Akademik Veri Yönetim Sistemi
Uluslararası Katılımlı 77. Türkiye Jeoloji Kurultay, Ankara, Türkiye, 14 - 18 Nisan 2025, ss.1, (Özet Bildiri)
Magnetic
susceptibility and conductivity surveys are widely used to identify rock
lithological changes, soil quality, and pollution (both atmospheric and
human-related). These methods are favored for their cost-effectiveness, energy
efficiency, and simplicity.
This
study aims to determine the magnetic properties of igneous rocks, classified
into five groups, on the northern side of Horseshoe Island (Antarctica). Rock
samples were collected from 22 locations, covering five distinct lithologies.
Measurements of magnetic susceptibility and conductivity were conducted at 1 cm
vertical intervals, resulting in 828 recorded values.
The
data, analyzed at three levels (top, overall, and bottom), were used to
differentiate between surface/atmospheric and mineralogical origins of the
rocks. The results indicated that gabbro had the highest average susceptibility
(3.91 × 10⁻³ CGS), while granitic gneiss showed zero susceptibility in all
measurements. Conversely, granitic gneiss exhibited the highest conductivity
values (116 S/m), whereas gabbro displayed the lowest conductivity (18.6 S/m).
Spatially, susceptibility variations followed a northeast-southwest trend,
particularly noticeable near the Turkish Scientific Station. High
susceptibility was observed near Base Y (Former Britihs Base), while low values
were concentrated around Gaul Cove. The findings highlight lithological
differences, though snow and glacier cover limited precise boundary
determinations. No significant differences were observed between surface and
depth averages, suggesting mineral content influences exceed pollution effects.