Mineralogical and elemental geochemistry constraints on provenance evolution of sediments in the lower reaches of the Shichuan River, Shaanxi Province, China

被引:0
作者
Feng, Caixia [1 ]
Liu, Shen [1 ]
Hou, Chenhui [1 ]
Song, Wenlei [1 ]
Coulson, Ian M. [2 ]
机构
[1] Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
[2] Univ Regina, Dept Geol, Solid Earth Studies Lab, Regina, SK S4S 0A2, Canada
来源
ACTA GEOCHIMICA | 2025年
关键词
Mineralogy; Element geochemistry; Provenance of sediment; The Shichuanhe River; STREAM SEDIMENTS; TRACE-ELEMENTS; YELLOW-RIVER; SYSTEM; BASIN; PLATEAU;
D O I
10.1007/s11631-024-00751-w
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The Shichuanhe River, a major tributary of the lower Weihe River, is situated in Xi'an, Shaanxi Province, China. It holds significant information regarding the evolution of the Northern Weihe River, making its study crucial for understanding environmental changes in the region. Despite its importance, research on the Shichuanhe River basin has thus far been primarily focused on riverbank construction, with limited exploration of its sediment characteristics. Although river sediments hold potential for guiding agricultural practices in the area, comprehensive studies on their composition and provenance remain scarce. To address this gap, a systematic sediment sampling campaign was conducted in the lower reaches of the Shichuanhe River, and detailed mineralogical analyses were performed. The results show that the sediment is predominantly composed of detrital quartz and feldspar (albite and orthoclase), with heavy minerals constituting approximately 10%-12% of the total sediment volume. The analysis of the heavy mineral assemblage reveals an absence of significant contributions from igneous rocks in the sedimentary profile. Furthermore, the distribution patterns of major, trace, and rare-earth elements in the Shichuanhe River's argillaceous sediments exhibit similarities to those found in the Weihe River's sediments. Elemental fractionation patterns suggest that the Shichuanhe River sediments are primarily derived from Loess Plateau sediments, aligning with findings from both the Weihe River and the middle reaches of the Yellow River.
引用
收藏
页码:441 / 460
页数:20
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