新疆石油地质 ›› 1995, Vol. 16 ›› Issue (3): 212-216.

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天山地区地球物理场特征的几点认识

王宜昌   

  1. 石油地球物理勘探局 河北源州 072751
  • 收稿日期:1995-05-15 出版日期:1995-09-01 发布日期:2021-01-15
  • 作者简介:高级工程师 石油物探

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

Wang Yichang   

  1. Petroleum Geohysical Exploration Bureau, Zhuozhou, Hebei 012751
  • Received:1995-05-15 Online:1995-09-01 Published:2021-01-15
  • About author:Senior Engineer, Geophysical Prospecting

摘要: 分析天山地区地球物理场特征发现,前震旦系基岩出露区磁场多为平缀负值区,优地槽裂谷区不仅具有一般的高磁、高密度、高电阻的岩石特征,更具有“上延不衰”的重要特征,这可区别于造山缝合带和古老基岩出露区。据此,笔者认为,准噶尔盆地安集海地区有一南北走向的磁力高,并具有“上延不衰”的特点,应该是裂谷的反映。

关键词: 天山地区, 前震旦纪, 地层, 地球物理异常, 裂谷, 造山缝合带

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