地质力学学报2018，Vol.24Issue(2)：274-282,9.DOI:10.12090/j.issn.1006-6616.2018.24.02.029
中原邙山黄土地层划分的讨论
DISCUSSION ON MANGSHAN LOESS STRATIGRAPHIC DIVISON IN CHINA CENTRAL PLAINS
摘要
Abstract
Stratigraphic age and stratigraphic division are basic and pilot work.As the research moves along,stratigraphic division will be re-recognized.The age and division of the loess stratigraphy mainly depend on OSL, 14C,paleomagnetism and magnetic susceptibility.Mangshan is famous for the extremely thick Manlan loess, while there exists different understandings about the stratigraphic division.Early research about Zhaoxiayu section revealed that the thickness of L1is 98m, with the weakly developed palaeosol L1SS1,and the oldest stratum exposed at the bottom of the section is the palaeosol S10.Later, the early L1 layer was divided into L1,S1 and L2 layers,and the oldest layer at the bottom of the section is the palaeosol S11 layer.Based on detailed paleomagnetic study of B/M boundary, combined with previous dating results, it is believed that the early division of L1 and the confirmation of the oldest stratum are correct, but the position of B/M boundary is mislocated.The late-stage studies are right in the position of B/M boundary but wrong in the confirmation of the oldest stratum, and also it's not appropriate to divide the palaeosol layer L1SS1of the Malan Loess into S1.The stratigraphic correlation shows that the Mangshan loess include S0-S10loess-palaeosol sequence,and the B/M boundary is located at the bottom of the loess L8.关键词
马兰黄土/B/M界线/地层划分/邙山Key words
Malan loess/B/M boundary/stratigraphic division/Mangshan分类
天文与地球科学引用本文复制引用
杨州,王书兵,蒋复初,王喜生,傅建利..中原邙山黄土地层划分的讨论[J].地质力学学报,2018,24(2):274-282,9.基金项目
国家自然科学基金项目(40302025,40972223,41272393,41472327) （40302025,40972223,41272393,41472327）
中国地质科学院重点开放实验室专项资金资助项目(KL05-13) （KL05-13）
中国地质大调查工作项目(1212010711705) （1212010711705）
