周原黄土磁化率与Fe^（3＋）／Fe^（2＋）＋Fe^（3＋）及铁相对含量间的关系

RELATION BETWEEN SUSCEPTIBILITY AND Fe￣(2+)/Fe￣(2+)+Fe￣(3+) AND RELATIVE CONTENTS OF IRON IN ZHOUYUAN LOESS

对陕西岐山县礼村的周原黄土进行了磁化率和穆斯堡尔谱的测试，样品选自礼村黄土剖面中的马兰黄土、褐红色顶层埋藏土、褐色顶层埋藏土和新近黄土各个层位，它们是在不同的气候条件下形成的。根据对样品穆斯堡尔谱的测试，可以得到黄土全样和非磁分裂组分中Ｆｅ￣（３＋）／Ｆｅ￣（２＋）＋Ｆｅ￣（３＋）、全样中全铁的相对含量以及全样、磁分裂组分和非磁分裂组分中Ｆｅ￣（３＋）的相对含量。结果表明，磁化率与上述由穆斯堡尔谱学可法所得到的各个量之间都存在着较好的线性关系，并根据形成这些黄土的气候条件定性地解释了这些线性关系的存在。

Susceptibility and Mossbauer soectrum of Zhouyuan loess from Licun Village.,Qi County,Shaanxi Province were measured in this study.The loess samples Were selected from different layers including Malan loess,brown-red and brown buried soil as well as modern loess. They were deposited under different paleoclimatic conditions.Fe￣(3+)/Fe￣(2+)+Fe￣(3+) for bulk sample and non-magnetic component,relative contents of iron and Fe￣(3+)inbulk samples,and magnetic and non-magnetic components were obtained based on.Mossbauer measurements.The study shows that linear relations between susceptibilityand chemical parameters mentioned above were determined,and these linear relations areexplained qualitatively on the basis of paleoclimatic conditions in which the loess sam-ples were deposited.