UNDERSTANDING OF THE CHAR ACTERISTICS OF GEOPHYSI-CAL FIELD IN TIANSH AN MOUNTAINS AREA

Abstract

Abstract: Based on the analysis of geophysical field characteristics in Tiansha nmoun-tains area, it is found that most magnetic field of base rockou tcrop area (pre-Sinian) is in gently negative value area; eugeosyncline rift area not only possesses general rock charac-teristics of high magnetic, high density and high resistivity, but also possesses the impor-tant characteristics of no magnetic attenuation du ring u pwa rd conti nuation. These can be used to distinguish from orogenic stylolitic zone and ancient base rock outcrop area. So it is considered that there is a NS striking magnetic high in Anjihai area of Junggar basin, with no magnetic attenuation and should be response of the rift.

Key words: Tianshan mountains area, Pre-Sinian, Strata, Geophysical anomaly, Rift, Orogenic stylolitic zone

Wang Yichang. UNDERSTANDING OF THE CHAR ACTERISTICS OF GEOPHYSI-CAL FIELD IN TIANSH AN MOUNTAINS AREA[J]. Xinjiang Petroleum Geology, 1995, 16(3): 212-216.

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UNDERSTANDING OF THE CHAR ACTERISTICS OF GEOPHYSI-CAL FIELD IN TIANSH AN MOUNTAINS AREA

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