他念他翁山中段第四纪冰川沉积物时空分布特征与环境

doi:10.18306/dlkxjz.2019.06.011

摘要/Abstract

摘要：

他念他翁山中段位于横断山脉西部,保留着良好的第四纪冰川遗迹,论文以该地区第四纪冰川沉积物为主要研究对象,通过光释光(Object-source lighting, OSL)测年、粒度、磁化率、矿物及化学元素分析等方法,探讨研究区第四纪冰川沉积物在不同时期的沉积学、矿物学、环境磁学以及元素地球化学特征,结合相关环境指标分析该区的环境特点。研究表明：① 冰川沉积物总体沉积特征是大小混杂、无层理、无分选、风化程度由倒数第二次冰期到新冰期依次减弱。② 研究区冰川沉积物细粒部分在粒度频率曲线上主要呈现双峰或多峰,反映出沉积物的物质来源复杂、形成动力多样。冰碛物的平均粒径在空间上表现出距冰川作用源头越远粒径越小的规律,主要是受冰川作用强度和风化时间长短的影响。③ 冰川沉积物的磁化率值为8.72×10^-8~298.00×10^-8m³·kg^-1,其中冰水沉积物磁化率的平均值(178.51×10^-8m³·kg^-1)和波动幅度(17.43×10^-8~298.00×10^-8m³·kg^-1)要大于冰碛物(平均值19.82×10^-8m³·kg^-1,波动幅度8.72×10^-8~42.95×10^-8m³·kg^-1),反映出磁铁矿集中分布的粒级与冰水沉积物组成的粒级相似。④ 地球化学和矿物学指标反映青古隆地区古气候的总体特征为寒冷干燥,其中在末次冰盛期时气候最为干旱,末次冰期中冰阶时气候较为干旱、降水量相对于末次冰盛期有所增加,倒数第二次冰期降水量相对于末次冰盛期和末次冰期中冰阶较多,但气温较低。

关键词: 光释光测年, 粒度, 磁化率, 化学元素, 矿物学, 冰川沉积物, 他念他翁山中段

Abstract:

Vestige of the Quaternary glaciation is well preserved in the middle Tenasserim Chain located in the west of the Hengduan Mountains. In this study, we investigated Quaternary glacial deposits in this area using the methods of luminescence dating, grain size, magnetic susceptibility, and mineral and chemical elements analyses, discussing the characteristics of sedimentology, mineralogy, environmental magnetism, and element geochemistry aspects of Quaternary glacial deposits during different periods in the study area. We also combined the related environmental indicators to analyze the environmental characteristics of this area. The results display that: 1) The overall sedimentary characteristics of glacial sediments are mixed size, no bedding, no sorting, and the degree of weathering weakened from the MIS6 to the MIS1. 2) Fine particles of glacial deposits in the study area show bimodal and multimodal spectra in frequency curves, which reflects that glacial deposits have complex sources. The average grain size of moraines shows that the farther away from the source of glaciation, the smaller the grain size-it was mainly affected by the intensity of glaciation and the duration of weathering. 3) The magnetic susceptibility of glacial deposits in the study area ranges from 8.72×10^-8m³·kg^-1to 298.00×10^-8m³·kg^-1. The average value (178.51×10^-8m³·kg^-1) and amplitude of fluctuation (17.43×10^-8-298.00×10^-8m³·kg^-1) of the magnetic susceptibility of ice water deposits are greater than moraines (average value: 19.82×10^-8m³·kg^-1, amplitude of fluctuation: 8.72×10^-8-42.95×10^-8m³·kg^-1), which reflects that the grain size of centralized distribution of magnetite is similar to the grain size of ice water deposits. 4) The analysis of geochemical indicators of elements and minerals show that the overall characteristics of the paleoclimate in the Qinggulong area was cold and dry; the climate was the driest during the MIS2, but precipitation of the MIS3b was higher. The precipitation of MIS6 was more than the MIS2 and MIS3b, but the temperature was lower.

