黑龙江省五大连池火山机构与干热岩地球物理场特征
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摘要
五大连池是第四纪形成后期经多次喷发形成的火山群,为干热岩勘查开发选址,开展了新一轮地球物理勘查,笔者在五大连池近年完成的重磁勘查资料基础上,结合大地电磁探测和地震层析成像的成果,对已有重磁勘查资料重新认识再解释。通过重磁场对比,着重探讨了重磁场反映的尾山中心式喷发形成火山穹窿构造、岩浆囊的动力机制和地质背景,有别于笔架山—老黑山裂隙式喷发的特征,据此,可为五大连池火山机构研究和探讨深部存在干热岩提供地球物理信息和依据。
Wudalianchi consists of volcanoes formed in late Quaternary multiple eruption. For the purpose of selecting site for hot dry rock exploration and development,a new round of geophysical exploration was launched. Based on complete magnetic survey data obtained in Wudalianchi in recent years,in combination of magnetotelluric surveying and seismic tomography results,the authors re-understood and explained the existing magnetic exploration data. By a comparison with gravity and magnetic field,the authors emphatically investigated Weishan central type eruption formation volcanic dome structure,magmatic sac dynamic mechanism and geological background reflected by gravity and magnetic field,whose characteristics are different from features of Bijiashan-Laoheishan fissure eruptions. Therefore,the results obtained by the authors can provide geophysical information and evidence for studying and discussing the existence of hot dry rock in the deep part of Wudalianchi volcanic edifice.
Wudalianchi consists of volcanoes formed in late Quaternary multiple eruption. For the purpose of selecting site for hot dry rock exploration and development,a new round of geophysical exploration was launched. Based on complete magnetic survey data obtained in Wudalianchi in recent years,in combination of magnetotelluric surveying and seismic tomography results,the authors re-understood and explained the existing magnetic exploration data. By a comparison with gravity and magnetic field,the authors emphatically investigated Weishan central type eruption formation volcanic dome structure,magmatic sac dynamic mechanism and geological background reflected by gravity and magnetic field,whose characteristics are different from features of Bijiashan-Laoheishan fissure eruptions. Therefore,the results obtained by the authors can provide geophysical information and evidence for studying and discussing the existence of hot dry rock in the deep part of Wudalianchi volcanic edifice.
引文
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[19]张风雪,吴庆举,李永华.中国东北地区远震S波走时层析成像研究[J].地球物理学报,2014,57(1):88-101.
[2]芦少春.五大连池地热研究[J].黑龙江科技学院学报,2013,23(4):386-393.
[3]吕宗文.五大连池火山群的构造环境与喷发机理[J].东北地震研究,1996,12(1):25-30.
[4]吕宗文,孙盛杰.五大连池火山与冷泉[J].地震地磁观测与研究,1996,17(6):75-79.
[5]石卓,金旭,管彦武.内蒙赤峰热水镇地球物理勘查[J].地球物理进展,2010(6):2168-2173.
[6]詹艳,赵国泽,白登海,等.黑龙江五大连池火山群大地电磁探测和研究初步结果[J].地质论评,1999,45(增刊):400-407.
[7]詹艳,赵国泽,王继军,等.黑龙江五大连池火山群地壳电性结构[J].岩石学报,2006,22(6):1494-1502.
[8]汤吉,邓前辉,赵国泽.长白山天池火山区电性结构和岩浆系统[J].地震地质,2001,23(2):191-200.
[9]韩湘君,金旭,孙春晖.内蒙古阿尔山温泉热结构[J].地球学报,2001,22(3):259-264.
[10]姜枚,王秀琨,王德夫.五大连池火山区的地球物理特征[J].中国地质科学院矿床地质研究所所刊,1986(2):213-221.
[11]郑开鄂.中心型火山构造的动力学机制[J].地质科学,1982,(1):64-70.
[12]佟伟,穆治国,刘时彬.中国晚新生代火山和现代高温水热系统[J].地球物理学报,1990,33(3):329-335.
[13]姜枚,谭捍东,张聿文,等.云南腾冲火山构造区马站—固东岩浆囊的地球物理模式[J].地球学报,2012,33(5):731-739.
[14]杨海亮,杨外名.AMT法五大连池碳酸矿泉水勘查中的应用[J].地质与勘探,2015,51(4):757-763.
[15]刘嘉麒.中国火山[M].北京:科学出版社,1999.
[16]李兆麟,吴启志,蒋浩深等.某些岩浆岩成岩温度测定[J].地质科学,1982(1):80-87.
[17]夏林圻.论五大连池火山岩浆演化[J].岩石学报,1990(1):13-29.
[18]邵济安,张文兰.演化中的裂谷带—五大连池火山岩带[J].地学前缘,2008,15(6):241-250.
[19]张风雪,吴庆举,李永华.中国东北地区远震S波走时层析成像研究[J].地球物理学报,2014,57(1):88-101.