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Open AccessJournal Article

Classification of offshore mass movements

Thierry Mulder, +1 more
- 01 Jan 1997 - 
- Vol. 3, Iss: 44, pp 210
TLDR
More than 100 offshore mass-movement deposits have been studied in Holocene and Pleistocene sediments, and the processes can be divided into three main types: slides/slumps, plastic flows, and turbidity currents, of which 13 main varieties have been recognized as mentioned in this paper.
Abstract
More than 100 offshore mass-movement deposits have been studied in Holocene and Pleistocene sediments. The processes can be divided into three main types: slides/slumps, plastic flows, and turbidity currents, of which 13 main varieties have been recognized. The three types are differentiated mainly by motion, architecture, and shape of failure surface. For slides, the morphology of deposits can usually be linked to a process, but for plastic flows and turbidity currents, information about the motion is mainly provided by the sedimentary record. A static classification based on these features is given, and is related to a dynamic classification system to try to underline the morphological transformation of an offshore event from initiation to deposition.

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Citations
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The physical character of subaqueous sedimentary density flows and their deposits

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Marine hyperpycnal flows: initiation, behavior and related deposits. A review

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Submarine landslides: processes, triggers and hazard prediction

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Submarine landslides: advances and challenges

TL;DR: Due to the recent development of well-integrated surveying techniques of the sea floor, significant improvements were achieved in mapping and describing the morphology and architecture of submarine seafloor as discussed by the authors.
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Slope failures on the flanks of the western Canary Islands

TL;DR: In this article, the authors classify the most common types of landslides as debris avalanches, slumps, and debris flows on the western Canary Islands as follows: Debris avalanches are long runout catastrophic failures which typically affect only the superficial part of the island volcanic sequence, up to a maximum thickness of 1 to 2 km.
References
More filters
Journal ArticleDOI

The physical character of subaqueous sedimentary density flows and their deposits

TL;DR: A simple classification of sedimentary density flows, based on physical flow properties and grain-support mechanisms, and briefly discusses the likely characteristics of the deposited sediments is presented in this paper.
Journal ArticleDOI

Marine hyperpycnal flows: initiation, behavior and related deposits. A review

TL;DR: Hyperpycnites differ from other turbidites because of their well-developed inversely graded facies and intrasequence erosional contacts as discussed by the authors, which can transport a considerable volume of sediment to ocean basins.
Journal ArticleDOI

Submarine landslides: processes, triggers and hazard prediction

TL;DR: Monitoring of critical areas where landslides might be imminent and modelling landslide consequences so that appropriate mitigation strategies can be developed would appear to be areas where advances on current practice are possible.
Journal ArticleDOI

Submarine landslides: advances and challenges

TL;DR: Due to the recent development of well-integrated surveying techniques of the sea floor, significant improvements were achieved in mapping and describing the morphology and architecture of submarine seafloor as discussed by the authors.
Journal ArticleDOI

Slope failures on the flanks of the western Canary Islands

TL;DR: In this article, the authors classify the most common types of landslides as debris avalanches, slumps, and debris flows on the western Canary Islands as follows: Debris avalanches are long runout catastrophic failures which typically affect only the superficial part of the island volcanic sequence, up to a maximum thickness of 1 to 2 km.
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