Key words: luminescence dating, grain size, magnetic susceptibility, chemical element, mineral, glacier deposits, the middle Tenasserim Chain

张威, 唐倩玉. 他念他翁山中段第四纪冰川沉积物时空分布特征与环境[J]. 地理科学进展, 2019, 38(6): 904-917.

Wei ZHANG, Qianyu TANG. Spatiotemporal characteristics and the environment of Quaternary glacier deposits in the middle Tenasserim Chain[J]. PROGRESS IN GEOGRAPHY, 2019, 38(6): 904-917.

图/表 16

图1

图2

表1

表2

表3

图3

图4

图5

表4

表5

表6

表7

图6

表8

表9

表10

参考文献 53

[1]	陈安东, 顾佳妮, 赵志中, 等. 2016. 云南大理点苍山末次冰期冰碛物石英砂扫描电镜形态特征分析[J]. 冰川冻土, 38(2): 453-462. doi: 10.7522/j.issn.1000-0240.2016.0051
	[Chen A D, Gu J N, Zhao Z Z, et al.2016. Quartz grains SEM surface microtextures of Quaternary glacial sediments along the Diancang Mountain in Yunnan, Southwest China. Journal of Glaciology and Geocryology, 38(2): 453-462. ] doi: 10.7522/j.issn.1000-0240.2016.0051
[2]	陈福忠, 廖国兴. 1983. 昌都地区地质基本特征 [M]// 青藏高原地质文集. 北京: 地质出版社.
	[Chen F Z, Liao G X.1983. The basic geological characteristics in Qamdo district//Contribution to the Geology of the Qinghai-Xizang (Tibet) Plateau. Beijing, China: Geological Publishing House. ]
[3]	陈仁容, 周尚哲, 邓应彬. 2012. 末次冰期冰碛垄系列的形态特征及其形成探讨: 以帕隆藏布江谷地为例[J]. 冰川冻土, 34(4): 836-847.
	[Chen R R, Zhou S Z, Deng Y B.2012. Morphological characteristics of glacial deposits during the Last Glaciation: Taking the Parlung Zangbo River basins as an example. Journal of Glaciology and Geocryology, 34(4): 836-847. ]
[4]	崔之久, 杨健夫. 1999. 中国台湾高山第四纪冰川之确证[J]. 科学通报, 44(20): 2220-2224.
	[Cui Z J, Yang J F.1999. Confirmation of the Quaternary Glacier in Taiwan, China. Chinese Science Bulletin, 44(20): 2220-2224. ]
[5]	崔之久, 易朝路. 1994. 天山和阿尔泰山冰碛物显微结构特征[J]. 应用基础与工程科学学报, 2(4): 313-319.
	[Cui Z J, Yi C L.1994. Microfabric study of till at Mountains Tianshan and Altay. Journal of Basic Science and Engineering, 2(4): 313-319. ]
[6]	杜德文, 石学法, 孟宪伟, 等. 2003. 黄海沉积物地球化学的粒度效应[J]. 海洋科学进展, 21(1): 78-82.
	[Du D W, Shi X F, Meng X W, et al.2003. Geochemical granularity effect of sediment in the Yellow Sea. Advances in Marine Science, 21(1): 78-82. ]
[7]	方谦, 洪汉烈, 赵璐璐, 等. 2018. 风化成土过程中自生矿物的气候指示意义[J]. 地球科学, 43(3): 753-769.
	[Fang Q, Hong H L, Zhao L L, et al.2018. Climatic implication of authigenic minerals formed during pedogenic weathering processes. Earth Science, 43(3): 753-769. ]
[8]	冯连君, 储雪蕾, 张启锐, 等. 2003. 化学蚀变指数(CIA)及其在新元古代碎屑岩中的应用[J]. 地学前缘, 10(4): 539-544.
	[Feng L J, Chu X L, Zhang Q R, et al.2003. CIA (chemical index of alteration) and its applications in the Neoproterozoic clastic rocks. Earth Science Frontiers, 10(4): 539-544. ]
[9]	高由禧, 蒋世逵, 张谊光, 等. 1984. 西藏气候 [M]. 北京: 科学出版社.
	[Gao Y X, Jiang S K, Zhang Y G, et al.1984. Tibet climate. Beijing, China: Science Press. ]
[10]	胡恩, 易朝路, 李艳军. 2010. 珠穆朗玛峰绒布河谷冰碛地貌测量与演化研究[J]. 冰川冻土, 32(2): 316-324.
	[Hu E, Yi C L, Li Y J.2010. Observation and evolution investigation of the moraine geomorphology in the Rongbuk Valley of Mount Qomolangma. Journal of Glaciology and Geocryology, 32(2): 316-324. ]
[11]	胡守云, 邓成龙, Appel E, 等. 2001. 湖泊沉积物磁学性质的环境意义[J]. 科学通报, 46(17): 1491-1494.
	[Hu S Y, Deng C L, Appel E, et al.2001. Environmental significance of magnetic properties of lake sediments. Chinese Science Bulletin, 46(17): 1491-1494. ]
