The Specchio Unit (Northern Apennines, Italy): An Ancient Mass Transport Complex Originated from Near-Coastal Areas in an Intra-Slope Setting

Ogata, Kei; Tinterri, Roberto; Pini, Gian Andrea; Mutti, Emiliano

doi:10.1007/978-94-007-2162-3_53

Cited by 18 publications

(27 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4A). The latter structures, not systematically classified in the literature, have been only recently observed in other examples of exhumed MTDs (Ogata et al 2010(Ogata et al , 2012b, reinforcing the importance of simple shearing mechanism in the basal shear zones.…”

Section: 2mentioning

confidence: 71%

“…In particular, the internal structure of the deposits from mass transport (hereafter defined as mass-transport deposits, or MTDs, and mass-transport complexes, or MTCs when they consist of different superposed MTDs, see, e.g., Ogata et al 2012b) is commonly difficult to be deciphered in detail mainly because of the acoustic transparency and the small-scale of the related features (meters to tens of meters) that is below the standard seismic resolution. Detailed studies on exhumed analogues can than provide useful information on the small-scale internal geometry and on deformation mechanisms, which are complementary to those obtained through off-shore geophysical investigations and drilling (e.g., Lucente and Pini, 2003;Mienert 2004;Codegone et al 2012a;Ogata et al 2012aOgata et al , 2014Pini et al 2012).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Festa

Ogata

Pini

et al. 2014

International Geology Review

Self Cite

View full text Add to dashboard Cite

This is an author version of the contribution published on:Questa è la versione dell'autore dell'opera: Review, v. 57, no. 5-8, 540-562. Doi: 10.1080/00206814.2014. Festa et al. (2015) -International GeologyThe definitive version is available at:La versione definitiva è disponibile alla URL:http://www.tandfonline.com/loi/tigr20 AbstractIn the Northern Apennines of Italy, mud-rich olistostromes (sedimentary mélanges) occur at different stratigraphic levels within late Oligocene -early Miocene sedimentary record of episutural/wedge-top basins. They are widely distributed along the exhumed outer part of the Ligurian accretionary complex, atop of the outer Apenninic prowedge, over an area of about 300 km long and 10-15 km wide. Olistostromes represent excellent examples of ancient submarine mass-transport complexes (MTCs), consisting of stacked cohesive debris flows that can be directly compared with some of those observed in modern accretionary wedges. We describe the internal arrangement of olistostrome occurrences in the sector between Voghera and the Monferrato, analyzing their relationships with mesoscale liquefaction features, which are commonly difficult to observe in modern MTCs. Slope failures occurred in isolated sectors along the wedge front, where out-of-sequence thrusting, seismicity and different pulses of overpressured tectonically-induced fluid flows acted concomitantly. Referring to the Northern Apennines regional geology, we also point out a gradual lateral rejuvenation (from late Oligocene to early Miocene) toward the SE and an increasing in size and thickness of the olistostromes along the strike of the frontal Apenninic prowedge. This suggests that morphological reshaping of the outer prowedge via mass transport processes balanced with different pulses in a short time span the SE-ward migration and segmentation of the accretionary processes. The latter have been probably favored by the occurrence in the northwestern part of the Northern Apennines of major, inherited paleogeographic features controlling the northward propagation of the prowedge. The detailed knowledge of olistostromes, as ancient examples of MTCs related to syn-sedimentary tectonics and shale diapirism, and of their lateral variations in term of age and size, provides useful information for better understanding both the tectono-stratigraphic evolution of the Apenninic prowedge and the submarine slope failures in modern accretionary wedges.

show abstract

Section: 2mentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Festa

Ogata

Pini

et al. 2014

International Geology Review

Self Cite

View full text Add to dashboard Cite

show abstract

“…The first one is the depth reached by the slope failure and its propagation toward the basin margins. Mixing of the rocks derived from the basin margins with those sediments in the basin is a common process in the formation of mass-transport bodies (Page and Suppe, 1981;Callot et al, 2008;Ogata et al, 2012c). During deposition, these "exotic" rocks were extraformational, extrabasinal, older and much more consolidated than the basin sediments.…”

