西藏米林地区湖积物的磁性特征及其古气候意义

朱宗敏; 寸金鸿; 庞龙飞; 向树元; 陈奋宁; 江尚松

Volume 32 Issue 5

Sep. 2007

Turn off MathJax

Article Contents

Article Navigation > Earth Science > 2007 > 32(5): 622-628

ZHU Zong-min, CUN Jin-hong, PANG Long-fei, XIANG Shu-yuan, CHEN Fen-ning, JIANG Shang-song, 2007. Magnetic Properties of Lacustrine Sediments and Implications for Paleoclimate in Milin Area,Tibet. Earth Science, 32(5): 622-628.

Citation:

PDF( 465 KB)

Magnetic Properties of Lacustrine Sediments and Implications for Paleoclimate in Milin Area,Tibet

1.
Key Laboratory of Biogeology and Environmental Geology, Ministry of Education, Wuhan 430074, China
2.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received Date: 2007-06-19
Publish Date: 2007-09-25

Abstract

Abstract

There are 52.2 m deep-low lacustrine facies and littoral-low lacustrine facies sediments developed at the later stage of late Pleistocene distributed on the third terrace of Yarlung Zangbo river, Milin region, southeast Tibet, indicating that there was a large ancient dammed lake in the Milin region at that time. In order to discuss the paleoclimate and paleoenvironment of this area, we measured some magnetic parameters of 259 directed samples collected from the Milin airport section. The results indicated that most of the samples have original magnetic fabric, and their κ₁ axis indicated the direction of provenance of the Milin ancient dammed lake changed from south and north directions to west and northeast directions, and then to west direction, i. e. a clockwise changing, the changes probably are related to the change in denudation rate induced by differential uplifting of the studied region. The natural remanent magnetization (NRM) and bulk susceptibility (κ) of Milin section have close relationship with particle size and sedimentary facies, which revealed that there are at least four times obvious fluctuates of paleoclimate during later stage of late Pleistocene. The NRM & κ curves of Milin section correspond to IS1-IS6 and IS8 stages of Greenland GISP2 δ¹⁸O ice record and also clearly record the Younger Dryas (YD) event and Heinrich events (H1, H2, H3) , indicating that the climate of Milin region was influence by the global climate system.
- Tibet,
- Milin,
- environmental magnetism,
- paleoclimate

FullText(HTML)

References(44)