[12]	康建成. 1989. 贡巴冰川边缘冰碛垄特征与形成过程[J]. 冰川冻土, 11(2): 172-176.
	[Kang J C.1989. Grain-size characteristics of glacial debris, and explanation of the processes of glacial transports and sediments at the Gongba Glaciers in Mt. Gongga. Journal of Glaciology and Geocryology, 11(2): 172-176. ]
[13]	李全莲, 张成龙, 武小波, 等. 2015. 中国西部冰川冰尘的粒度及矿物组成[J]. 山地学报, 33(2): 166-172.
	[Li Q L, Zhang C L, Wu X B, et al.2015. Grain size distribution and mineral components of cryoconites of glaciers in Western China. Mountain Research, 33(2): 166-172. ]
[14]	李亚兵, 易朝路, 魏灵, 等. 2006. 慕士塔格新冰期以来冰碛物风化成土特征[J]. 冰川冻土, 28(3): 355-359.
	[Li Y B, Yi C L, Wei L, et al.2006. Grain-size features and magnetic susceptibility characteristic of the surfacelayer of the Moraines in the Muztag Ata. Journal of Glaciology and Geocryology, 28(3): 355-359. ]
[15]	刘耕年, 张跃, 傅海荣, 等. 2009. 贡嘎山海螺沟冰川沉积特征与冰下过程研究[J]. 冰川冻土, 31(1): 68-74.
	[Liu G N, Zhang Y, Fu H R, et al.2009. Sedimentary characteristics and subglacial processes of the glacial deposits in Hailuogou Glacier, Gongga Mountain. Journal of Glaciology and Geocryology, 31(1): 68-74. ]
[16]	刘亮. 2012. 云南千湖山第四纪冰川作用与环境演变 [D]. 大连: 辽宁师范大学.
	[Liu L.2012. Quaternary glaciations and the environmental evolution in Qianhu Mountain of Yunnan Province. Dalian, China: Liaoning Normal University. ]
[17]	刘亮. 2017. 阿尔泰山喀纳斯河谷第四纪冰川地貌演化与年代学研究 [D]. 大连: 辽宁师范大学.
	[Liu L.2017. Quaternary glacial landforms evolution and geochronology in the Kanas River valley, Altai Mountains, China. Dalian, China: Liaoning Normal University. ]
[18]	刘雯雯, 徐鹏, 朱海峰, 等. 2015. 藏东南地区树轮冰川学研究进展[J]. 第四纪研究, 35(5): 1238-1244. doi: 10.11928/j.issn.1001-7410.2015.05.20
	[Liu WW, Xu P, Zhu H F, et al.2015. A review on dendroglaciology study in southeast Tibetean Plateau. Quaternary Sciences, 35(5): 1238-1244. ] doi: 10.11928/j.issn.1001-7410.2015.05.20
[19]	潘保田, 陈发虎. 1997. 青藏高原东北部15万年来的多年冻土演化[J]. 冰川冻土, 19(2): 124-132.
	[Pan B T, Chen F H.1997. Permafrost evolution in the northeastern Qinghai-Tibetan Plateau during the last 150000 years. Journal of Glaciology and Geocryology, 19(2): 124-132. ]
[20]	秦蕴珊. 1987. 东海地质 [M]. 北京: 科学出版社.
	[Qin Y S.1987. East China Sea geology. Beijing, China: Science Press. ]
[21]	邵菁清, 杨守业. 2012. 化学蚀变指数(CIA)反映长江流域的硅酸盐岩化学风化与季风气候?[J]. 科学通报, 57(11): 933-942.
	[Shao J Q, Yang S Y.2012. Does chemical index of alteration (CIA) reflect silicate weathering and monsoonal climate in the Changjiang River basin? Chinese Science Bulletin, 57(11): 933-942. ]
[22]	施雅风, 姚檀栋. 2002. 中低纬度MIS 3b (54~44ka BP) 冷期与冰川前进[J]. 冰川冻土, 24(1): 1-9.
	[Shi Y F, Yao S D.2002. MIS 3b (54-44 ka BP) cold period and glacial advance in middle and low latitudes. Journal of Glaciology and Geocryology, 24(1): 1-9. ]
[23]	苏珍, 蒲健辰. 1966. 横断山冰川发育条件、数量及形态特征 [M]// 李吉均. 横断山冰川. 北京: 科学出版社.
	[Su Z, Pu J C.1966. Development conditions, number and morphological characteristics of glaciers in the Hegnduan Mountains region // Li J J. Glaciers in the Hengduan Mountains. Beijing, China: Science Press. ]
[24]	唐领余, 沈才明, Kam B L, 等. 1999. 南亚古季风的演变: 西藏新的高分辨率古气候记录[J]. 科学通报, 44(18): 2004-2007.
	[Tang L Y, Shen C M, Kam B L, et al.1999. Evolution of the ancient monsoon in South Asia: Tibet's new high-resolution paleoclimatic record. Chinese Science Bulletin, 44(18): 2004-2007. ]
