长江中游和尚洞石笋的高分辨率同位素、微量元素记录及古气候研究

黄俊华; 胡超涌; 周群峰; 杨桂芳

长江中游和尚洞石笋的高分辨率同位素、微量元素记录及古气候研究

中国地质大学测试中心,武汉,430074

基金项目: 国家自然科学基金项目(批准号:49772171及40172060)资助

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作者简介:
黄俊华,男,1964年出生,高级工程师,第四纪与环境

中图分类号: P534.63

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Study on High-Resolution Carbon, Oxygen Isotope and Trace Element Records and Paleoclimate from Heshang Cave, the Middle Reach of the Yangtse River

Test Center,China University of Geosciences,Wuhan,430074

摘要

摘要: 通过对长江中游和尚洞HS-2号石笋的沉积特征及C、O同位素Mg、Sr微量元素相结合分析,利用U系法定年,获取了长江中游19.0ka～6.9ka的古气候、古环境信息(平均分辨率为17a,局部分辨率达到7a).得出如下结论(1)19.0～16.6ka, C、O同位素偏轻,气候冷湿;(2)16.6～11.1ka, C、O同位素偏重, 气温上升,降水偏少;(3)11.1～10.3ka 干热时期中的突然回冷事件对应于新仙女木事件(Younger Dryas Event);(4)10.3～6.9 ka B.P δ^18O及δ¹³C值逐渐变轻,而Mg/Sr比继续增大,表现为气温上升,降雨量较大.反映了历史时期湿冷、干热、湿暖交替变化的气候趋势,得出了长江中游千年级和百年级的一些气候变化趋势,特别是发现了新仙女木事件在长江中游洞穴石笋中完整的记录,说明新仙女木事件是全球性气候突变与环境灾变事件
- C、O同位素 /
- 微量元素 /
- 洞穴石笋 /
- 古气候 /
- 新仙女木事件 /
- 长江中游 /
- 和尚洞
Abstract: Through a combined analysis of sedimentary characteristics,C and Oisotopes,Mg and Sr trace elements of a stalagmite from Heshang Cave,Hubei,Wit h urani um-series dating，t he palaeoclimatic and palaeoenvironmental Information from19.0ka to 6.9ka i n the Hubei area is obtained.The average resolution is 17a,and t he local resolution is 7a. The following results are obtained ：(1)f rom 19.0 ~16.6ka B.P. ：C and Oisotopes Were lighter,the climate Was cold and Wet ；(2)16.6 ~11.1kaB.P. ：C，Oisotopes Were a little heavy,temperature rose,r ain fall Was inclined to be little ；(3)11.1 ~10.3ka B.P. ：an excursion during dry and hot period responded to the Younger Dryas Event ；(4)10.3 ~6.9 ka B.P：C，O，I sotopes Were lighter,but Mg/Sr value Was bigger,showing temperature Was continuously rising and rain f all Was greater. These reflect the variation tends from humid-cold climate，to dry- hot climate，and to humid,War mcli mate in history,and some climatic variation trends of thousand years and hundred years cycles are gainned. I n particular the authors found out the integrated record of the Younger Dryas Event Which means the Younger Dryas Event is a globally climatic sudden change and environmental calamity.
- carbon and oxygen isotopes /
- trace element /
- stalagmite /
- paleoclimate /
- Younger Dryas Event /
- the middle reach of the Yangtse River /
- Heshang Cave

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参考文献(16)

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长江中游和尚洞石笋的高分辨率同位素、微量元素记录及古气候研究

作者简介:
黄俊华,男,1964年出生,高级工程师,第四纪与环境

计量

Study on High-Resolution Carbon, Oxygen Isotope and Trace Element Records and Paleoclimate from Heshang Cave, the Middle Reach of the Yangtse River

计量

目录

长江中游和尚洞石笋的高分辨率同位素、微量元素记录及古气候研究

中国地质大学测试中心,武汉,430074

作者简介:
黄俊华,男,1964年出生,高级工程师,第四纪与环境

English Abstract

Study on High-Resolution Carbon, Oxygen Isotope and Trace Element Records and Paleoclimate from Heshang Cave, the Middle Reach of the Yangtse River

Test Center,China University of Geosciences,Wuhan,430074

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长江中游和尚洞石笋的高分辨率同位素、微量元素记录及古气候研究

作者简介: 黄俊华,男,1964年出生,高级工程师,第四纪与环境

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Study on High-Resolution Carbon, Oxygen Isotope and Trace Element Records and Paleoclimate from Heshang Cave, the Middle Reach of the Yangtse River

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出版历程

目录

长江中游和尚洞石笋的高分辨率同位素、微量元素记录及古气候研究

中国地质大学测试中心,武汉,430074

作者简介: 黄俊华,男,1964年出生,高级工程师,第四纪与环境

English Abstract

Study on High-Resolution Carbon, Oxygen Isotope and Trace Element Records and Paleoclimate from Heshang Cave, the Middle Reach of the Yangtse River

Test Center,China University of Geosciences,Wuhan,430074

全文HTML

目录

友情链接

期刊在线

联系我们

作者简介:
黄俊华,男,1964年出生,高级工程师,第四纪与环境

作者简介:
黄俊华,男,1964年出生,高级工程师,第四纪与环境