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蒙山国家地质公园拦马墙砾石堆积体暴露测年研究
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引用本文:张志刚,梅静,张梦媛,王立志.2018.蒙山国家地质公园拦马墙砾石堆积体暴露测年研究[J].地质论评,64(5):1217-1224
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作者单位E-mail
张志刚 1)南京师范大学地理科学学院 南京2100232)虚拟地理环境教育部重点实验室(南京师范大学)南京 210023
3)江苏省地理环境演化国家重点实验室培育建设点
南京 2100234)江苏省地理信息资源开发与利用协同创新中心南京210023
5)中国科学院西北生态环境资源研究院冰冻圈国家重点实验室
兰州 730000 
zhangzhigang840620@126.com 
梅静 1)南京师范大学地理科学学院 南京2100232)虚拟地理环境教育部重点实验室(南京师范大学)南京 210023
3)江苏省地理环境演化国家重点实验室培育建设点
南京 2100234)江苏省地理信息资源开发与利用协同创新中心南京210023 
wanglizhi@lyu.edu.cn 
张梦媛 1)南京师范大学地理科学学院 南京2100232)虚拟地理环境教育部重点实验室(南京师范大学)南京 210023
3)江苏省地理环境演化国家重点实验室培育建设点
南京 2100234)江苏省地理信息资源开发与利用协同创新中心南京210023 
 
王立志 6) 山东省水土保持与环境保育重点实验室临沂大学资源环境学院 山东临沂 276000  
基金项目:本文为国家自然科学基金资助项目(编号: 41503054);中国博士后科学基金面上资助项目(编号:2015M582728);江苏省高校优势学科建设工程资助项目(编号:164320H116);山东省水土保持与环境保育重点实验室开放基金项目(编号: STKF201601)和山东省自然科学基金联合专项(编号: ZR2018LD004)的成果。
中文摘要:山东蒙山国家地质公园佛塔谷堆积了大量的巨砾,其形成原因存在着很大的争论。探讨蒙山佛塔谷砾石堆积体的形成年代有助于了解蒙山环境演化和气候变化。关于佛塔谷砾石的微地貌已有相关作者探讨,本文在前人研究的基础上从拦马墙砾石堆积体的宇生核素10Be暴露年代以及全新世以来的气候环境和人类文化等方面进行探讨。研究结果表明:(1)拦马墙砾石宇生核素10Be暴露年代结果为5.0~6.0 ka左右,不支持先前发表的“8.2 ka拦马冰期”的结论;(2)全新世以来山东蒙山区域处于一个暖湿的环境下,尽管有几次降温事件,但是不足以提供形成冰川的条件。
中文关键词:蒙山,蒙山国家地质公园  拦马墙  宇生核素10Be暴露测年  砾石堆积体
 
10Be Exposure Ages of the Boulder in Lanmaqiang (Wall for Blocking Horses) ,Fota Valley, Mengshan National Geopark
NameInstitution
ZHANG Zhigang1) School of Geographical Sciences, Nanjing Normal University, Nanjing, 210023;2) Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing, 210023;3) State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing, 210023;4) Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023;5) State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000
MEI Jing1) School of Geographical Sciences, Nanjing Normal University, Nanjing, 210023;2) Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing, 210023;3) State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing, 210023;4) Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023
ZHANG Mengyuan1) School of Geographical Sciences, Nanjing Normal University, Nanjing, 210023;2) Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing, 210023;3) State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing, 210023;4) Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, 210023
WANG Lizhi6) Shandong Provincial Key Laboratory of Soil Conservation and Environmental Protection, Linyi University, Linyi 276000
Abstract:There are a lot of huge boulders in the Lanmaqiang ( means wall for blocking horses) , Fota (means Pagoda) Valley in the Mengshan Mountain, Mengshan National Geopark, Shandong Province. There is a big debate about the reasons for its formation. It is helpful to understand the formation of gravel deposits in the Fota Valley, Mengshan Mountain, to understand the environmental evolution and climate change in Mengshan Mountain area. The writers have discussed the micro geomorphology of gravel in Fota Valley. This article focuses on the in situ terrestrial cosmogenic nuclide (TCN) 10Be exposure dating of Lanmaqiang boulders deposits and the climate environment and human culture of Shandong Province since the Holocene . The results of the study indicate that: (1) The 10Be exposure ages of the Lanmaqiang boulders were about 5.0 ka, which does not support the conclusion of the previously published “8.2 ka Lanma glacial periods ”; (2)since Holocene, the Mengshan Mountain area of Shandong Province was in a warm and humid environment. Despite several cooling events, it was not enough to provide the conditions for the formation of glaciers.
keywords:Mengshan Mountain, Mengshan National Geopark  Lanmaqiang  in situ terrestrial cosmogenic nuclide (TCN) 10Be exposure dating  boulders deposits
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