| 辽宁本溪晶花洞洞穴特征及形成时代 |
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| 引用本文： | 秦亚,程新民,常建平,平智岚.辽宁本溪晶花洞洞穴特征及形成时代[J].世界地质,2011,30(3):375-380. |
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| 作者姓名： | 秦亚 程新民 常建平 平智岚 |
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| 作者单位： | 吉林大学地球科学学院，长春130061 |
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| 摘 要： | 辽宁本溪晶花洞发育于中奥陶世马家沟组(O2m)厚层灰岩中，主要受近SN、NE断裂控制，沿近SN断裂发育高度不同的4层洞穴。洞内沉积物以化学沉积为主，机械沉积较少。通过测定洞内外的温度、湿度及CO2含量，对比研究发现洞穴封闭性较好，与外界大气循环较差。在与洞外干河河流阶地的高程及形成时代上的对比研究基础上，结合主洞所采年龄样的铀系法测年(111.5±5.3 ka)，初步推断晶花洞主洞发育于晚更新世。
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| 关 键 词： | 晶花洞 洞穴特征 化学沉积 形成时代 本溪 辽宁 |
Characteristics and age of Jinghua Caves in Benxi of Liaoning |
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| QIN Ya,CHENG Xin-min,CHANG Jian-ping,PING Zhi-lan.Characteristics and age of Jinghua Caves in Benxi of Liaoning[J].World Geology,2011,30(3):375-380. |
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| Authors: | QIN Ya CHENG Xin-min CHANG Jian-ping PING Zhi-lan |
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| Institution: | College of Earth Sciences，Jilin University，Changchun 130061，China |
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| Abstract: | The Jinghua Caves are exposed in thick limestone of Middle Ordovician Majiagou Formation in Benxi of Liaoning,which controlled mainly by near SN and NE faults,and compose of four-layer caves with different levels along near SN fault.The sediments in the caves are dominated by chemical deposition with scarce mechanical deposition.By measuring the temperature,humidity and CO_2 contents inside and outside the caves,the analysis shows that the closeness of the caves is good and the air circulation with the outs... |
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| Keywords: | Jinghua Caves cave characteristics chemical deposition formation age Benxi Liaoning Province |
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