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(Article of periodic en Anglais - 1978)

Document title

Late Cenozoic history of eastern Crete and implications for the geology and geodynamics of the southern Aegean area

Authors(s) and Affiliation(s)

FORTUIN A. R. ;

Abstract

An interpretation is given of the structural setting and the sedimentary history of the Middle Miocene Quaternary deposits in eastern Crete (Ierapetra region). The present tectonic structure, characterized by normal faults in W-E and NE-SW directions, is dominated by a central NE-SW graben, which seems to mark a dislocation in the curvature of the Aegean Arc. In Late Serravallian Early Tortonian times deposition drastically changed from terrestrial to open marine, with turbidites, filling in a graben that extended over the southern half of the region. The sources of sediment supply then shifted from East to West and slices of sediments (in part of pre-Neogene age) slid from the uplifted blocks in the North to the central parts of the region, where a submarine valley was formed. A seismic reflection profile South of Crete may show analogous gravity sliding in the Neogene. From the Late Tortonian till the Pliocene carbonate sedimentation took place. A gradual shallowing followed, wich ended with deposition of the well known Messinian facies. Unstable tectonic conditions controlled the sedimentation until the Early Pliocene, when quiet open marine sedimentation returned. In the early Late Pliocene tectonic uplift started to separate Crete as a horst from the surrounding seas. Although strong, this general uplift was periodically interrupted. (AIS).

Source

Article of periodic

published at : Geologie en mijnbouw Delft

Editor :

Millesime : 1978, no3 [pp. 451-464]

Bibliographic references : 26réf.

Language

Anglais

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