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A study of the relation between jointing and structural evolution
Author(s) -
Roberts J. C.
Publication year - 1966
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350050113
Subject(s) - carboniferous , geology , lithology , tectonics , joint (building) , relation (database) , paleontology , shear (geology) , seismology , computer science , engineering , structural engineering , structural basin , database
This paper records the results of a regional jointing survey in the country adjacent to a part of the Neath disturbance, South Wales, in an area of Old Red Sandstone and Carboniferous Strata. A well developed joint system exists which is comprised of up to six sets of joints striking at 350°, 330°, 290°, 270°, 240° and 210°. The joint patterns undergo stratigraphical and areal variation, which can be correlated with lithology and tectonic setting. A comparison of the joint trends with the faults and folds shows that a genetic relationship exists between the structures. It is suggested that the joint sets formed early in the tectonic evolution of the area, and that these and the faults can be attributed to a general N‐S compressive force, and its related first and second order shear regimes.