Stratigraphy and volcanology of the Türkbükü volcanics: products of a stratovolcano in the Bodrum Peninsula, SW Anatolia

Abstract

The Middle-Upper Miocene Bodrum magmatic complex of the Aegean region, southwestern Turkey, is mainly represented by intermediate stocks, lavas, pyroclastic and volcaniclastic deposits. Monzonitic stocks and connected porphyry intrusions and extrusions are the first products of the magmatism. These are followed by a volcanic succession consisting of andesitic-latitic lavas, autobrecciated lavas, pyroclastic and volcaniclastic deposits. The final stage is represented by basaltic and basaltic andesitic flows and dykes intruded into previous units.The volcanic succession crops out in the northern part of the Bodrum peninsula. In the lower part of this succession are widespread pyroclastic deposits, composed of pyroclastic fall and flow units, alternating with epiclastic deposits. Grain size, volume and thickness of the pyroclastic deposits were mainly controlled by the type, magnitude and intensity of the eruption. Further up the section, there are two horizons of debris avalanche deposits forming the coarsest and thickest deposits of the volcaniclastic succession. The debris avalanche deposits indicate at least two different flank collapses coeval with the volcanism. The stratigraphy and map pattern of these volcanic units imply that the northern part of the Bodrum peninsula was the north-facing flank of a stratovolcano during the mid-Late Miocene.

Ground water radon anomalies in Bodrum Peninsula

“…Bodrum magmatic complex are mainly controlled by structural features of upper crust. Most of the faults in that Peninsula are related with volcanic units (Karacık, ).…”

Growth, destruction and volcanic facies architecture of three volcanic centres in the Miocene Uşak–Güre basin, western Turkey: Subaqueous–subaerial volcanism in a lacustrine setting

“…With the exception of a few volcano-stratigraphic studies (Aydar et al, 1998;Karacık and Yılmaz, 1998;Ulusoy et al, 2004;Karacık, 2006), previous works on the western Anatolian volcanics were mainly geochemically oriented (e.g., Yılmaz, 1989;Güleç, 1991;Aldanmaz et al, 2000;Innocenti et al, 2005;Ersoy et al, 2008;Karaoğlu et al, 2010), and focused on post collision-related volcanism at a regional scale, rather than the systematic study of individual volcanic centres (Fig. 1) and their petrology.…”

Volcanic facies of the debris avalanche deposit of Tata Sabaya Volcano, Central Andes.

“…Un depósito de avalancha de detritos puede ser considerado como una facies dentro de la evolución de un edificio volcánico (e.g., Karacik, 2006). A la vez, debido a diferencias composicionales y texturales, este depósito se puede subdividir en distintas facies, las cuales indican cambios de ambiente y en los procesos de depositación existentes entre un sector y otro.…”