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| 华南老红砂沉积年代学及其环境意义：以福建青峰老红砂为例 | |
| 引用本文： | 靳建辉,李志忠,雷国良,凌智永,姜锋,申健玲,刘秀铭.华南老红砂沉积年代学及其环境意义：以福建青峰老红砂为例[J].地理科学,2017,37(2):301-310. |
| 作者姓名： | 靳建辉 李志忠 雷国良 凌智永 姜锋 申健玲 刘秀铭 |
| 作者单位： | 1. 福建师范大学地理研究所,福建 福州 350007 2. 福建师范大学地理科学学院,福建 福州 350007 3. 湿润亚热带生态地理过程教育部重点实验室,福建 福州 350007 4. 中国科学院青海盐湖研究所,青海 西宁 810008 |
| 基金项目： | 国家自然科学基金项目（41301012,41271031）;国家自然科学基金委员会-福建省人民政府促进海峡两岸科技合作联合基金（U1405231）资助 |
| 摘 要： | 对福建海坛岛青峰老红砂进行了系统的光释光测年研究,结合已发表的相关测年数据,在统一的时间标尺上探讨了老红砂发育过程及其与海平面变化和东亚季风变化之间的关系。结果表明：① QFS剖面沉积年龄为110~33 ka,起始发育年龄延伸到了末次间冰期。主要涵盖了MIS5c~MIS3阶段,其中存在4个快速堆积期。结合已发表的年代学数据进行综合分析,认为前人得出的老红砂发育在末次冰期以来的结论需要得到修正。② 华南老红砂发育过程与区域海平面变化密切相关。在末次间冰期和末次冰期均有发育,高海面（>-50 m）或较高海面（-50~-70 m）时期是老红砂普遍发育期。区域地壳运动叠加海平面变化造成闽南和闽东北老红砂的沉积差异：海退过程中的较高海面时期北部先发生快速堆积;海侵过程中的较高海面时期南部先发生快速堆积。LGM（海平面<-70 m）期,老红砂不发育。③ 老红砂在冰期-间冰期尺度上的沉积速率体现了源区气候和海平面变化对老红砂物源输送的双重制约。 |
| 关 键 词： | 老红砂 OSL测年 环境剂量率 海平面 |
| 收稿时间： | 2016-01-05 |
| 修稿时间： | 2016-04-20 |
Chronology and Environmental Significance of Old Red Sand in South China：Take the Old Red Sand in Qingfeng,Fujian as An Example |
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| Jianhui Jin,Zhizhong Li,Guoliang Lei,Zhiyong Ling,Feng Jiang,Jianling Shen,Xiuming Liu.Chronology and Environmental Significance of Old Red Sand in South China：Take the Old Red Sand in Qingfeng,Fujian as An Example[J].Scientia Geographica Sinica,2017,37(2):301-310. | |
| Authors: | Jianhui Jin Zhizhong Li Guoliang Lei Zhiyong Ling Feng Jiang Jianling Shen Xiuming Liu |
| Institution: | 1.Institute of Geography, Fujian Normal University, Fuzhou 350007,Fujian,China 2.School of Geography Science, Fujian Normal University, Fuzhou 350007, Fujian,China 3. Key Laboratory of Humid Subtropical Ecosystem and Geography, Ministry of Education, Fuzhou 350007, Fujian,China 4.Qinghai Institute of Salt Lake, Chinese Academy of Sciences, Xining 810008,Qinghai,China |
| Abstract: | In this article, luminescence chronology of ‘Old Red Sand’(ORS) in Haitan Island are discussed in Fujian Province. Combined with the published OSL data, the development process of ORS and the relationship between the process and the change of sea-level and East Asia Monsoon(EAM) are discussed on the standard chronology. The results show that, the development age of QFS section is 110-33 ka, of which the initial development age extend to the Last Interglacial period which mainly covers Marine Isotope Stage(MIS)5c-MIS3, and there are 4 stages of rapid accumulation. We hold opinion that the conclusions of other researches, who consider ORS is the aeolian sediment since the last glacial period, should be corrected. 2) The development process of ORS in South China is closely tied with the change of regional sea-level. ORS of South China is broadly forming at the Last Interglacial period and the Last glacial period, of which high (the height of sea-level is between -70 m and -50 m) or higher(the height of sea-level is more than -50 m) sea-level is one of important premises. Synthetic impact of regional crustal uplift and sea-level change creates the diversity of sedimentary rate of ORS of South China: there is a rapid accumulation in upstate firstly at the high or higher sea-level period of the regressive process, and there is a rapid accumulation in south area firstly at the high or higher sea-level period of the process of marine transgression. At the same time, its a remarkable face that the sediment is absent at the period of Last Glacial Maximum(LGM) (the height of sea-level is under -70 m ). 3) The depth-age pattern of ORS reflects not merely the control action of solar radiation on east Asian winter monsoon but also the change of global ice volume which is the response of solar radiation. 4) The variation of ORS material source of South China are changed with glacial-interglacial cycle, and the main part of ORS is the regional response to the global climate change, especially the East Asia Winter Monsoon(EAWM), meanwhile there are secondary response process of global sea-level change and regional structure. Sedimentary rate of ORS mainly embodied the double restriction of climate and sea level changes on conveying of material source. |
| Keywords: | Old Red Sand OSL dating dose rate sea-level |
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