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Ordovician palaeogeography of the southern and eastern flanks of the Harlech Dome, Merionethshire, North Wales
Author(s) -
Ridgway J.
Publication year - 1976
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.3350110203
Subject(s) - geology , dome (geology) , volcanism , paleontology , volcano , ordovician , palaeogeography , subsidence , sedimentary rock , island arc , seismology , geomorphology , tectonics , structural basin , subduction
Abstract The Arenig to Caradoc palaeogeographic evolution of the Harlech Dome region is interpreted from a study of the volcanic and sedimentary successions on the eastern and southern flanks of the Dome. Acid ignimbrite volcanism is shown to have been associated with periods of uplift and intermediate to basic volcanism with periods of subsidence. The evolution of the region can be compared to that of an island arc.