摘要
用各种水化学组分的月动态形式特点，论证了含水地层内水岩作用对地热水氧同位素组成的影响不大；用地质方法检验了地热１４Ｃ测年数据的可靠性。利用地热水的测年数据和氧同位素测值作关系曲线，曲线清楚反映出最后一次冰期以来古气候的干冷、湿热变化，无论在变化趋势还是变化转折时间上，都与黄土、深海沉积、青藏湖区显示出的古气候记录能够一一对应。
Low-temperature geothermal water is in fact ancient precipitation which circulates deeply through underground and contains information about paleoclimate variation. In the northern part of the North China Plain,in general,the geothermal water is of 40-60℃ and of 500-1500m below the ground surface. Based on regime pattern of various aquatic chemistry,the author has documented that the interaction between rock and water within the reservoirs has little impact on oxygen isotopic composition of geothermal water. The author has also examined the reliability of it data of geothermal water with geological criteria. Based on 14C and oxygen isotopic data of 40 geothermal water from literature,a relation curve has been completed,showing the paleoclimatic dry-cold or wet-warm changes since last glacial period. That tendency and turning time of the paleoclimate change coincide with some paleoclimate records from loess, deep sea deposits and lacustrine deposits at Qinghai-Tibet Platheu.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1995年第4期383-388,共6页
Earth Science-Journal of China University of Geosciences
关键词
全球变化
地下水
古气候记录
华北
地热水
global change,paleoclimate record of groundwater,geothermal water of North China.
