The Çubukludaǧ graben, south of Izmir: Its tectonic significance in the Neogene geological evolution of the western Anatolia

Can Ş Genç*, Şafak Altunkaynak, Zekiye Karacik, Metin Yazman, Yücel Yilmaz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

Abstract

Field studies on the Neogene successions in south of Izmir reveal that subsequent Neogene continental basins were developed in the region. Initially a vast lake basin was formed during the Early-Middle Miocene period. The lacustrine sediments underwent an approximately N-S shortening deformation to the end of Middle Miocene. A small portion of the basin fill was later trapped within the N-S trending, fault-bounded graben basin, the Çubukludaǧ graben, opened during the Late Miocene. Oblique-slip normal faults with minor sinistral displacement are formed possibly under N-S extensional regime, and controlled the sediment deposition. Following this the region suffered a phase of denudation which produced a regionwide erosional surface suggesting that the extension interrupted to the end of Late Miocene-Early Pliocene period. After this event the E-W trending major grabens and horsts of western Anatolia began to form. The graben bounding faults cut across the Upper Miocene-Pliocene lacustrine sediments and fragmented the erosional surface. The Çubukludaǧ graben began to work as a cross graben between the E-W grabens, since that period.

Original languageEnglish
Pages (from-to)45-55
Number of pages11
JournalGeodinamica Acta
Volume14
Issue number1-3
DOIs
Publication statusPublished - 2001

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