A. Tzvetkov
Universiy of Mining and Geology
“St. Ivan Rilski”, Sofia 1700, Bulgaria
E-mail: atzvetkov@hotmail.com
(Received 19 June 2003; accepted 31 October 2003)
Abstract: The low sulfidation
epithermal gold occurrence Ada Tepe is located on the north-eastern border of
the Momchilgrad depression in Eastern
Rhodopes. The use of gravity, aeromagnetic, gamma-ray spectrometric data on
1:50000 scale and electric and magnetic data on 1:10000 scale allows more detailed determination of the Ada Tepe occurrence geological structure to be
obtained. The south-north, east-west, north-west and
east-northeast oriented faults and their knots, as well as the areas of
intensive hydrothermal alterations were marked according to geophysical data.
The main geophysical anomalies
related to the gold-silver-bearing mineralization in Ada Tepe occurrence were separated. Based of the outlined geological,
geophysical and geochemical criteria three areas were
distinguished
favorable for epithermal mineralization prospecting.
Key Words: Gamma-ray Spectrometry Electric profiling, VLF profiling, Radiogeochemical specialization, Hydrothermal alteration, Fault, Gold-silver-bearing Mineralization