| 河北平原第四系深层地下水36Cl同位素年龄的研究 |
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| 引用本文： | 董悦安,何明,等.河北平原第四系深层地下水36Cl同位素年龄的研究[J].地球科学,2002,27(1):105-109. |
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| 作者姓名： | 董悦安 何明 |
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| 作者单位： | [1]北京师范大学低能核物理研究所，北京100875 [2]中国原子能科学研究院核物理研究所，北京102413 |
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| 基金项目： | 国家自然科学基金项目 (No .4980 2 0 2 5 ) |
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| 摘 要： | 为研究河北平原第四系深层地下水的年龄，应用加速器质谱计对河北平原深层地下水样品的N(^36Cl)/N(Cl)进行了测定，计算了其年龄，并与地下水动力学年龄进行了对比研究。结果表明，河北冲洪积平原山前地带保定市第四系第三和第四含水组的地下水年龄皆很小，为近期补给的地下水。中部地带保定地区东部和沧州地区西部的第三含水组地下水年龄皆小于5万a，第四含水组地下水的年龄可能大于10万a。边缘地带沧州市和青县第三含水组地下水年龄为8－9万a左右，东光县为26万a左右；沧州市第四含水组地下水年龄为33万a左右，东光县为77万a左右。
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| 关 键 词： | ^36Cl同位素年龄 加速器质谱计 河北平原 氯同位素 地下水 第四系 |
| 文章编号： | 1000-2383(2002)01-0105-05 |
Chlorine-36 Age Study for Deep Groundwater of Quaternary Sediments, Hebei Plain |
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| Dong Yuean ,,He Ming ,Jiang Songsheng ,Wu Shaoyong ,Jiang Shan.Chlorine-36 Age Study for Deep Groundwater of Quaternary Sediments, Hebei Plain[J].Earth Science-Journal of China University of Geosciences,2002,27(1):105-109. |
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| Authors: | Dong Yuean He Ming Jiang Songsheng Wu Shaoyong Jiang Shan |
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| Institution: | Dong Yuean 1,2,3,He Ming 4,Jiang Songsheng 4,Wu Shaoyong 4,Jiang Shan 4 |
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| Abstract: | For the study of the groundwater age in the deep formation of Quaternary sediments of Hebei plain, the N ( 36 Cl)/ N (Cl) ratio of groundwater samples were determined by tandem accelerator mass spectrometry. The chlorine 36 ages were compared with hydrodynamic ages. The groundwater of the third and fourth aquifers of Quaternary sediments in the Baoding district of Hebei plain was found young, that of the third aquifer in the east of Baoding district and the west of Cangzhou district being less than 50 thousand years and that of the fourth aquifer, perhaps more than 100 thousand years. While the groundwater age of the third aquifer in Cangzhou city and Qingxian county was 80-90 thousand years and that in Dongguang county was 260 thousand years, that of the fourth aquifer in Cangzhou city was 330 thousand years and that in Dongguang county was 770 thousand years. |
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| Keywords: | chlorine 36 age accelerator mass spectrometry Hebei plain |
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