Geochemistry of lower Jurassic shales of the Shemshak Formation, Kerman Province, Central Iran: Provenance, source weathering and tectonic setting

被引：82
|
作者：
Moosavirad, S. M. [1 ]
Janardhana, M. R. [2 ]
Sethumadhav, M. S. [1 ]
Moghadam, M. R. [3 ]
Shankara, M. [1 ]
机构：
[1] Univ Mysore, Dept Studies Earth Sci, Mysore 570006, Karnataka, India
[2] Univ Mysore, Yuvarajas Coll, Dept Earth Sci, Mysore 570005, Karnataka, India
[3] Univ Appl Sci & Technol, Kerman Coal Co, Esfahan, Iran
来源：
CHEMIE DER ERDE-GEOCHEMISTRY | 2011年 / 71卷 / 03期
关键词：
Shales; Lower Jurassic; Geochemistry; Provenance; Palaeoweathering; Tectonic setting; Shemshak Formation; Kerman Province; Central Iran; SEDIMENTARY-ROCKS; CONTINENTAL-CRUST; PLATE-TECTONICS; GREENSTONE-BELT; ARCHEAN SHALES; BLACK SHALES; EVOLUTION; BASIN; PETROGRAPHY; SUPERGROUP;
D O I：
10.1016/j.chemer.2010.10.001
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：
Lower Jurassic shales of the Shemshak Formation of Kerman Province, Central Iran, were analyzed for major and selected trace elements to infer their provenance, intensity of palaeoweathering of the source rocks and tectonic setting. Plots of shales on Al2O3 wt.% versus TiO2 wt.% diagram and Cr (ppm) versus Ni (ppm) diagram indicate that acidic (granitic) rocks constitute the source rocks in the provenance. Average CIA, PIA and CIW values (84%, 92%, 93%, respectively) imply intense weathering of the source material. Plots of shales on bivariate discriminant function diagram reveal an active continental margin setting for the provenance. The inferred tectonic setting for the Lower Jurassic shales of the Shemshak Formation of Kerman Province is in agreement with the tectonic evolutionary history of the Central Iran during the Jurassic period. (C) 2010 Elsevier GmbH. All rights reserved.
引用
收藏
页码：279 / 288
页数：10
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