侵蚀期

资料表明，黄土高原约160万年以来发生了6次构造侵蚀期，各次侵蚀期下切深度存在差别，深度变化一般在5～130m之间。

Material shows that the tectonic erosion periods occurred six times since 1.6 Ma . B.P. The depth eroded by each tectonic erosion period was different , it varies generality between 5 and 130 m.

黄土高原侵蚀期研究

Study on Erosion Periods in Loess Plateau

根据野外调查和实际测量资料，研究了黄土高原构造侵蚀期和期内造成的侵蚀。

According to the material of field investigation and survey , tectonic erosion periods and their erosion are studied .

和全新世5个时期，其中前4个时期为自然侵蚀期，全新世为人为加速侵蚀期。

Of Pleistocene , and Holocene . The first four periods were natural erosion period , but fifth period was artificial acceleration erosion period .

黄土高原构造侵蚀期与海、湖盆地构造侵蚀期不同，它所造成的侵蚀主要限于沟谷、丘陵区和塬边。

The tectonic erosion period is different from those occurred in sea and lake basins , and the erosion produced by the former happened mainly in river valleys , hill areas and the edge slope of table lands .

指出在冶炼过程中炉衬遭损坏的主要原因是初渣的化学侵蚀和精炼期的高温热作用。

It shows that the main causes of lining wear in ferro - chrome smelting process are the chemical erosion by early slag and the thermal effect at high temperature .

黄土高原地质时期土壤侵蚀的相对强烈期为：更新世早期（2.5～2.4MaB.P.）

During the geological period of Loess Plateau , the relatively intensive stages of soil erosion included five stages : early period ( 2.5 ~ 2.4 Ma B.P. )