青藏高原锡铁山—格尔木—亚东剖面地温分布特征

以青藏高原锡铁山—格尔木—亚东剖面作为研究对象,测定不同深度土层的温度。结果表明,除北部柴达木地块地温高出其它地块外,该剖面总体上呈现出青藏高原各地块地温状况南高北低的现象:以拉萨—冈底斯地块的地温为最高,其次为喜马拉雅地块,北部的羌塘地块、可可西里-巴颜喀拉地块、昆仑地块的地温依次降低。测量结果较好地对应于各地块及断裂带的划分,断裂带温度明显高出相邻低温地块温度,并且以狮泉河—雅鲁藏布江断裂带为最高。该试验方法较好地反映了青藏高原热活动状况,为青藏高原热动力学研究提供了依据。

Geothermal Distribution Characteristics of the Xitieshan-Golmud-Yadong Profile in the Qinghai-Tibet Plateau

Geothermometry of the Xitieshan-Golmud-Yadong profile in Qinghai-Tibet Plateau shows that the highest temperature is found in the northern Chadum Basin and the geothermal temperature of the massifs in the Qinghai-Tibet Plateau has an increasing tendency from north to south.In the Plateau,the temperature of the Lahsa-Gangdisi massif is the highest,the Himalayas massif comes next,and then the Qiangtang,Kekexili-Bayankela and the Kunlun massif.The geothermometry measurements coincide well with the division of each massif and the fault boundaries.Temperature at the faults is obviously higher than the adjacent massifs,and the temperature at the Shiquanhe-Yalu Tsangpo River fault is the highest.The research on the geothermal state of the Qinghai-Tibet Plateau lays an important foundation for the study of geothermal dynamics in the Qinghai-Tibet Plateau.