CAJ | 학술논문

对甘肃西山坪遗址剖面样品进行磁化率、频率磁化率、热磁分析、非磁滞剩磁和等温剩磁等一系列岩石磁学实验测试,分析环境磁学参数特征变化,试图探讨西山坪遗址研究意义,为今后深入研究该沉积序列蕴含的古环境记录提供了岩石磁学基础.结果表明:西山坪遗址剖面沉积物中磁性矿物主要以低矫顽力的磁铁矿和磁赤铁矿为主,高矫顽力磁性矿物赤铁矿含量极其有限,越向剖面表层,强磁性矿物含量逐渐增加.磁性矿物颗粒表现出黄土的典型特征,以单畴、准单畴为主,含有一定量的超顺磁颗粒,颗粒度越向剖面表层越细.从物源上看,遗址沉积物主要来自近源的黄土风尘堆积,主要是风成堆积,并混合大量人类活动信息,给今后综合研究岩石磁学与人类活动特征的关系有一定借鉴意义.
대감숙서산평유지부면양품진행자화솔、빈솔자화솔、열자분석、비자체잉자화등온잉자등일계렬암석자학실험측시,분석배경자학삼수특정변화,시도탐토서산평유지연구의의,위금후심입연구해침적서렬온함적고배경기록제공료암석자학기출.결과표명:서산평유지부면침적물중자성광물주요이저교완력적자철광화자적철광위주,고교완력자성광물적철광함량겁기유한,월향부면표층,강자성광물함량축점증가.자성광물과립표현출황토적전형특정,이단주、준단주위주,함유일정량적초순자과립,과립도월향부면표층월세.종물원상간,유지침적물주요래자근원적황토풍진퇴적,주요시풍성퇴적,병혼합대량인류활동신식,급금후종합연구암석자학여인류활동특정적관계유일정차감의의.
We have made a series of rock magnetic laboratory tests of susceptibility,frequency dependent susceptibility,thermal magnetic analysis,the non-hysteresis remanence and isothermal remanent magnetization on the section samples of Xishanping site,we analyse the environmental magnetic parameters characteristic changes and attempt to explore the significance of the Xishanping site research to serve the study of the sedimentary sequence containing records of the ancient environment,and provide the basis of rock magnetism for future studies.The results show that the magnetic minerals in the Xishanping site sediments are mainly of low-coercivity magnetite and maghemites,high-coercivity hematite is extremely limited,and the closer to the surface,the concentration of strong magnetic minerals more increase.Magnetic mineral grains show the typical characteristics of loess,but contain a certain amount of super-paramagnetic particles(SP),the closer to the surface,the grains size thinner.From the provenance of the material source,the Xishanping site sediments stem mainly from eolian loess accumulation,aeolian accumulation,and are mixed with a lot of human activity information.Comprehensive study on the relationshipbetween rock magnetic characteristics and human activities for the future has a certain referential significance.