[25]	唐领余, 王睿, 孔昭宸. 1983. 西藏东南部若果冰川的孢粉分析[J]. 植物学报, 25(2): 75-82, 111.
	[Tang L Y, Wang R, Kong Z C.1983. Pollen analytical investigation of the Ruoguo glacier in southeast Xizang. Journal of Integrative Plant Biology, 25(2): 75-82, 111. ]
[26]	王国庆, 石学法, 刘焱光, 等. 2007. 长江口南支沉积物元素地球化学分区与环境指示意义[J]. 海洋科学进展, 25(4): 408-418.
	[Wang G Q, Shi X F, Liu Y G, et al.2007. Study on geochemical province of bottom sediment elements from south branch of the Changjiang River estuary. Advances in Marine Science, 25(4): 408-418. ]
[27]	王建, 刘泽纯, 姜文英, 等. 1996. 磁化率与粒度、矿物的关系及其古环境意义[J]. 地理学报, 51(2): 155-163.
	[Wang J, Liu Z C, Jiang W Y, et al.1996. A relationship between susceptibility and grain-size and minerals, and their paleo-environmental implications. Acta Geographica Sinica, 51(2): 155-163. ]
[28]	王立伦, 王平, 苏珍, 等. 1989. 横断山冰川地球化学特征[J]. 地理研究, 8(3): 66-77.
	[Wang L L, Wang P, Su Z, et al.1989. Geochemical features of the glaciers in Hengduan Mountains. Geographical Research, 8(3): 66-77. ]
[29]	吴积善, 康志成, 田连权, 等. 1990. 云南蒋家沟泥石流观测研究 [M]. 北京: 科学出版社.
	[Wu J S, Kang Z C, Tian L Q, et al.1990. Observation and study on debris flow in Jiangjiagou, Yunnan. Beijing, China: Science Press. ]
[30]	徐树建, 丁新潮, 倪志超. 2014. 山东埠西黄土剖面沉积特征及古气候环境意义[J]. 地理学报, 69(11): 1707-1717.
	[Xu S J, Ding X C, Ni Z C.2014. The sedimentary characteristics of Buxi loess profile in Shandong Province and their paleoclimatic and palaeoenvironment significance. Acta Geographica Sinica, 69(11): 1707-1717. ]
[31]	袁方, 谢远云, 詹涛, 等. 2017. 地球化学组成揭示的杜蒙沙地化学风化和沉积再循环特征及其对风尘物质贡献的指示[J]. 地理科学, 37(12): 1885-1893.
	[Yuan F, Xie Y Y, Zhan T, et al.2017. Source-area weathering and recycled sediment for Dumeng sandy land inferred from geochemistry compositions: Implication for contribution to aeolian dust. Scientia Geographica Sinica, 37(12): 1885-1893. ]
[32]	张威, 柴乐. 2016. 他念他翁山中段第四纪冰川作用ESR定年初步研究[J]. 冰川冻土, 38(5): 1281-1291.
	[Zhang W, Chai L.2016. The preliminary study of the Quaternary glacier in middle part of the Tenasserim Chain with ESR dating method. Journal of Glaciology and Geocryology, 38(5): 1281-1291. ]
[33]	张威, 崔之久, 李永化. 2016. 青藏高原东缘第四纪冰川发育特征与机制 [M]. 大连: 大连海事大学出版社.
	[Zhang W, Cui Z J, Li Y H.2016. Characteristics and mechanism of Quaternary glaciers in the eastern margin of the Qinghai-Tibet Plateau. Dalian, China: Dalian Maritime University Press. ]
[34]	张威, 李媛媛, 冯骥, 等. 2012. 青藏高原东缘山地古冰川沉积物磁化率特点及其影响因素分析[J]. 地理科学进展, 31(11): 1415-1425. doi: 10.11820/dlkxjz.2012.11.001
	[Zhang W, Li Y Y, Feng J, et al.2012. Magnetic susceptibility of glacial deposits and the impacting factors in the eastern bordering mountains of the Tibetan Plateau. Progress in Geography, 31(11): 1415-1425. ] doi: 10.11820/dlkxjz.2012.11.001
[35]	张子洋, 闫明, 刘连文, 等. 2017. 北极新奥尔松全新世冰碛物物理化学特征及环境意义[J]. 第四纪研究, 37(2): 293-306.
	[Zhang Z Y, Yan M, Liu L W, et al.2017. Physical and chemical characteristics of holocene moraines from NY-Alesund, Arctic and their environment implications. Quaternary Sciences, 37(2): 293-306. ]
[36]	Björck S, Dearing J A, Jonsson A.2010. Magnetic susceptibility of Late Weichselian deposits in southeastern Sweden[J]. Boreas, 11(1): 99-111.
[37]	Dearing J A.1994. Environmental magnetic susceptibility using the bartington MS2 system [M]. Kenilworth, UK: Chi Publishing: 52-55.
