010b) for ponded turbidite systems in the Tertiary Piedmont Basin (NW Italy).…”

Section: Turbidity Currentssupporting

confidence: 73%

Magnetic-Fabric Analysis As A Tool To Constrain Mechanisms of Deep-Water Mudstone Deposition In the Marnoso Arenacea Formation (Miocene, Italy)

Dall'Olio¹,

Felletti²,

Muttoni³

2013

Journal of Sedimentary Research

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Mudstone-dominated marine successions are common in the geological record, yet a full understanding of their depositional processes is often hampered by a lack of generally accepted diagnostic criteria to distinguish between hemipelagic settling and deposition from a flowing medium. The Marnoso Arenacea Formation, a turbidite unit of Miocene age cropping out in the northern Apennines of Italy, offers the possibility to address some of these uncertainties. A relatively small (, 10%) but distinctive portion of the Marnoso Arenacea Formation is composed of white marlstone beds (WM beds) that have frequently been interpreted as due to hemipelagic settling of fine-grained particles (hemipelagites). The analysis of the anisotropy of magnetic susceptibility (AMS) revealed the presence in the WM beds of maximum susceptibility axes clustered within the depositional plane along the average paleoflow direction inferred from flute casts at the bases of the nearest turbidite beds, whereas the minimum susceptibility axes are oriented perpendicular to the bedding plane. This fabric is interpreted as largely sedimentary in origin (albeit a contribution from tectonic shortening cannot be excluded) and due to the alignment within the bedding plane of paramagnetic grains (e.g., muscovite) and possibly also ferromagnetic grains (magnetite) under lowvelocity currents. The trend of the maximum susceptibility axes, and hence of the paleoflow direction, is approximately oriented NNW-SSE after correction for Apennines thrust-sheet rotation since the Miocene. These results suggest that the WM beds cannot be entirely due to hemipelagic settling, as often stated in the literature. A discussion of alternative depositional mechanisms leads us to conclude that the WM beds may have been deposited under the influence of contour currents and should therefore be referred to as muddy contourites.

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Section: Turbidity Currentssupporting

confidence: 73%

Magnetic-Fabric Analysis As A Tool To Constrain Mechanisms of Deep-Water Mudstone Deposition In the Marnoso Arenacea Formation (Miocene, Italy)

Dall'Olio¹,

Felletti²,

Muttoni³

2013

Journal of Sedimentary Research

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“…This study suggests that the Arda River succession corresponds to the subaqueous extension of a fluvial system. It originated when the river in flood directly discharged a sustained (Carruba et al, 2004; Felletti et al, 2009) and relatively denser turbulent mixture of fresh water and sediments (hyperpycnal flows; Bates, 1953) into the receiving standing body of water. This system extended for kilometers away from the river mouth and developed a predictable path of genetically related facies (Browne and Naish, 2003; Mancini et al, 2013; Marini et al, 2013; Milli et al, 2016; Bruno et al, 2017) during its travel basinward.…”

Section: Results and Interpretationsmentioning

confidence: 99%

A multidisciplinary study of ecosystem evolution through early Pleistocene climate change from the marine Arda River section, Italy

et al. 2018

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The Arda River marine succession (Italy) is an excellent site to apply an integrated approach to paleoenvironmental reconstructions, combining the results of sedimentology, body fossil paleontology, and ichnology to unravel the sedimentary evolution of a complex marine setting in the frame of early Pleistocene climate change and tectonic activity. The succession represents a subaqueous extension of a fluvial system, originated during phases of advance of fan deltas affected by high-density flows triggered by river floods, and overlain by continental conglomerates, indicating a relative sea level fall and the establishment of a continental environment. An overall regressive trend is observed through the section, from prodelta to delta front and intertidal settings. The hydrodynamic energy and the sedimentation rate are not constant through the section, but they are influenced by hyperpycnal flows, whose sediments were mainly supplied by an increase in Apennine uplift and erosion, especially after 1.80 Ma. The Arda section documents the same evolutionary history of coeval successions in the Paleo-Adriatic region, as well as the climatic changes of the early Pleistocene. The different approaches used complement quite well one another, giving strength and robustness to the obtained results.

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“…NA stepwise migration after Carminati et al (). Grey area corresponds to the area where the Cellino Formation is exposed (Felletti et al, ). (d) Cross section (see box C for location) and a seismic line showing the along‐strike sedimentary sequences disconnection and deformed onlap surface on the Ferrara Arc thrust anticlines.…”

Section: Discussionmentioning

confidence: 99%

“…NA stepwise migration after . Grey area corresponds to the area where the Cellino Formation is exposed (Felletti et al, 2009) Eocene-Miocene) in the Meso-Cenozoic basins, whereas its deposition was limited or prevented on the top of structural high, like the Trento Plateau. This formation has been recognized as an effective décollement layer (Fantoni, Bersezio, & Forcella, 2004;Maesano et al, 2015;Massoli et al, 2006;Ravaglia et al, 2006), favouring the development of flat thrusts that partially override the basin-plateau boundary, causing the mentioned mismatch.…”

Section: Main Factors Driving Salient Positionmentioning

confidence: 99%

From cylindrical to non‐cylindrical foreland basin: Pliocene–Pleistocene evolution of the Po Plain–Northern Adriatic basin (Italy)

et al. 2019

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The architecture of foreland basins and the resulting distribution of clastic sediments are related to the constant interplay between tectonics and sedimentation. Specifically, basin floor modifications strongly influence dimensions, continuity and connections of sand‐size and fine‐grained deposits. Given the increasing need to identify deep potential reservoir deposits, the large‐scale definition of clastic porous targets and their seals is a matter of interest for oil and gas industry. Here, we present the reconstruction of the Po Plain and Northern Adriatic Foreland Basin (with an extent of ca. 40,000 km2) and its Pliocene–Pleistocene evolution, as an example of a sedimentary clastic system controlled by strongly non‐cylindrical foreland geometry. The study is based on the basin‐scale mapping of six unconformity‐bounded sequences, performed by interpreting a dense network of seismic lines and correlating well‐log data. This provides a three‐dimensional model of the step‐by‐step evolution of the basin and a description of the sediment dispersal pattern. We found that the basin records the change from a continuous (cylindrical) to highly fragmented (non‐cylindrical) foredeep geometry during Late Pliocene. In the Northern Apennines case, the main factors driving the development of a non‐cylindrical geometry are mainly related to inherited inhomogeneity in the downgoing block linked to its Mesozoic extensional faulting, and the relative orientation of these lineaments with respect to the direction of orogen migration. During the late Pliocene–Pleistocene the two directions progressively became close to parallel, and the Northern Apennines system reacted changing from a cylindrical to a non‐cylindrical state.

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Sustained Turbidity Currents: Evidence from the Pliocene Periadriatic Foredeep (Cellino Basin, Central Italy)

Cited by 8 publications

References 0 publications

Magnetic-Fabric Analysis As A Tool To Constrain Mechanisms of Deep-Water Mudstone Deposition In the Marnoso Arenacea Formation (Miocene, Italy)

Magnetic-Fabric Analysis As A Tool To Constrain Mechanisms of Deep-Water Mudstone Deposition In the Marnoso Arenacea Formation (Miocene, Italy)

A multidisciplinary study of ecosystem evolution through early Pleistocene climate change from the marine Arda River section, Italy

From cylindrical to non‐cylindrical foreland basin: Pliocene–Pleistocene evolution of the Po Plain–Northern Adriatic basin (Italy)

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