Akademik Veri Yönetim Sistemi
ASIAN SEISMOLOGICAL COMMISSION 15. GENERAL ASSEMBLY, Antalya, Türkiye, 3 - 07 Kasım 2024, ss.207-211
The Kula Volcanic Province (KVP) in western Anatolia, part of a geologically active region characterised by lithospheric extension and asthenospheric upwelling, exhibits significant
magmatic and tectonic interactions since the Early Miocene. This study, for the first time, utilises a magnetotelluric (MT) survey to investigate the spatial distribution of magma chambers and partial
melt zones beneath the KVP. 3-D inversion of MT data revealed multiple conductive zones, with resistivity values as low as 3-5 Ωm, extending from depths of 5 km to 30 km. These tabular and
spherical compartments suggest an ongoing magmatic process linked to regional extensional tectonics. Our findings indicate that these low-resistivity zones correspond to partially molten
magma storages, potentially triggered by decompression melting of the asthenospheric mantle associated with the lithospheric tear. Exhumation of the Menderes Massif Core Complex (MMCC)
likely acts as a mechanical pathway for propagating the magma from depths to the upper crustal region. The eruption of magma to the surface during the Quaternary resulted in the Kula basaltic
volcanism. According to MT studies, there are at least 8 melt zones throughout the crust, the largest of which, the C1 low resistivity zone, occurs at depths of up to 5 km along a detachment fault
associated with the north-dipping Menderes Massif. This region, characterised by high thermal constraints, also appears to be at risk of the recurrence of volcanic activity that occurred several thousand
years ago.