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| 150 ka BP以来巴丹吉林沙漠东南区域地层序列的新研究 | |
| 引用本文： | 李保生,高全洲,阎满存,李云卓,董光荣,温小浩.150 ka BP以来巴丹吉林沙漠东南区域地层序列的新研究[J].中国沙漠,2005,25(4):457-465. |
| 作者姓名： | 李保生 高全洲 阎满存 李云卓 董光荣 温小浩 |
| 作者单位： | 1. 华南师范大学,地理系,广东,广州,510631;中国科学院地球环境研究所,黄土与第四纪地质国家重点实验室,陕西,西安,710061 2. 中山大学,地理系,广东,广州,510275 3. 北京高技术信息研究所,北京,100085 4. 华南师范大学,地理系,广东,广州,510631 5. 中国科学院寒区旱区环境与工程研究所,甘肃,兰州,730000 |
| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX2SW118)，国家重点基础研究发展计划(973计划)项目(2004CB720206)共同资助 |
| 摘 要： | 巴丹吉林沙漠东南部边缘查格勒布鲁剖面中更新统/上更新统下部、上更新统下部/上更新统上部和上更新统上部/全新统的地质界线依次发生在59AGS/60L、39FD/40G和9L/10FD之沉积界面上。其时限依次大致为150kaBP、75kaBP和10kaBP,该剖面记录了150kaBP以来25个旋回的沙漠与湖相等沉积交替变更的历史过程。通过该剖面粒度和SiO2、Al2O3、Fe2O3、FeO在地层中的分布特征、软体动物化石指示的古生态等综合研究表明,所述这些沉积旋回是自那时以来,在北半球冰期间冰期气候波动影响下,冬夏古季风往复更迭所导致的非季风沙区沙漠期与间沙漠期多次正逆交替演变的结果。 |
| 关 键 词： | 巴丹吉林沙漠 查格勒布鲁剖面 150ka 25次沙漠期 古季风变迁 |
| 文章编号： | 1000-694X(2005)04-0457-09 |
| 修稿时间： | 2005年1月7日 |
A Recent Study on Sedimentary Sequence of Southeastern Badain Jaran Desert since 150 ka BP |
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| LI Bao-sheng,GAO Quan-zhou,YAN Man-cun,LI Yun-zhuo,DONG Guang-rong,WEN Xiao-hao.A Recent Study on Sedimentary Sequence of Southeastern Badain Jaran Desert since 150 ka BP[J].Journal of Desert Research,2005,25(4):457-465. | |
| Authors: | LI Bao-sheng GAO Quan-zhou YAN Man-cun LI Yun-zhuo DONG Guang-rong WEN Xiao-hao |
| Institution: | LI Bao-sheng~ |
| Abstract: | The geological boundaries of the-Middle-Pleistocene/the-Upper-Pleistocene, Lower the-Upper-Pleistocene/Upper the-Upper-Pleistocene and Upper the-Upper-Pleistocene /Holocene in Chagelebulu section, situated at the southeastern of the Badain Jaran Desert, take place at the deposition interfaces of 59AGS/60L, 39FD/40G and 9L/10FD respectively and their time boundaries are roughly at 150 ka BP, 75 ka BP and 10 ka BP in turn. The study shows that the section has recorded 25 cycles of alternative change processes between desert and lacustrine depositions since 150 ka BP. Comprehensive study shows, by distribution characteristics of the grain-size and SiO_(2), Al_(2)O_(3), Fe_(2)O_(3), FeO in layers in the section and palaeoecology indicated by fossil mollusks, that the sedimentary cycles were products of many times of normal and reversal alternation evolutions between desert and inter-desert periods in the non-monsoon sandy land caused by vicissitudinary winter and summer monsoons under influence of glacial and interglacial climates in the Northern Hemisphere from that time on. |
| Keywords: | Badain Jaran Desert Chagelebulu section past 150 ka 25 times of desert periods paleo-monsoon vicissitude |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |