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在秦岭的一些山间盆地、河谷阶地等弱剥蚀的地段发育着黄土—古土壤系列。凤州杨家山剖面(34°00′N,106°39′E)可以作为秦岭的代表黄土剖面。该剖面黄土厚约82m,由33层黄土和33层古土壤构成。黄土层中夹有两层粉砂质黄土(L_9和L_(15)),古土壤层中S_5是由3层古土壤组成的。黄土下伏晚第三纪红粘土。该剖面磁性地层测量结果表明,剖面包括了布容正极性带和松山负极性带,二者的界线(B/M)位于第8层黄土(L_8)中部。松山反极性时黄土中记录了贾拉米洛正极性亚时
Loess-paleosol series developed in some weakly denuded areas such as mountainous basins and valley terraces in the Qinling Mountains. The Yangshan section of Fengzhou (34 ° 00’N, 106 ° 39’E) can be used as the representative loess section of Qinling. The profile loess is about 82 m thick and consists of 33 layers of loess and 33 layers of paleosol. There are two layers of silty loess (L_9 and L_ (15)) in the loess layer, and three layers of palaeosol in the ancient soil layer. Loess underdeveloped later Triassic red clay. The results of magnetic stratum cross section show that the profile includes the positive and negative Songgandan bands, and the boundary line (B / M) is located in the middle of the eighth layer of loess (L_8). Matsuyama reverse polarity when recorded in the loess Jalamiluo positive polarity Asia