References

[1]	Bond, G. C., Lotti, R., 1995. Iceberg discharges into the North Atlantic on millennial time scale during the lastglaciation. Nature, 267: 1005-1010.
[2]	Chen, F. H., Bloemendal, J., Wang, J. M., et al., 1997. High-resolution multi-proxy climate records from Chinese loess: Evidence for rapid climatic changes over the last 75kyr. Palaeogeography, Palaeocl matology, Palaeoecology, 130: 323-335. doi: 10.1016/S0031-0182(96)00149-6
[3]	Chen, S. Y., Wang, S. M., Wu, Y. H., 2006. Sedimentary cycles and paleoenvironmental evolution of the Co Ngoin lake in Tibetan plateau since late Cenozoic. Acta Geoscientica Sinica, 27 (4): 315-322 (in Chinese with English abstract).
[4]	Chen, W. Y., 1980. Natural environment of late Cenozoic in Linzhi basin, Tibet. Vertebrata Palasiatica, 18 (1): 52-58 (in Chinese with English abstract).
[5]	Dansgaard, W., Johnsen, S. J., Clausen, H. B., et al., 1993. Evidence for general instability of past climate from a 250kyr ice-core record. Nature, 364: 218-220. doi: 10.1038/364218a0
[6]	Doner, L., 2003. Late-Holocene paleoenvironments of northwest Iceland from lake Sediments. Palaeogeography, Palaeoclmatology, Palaeoecology, 193: 535-560. doi: 10.1016/S0031-0182(03)00265-7
[7]	Geiss, C. E., Zanner, C. W., 2007. Sediment magnetic signature of climate in modern loessic soils from the Great Plains. Quaternary International, 162: 97-110.
[8]	Gu, Z. Y., Liu, J. Y., Yuan, B. Y., et al., 1993. Monsoonvariation of the Qinghai-Xizang plateau during the last 12 000 years: Geochemical evidence from the sediments in the Silinglake. Chinese Science Bulletin, 38 (1): 61-64 (in Chinese). doi: 10.1360/csb1993-38-1-61
[9]	Han, Z. Y., Li, X. S., 2006. Orbitally tuned time scales basedon climate proxy indicator of grain size distribution in Nihewan basin. Earth Science—Journal of China University of Geosciences, 31 (6): 773-779 (in Chinesewith English abstract).
[10]	Heinrich, H., 1988. Origin and consequence of cyclic ice rafting in the northeast Atlantic ocean during the past 130 000 years. Quaternary Research, 29: 142-152. doi: 10.1016/0033-5894(88)90057-9
[11]	Hu, X. F., Cheng, T. F., Wu, H. X., 2003. Domultiple cyclesof aeolian deposit-pedogenesis exist in the reticulate redclay sections in southern China?Chinese Science Bulletin, 48 (12): 1251-1258.
[12]	Li, H. Y., Zhang, S. H., Fang, N. Q., et al., 2006. Magneticrecords of core MD77-181inthe bay of bengal and their paleo environmental implications. Chinese Science Bulletin, 51 (15): 1884-1893. doi: 10.1007/s11434-006-2057-5
[13]	Liu, Y. P., Montgomnery, D. R., Hallet, B., et al., 2006. Quaternary glacier blocking events at the entrance of Yarlung Zangbo great canyon, southeast Tibet. Quaternary Sciences, 26 (1): 52-62 (in Chinese with English abstract).
[14]	Lu, J., Chen, M. H., 2006. Global climate events since Cenozoic. Journal of Tropical Oceanography, 25 (6): 72-79 (in Chinese with English abstract).
[15]	Montgomery, D. R., Hallet, B., Liu, Y. P., et al., 2004. Evidence for Holocene megafloods down the Tsangpo rivergorge, southeastern Tibet. Quaternary Research, 62 (2): 201-207. doi: 10.1016/j.yqres.2004.06.008
[16]	Oldfield, F., Asioli, A., Accorsi, C. A., et al., 2003. A high resolution late Holocene palaeo environmental record from the central Adriatic sea. Quaternary Science Reviews, 22: 319-342. doi: 10.1016/S0277-3791(02)00088-4
[17]	Peng, Z. C., Zhang, Z. F., Cai, Y. J., et al., 2002. The paleoclimatic records from the late Pleistocene stalagmite in Guizhou Qixing cave. Quaternary Science, 22 (3): 273-282 (in Chinese with English abstract).
[18]	Qin, J. M., Yuan, D. X., Cheng, H., et al., 2005. The Y. D. and climate abrupt events in the early and middle Holocene: Stalagmite oxygen isotope record from Maolan, Guizhou, China. Science in China (Ser. D), 48 (4): 530-537.
