碳酸盐岩红土植硅体记录的指示意义

农日正; 李仁成; 董松声; 何伟松; 黄春玲; 赵胜利; 何玲玉

doi:10.3969/j.issn.1001-4810.2013.01.004

碳酸盐岩红土植硅体记录的指示意义

doi: 10.3969/j.issn.1001-4810.2013.01.004

桂林理工大学地球科学学院/广西隐伏金属矿产勘查重点实验室

基金项目: 国家自然科学基金(41262009);广西自然科学基金(2012jjAA50048)

计量
- 文章访问数: 2462
- HTML浏览量: 512
- PDF下载量: 1605
- 被引次数: 0
出版历程
- 收稿日期: 2012-09-17
- 发布日期: 2013-03-25

Indicative significance of phytolith records in laterite developed on carbonate rocks

College of Earth Sciences/Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration， Guilin University of Technology

摘要

摘要: 选取广西桂林市雁山碳酸盐岩红土剖面,对红土中的植硅体类型、分布及含量进行了定量分析。发现:(1)表土植硅体形态多样、含量丰富,含量从剖面表层向下迅速减少,20cm及其以下植硅体含量极少或没有;(2)除了0~0.1m内有植硅体富集外,其他深度再也没有发现新的植硅体富集层;(3)受淋滤和生物扰动作用影响,植硅体可能出现向下10~20cm的运移,但运移对其形态和大小没有明显的选择性,植硅体形态组合受运移影响不大,能够很好地反映上覆植被的组成和所处地区的气候总体特征;(4)研究区植硅体富集于红土表层,且为剖面中的唯一富集层,是红土形成过程植硅体运移的反映,支持了红土的碳酸盐岩风化成因;(5)植硅体运移选择性不明显的特点,为利用碳酸盐岩红土植硅体客观分析和重建古环境提供了基础和可能。
- 碳酸盐岩 /
- 红土 /
- 风化成因 /
- 植硅体 /
- 古环境
Abstract: Types, distribution and content of phytolith extracted from laterite developed on carbonate rock are analyzed quantitatively in Yanshan district, Guilin city, Guangxi. Some findings are shown as below，（1）Phytolith types are various in surface soil. The content of phytolith presents high values in modern soil, decreases quickly from surface laterite down to bottom and becomes very little or absent at 20 cm deep. （2）No phytolith rich layers are found except in the surface soil (0～0.1 m) on the profile. （3）Influenced by leaching and bioturbation, phytolith in laterite developed on carbonate rocks can be transported downward with approximate 10～20 cm. However, phytolith translocation has no pronounced selectivity to their types and sizes and only has little effect on its assemblage in soil. The vegetation and climate recorded in phytolith assemblages in laterite soils are well accorded with natural conditions in this area. （4）Surface laterite is the only phytolith enriched layer on the profile. This distribution character suggests phytolith transport from surface soil to bottom during the formation of laterite, which supports the view that the laterite originated by carbonate rock weathering. （5）The characteristics that transportation of phytolith having no pronounced selectivity to phytolith assemblage makes it possible to reconstruct paleoenvironments by analyzing phytolith data objectively.
- carbonate rock /
- laterite /
- weathering origin /
- phytolith /
- paleoenvironment

HTML

参考文献(25)

