Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/gj.1265 |
Near-isochemical evolution of clay mineral assemblages in differentially buried volcaniclastic sediments, the Late Miocene Upper Red Formation, Iran | |
Amini, A.1; Curtis, C. D.2; Anketell, J. M.2 | |
通讯作者 | Amini, A. |
来源期刊 | GEOLOGICAL JOURNAL
![]() |
ISSN | 0072-1050 |
出版年 | 2011 |
卷号 | 46期号:4页码:311-322 |
英文摘要 | The Upper Red Formation (URF) comprises over 1-5 km of late Miocene siliciclastic sediments in the Central Iran Basin. The formation is dominated by volcaniclastic conglomerates and arenites. The prevailing arid conditions during most of the basin’s history resulted in deposition of predominantly organic-poor, red sediments with gypsum and zeolites. This investigation concentrates on the mineralogy and geochemistry of the URF in the southern and northern margins of the basin where the formation was buried to depths of 2.4 and 6.6 km, respectively. Fine fraction mineral separates from the southern margin consist of nearly pure smectite and zeolites at a depth of 400m and smectite with minor quartz and calcite at 1800 m. Shallow samples (1350 m) from the northern section are rich in smectite, illite/smectite with some discrete illite and chlorite. This assemblage is progressively replaced by discrete illite and chlorite with increasing burial depth so that only these two minerals are found at depths greater than 4300 m. The initial alteration process involved replacement of glass and volcanic lithics by smectite and zeolites in both margins of the basin. Increased depth of burial in the northern margin resulted in the progressive isochemical alteration of smectite to discrete illite and chlorite. Diagenesis of clay assemblages occurred essentially in a closed system. Solute products of glass hydrolysis reactions were retained in highly alkaline, saline ground waters from which zeolites, carbonates and oxides precipitated as cements. It is unlikely that these sediments were ever significantly leached by meteoric waters or by organic acids generated during burial diagenesis. Copyright (C) 2010 John Wiley & Sons, Ltd. |
英文关键词 | volcaniclastics diagenesis clay minerals zeolites Upper Red Formation Miocene Central Iran aridity |
类型 | Article |
语种 | 英语 |
国家 | Iran ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000292548700003 |
WOS关键词 | MEDITERRANEAN ALPINE CHAINS ; FOLD-THRUST BELT ; GEOCHEMICAL SIGNATURES ; METAMORPHIC ROCKS ; BASIN ; ZEOLITES ; ORIGIN ; DIAGENESIS ; SMECTITE ; AREA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/168232 |
作者单位 | 1.Univ Tehran, Univ Coll Sci, Sch Geol, Tehran, Iran; 2.Univ Manchester, Dept Earth Sci, Manchester M13 9PL, Lancs, England |
推荐引用方式 GB/T 7714 | Amini, A.,Curtis, C. D.,Anketell, J. M.. Near-isochemical evolution of clay mineral assemblages in differentially buried volcaniclastic sediments, the Late Miocene Upper Red Formation, Iran[J],2011,46(4):311-322. |
APA | Amini, A.,Curtis, C. D.,&Anketell, J. M..(2011).Near-isochemical evolution of clay mineral assemblages in differentially buried volcaniclastic sediments, the Late Miocene Upper Red Formation, Iran.GEOLOGICAL JOURNAL,46(4),311-322. |
MLA | Amini, A.,et al."Near-isochemical evolution of clay mineral assemblages in differentially buried volcaniclastic sediments, the Late Miocene Upper Red Formation, Iran".GEOLOGICAL JOURNAL 46.4(2011):311-322. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。