[38]	Dixon J B, Weed S B, Dinauer R C.1989. Minerals in soil environments[J]. Soil Science, 150(2): 171.
[39]	Evans D J A, Owen L A, Roberts D.2010. Stratigraphy and sedimentology of Devensian (Dimlington Stadial) glacial deposits, east Yorkshire, England[J]. Journal of Quaternary Science, 10(3): 241-265.
[40]	Krylov A A, Andreeva I A, Vogt C, et al.2008. A shift in heavy and clay mineral provenance indicates a middle Miocene onset of a perennial sea ice cover in the Arctic Ocean[J]. Paleoceanography, 23(1): PA1S06, 1-10.
[41]	Jacobson A D, Blum J D, Walter L M.2002. Reconciling the elemental and Sr isotope composition of Himalayan weathering fluxes: Insights from the carbonate geochemistry of stream waters[J]. Geochimica et Cosmochimica Acta, 66(19): 3417-3429. doi: 10.1016/S0016-7037(02)00951-1
[42]	Landim P M, Frakes L A.1968. Distinction between tills and other diamictons based on textural characteristics[J]. Journal of Sedimentary Petrology, 38(4): 1213-1223.
[43]	Liu Z, Colin C, Li X, et al.2010. Clay mineral distribution in surface sediments of the northeastern South China Sea and surrounding fluvial drainage basins: Source and transport[J]. Marine Geology, 277(1): 48-60. doi: 10.1016/j.margeo.2010.08.010
[44]	Mclennan S M.1993. Weathering and global denudation[J]. Journal of Geology, 101(2): 295-303. doi: 10.1086/648222
[45]	Nesbitt H W, Young G M.1982. Early proterozoic climates and plate motions inferred from major element chemistry of lutites[J]. Nature, 299: 715-717. doi: 10.1038/299715a0
[46]	Nesbitt H W, Young G M.1984. Prediction of some weathering trends of plutonic and volcanic rocks based on thermodynamic and kinetic considerations[J]. Geochimica et Cosmochimica Acta, 48(7): 1523-1534. doi: 10.1016/0016-7037(84)90408-3
[47]	Nordt L C, Driese S D.2010. New weathering index improves paleorainfall estimates from vertisols[J]. Geology, 38(5): 407-410. doi: 10.1130/G30689.1
[48]	Proust D, Eymery J P, Beaufort D.1986. Supergene vermiculitization of a magnesian chlorite: Iron and magnesium removal processes[J]. Clays & Clay Miner, 34(5): 572-580.
[49]	Sheldon N D, Tabor N J.2009. Quantitative paleoenvironmental and paleoclimatic reconstruction using paleosols[J]. Earth Science Reviews, 95(1): 1-52. doi: 10.1016/j.earscirev.2009.03.004
[50]	Varga A, Újvári G, Raucsik B.2011. Tectonic versus climatic control on the evolution of a loess-paleosol sequence at Beremend, Hungary: An integrated approach based on paleoecological, clay mineralogical, and geochemical data[J]. Quaternary International, 240(1-2): 71-86. doi: 10.1016/j.quaint.2010.10.032
[51]	Wang Q, Yang S.2013. Clay mineralogy indicates the Holocene monsoon climate in the Changjiang (Yangtze River) Catchment, China[J]. Applied Clay Science, 74(3): 28-36. doi: 10.1016/j.clay.2012.08.011
[52]	Wentworth C K, Chester K.1922. A scale of grade and class terms for clastic sediments[J]. Journal of Geology, 30(5): 377-392. doi: 10.1086/622910
[53]	Zhao X, Zheng B, Qin Y, et al.2010. Grain size effect on PBDE and PCB concentrations in sediments from the intertidal zone of Bohai Bay, China[J]. Chemosphere, 81(8):1022-1026. doi: 10.1016/j.chemosphere.2010.09.007

