Gabbroic rocks crop out commonly in different localities of the
Central Anatolian Crystalline
Complex and are interpreted by many researchers as the remnants of a
Neotethyan ophiolitic suite now
observed as roof-pendants in the granitoids of the complex. In this
study, the structural position of the gabbroic
rocks within one of the granitoids of the Central Anatolian Crystalline
Complex, namely the Ağaçören
Granitoid, is determined by geological and aeromagnetic data from the
central part of the pluton. The gabbroic
rocks have sinuous contacts with the Ağaçören Granitoid
and they display a gradual change in composition
and texture from gabbro at the top of the hills to diorite at the foot
of the
hills towards the contact with
granitoid. Power spectra, high- and low-pass filtered aeromagnetic and
pseudogravimetric anomalies were
produced using geophysical methods. A two-dimensional model constructed
from
the high pass-filtered
anomalies, with the control of the in situ susceptibility data
and the low-pass filtered anomaly, suggests existence
of a shallow conical-shaped and deeply buried gabbroic body. The deep body
extends down to deeper
levels of the upper crust and, given the textural and compositional features
which suggest magma mixing, is
interpreted as an intrusion coeval with the Ağaçören
Granitoid.
INVESTIGATION OF THE STRUCTURAL TRENDS THROUGH AEROMAGNETIC DATA FOR THE CENTRAL ANATOLIAN CRYSTALLINE COMPLEX (KIRSEHIR BLOCK), TURKEY
