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Paper Information

Journal:   AMIRKABIR   FALL 2007- WINTER 2008 , Volume 18 , Number 67-C; Page(s) 65 To 70.
 
Paper: 

GEOELECTRICAL EXPLORATIONS IN THE GRAPHITE DEPOSIT: A CASE HISTORY AT KHENADAREH-BALA (ARAK)

 
 
Author(s):  SADRI MARYAM, RAMAZI H.R.
 
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Abstract: 

Geoelectrical surveys were carried out in Khenadareh-bala area, Sarband district, Markazi province, Iran for exploration of the graphite veins. In Sarband region, there are some potential areas for graphite mineralization, but most of them are not economical. Geoelectrical surveys were designed in Khenadarehbala area based on the geological evidences and physical properties of graphite. At first, self-potential (SP) method was carried out along 10 N-S profiles with 2 m distance between measuring points. Then, mise-a-la-masse measurements were implemented over there. The prepared self-potential and equipotential maps confirm each other and prove the presence of graphite mineralization with north-northeast trend. After that, resistively measurements were performed over the same profiles using dipole-dipole array (AB=MN=4 m) for more investigation of graphite distribution in the depth. The apparent resistivity pseudo sections indicate that the graphite veins (p<20 Wm) are approximately extended to depth of 25 m where SP profile shows the amplitude about -200 mV. Some excavation such as exploratory pits, well, and trench dug in this surveying area, demonstrate that these veins are discontinuous, thin, and impure.

 
Keyword(s): GRAPHITE, SELF-POTENTIAL (SP), MISE-A-LA-MASSE, ELECTRICAL RESISTIVITY, DIPOLE-DIPOLE ARRAY
 
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