辽南地区红色风化壳粒度特征分析  

Particle Size Characteristics of Red Weathering Crust in Southern Liaoning Province

作　　者：白涛 魏东岚[1] 李永化[1] 田娜娜 BAI Tao(School of Geography,Liaoning Normal University,Liaoning Dalian 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：《国土与自然资源研究》2020年第5期25-29,共5页Territory & Natural Resources Study

摘　　要：以大连市金州区七顶山剖面红色风化壳为研究对象,分析其粒度特征。按固定间距(20cm)连续采集样品,总共采集20份红色风化壳样品,运用激光粒度仪进行粒度特征测定及计算分析。结果表明:七顶山剖面砂粒级粒度含量超过50%以上,粗砂粒较多及粉粘比较高,表明红色风化壳整体发育程度不高,风化条件较差。辽南地区红色风化壳经历了由湿热气候逐渐变为干冷气候再转变为湿热气候,最后逐渐缓慢形成温暖气候的过程。清晰反映出红色风化壳与母质基岩有一定的同源性、继承性。Taking the red weathering crust of Qidingshan section in Jinzhou District of Dalian City as the research object and analyzing its particle size characteristics.The samples were collected continuously at a fixed distance(20cm).A total of 20 samples of red weathering crust were collected.The particle size characteristics were measured and analyzed by laser particle size analyzer and the results showed that the grain size content of sand in Qidingshan section is more than 50%,the coarse sand is more and the powder viscosity ratio is higher,indicating that the overall development of red weathering crust is not high,and the weathering conditions are poor.The red weathering crust in southern Liaoning experienced a process from humid climate to dry climate,then to humid climate,and finally to warm climate.It clearly shows that the red weathering crust has certain homology and inheritance with the parent rock.

关 键 词：红色风化壳 粒度分析 辽南 

分 类 号：K903[历史地理—人文地理学]