| 重庆地区江北砾岩北碚附中剖面 磁化率特征及其环境意义 |
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| 引用本文： | 熊平生,谢世友,何多兴,莫心祥.重庆地区江北砾岩北碚附中剖面 磁化率特征及其环境意义[J].物探与化探,2006,30(2):115-118. |
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| 作者姓名： | 熊平生 谢世友 何多兴 莫心祥 |
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| 作者单位： | 1. 西南师范大学,资源与环境科学院,重庆,400715;武汉理工大学,资源与环境工程学院,湖北,武汉,430070
2. 西南师范大学,资源与环境科学院,重庆,400715 |
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| 摘 要： | 选取砾岩层填穴物、砾石层局部胶结填穴物、砂岩层新鲜岩石作为分析样品,运用了磁化率值、14C测年、磁铁矿含量、氧同位素分析等方法进行测定和研究。结果表明,江北砾岩北碚附中剖面,磁化率值的变化与磁性铁矿含量有较好的一致性,磁化率曲线与氧同位素曲线变化特征具有较好的对应性。江北砾岩北碚附中剖面岩层的磁化率能指示晚更新世晚期的环境变化,包含了2个较短的暖湿期和3个较长的冷干时期,而干冷时期内又存在很短暖湿期。
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| 关 键 词： | 砾岩 磁化率 氧同位素 古环境 |
| 文章编号： | 1000-8918（2006）02-0115-04 |
| 收稿时间： | 04 26 2005 12:00AM |
| 修稿时间： | 2005-04-26 |
MAGNETIC SYSCEPTIBILITY CHARACTERISTICS OF JIANGBEI CONGLOMERATE IN CHONGQING AREA AND THEIR ENVIRONMENTAL SIGNIFICANCE |
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| XIONG Ping-sheng,XIE Shi-you,HE Duo-xing,MO Xin-xiang.MAGNETIC SYSCEPTIBILITY CHARACTERISTICS OF JIANGBEI CONGLOMERATE IN CHONGQING AREA AND THEIR ENVIRONMENTAL SIGNIFICANCE[J].Geophysical and Geochemical Exploration,2006,30(2):115-118. |
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| Authors: | XIONG Ping-sheng XIE Shi-you HE Duo-xing MO Xin-xiang |
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| Institution: | 1. Academy of Resource and Environmental Science, Southwest China Normal University, Chongqing 400715, China;2. School of resources and Environmental Engineering, Wuhan University of Technology , Wuhan 430070, China |
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| Abstract: | The materials filled in the cave of conglomerate,part of cemented materials of sandstone and fresh rocks of sandstone were analyzed by magnetic susceptibility values,carbon 14,magnetic iron mineral content and ~(18)O isotope.It is concluded that the magnetic susceptibility values of the Jiangbei conglomerate in Fuzhong of Beibei are consistent with the content of magnetic iron mineral.The characteristics of the magnetic susceptibility curve are similar to those of the oxygen isotope curve.The magnetic susceptibility of Jiangbei conglomerate in Fuzhong of Beibei can indicate the ancient climate change: the last stage of last pleistocene epoch experienced two relatively short warm-humid periods and three comparatively long dry-cool periods,but in the dry-cool periods there exists very short warm-humid time. |
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| Keywords: | Jiangbei conglomerate magnetic susceptibility isotope of ^18O ancient environment |
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