Field investigation and previous studies about the Cenozoic gravel beds in the piedmont of Lüliang Mountains have indicated that these gravel beds are characterized by the following: (1) The gravel beds, which always go with Lüliang Mountains but scarcely go beyond the Huanghe (Yellow) River valley, extend further in parallel than in vertical direction of the mountains. (2) The gravel beds show a asymmetric wedge shape (thicker in the east) in E-W direction, and have smaller granularity, better gradation and psephicity in the west. (3) The composition of gravels is relatively unitary but varying in the different locations. It is originated mainly from the bedrock in the adjacent Lüliang Mountains. Based on the study of spatial distribution of the gravel beds, adjacent bedrock's composition and typical profile sedimentology, this paper suggest that the gravel beds could be treated as deposits of alluvial fan facies resulted from Lüliang Mountains's Uplift in Cenozoic Era rather than the terrace accumulation of the Huanghe River in S-N direction.
LI Jian-xing, YUE Le-ping, XU Yong, SUN Lu, SUN Bo, WANG Xiao-yong, BAI Bin
. Uplift of Lüliang Mountains and Evolution of Huanghe River ―Evidence from Gravel Beds in Piedmont[J]. SCIENTIA GEOGRAPHICA SINICA, 2009
, 29(4)
: 582
-586
.
DOI: 10.13249/j.cnki.sgs.2009.04.582
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