辽南城山头滨海红色风化壳地球化学元素特征  

Geochemical Characteristics of Red Weathering Crust in the Coastal Area of the Southern City of Liaoning Province

作　　者：吕安成 魏东岚[1] 秦浦 LüAncheng;Wei Donglan;Qin Pu(School of Geographic Science,Liaoning Normal University,Dalian,Liaoning 116029,China)

机构地区：[1]辽宁师范大学地理科学学院,辽宁大连116029

出　　处：《绿色科技》2022年第2期210-212,218,共4页Journal of Green Science and Technology

基　　金：辽宁省自然科学基金项目(编号:2019-ZD-0475)。

摘　　要：在辽南的城山头地区发现了一套滨海红色风化壳,对其化学元素特征的研究得到了辽南滨海地区红色风化壳的发育特征,可为辽南地区高海面的研究提供基础资料。以城山头红色风化壳剖面为研究对象,分析了其地球化学元素特征。结果表明:①城山头红色风化壳化学元素分布符合典型红色风化壳的基本规律,其化学组成以SiO_(2)、Al_(2)O_(3)和Fe_(2)O_(3)为主,剖面Si、Al、Fe含量变化趋势与同处辽南地区的石槽剖面存在一定差异;②城山头滨海红色风化壳样品中Na_(2)O含量超过1%,这与滨海环境和海浪作用有着巨大关系;③化学蚀变指数变化趋势指示剖面顶部到底部红色风化壳的风化程度从弱变强,发育的成熟度在逐渐增高。A set of coastal red weathering crust was discovered in Chengshantou area in southern Liaoning province.The study of its chemical element characteristics can obtain the development characteristics of the coastal red weathering crust in southern Liaoning Province, and provide basic data for the study of high sea surface in southern Liaoning region. In this paper, the geochemical characteristics of Chengshantou red weathering crust are analyzed. The results show that:① the distribution of chemical elements in the red weathering crust of Chengshantou conforms to the basic law of typical red weathering crust, and its chemical composition is mainly SiO_(2), Al_(2)O_(3) and Fe_(2)O_(3).The variation trend of Si, Al and Fe content in the profile is different from that in the Shicao profile in the same area of southern Liaoning. ② The NasO content in the sample of Chengshantou coastal red weathering crust is more than 1%, which is greatly related to the coastal environment and wave action. ③ The change trend of chemical alteration index indicates that the weathering degree of red weathering crust at the top and bottom of the profile increases from weak to strong, and the maturity of development increases gradually.

关 键 词：红色风化壳 地球化学元素 滨海环境 

分 类 号：P512[天文地球—地质学]