鄂尔多斯及其周缘地热分布的某些特征
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摘要
利用鄂尔多斯及其周缘的大地热流、地温梯度和地温分布等资料研究了其展布特征和差异性变化，并讨论了地热分布与地壳深浅构造的关系。认为，鄂尔多斯块体内大地热流、地温梯度值整体偏低，而其周缘地区则呈现出环状高值异常带。该区地震活动主要集中分布在鄂尔多斯周缘地区，即鄂尔多斯周缘存在着高热流、高地温梯度和地震丛集分布相统一的现象。这一现象说明，地热和地震活动之间存在着某种必然的联系。
By using data for geothermal flow,geotemperature gradient and geothermal distribution,the distribution feature and difference are studied and the relationship of geothermal distribution with the shallow and deep structures of the crust is discussed in this paper. It is suggested that the values of geothermal flow and geotemperature gradient in Ordos block are lower,while a ring high anomaly belt appears in the vicinity of the block. The earthquake activities distribute mainly in the periphery of Ordos, that is to say,high heat flow, high geotemperature gradient and distribution of earthquakes in clusters are consistent in the vicinity of Ordos, indicating that a certain relationship exists between the geotherm and the earthquake activity.
By using data for geothermal flow,geotemperature gradient and geothermal distribution,the distribution feature and difference are studied and the relationship of geothermal distribution with the shallow and deep structures of the crust is discussed in this paper. It is suggested that the values of geothermal flow and geotemperature gradient in Ordos block are lower,while a ring high anomaly belt appears in the vicinity of the block. The earthquake activities distribute mainly in the periphery of Ordos, that is to say,high heat flow, high geotemperature gradient and distribution of earthquakes in clusters are consistent in the vicinity of Ordos, indicating that a certain relationship exists between the geotherm and the earthquake activity.
引文
1邓起东，尤惠川．鄂尔多斯同缘断陷盆地带的构造活动特征及其形成机制．现代地壳运动研究（1）．地震出版社，1985．58～78．2汪集，黄少鹏．中国大陆地区大地热流数据汇编（第二版）．地震地质，1990，12（4）：351～366．3张心敖，等．南北地震带北段地温场的初步探讨．西北地震学报，1987，9（1）：26～32．4王钧，等．中国地温分布的基本特征．地震出版社，1990．5王春华，等．鄂尔多斯断块区构造活动的动力学条件与地震关系的模似研究．现代地壳运动研究（2）地震出版社，1986．6［苏］莫伊谢迎科，等．地热研究与应用．地震出版社，1990．
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