样品编号	经度/E	纬度/N	海拔/m	深度/m	沉积物性质
RQ-01	96°30′12.27″	30°45′01.27″	5096	1.0	冰碛物
RQ-02	96°30′19.58″	30°45′03.77″	5081	0.8	冰碛物
RQ-03	96°30′42.23″	30°45′11.66″	5016	0.6	冰碛物
RQ-04	96°32′36.76″	30°46′12.61″	4910	0.5	冰碛物
RQ-05	96°33′10.48″	30°48′17.48″	4770	0.5	冰碛物
RQ-06	96°35′17.63″	30°52′14.01″	4662	1.1	冰碛物
BD-01	97°07′07.72″	30°25′45.91″	5243	0.9	冰碛物
BD-02	97°07′24.75″	30°26′32.76″	5010	1.1	冰碛物
BD-03	97°08′20.17″	30°26′41.32″	4809	1.2	冰碛物
BD-04	97°08′23.16″	30°27′12.43″	4682	0.8	冰碛物
BD-05	97°09′20.53″	30°28′48.01″	4405	1.3	冰碛物
BD-07	97°08′46.41″	30°30′27.79″	4330	1.5	冰碛物
RQ-07	96°36′11.50″	30°51′52.96″	4596	2.1	冰水沉积物
JQ-01	96°53′32.96″	30°34′16.35″	4598	2.5	冰水沉积物
JQ-02	96°53′36.07″	30°34′10.22″	4612	2.0	冰水沉积物
JQ-03	96°53′34.33″	30°34′16.17″	4600	1.6	冰水沉积物
JQ-04	96°53′33.22″	30°38′29.00″	4525	1.7	冰水沉积物
JQ-05	96°53′19.10″	30°38′29.00″	4495	1.2	冰水沉积物
BD-06	97°05′31.02″	30°29′56.94″	4472	1.1	冰水沉积物
BD-08	97°09′58.69″	30°30′26.57″	4380	1.3	冰水沉积物

