Skip to Main content Skip to Navigation
Journal articles

Diachronous development of master joints of different orientations in different lithological units within the same forearc-basin deposits, Kyushu, Japan

Abstract : The geometrical and chronological characteristics of joints and subordinate fractures in the Miocene (12-6 Ma) Uchiumigawa Group, Kyushu, Japan, strongly depend on the host lithology. In massive sandstone units (11 stations), joints are normal to bedding and form two suborthogonal sets, a master joint set parallel to the bedding strike and a cross joint set perpendicular to the bedding strike. In interbedded sandstone-mudstone units (11 stations), joints are found only in sandstone layers and have the same characteristics as the joints in the thick sandstone units, except that the chronology is opposite: in nine stations, master joints are perpendicular to the bedding strike and cross joints are parallel to the bedding strike. The observed joint pattern is tentatively explained by a diachronous formation of master joints which appeared first in massive sandstone units and later in the interbedded units, as a result of the superposition in the study area of two different deformation episodes independently documented by regional fault-slip data. Transition between the two jointing events took place around 6 Ma.
Document type :
Journal articles
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03606667
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Saturday, March 12, 2022 - 7:22:11 AM
Last modification on : Sunday, March 13, 2022 - 3:01:47 AM

Links full text

Identifiers

Collections

Citation

Olivier Fabbri, Patrick Gaviglio, Jean-François Gamond. Diachronous development of master joints of different orientations in different lithological units within the same forearc-basin deposits, Kyushu, Japan. Journal of Structural Geology, 2001, 23, pp.239-246. ⟨10.1016/S0191-8141(00)00093-6⟩. ⟨insu-03606667⟩

Share

Metrics

Record views

7