[1]	李景阳,朱立军,梁风.碳酸盐岩红土风化壳主要特征及红土成因探讨——以贵州典型剖面为例［J］.水文地质工程地质,2001,(5):7-11.
[2]	徐则民,黄润秋,唐正光,等.中国南方碳酸盐岩上覆红土形成机制研究进展［J］.地球与环境,2005,33(4):29-35.
[3]	孙承兴,王世杰,刘秀明,等.碳酸盐岩风化壳岩—土界面地球化学特征及其形成过程——以贵州花溪灰岩风化壳剖面为例［J］.矿物学报,2002,22(2):126-132.
[4]	冯志刚,王世杰,周德全,等.黔北新蒲红色风化壳剖面的粒度分布特征——兼论岩溶区上覆土层的物质来源［J］.地质科学,2004,39(3):440-451.
[5]	王永吉,吕厚远.植物硅酸体研究及应用［M］.北京:海洋出版社,1993.
[6]	Alexandre A, Meunier J D, Lezine A M, et al. Phytoliths: indicators of grassland dynamics during the late Holocenein intertropical Africa［J］. Palaeogeography, Palaeoclimatology, Palaeoecology, 1997, 136:213-229.
[7]	Barboni D, Bonnefille R, Alexandre A, et al. Phytoliths as palaeoenvironmental indicators, West Side Middle Awash Valley, Ethiopia［J］. Palaeogeography, Palaeoclimatology, Palaeoecology, 1999, 152:87-100.
[8]	Fredlund G G, Tieszen L T. Calibrating grass phytolith assemblages in climatic terms: application to late Pleistocene assemblages from Kansas and Nebraska ［J］. Palaeogeography, Palaeoclimatology, Palaeoecology, 1997,136:19-211.
[9]	Lu H Y, Wu N Q, Yang X D, et al. Phytoliths as quantitative indicators for the reconstruction of past environmental conditions in China I: phytolith-based transfer functions［J］. Quaternary Science Reviews, 2006, 25:945-959.
[10]	顾延生,秦养民,朱宗敏.浙江长兴中—晚更新世红土植硅体与分子化石记录及其环境意义［J］.海洋地质与第四纪地质,2007,27(1):125-130.
[11]	Alexandre A, Meunier, J D, Mariotti A, et al. Late Holocene phytoliths and carbon-isotope record from a latosol at Salitre, South-Central Brazil ［J］. Quarternary Research, 1999, 51(2): 187-194.
[12]	Li R C, Cater J A, Xie S C, et al. Phytoliths and microcharcoal at Jinluojia archeological site in middle reaches of Yangtze River indicative of paleoclimate and human activity during the last 3000 years［J］. Journal of Archaeological Science, 2010,37:124-132.
[13]	张新荣,胡克,介冬梅.泥炭沉积中植硅体对环境指示的意义——以吉林敦化泥炭剖面为例［J］.吉林大学学报(地球科学版),2005,35(6):694-698.
[14]	范斌,许世远,俞立中,等.巢湖沉积植硅体组合及中全新世以来的环境演变［J］.湖泊科学,2006,18(3):273-279.
[15]	王伟铭,虞子冶,杨浩.江西星子县第四纪红土层的植硅石和孢粉研究及意义［J］.微体古生物学报,1997,14(1):41-48.
[16]	Fisher R F, Newell Bourne C, Fisher W F. Opal phytoliths as an indicator of the foristics of prehistoric grasslands［J］. Geoderma,1995,68(4):243-255.
[17]	Rovner I. Plant opal phytolith analysis ［J］. Advances in Archaeological Method and Theory, 1983, 6:225-266.
[18]	Fishkis O, Ingwersen J, Streck T. Phytolith transport in sandy sediment: Experiments and modeling ［J］. Geoderma, 2009, 151: 168-178.
[19]	Fishkis O, Ingwersen J, Lamers M, et al. Phytolith transport in soil: A field study using fluorescent labeling ［J］. Geoderma, 2010, 157:27-36.
[20]	Mardella M, Alexandre A, Ball T (ICPN Working Group). International code for phytolith nomenclature 1.0 ［J］. Annals of botany, 2005, 96:253-260.
[21]	Diester-Haas L, Schrader H J, Thiede J. Sedimentological and paleoclimatological investigations of two pelagic ooze cores off Cape Barbas, North-West Africa［J］. Meteor Forschungs-Ergeb., 1973, Reihe C,(16):19-66.
[22]	王伟铭,刘金陵,周晓丹.南京直立人洞穴堆积的植硅体气候指数研究［J］.科学通报,2003,48(11):1205-1208.
[23]	Carter J A. Phytolith analysis and paleoenvironmental reconstruction from Lake Poukawa Core, Hawkes Bay, New Zealand［J］. Global and Planetary Change,2002,33:257-267.
[24]	Albert R M, Shahack-Gross R, Cabanes D, et al. Phytolithrich layers from the Late Bronze and Iron Ages at Tel Dor (Is-rael): mode of formation and archaeological significance［J］. Journal of Archaeological Science,2008,35:57-75.
[25]	Kelly E F, Blecker S W, Yonker C M, et al. Stable isotope composition of soil organic matter and phytoliths as paleoenvironmental indicators［J］. Geoderma,1998,82:59-81.