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Submarine Landslide Deposits in Orogenic Belts: Olistostromes and Sedimentary Mélanges

Published on Nov 4, 2019
· DOI :10.1002/9781119500513.ch1
Kei Ogata14
Estimated H-index: 14
,
Andrea Festa19
Estimated H-index: 19
+ 1 AuthorsJ. L. Alonso15
Estimated H-index: 15
Abstract
  • References (176)
  • Citations (0)
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References176
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The Franciscan Complex of California is better understood now than in 1972, when Berkland et al. defined it as a complex and divided it into three geographic belts. A re-evaluation is needed. Belts first served as major architectural units, but they have been abandoned by some and renamed as and subdivided into tectonostratigraphic terranes by others. The Franciscan Complex – considered to be the archetypical accretionary complex by many – is the folded, faulted, and stratally disrupted rock mas...
7 CitationsSource
#1Edoardo Barbero (UNITO: University of Turin)H-Index: 1
#2Andrea Festa (UNITO: University of Turin)H-Index: 19
Last. Rita CatanzaritiH-Index: 2
view all 4 authors...
In the northwestern part of Northern Apennines, between Curone and Staffora Valleys, the tectonic superposition between the External Ligurian Units (i.e. the ophiolitic-bearing chaotic complex of the Groppallo Unit and the non-ophiolitic Cassio Unit), the Middle Eocene – Miocene wedge-top basin Epiligurian Units succession, and the Late Messinian – Pliocene Po Plain succession, records the multistage tectono-stratigraphic evolution from subduction to continental collision. Our geological map, at...
7 CitationsSource
#1Paola Tartarotti (University of Milan)H-Index: 15
#2Andrea Festa (UNITO: University of Turin)H-Index: 19
Last. Gianni Balestro (UNITO: University of Turin)H-Index: 10
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The eclogite facies Zermatt-Saas ophiolite in the Western Alps includes a composite chaotic unit exposed in the Lake Miserin area, in the southern Aosta Valley region. The chaotic unit is characterized by a block-in-matrix texture consisting of ultramafic clasts and blocks embedded within a carbonate matrix. This unit overlies massive serpentinite and ophicarbonate rocks and is unconformably overlain by layered calcschist. Despite the effects of subduction and collision-related deformation and m...
9 CitationsSource
#1Andrea Festa (UNITO: University of Turin)H-Index: 19
#2Kei OgataH-Index: 14
Last. J. L. Alonso (University of Oviedo)H-Index: 15
view all 5 authors...
Olistostromes (sedimentary melanges) represent the products of ancient submarine mass transport processes. We present a comparative analysis of the occurrences and internal structures of these sedimentary melanges at a global scale with a focus on the Circum-Mediterranean, Appalachian and Circum-Pacific regions, and discuss their formation and time-progressive evolution in different tectonic settings. Lithological compositions, stratigraphy, and structural features of olistostromes reflect the o...
49 CitationsSource
#1Emilio González Clavijo (Instituto Geológico y Minero de España)H-Index: 8
#2Ícaro Dias da Silva (University of Lisbon)H-Index: 6
Last. Alejandro Díez Montes (Instituto Geológico y Minero de España)H-Index: 6
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Abstract At the NW of the Iberian Variscan Massif the Parautochthon is envisaged as an intervening structural unit located between the far-traveled allochthonous stacked units and the autochthon. It has been recently divided in two structural slices; the Upper constitutes a repetition of the upper Cambrian to Silurian sequence of the Central Iberian Zone autochthon, while the Lower has been proposed as a thick Variscan synorogenic deposit. A large volcanic block embedded in the uppermost Devonia...
6 CitationsSource
#1Jonas B. Ruh (UPMC: Pierre-and-Marie-Curie University)H-Index: 1
9 CitationsSource
ABSTRACTThe Franciscan Complex comprises the largely sedimentary basement of the California Coast Ranges. This classic trench deposit has undergone a series of superimposed tectonic events since the end of Jurassic time, involving accretion, high-pressure (HP) recrystallization, buoyancy and wedge-driven exhumation, and transcurrent slip. Processes reflect plate convergence, transpressive-orthogonal subduction, and transpressive–transtensive offset. Besides stratigraphically intact strata, the F...
7 CitationsSource
#1Estibalitz Ukar (University of Texas at Austin)H-Index: 6
#2Mark Cloos (University of Texas at Austin)H-Index: 20
The seacliff exposure at San Simeon, California, contains graphite-schist blocks in a shale-matrix, an undocumented lithology within the Franciscan melange. Thirty graphite-schist blocks were studied to discover all the varieties in this classic locality of melange. Based on their mineralogical assemblage and composition, and textural characteristics the graphite-schists in San Simeon are subdivided into two main types (Type I and II) with two subdivisions each (A and B). Type IA and IIA blocks ...
4 CitationsSource
#1Matheus S. Sobiesiak (Aberd.: University of Aberdeen)H-Index: 3
#2Ben Kneller (Aberd.: University of Aberdeen)H-Index: 29
Last. Juan Pablo Milana (National University of San Juan)H-Index: 14
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The preservation of large, relatively undeformed blocks is a characteristic feature of mass transport deposits (MTD). We examine a well-exposed succession at Cerro Bola in La Rioja Province, western Argentina, which comprises mid to late Carboniferous fluvio-deltaic sediments, turbidites and MTD’s. The main MTD, which is up to 180 m thick and crops out over 8 km, is characterized by allochthonous sandstone blocks that range in size from metres to 100s of metres in length, and are up to tens of m...
8 CitationsSource
#1Kei Ogata (University of Parma)H-Index: 14
#2Gian Andrea Pini (UniTS: University of Trieste)H-Index: 21
Last. Claudio Corrado LucenteH-Index: 7
view all 5 authors...
In this study we combine observations and analytical data from large-scale (10–100s of m-thick and 100 m2-extensive), siliciclastic and carbonate MTD/MTCs belonging to the Oligocene – Miocene foredeep and wedge-top successions of the Northern Apennines and the Paleocene – Eocene Friuli basin of the northwestern Dinarides (Italy and Slovenia), to discuss the deformation processes critical to the emplacement of submarine landslides. We focus on the identification of meso-scale structures, used as ...
7 CitationsSource
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