样品	海拔 /m	采样点	深度 /m	性质	U /(mg·ka^-1)	Th /(mg·ka^-1)	K/%	含水量/%	年剂量率 /(GY·ka^-1)	等效剂量/GY	年代/ka
OSL-04	4644	97°08′19.99″E 30°27′05.12″N	0.65	细砂、粉砂	2.56	12.0	1.54	0.59	3.428	59.30±4.30	17.30±1.25
OSL-05	4867	97°08′04.04″E 30°26′35.42″N	0.7	细砂、粉砂	2.80	12.9	1.47	0.93	3.476	109.06±12.10	31.38±3.48
OSL-06	4922	97°07′44.36″E 30°26′34.54″N	1.0	细砂、粉砂	2.83	13.0	1.71	3.80	3.645	93.97±7.20	25.78±1.98

样品编号	<2.0 μm 粘粒/%	2.0~63 μm 粉砂级/%	>63 μm 砂级/%	平均值(M_z) /μm	标准差 (σ_i)	偏度 (S_k)	峰态 (K_g)
RQ-01	0.60	8.99	90.41	493.12	2.00	0.44	0.93
RQ-02	1.46	23.92	74.62	137.74	2.10	0.08	1.18
RQ-03	3.28	29.32	67.40	111.11	2.55	0.34	0.86
RQ-04	3.73	28.9	67.37	107.32	2.56	0.51	0.82
RQ-05	1.29	15.84	82.87	213.16	2.00	0.32	1.25
RQ-06	1.65	28.75	69.60	111.11	2.19	0.15	1.03
BD-01	2.83	32.76	64.40	121.58	2.66	0.33	0.78
BD-02	3.78	36.82	59.40	86.57	2.66	0.18	0.92
BD-03	3.28	26.57	70.15	118.26	2.43	0.34	1.07
BD-04	2.98	31.53	65.49	125.87	2.66	0.27	0.81
BD-05	4.13	47.78	48.09	59.54	2.62	0.05	0.96
BD-07	2.58	52.98	44.44	55.94	2.53	-0.13	0.85
冰碛物平均值	2.63	30.35	67.02	145.11	2.41	0.24	0.96
RQ-07	0.50	9.38	90.11	257.03	1.46	0.19	1.08
JQ-01	0.52	2.94	96.54	226.88	0.94	-0.05	0.94
JQ-02	2.43	51.26	46.31	51.12	1.30	0.29	1.16
JQ-03	1.49	18.32	80.19	188.16	2.02	0.31	1.10
JQ-04	0.25	3.24	96.50	360.98	1.11	0.27	0.96
JQ-05	0.40	6.95	92.65	299.37	1.40	0.14	0.93
BD-06	0.81	10.66	88.53	309.93	1.68	0.37	1.10
BD-08	1.66	38.92	59.42	100.83	2.47	0.13	0.81
冰水沉积物平均值	1.01	17.71	81.28	224.29	1.55	0.21	1.01
平均值	1.98	25.29	72.72	176.78	2.07	0.23	0.98