[19]	Shen, J., Liu, X. Q., Matsumoto, R., et al., 2004. A high-resolution climatic change since the late Glacial age in-ferred from multi-proxy of sedi ments in Qinghai lake. Science in China (Ser. D), 34 (6): 582-589 (in Chinese).
[20]	Stage, M., 2001. Magnetic susceptibility as carrier of a climatic signal in chalk. Earth and Planetary Science Letters, 188: 17-27. doi: 10.1016/S0012-821X(01)00304-1
[21]	Stuiver, M., Braziunas, T. F., Grootes, P. M., et al., 1997. Is there evidence for solar forcing of climate in the GISP2 oxygen isotope record?Quaternary Research, 48: 259-266.
[22]	Thompson, R., Oldfield, F., 1986. Environmental magnetism. Allen&Unwin, London.
[23]	Xu, T. C., 1989. Magnetic fabrics (Ⅱ). Seismological and Geomagnetic Observation and Research, 10 (3): 72-80 (in Chinese with English abstract).
[24]	Yao, T. D., Thompson, L. G., Shi, Y. F., et al., 1997. Research on climate change since thelast interglacial period from Guliya ice core. Science in China (Ser. D), 27 (5): 447-452 (in Chinese).
[25]	Yin, G. H., Bao, G., Yang, S. S., et al., 2006. The granulitesand ages of the nyingchi group complexin the Nyingchiregion, Xizang. Sedimentary Geology and Tethyan Geology, 26 (3): 8-15 (in Chinese with English abstract).
[26]	Yin, G. H., Yang, S. S., Bao, G., et al., 2005. New knowledge of the Quaternary strata of the Linzhi area, Tibet. Journal of Stratigraphy, 29 (Suppl.): 626-630 (in Chinese with English abstract).
[27]	Zhang, J. Q., Li, C. X., Cong, Y. Z., 1998. Hydrodynamic environment and source of the old tidal sand body in the coastal plain of the northern Jiangsu. Acta Oceanologica Sinica, 20 (3): 82-90 (in Chinese with English abstract).
[28]	Zhu, D. G., Meng, X. G., Zhan, X. T., et al., 2004. Lake-level change of Nam Co, Tibet, since the late Pleistoceneand environment information of clay minerals in lacustrine deposition. Journal of Geomechanics, 10 (4): 300-309 (in Chinese with English abstract).
[29]	Zhu, Z. M., Yang, W. Q., Lin, W. J., et al., 2006. Magneticfabric characteristics and significance of reticulate red earth in Xuancheng profile, Anhui Province. Marine Geology and Quaternary Geology, 26 (4): 105-110 (in Chinese with English abstract).
[30]	陈诗越, 王苏民, 吴艳宏, 2006. 西藏错鄂湖沉积旋回与古环境变迁. 地球学报, 27 (4): 315-322. doi: 10.3321/j.issn:1006-3021.2006.04.005
[31]	陈万勇, 1980. 西藏林芝盆地新生代晚期的自然环境. 古脊椎动物与古人类, 18 (1): 52-58. https://www.cnki.com.cn/Article/CJFDTOTAL-GJZD198001007.htm
[32]	顾兆炎, 刘嘉麒, 袁宝印, 等, 1993.12000年来青藏高原季风变化———色林错沉积物地球化学的证据. 科学通报, 38 (1): 61-64.
[33]	韩志勇, 李徐生, 2006. 泥河湾盆地基于粒度气候指标的轨道调谐时间标尺. 地球科学———中国地质大学学报, 31 (6): 773-779. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200606004.htm
[34]	刘宇平, Montganery, D. R., Hallet, B., 等, 2006. 西藏东南雅鲁藏布大峡谷入口处第四纪多次冰川阻江事件. 第四纪研究, 26 (1): 52-62. doi: 10.3321/j.issn:1001-7410.2006.01.007
[35]	陆钧, 陈木宏, 2006. 新生代主要全球气候事件研究进展. 热带海洋学报, 25 (6): 72-79. doi: 10.3969/j.issn.1009-5470.2006.06.013
[36]	彭子成, 张兆峰, 蔡演军, 等, 2002. 贵州七星洞晚更新世晚期石笋的古气候环境记录. 第四纪研究, 22 (3): 273-282. doi: 10.3321/j.issn:1001-7410.2002.03.011
[37]	沈吉, 刘兴起, Matsumoto, R., 等, 2004. 晚冰期以来青海湖沉积物多指标高分辨率的古气候演化. 中国科学 (D辑), 34 (6): 582-589. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK200406010.htm
[38]	许同春, 1989. 磁组构 (下). 地震地磁观测与研究, 10 (3): 72-80. https://www.cnki.com.cn/Article/CJFDTOTAL-DZGJ198904015.htm
[39]	姚檀栋, Thompson, L. G., 施雅风, 等, 1997. 古里雅冰心中末次间冰期以来气候变化记录研究. 中国科学 (D辑), 27 (5): 447-452. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK199705011.htm
[40]	尹光侯, 包钢, 杨淑胜, 2006. 西藏林芝地区林芝岩群麻粒岩及时代讨论. 沉积与特提斯地质, 26 (3): 8-15. https://www.cnki.com.cn/Article/CJFDTOTAL-TTSD200603001.htm
[41]	尹光侯, 张留青, 包钢, 等, 2005. 西藏林芝地区第四纪新知地层学杂志, 29 (增刊): 626-630.
[42]	张家强, 李从先, 丛友滋, 1998. 苏北陆区古潮成沙体沉积动力环境及物源. 海洋学报, 20 (3): 82-90. doi: 10.3321/j.issn:0253-4193.1998.03.012
[43]	朱大岗, 孟宪刚, 赵希涛, 等, 2004. 西藏纳木错晚更新世以来湖面变化和湖相沉积中粘土矿物显示的环境信息. 地质力学学报, 10 (4): 300-309. doi: 10.3969/j.issn.1006-6616.2004.04.002
[44]	朱宗敏, 杨文强, 林文姣, 等, 2006. 安徽宣城第四纪网纹红土的磁组构特征及其意义. 海洋地质与第四纪地质, 26 (4): 105-110. https://www.cnki.com.cn/Article/CJFDTOTAL-HYDZ200604020.htm