用1∶5万磁异常特征圈定贵州水城—艾家坪地区成矿靶区
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摘要
对1∶5万高精度磁异常原始资料数据处理,进行化极、延拓计算7个不同上延高度异常,分析对比所有资料,结合地物化资料,对磁异常平面进行特征分区。又根据已知的白马洞(区内)—杉树林(区外)铅锌矿床成矿带及区内异处的铅锌、铜、锰等矿床(点)的成矿规律和分布特点,圈定了8个异常成矿靶区,19个大型的浅层局部负磁异常,均为有一定找矿意义的磁异常,并推测它们可能为岩体与矿致磁异常(铅锌、铜、锰、铁)等综合引起,在岩体(浅表隐伏的花岗岩珠或岩枝)与围岩接触带、层间破碎带上,应是赋矿的有利部位。
It did data process to the 1∶50,000 high-accuracy magnetic abnormality original information,by reduction and continuation,it calculated the height abnormality of different upward continuations.It analyzed and contract all the information,combine with geological,physical and chemical prospecting information,did character distribution to the magnetic abnormality contact.According to the metallogenic regulation and distribution rule of the lead-zinc deposit in Baimadong(in)-Shanshulin(out) and the abnormal lead-zinc,cooper and manganese deposit in this area,it delineated 7 a6bnormality target areas,19 big scale shallow partial magnetic abnormalities,all of them have some prospecting significance.It also infers that that may be caused by magnetic abnormality of rock mass and deposit.It should be the beneficial position of ore occurrence on the rock mass,rock wall contact and interlayer cracked belt.
It did data process to the 1∶50,000 high-accuracy magnetic abnormality original information,by reduction and continuation,it calculated the height abnormality of different upward continuations.It analyzed and contract all the information,combine with geological,physical and chemical prospecting information,did character distribution to the magnetic abnormality contact.According to the metallogenic regulation and distribution rule of the lead-zinc deposit in Baimadong(in)-Shanshulin(out) and the abnormal lead-zinc,cooper and manganese deposit in this area,it delineated 7 a6bnormality target areas,19 big scale shallow partial magnetic abnormalities,all of them have some prospecting significance.It also infers that that may be caused by magnetic abnormality of rock mass and deposit.It should be the beneficial position of ore occurrence on the rock mass,rock wall contact and interlayer cracked belt.
引文
[1]贵州省地质局.贵州省区域地质志[M].北京:地质出版社,1987.
[2]王亮,乔计花,龙超林.黔西北威—赫—纳—织—水地区铅锌(铜)矿带上重力异常反映的地质信息[J].物探与化探,2008,32(4):374-379.
[3]杨瑞西,许国丽,司法祯,马振波.用磁异常特征圈定张家山成矿靶区[J].物探与化探,2008,32(4):358-362.
[4]洪万华,严学春.贵州威宁县摆布卡铅锌矿床特征及找矿前景浅析[J].物探与化探,2008,32(5):545-548.
[2]王亮,乔计花,龙超林.黔西北威—赫—纳—织—水地区铅锌(铜)矿带上重力异常反映的地质信息[J].物探与化探,2008,32(4):374-379.
[3]杨瑞西,许国丽,司法祯,马振波.用磁异常特征圈定张家山成矿靶区[J].物探与化探,2008,32(4):358-362.
[4]洪万华,严学春.贵州威宁县摆布卡铅锌矿床特征及找矿前景浅析[J].物探与化探,2008,32(5):545-548.
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