Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2110/jsr.2013.33 |
SOURCES OF Sr AND S IN ALUMINUM-PHOSPHATE-SULFATE MINERALS IN EARLY-MIDDLE TRIASSIC SANDSTONES (IBERIAN RANGES, SPAIN) AND PALEOENVIRONMENTAL IMPLICATIONS FOR THE WEST TETHYS | |
Galan-Abellan, Belen1,2; Alonso-Azcarate, Jacinto3; Newton, Robert J.4; Bottrell, Simon H.4; Barrenechea, Jose F.2,5; Benito, M. Isabel1,2; De la Horra, Raul1,2; Lopez-Gomez, Jose1,2; Luque, Javier2,5 | |
通讯作者 | Galan-Abellan, Belen |
来源期刊 | JOURNAL OF SEDIMENTARY RESEARCH
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ISSN | 1527-1404 |
EISSN | 1938-3681 |
出版年 | 2013 |
卷号 | 83期号:5-6页码:406-426 |
英文摘要 | Aluminum-phosphate-sulfate (APS) minerals, formed during early diagenesis in relation to acid meteoric waters, are the main host of Sr and S in the Early-Middle Triassic continental sandstones of the Iberian Ranges (east of the Iberian Peninsula). The sources of these elements and the effects of paleoenvironmetal changes on these sources and on the formation of APS minerals during Early-Middle Triassic tunes, were established on the basis of Sr and S isotopic analyses. The S and Sr data (delta S-34 Lon := +11 to +14%0 and Sr-87/Sr-86 = 0.7099-0.7247, respectively) can be interpreted as resulting from mixing of different sources. Strontium was sourced from the dissolution of pre-existing minerals like K-feldspar and clay minerals inherited from the source areas, causing high radiogenic values. However, the isotopic signal must also be influenced by other sources, such as marine or volcanic aerosol that decreased the total Sr-87/Sr-86 ratios. Marine and volcanic aerosols were also sources of sulfur, but the delta S-34 was lowered by dissolution of pre-existing sulfides, mainly pyrite. Pyrite dissolution and volcanic aerosols would also trigger the acid conditions required for the precipitation of APS minerals. APS minerals in the study area are found mainly in the Canizar Formation (Olenekian?-Aegian), which has the lowest Sr-87/Sr-86 ratios. The lower abundance of APS minerals in the Eslida Formation (Aegian-Pelsonian) may indicate change in the acidity of pore water towards more alkaline conditions, while the increased Sr-87/Sr-86 ratios imply decreased Sr input from volcanic activity and/or marine aerosol inputs during Anisian times. Therefore, the decrease in abundance of APS minerals from the Early to Middle Triassic and the variations in the sources of Sr and S are indicative of changes in paleoenvironmental conditions during the beginning of the Triassic Period. These changes from acid to more alkaline conditions are also coincident with the first appearance of carbonate paleosols, trace fossils, and plant fossils in the upper part of the Canizar Formation (and more in the overlying Eslida Formation) and mark the beginning of biotic recovery in this area. The presence of APS minerals in other European basins of the Western Tethys (such as the German Basin, the Paris Basin and the southeastern France and Sardinia basins) could thus also indicate that unfavorable environmental conditions caused delay in biotic recovery in those areas. In general, the presence of APS minerals may be used as an indicator of arid, acidic conditions unfavorable to biotic colonization. |
类型 | Article |
语种 | 英语 |
国家 | Spain ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000321809800003 |
WOS关键词 | MASS EXTINCTION ; EASTERN SPAIN ; KAROO BASIN ; BUNTSANDSTEIN FACIES ; ISOTOPIC COMPOSITION ; BIOTIC RECOVERY ; MARINE SULFATE ; BOUNDARY ; SULFUR ; STRATIGRAPHY |
WOS类目 | Geology |
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/2XILL650/178662 |
作者单位 | 1.Univ Complutense Madrid, Fac Geol, Dept Estratig, CSIC, E-28040 Madrid, Spain; 2.Univ Complutense Madrid, Fac Geol, Inst Geociencias, CSIC, E-28040 Madrid, Spain; 3.Univ Castilla La Mancha, Fac Ciencias Medioatnbiente, Toledo 45071, Spain; 4.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; 5.Univ Complutense Madrid, Fac Geol, Dept Cristalog & Mineral, CSIC, E-28040 Madrid, Spain |
推荐引用方式 GB/T 7714 | Galan-Abellan, Belen,Alonso-Azcarate, Jacinto,Newton, Robert J.,et al. SOURCES OF Sr AND S IN ALUMINUM-PHOSPHATE-SULFATE MINERALS IN EARLY-MIDDLE TRIASSIC SANDSTONES (IBERIAN RANGES, SPAIN) AND PALEOENVIRONMENTAL IMPLICATIONS FOR THE WEST TETHYS[J],2013,83(5-6):406-426. |
APA | Galan-Abellan, Belen.,Alonso-Azcarate, Jacinto.,Newton, Robert J..,Bottrell, Simon H..,Barrenechea, Jose F..,...&Luque, Javier.(2013).SOURCES OF Sr AND S IN ALUMINUM-PHOSPHATE-SULFATE MINERALS IN EARLY-MIDDLE TRIASSIC SANDSTONES (IBERIAN RANGES, SPAIN) AND PALEOENVIRONMENTAL IMPLICATIONS FOR THE WEST TETHYS.JOURNAL OF SEDIMENTARY RESEARCH,83(5-6),406-426. |
MLA | Galan-Abellan, Belen,et al."SOURCES OF Sr AND S IN ALUMINUM-PHOSPHATE-SULFATE MINERALS IN EARLY-MIDDLE TRIASSIC SANDSTONES (IBERIAN RANGES, SPAIN) AND PALEOENVIRONMENTAL IMPLICATIONS FOR THE WEST TETHYS".JOURNAL OF SEDIMENTARY RESEARCH 83.5-6(2013):406-426. |
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