黄河三角洲表层土壤早期成岩作用初探

黄河三角洲表层土壤中的大量盐类物质可以造成土壤的板结化、盐渍化、砂礓化。根据该地区表层土壤中碳酸盐、硫酸盐和卤化物等矿物的沉淀过程 ,作者提出可以从早期成岩作用的角度对这些盐类物质的迁移途径、迁移方式、聚集规律、结晶习性、胶结、交代作用以及后期的淋滤、溶解过程等方面进行系统研究。在黄河三角洲表层土这一特殊沉积成岩环境中 ,根据其早期成岩作用发生和发展的规律 ,可以进一步研究成岩作用的方式、程度、类型及其与土壤性质之间的对应关系 ,探讨利用成岩作用来预测黄河三角洲地区土壤性质变化的途径

EARLY DIAGENESIS IN SURFACE SOIL OF YELLOW RIVER DELTA

There is plenty of salt in surface soil of Yellow River delta, which makes soil hardened and salinized. According to the depositing course of carbonate, sulphate and halide in the surface of soil, we can systematicly study on the migration path, migrational pattern, crystallisation and accumulation, cementation, metasomasis, later leaching and solution of salts by early diagenesis. Based on that producing and developing regulation of various kinds of early diagenesis in the special sedimentary\|diagenetic environment can be determined, and the way, degree and type of early diagenesis and their relation with soil characters can also be investigated. The path for forecasting soil characters by early diagenesis in surface soil of Yellow River delta should be explored.