样品编号	低频磁化率/(10^-8m³·kg^-1)	高频磁化率/(10^-8m³·kg^-1)	频率磁化率/%
RQ-01	8.72	8.62	1.15
RQ-02	10.10	10.08	0.20
RQ-03	13.38	12.79	4.41
RQ-04	42.95	42.43	1.21
RQ-05	13.61	14.39	-5.73
RQ-06	17.17	18.05	-5.13
BD-01	12.36	12.24	0.97
BD-02	25.56	25.15	1.60
BD-03	26.22	25.96	0.99
BD-04	20.98	21.63	-3.10
BD-05	15.39	15.03	2.34
BD-07	31.39	31.21	0.57
冰碛物平均值	19.82	19.80	-0.04
RQ-07	17.43	17.38	0.29
JQ-01	210.92	203.89	3.33
JQ-02	248.23	246.66	0.63
JQ-03	298.00	288.01	3.35
JQ-04	273.26	263.55	3.55
JQ-05	93.38	90.94	2.61
BD-06	62.65	62.57	0.13
BD-08	224.23	220.13	1.83
冰水沉积物平均值	178.51	174.14	1.97
平均值	83.30	81.54	0.76

样品编号	SiO₂	Al₂O₃	Fe₂O₃	CaO	K2O	MgO	Na₂O	TiO₂	P₂O₅	MnO	CIA
RQ-01	64.72	15.01	2.50	1.27	5.69	0.75	1.85	0.35	0.16	0.07	56.59
RQ-02	66.30	13.99	3.53	1.19	5.28	0.81	1.67	0.41	0.25	0.05	56.83
RQ-03	66.52	14.46	1.89	1.20	5.76	0.71	1.76	0.37	0.25	0.02	56.10
RQ-04	63.24	14.42	3.50	0.66	4.26	0.63	1.05	0.47	0.49	0.07	65.67
RQ-05	65.42	14.92	3.70	0.50	3.96	0.76	0.75	0.51	0.17	0.04	69.88
RQ-06	69.33	12.64	3.34	1.01	3.45	0.90	1.24	0.45	0.18	0.06	62.41
BD-01	66.43	16.09	3.52	0.46	3.41	0.82	2.21	0.48	0.10	0.08	66.34
BD-02	67.20	14.11	2.90	0.51	2.27	0.82	3.16	0.41	0.10	0.05	62.17
BD-03	68.15	14.38	3.06	0.59	2.38	0.97	3.21	0.41	0.06	0.06	61.68
BD-04	71.21	12.83	1.82	0.45	1.97	0.58	3.64	0.29	0.06	0.04	58.93
BD-05	61.97	14.74	5.49	2.24	2.43	1.03	1.55	0.54	0.11	0.10	65.59
BD-07	61.18	16.79	5.20	1.03	4.02	1.20	1.36	0.56	0.17	0.10	66.49
冰碛物平均值	65.97	14.53	3.37	0.93	3.74	0.83	1.95	0.44	0.18	0.06	62.39
RQ-07	65.11	11.60	2.73	4.33	3.73	1.68	1.35	0.30	0.12	0.04	57.76
JQ-01	70.65	13.29	1.54	1.58	5.08	0.25	1.98	0.23	0.13	0.02	53.33
JQ-02	65.90	14.50	2.76	1.83	4.66	0.72	2.02	0.47	0.28	0.06	55.35
JQ-03	68.10	14.02	1.99	1.65	5.96	0.42	1.78	0.33	0.21	0.03	53.24
JQ-04	70.17	13.92	1.03	1.29	5.31	0.22	1.95	0.19	0.11	0.02	55.19
JQ-05	70.69	13.39	1.73	1.33	5.51	0.25	1.79	0.22	0.13	0.02	54.17
BD-06	71.44	12.54	1.97	1.06	4.34	0.67	2.35	0.26	0.08	0.06	54.44
BD-08	63.79	14.75	5.56	1.88	2.48	1.75	2.03	0.57	0.11	0.10	61.16
冰水沉积物平均值	68.23	13.50	2.41	1.87	4.63	0.75	1.91	0.32	0.15	0.04	55.58
平均值	66.88	14.12	2.99	1.30	4.10	0.80	1.94	0.39	0.16	0.05	59.67