Computer Science
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982e%26psl..61..303j&link_type=abstract
Earth and Planetary Science Letters, Volume 61, Issue 2, p. 303-318.
Computer Science
34
Scientific paper
Minor reverse faults in widely dispersed Neogene outcrops in the central Aegean have led several people to suggest that the regional extension which started in the lower Pliocene or earlier was interrupted by short periods of compression. The durations of these postulated compressional episodes are short compared to the time scale on which convective forces acting on the base of the lithosphere can change. Thus possible mechanisms for driving such motions are limited. In this paper we offer alternative explanations for these observations and, in particular, show that these apparently compressional episodes are probably not regional in extent and may not be truly compressional in origin. In some places they are more likely to be a consequence of the considerable rotation that is found in extensional terranes. The Plio-Quaternary paleogeography of the central Aegean is satisfactorily explained by uplift in the footwall blocks of normal faults and does not require regional compression. Studies of the faulting associated with recent large earthquakes suggest that the sort of microtectonic analysis which is typically carried out on small faults in surficial sediments is more likely to reflect the internal deformation of blocks bounded by major fault structures than be a reliable indicator of regional stress patterns.
Jackson James A.
King Greg
Vita-Finzi Claudio
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