Yk. Kadioglu et al., STRUCTURAL INTERPRETATION OF GABBROIC ROCKS IN AGACOREN GRANITOID, CENTRAL TURKEY - FIELD OBSERVATIONS AND AEROMAGNETIC DATA, Geological Magazine, 135(2), 1998, pp. 245-254
Gabbroic rocks crop out commonly in different localities of the Centra
l Anatolian Crystalline Complex and are interpreted by many researcher
s as the remnants of a Neotethyan ophiolitic suite now observed as roo
f-pendants in the granitoids of the complex. In this study, the struct
ural position of the gabbroic rocks within one of the granitoids of th
e Central Anatolian Crystalline Complex, namely the Agacoren Granitoid
, is determined by geological and aeromagnetic data from the central p
art of the pluton. The gabbroic rocks have sinuous contacts with the A
gacoren 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 p
roduced using geophysical methods. A two-dimensional model constructed
from the high pass-filtered anomalies, with the control of the in sit
u susceptibility data and the low-pass filtered anomaly, suggests exis
tence 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, i
s interpreted as an intrusion coeval with the Agacoren Granitoid.