Section: Sedimentary Stratal Disruption and Mixingmentioning

confidence: 99%

“…Exotic component can be "foreign" at different levels with respect to the "native" component of the main body, varying from simply extra-formational (e.g., Panini et al, 2002;Codegone et al, 2012b), to an extra-basinal origin (e.g., Lash, 1987;Ogata et al, 2012c), up to having been derived from different structural units (Abbate et al, 1970(Abbate et al, , 1981Alonso et al, 2006;Lucente and Pini, 2008 and references therein), paleogeographic domains, tectonic settings or structural levels (P-T conditions, diagenetic/metamorphic degree) (e.g., Cloos, 1982;Cowan, 1985;Shreve, 1988a, 1988b;Dilek, 1989;Harris et al, 1998;Ogawa, 1998;Dilek et al, 1990Dilek et al, , 1999Dilek et al, , 2007Wakabayashi, 2011Wakabayashi, , 2012Ukar, 2012).…”

Section: Mélange and Broken Formation Terminologymentioning

confidence: 99%

Mechanisms and processes of stratal disruption and mixing in the development of mélanges and broken formations: Redefining and classifying mélanges

et al. 2012

View full text Add to dashboard Cite

“…for the location of the logs). (C) Depositional model explaining the relationship among para‐conglomerate (F2) deposited by a hyperconcentrated flow, blocky flow facies (Blfw) ( sensu Mutti et al ., ; Ogata et al ., ) and graded bed deposited by an affiliated turbidity current. It is worth noting that blocky flow deposits are present in the frontal and lateral edges of the hyperconcentrated flows above morphological highs.…”

Section: Facies Analysis and Bed Typesmentioning

confidence: 99%

Turbidites facies response to the morphological confinement of a foredeep (Cervarola Sandstones Formation, Miocene, northern Apennines, Italy)

Tinterri

Piazza

2018

Sedimentology

Self Cite

View full text Add to dashboard Cite

The Cervarola Sandstones Formation, Aquitanian–Burdigalian in age, was deposited in an elongate, north‐west stretched foredeep basin formed in front of the growing northern Apennines orogenic wedge. As other Apennine foredeep deposits, such as the Marnoso‐arenacea Formation, the stratigraphic succession of the Cervarola Sandstones Formation records the progressive closure of the basin due to the propagation of thrust fronts towards the north‐east, i.e. towards the outer and shallower foreland ramp. This process produces a complex foredeep that is characterized by syn‐sedimentary structural highs and depocentres that strongly influence lateral and vertical turbidite facies distribution. This work describes and discusses this influence, providing a high‐resolution physical stratigraphy with ‘bed by bed’ correlations of an interval ca 1000 m thick, parallel and perpendicular to the palaeocurrents and to the main structural alignments, on an area of ca 30 km that covers the proximal portion of the Cervarola basin in the northern Apennines. The main aim is to show, for the first time ever, a detailed facies analysis of the Cervarola Sandstones Formation, based on a series of bed types that have proven fundamental to understand the morphology of the basin. The knowledge of the vertical and lateral distribution of these bed types, such as contained‐reflected and slurry (i.e. hybrid) beds, together with other important sedimentary structures, i.e. cross‐bedded bypass facies and delamination structures, is the basis for better understanding of facies processes, as well as for proposing an evolutionary model of the foredeep in relation to the syn‐sedimentary growth of the main tectonic structures. This makes the Cervarola Sandstones, like the Marnoso‐arenacea Formation, a typical example of foredeep evolution.

show abstract

The Specchio Unit (Northern Apennines, Italy): An Ancient Mass Transport Complex Originated from Near-Coastal Areas in an Intra-Slope Setting

Cited by 18 publications

References 12 publications

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Late Oligocene–early Miocene olistostromes (sedimentary mélanges) as tectono-stratigraphic constraints to the geodynamic evolution of the exhumed Ligurian accretionary complex (Northern Apennines, NW Italy)

Mechanisms and processes of stratal disruption and mixing in the development of mélanges and broken formations: Redefining and classifying mélanges

Turbidites facies response to the morphological confinement of a foredeep (Cervarola Sandstones Formation, Miocene, northern Apennines, Italy)

Contact Info

Product

Resources

About