A new type of slumping-induced soft-sediment deformation structure: the envelope structure
Item
Title (Dublin Core)
A new type of slumping-induced soft-sediment deformation structure: the envelope structure
Description (Dublin Core)
The sediments of the Cretaceous Gyeokpori Formation in south-western South Korea accumulated in a lake in which mainly siliciclastic rocks were deposited, with some interbedded volcaniclastics. The nearby volcanic activity resulted in unstable lake margins inducing a dominance of gravity-flow deposits. The high sedimentation rate facilitated soft-sediment deformation on the sloping margin. The deposition of numerous gravity-flow deposits resulted in a vertically heterolithic stratification. The slumps are composed of different lithologies, which is expressed in different types of deformation due to the difference in cohesion between sandy and mussy layers within the slumps. Coarser-grained (cohesionless) slumps tend to show more chaotic deformation of their lamination or layering. The difference in slumping behaviour of the cohesive and non-cohesive examples is explained and modelled.
Creator (Dublin Core)
Byun Uk Hwan
van Loon A.J. Tom
Kwon Yi Kyun
Ko Kyoungtae
Subject (Dublin Core)
gyeokpori formation
cretaceous
lacustrine environment
slumping
conglomerate
Geology
QE1-996.5
Publisher (Dublin Core)
Sciendo
Date (Dublin Core)
2019-08-01T00:00:00Z
Type (Dublin Core)
article
Identifier (Dublin Core)
2080-6574
10.2478/logos-2019-0011
https://doaj.org/article/6dd211f0136b41fcb3e9bf216841a07d
Source (Dublin Core)
Geologos, Vol 25, Iss 2, Pp 111-124 (2019)
Language (Dublin Core)
EN
Relation (Dublin Core)
http://www.degruyter.com/view/j/logos.2019.25.issue-2/logos-2019-0011/logos-2019-0011.xml?format=INT
https://doaj.org/toc/2080-6574
Provenance (Dublin Core)
Journal Licence: CC BY-NC-ND