化学风化

黄河流域化学风化作用与大气CO2的消耗

Chemical weathering processes and atmospheric co_2 consumption in the Yellow River Drainage Basin

西湖水中Ca和Mg元素主要来源于陆地原生矿物的化学风化，尤其是碳酸盐风化；Na和K元素则主要来源于海洋物质的叠加效应。

Ca and Mg come from the chemical weathering of minerals , especially of silicate while Na and K are controlled mainly by oceanic material .

对太湖现代沉积物进行了X射线衍射分析、粒度分析和常量元素分析，由此推断它们的矿物成分、化学风化程度差异，并分析了不同的水动力条件和物源。

On the basis of X-ray diffraction , sedimental size and major elements analyses , we deduce the chemical weathering degree of sediments in Taihu Lake and illuminate the hydrodynamic condition and the source of sediments .

得出以下结论和初步认识：1、共和盆地腹地风成沉积CIA值小于65，处于初等化学风化程度。

The major conclusions are reached as follows : 1 . For aeolian deposits in the hinterland of the Gonghe Basin , the chemical weathering is primary .

这一发现表明，化学风化（包括碳酸盐岩溶解和硅酸盐风化）作用在大气CO2沉降和全球碳循环里的所谓丢失的汇中的重要性需要重新评价。

It is thus held that the importance of chemical weathering ( including the carbonate rock dissolution and silicate weathering ) in atmospheric CO 2 precipitation and the mysterious missing precipitation in carbon cycling requires reappraisal .

河流流域内岩石的化学风化是全球岩石化学风化的主体，准确估算流域内岩石化学风化大气CO2的消耗量，对全球碳循环研究具有重要意义。

Because of the dominant role of river basins in the global chemical weathering , accurate quantification for the consumption flux of CO2 by chemical weathering in river basins is essential for studying the global carbon cycle .

对化学风化指数（CIA）、K/Na比值、残积系数（Ki）等化学综合参数的研究结果显示，各项地球化学参数可有效指示成壤环境与成壤强度；

The chemical weathering index ( CIA ), K / Na ratio , eluvial coefficient ( Ki ) and A-CN-K diagram , can availably indicate the evolution of pedogenic environment .

封闭湖盆接纳的各种气候条件下形成的连续沉积物具有明显不同的Rb、Sr含量，沉积物Rb/Sr比值的变化序列可以反映流域经历的化学风化历程。

The sediments deposited continuously in a closed lake under different paleoclimatic conditions display variations in Rb and Sr distribution , reflecting intensities of chemical weathering in a single watershed by variations in the Rb / Sr ratios .

目前关于陆地硅酸盐岩风化与海洋Sr同位素关系的研究，主要存在两种观点：一种认为海水Sr同位素变化可作为全球地表化学风化的替代性标志；

Until now , there are two views about the relationship between chemical weathering of silicate rocks and marine Sr isotope . One is that the change of marine Sr isotope could be used as the proxy of the average continental chemical weathering ;

CIA值并不能灵敏地反映黑色页岩的化学风化程度，A-CN-K三角图解并不能完整地反映黑色页岩化学风化的整个过程。

CIA can not reflect the degree of chemical weathering of black shales precisely , and A-CN-K diagram can not reflect chemical weathering processes of black shales completely .

黄河中游黄土的REE组成及流域物理风化决定了黄河沉积物的REE特征；而长江流域复杂的源岩与较强的化学风化控制了长江沉积物的REE组成特点。

REE composition in loess in the middle Yellow river and extensive physical weathering in drainage basins have great influence on REE characteristics in the Yellow river sediments , whereas complex source rock and chemical weathering controlled the REE composition and distribution in the Yangtze river sediments .

北部页岩明显偏高的TiO2和Al2O3含量以及化学风化指数（CIW）表明北部沉积物的源区经历了更强烈的风化作用。

REE and trace element data supported the conclusion further . The chemical index of weathering ( CIW ) as well as TiO 2 and Al 2 O 3 concentrations reflected a more intense weathering in the provenances of the shales in north part .

东南极拉斯曼丘陵斯托尼斯半岛化学风化作用的初步研究

The chemical weathering at Stornes peninsula , Larsemann hills , east Antarctica

宏观结构面是化学风化最主要的发生场所；

Macro-fractures are the main places of chemical weathering occurring .

总体上表现以半干旱的环境为主导化学风化作用相对微弱。

Indicating that the semi-arid environment was dominant with much weaker chemical weathering .

说明网纹是在较强的化学风化条件下形成的。

The mottles develop under strong chemical weathering conditions .

不同构造带硅酸盐化学风化率的制约：气候还是构造？

Constraints on Silicate Weathering Rates in Different Settings : Climatic or Tectonic ?

广西凭祥英安岩的化学风化作用研究

Chemical weathering for dacite in Pingxiang , Guangxi

全新世岱海流域化学风化及其对气候事件的响应

Watershed chemical weathering and its response to climate events in Daihai area during Holocene

琼北第四纪玄武岩化学风化速率的初步研究

A preliminary study of rates of chemical weathering of Quaternary basalts in Hainan Island

红河盆地的化学风化作用：主要和微量元素地球化学记录

Chemical Weathering in the Red River Basin : Records of Major and Trace Elemental Geochemistry

新生代构造抬升对地表化学风化和全球气候变化的影响

The effects of Cenozoic tectonic uplift on earth surface chemical weathering and global climate change

哈尔滨沙尘沉降物的化学风化特征及物源区意义

Geochemical Records of Chemical Weathering Characteristics and Matter Source of Sand-Dust Weather Deposits in Harbin

它对地表化学风化的影响主要表现为引起造山带地区化学风化能力的提高；

The Cenozoic uplift might cause to increase the chemical weathering ability in orogenic belts .

最近13万年来黄土高原黄土剖面中绿泥石的化学风化与古气候变迁

Chemical weathering of chlorite in Chinese loess-paleosol sequences in the last 130 Ka and climate change

由于非连续特性，化学风化可增大水岩界面，提升矿物溶解反应的规模及速率。

Because of discontinuity , chemical weathering can add water-rock interface and raise mineral dissolution rate .

云冈石窟砂岩中碳酸盐胶结物化学风化及相关文物病害研究

Chemical weathering of carbonate cement in sandstone and the related cultural relic diseases in Yungang Grottoes

两个化学风化反应方程式的讨论

Two reaction equations of chemical weathering

化学风化作用具有由南向北增强趋势；

In addition , there is the trend of increasingly strong weathering from south to north .

植物根系强化黄土土层化学风化速率的作用

Intensifying Impacts of Roots of Woody and Grass Species on Chemical Weathering of Soil on Loess Plateau