风化壳

本文介绍了相过度法、年界法、相关沉积法和风化壳法等测定夷平面年龄的方法。

Phase-transition analysis , age-boundary line analysis , correlation and crust of weathering analysis are all used in determining the age of the planation surface .

天然气成藏具有沿不整合面短距离运移基岩风化壳成藏、沿裂缝运移源岩区内火山岩成藏和沿砂体侧向运移地层超覆成藏3种模式。

There are three gas accumulation modes : gas migrating into bedrock crust of weathering through unconformity interface , gas migrating into volcanic rock in source rock through fractures and gas migrating into stratigraphic overlap through sandstone .

广西黎塘红土风化壳X射线衍射和红外吸收光谱分析研究

Study on X-ray diffraction and infrared absorption spectra of Litang laterite weathering crust , Guangxi

碳酸盐岩红色风化壳Ce异常特征及形成机理

The charateristics of CE anomalies in weathering crusts of carbonate rocks and its formation mechanism

在碳酸盐岩红色风化壳上部Ce显示正异常，底部富集层显示强烈负异常。

Ce shows positive anomalies in the upper and intense negative anomalies at the bottom .

酸性淋滤作用是风化壳剖面上REE富集分异的主要控制因素。

Acidic leaching is regarded as a major factor affecting REE enrichment and differentiation in the weathering profile .

尽管不同REE之间存在着迁移能力的差异，但分馏作用不足以改变风化壳REE分布型式对原岩的继承性。

Slight fractionation among individual REE cannot change their distribution patterns in the sections , which are inherited from parent rocks .

风化壳中腐植酸与REE形成配合物的模拟研究

A Model Study on the Formation of Compound of Humic Acid and REE under Weathering Conditions in the Weathering Crust REE Deposits

REE在风化壳中富集分异受风化壳发育程度、花岗岩原岩中REE含量及其分布和分配的影响。

The extent of REE enrichment and differentiation is affected by REE concentrations and distributions in the primary granitoid rocks , weathering degree , etc.

同时，在风化壳中发现Cu富集特征，Cu含量达到0.5%，由于Cu赋存在高岭石粘土层中，容易提取，可能是Cu矿重要的找矿层位。

Content of Cu is up to 0.5 % . Cu is easily extracted by chemical method due to Cu preserved in the kaolinite clay . Therefore , the horizon of basalt weathering crust may be an important prospecting horizon .

用X射线荧光光谱法（XRF）和X射线衍射法（XRD）分别测试了秦皇岛北戴河燕山大学北侧红色风化壳（简称燕大风化壳）主量元素和粘粒粘土矿物。

We have measured the major elements and identified clay minerals of the red weathering crusts to the northern part of Yanshan University , Beidaihe coast , Qinhuangdao , North China , by means of X-ray fluorescence and X-ray diffraction analysis .

在该井钻井作业过程中，钻遇风化壳地层61m，溶洞至少3.65m。

During the drilling operation , the 61 m weathered surface formation and at least the 3 . 65 m karst cave were drilled through .

白云石胶结物较全岩白云石具有较低的δ18O和δ13C值，说明白云石胶结物形成于裸露期的风化壳岩溶作用阶段。

The δ ~ ( 18 ) O and δ ~ ( 13 ) C values of dolomite cements are generally lower than those of dolomite of whole rocks , suggesting that the dolomite cement is formed during karstification at epidiagenetic expose phase .

三类样品的δ18O值均具有明显偏负特征，表明在碳酸盐岩成岩过程中受到大气成因的淡水影响，反映了当时的风化壳岩溶成岩环境。

The negative of δ ~ ( 18 ) O values of three kinds of samples show that the process of carbonate diagenesis is affected by meteoric fresh water , which indicates the weathering crust karst diagenesis environment at that time .

介绍了测井约束波阻抗反演技术的方法原理，以及在CFD18-1、18-2构造下第三系底砾岩及太古界花岗岩风化壳储层研究中的应用，分辨率可达到10m。

The method and theory of seismic wave impedence inversion restrained by well log were introduced in this paper , together with its application to the paleogene conglomerates and Archaeozoic weathered granite rocks in the CFD 18 1 and 18 2 structures . The resolution reached 10 meters .

花岗岩山地丘陵，是我国南方水土流失严重地区，年侵蚀模数可达8000～15000t/km~2。花岗岩风化壳极为发育，厚度可达60m以上，为严重的土壤侵蚀提供了丰富的固体物质。

The granite hilly area in South China is a region of severe soil erosion with annual erosion rate of 8000-15000 t / km2 . Thickness of the very developed weathered shell reaches more than 60m , which provides a plenty of erosible solid materials .

结果ZB区奥陶系风化壳侵蚀沟谷及顶面起伏形态的识别解释结果与地质综合研究成果基本吻合；开发井的预测结果与实际钻井结果符合程度高，并取得了良好的应用效果。

Results The identified results of eroded channel-vale and reservoir top fluctuant configuration were consistent with the integrated geological research results in ZB block , and the forecasting results of exploitation wells were accorded with the actual drilling results very well and acquired better effect .

在C2-K1的连续埋藏作用中，生成油气并向中隆带运移聚集，在古潜台风化壳圈闭内近水平的往复运动中石油继续向天然气演化，形成大型干气田。

In the C2-K1 successive subsiding , oil and gas generate in the deep-water basin and migrate and accumulate in the central lift zone . During the to and fro migration of oil and gas in the paleo buried platform weathering crust , the large-scale dry-gas field .

于基底花岗岩风化壳见工业气层；

Commercial gas layer is found in basal granite weathering crust ;

花岗岩风化壳土地退化及其危害

Land Degradation in Granite Weathering Crust Region and Its Negative Effects

下奥陶统马家沟组为低渗透率碳酸盐岩风化壳气藏；

Low-permeability carbonate gas reservoirs of Majiagou Formation , Lower Ordovician ;

碳酸盐岩风化壳及喀斯特成土作用研究

Weathering Crust of Carbonate Rocks and Process of Karst Soil Formation

风化壳稀土矿有机成矿机理研究

Study on the Organic Metallogenic Mechanism of Weathering Crust REE Deposits

华南沿海风化壳滑塌灾害

Devolution and landslip disaster of weathering crusts in South China Coast

风化壳型路基边坡的防水研究

A study on the water prevention for weathered crust subgrade slopes

沙尾风化壳高岭土矿床的研究

A study of a weathering crust kaolin deposit in Guangdong Province

风化壳稀土成矿作用&一种不平衡过程

Rare earth mineralization in weathering crust & a nonequilibrium process

广西贵港红土风化壳的地球化学特征

Geochemical characteristics of lateritic weathering crust in guigang , guangxi

花岗岩风化壳与土壤侵蚀关系的研究

Study on relationship between soil erosion and weathered granite shell

海南岛北部红色风化壳的稳定性分析

Analysis of the stability of red weathering crust on Northern Hainan Island