干旱区生态环境知识资源中心(Arid): GEOCHEMICAL MARKERS OF PALEOENVIRONMENTS, WEATHERING, AND PROVENANCE IN PERMIAN-TRIASSIC TERRESTRIAL SEDIMENTS

Arid

DOI	10.2110/jsr.2020.44
	GEOCHEMICAL MARKERS OF PALEOENVIRONMENTS, WEATHERING, AND PROVENANCE IN PERMIAN-TRIASSIC TERRESTRIAL SEDIMENTS
	Galan-Abellan, Ana-Belen; Barrenechea, Jose F.; De la Horra, Raul; Alonso-Azcarate, Jacinto; Luque, Javier F.; Borruel-Abadia, Violeta; Lopez-Gomez, Jose
通讯作者	Galan-Abellan, AB
来源期刊	JOURNAL OF SEDIMENTARY RESEARCH
ISSN	1527-1404
EISSN	1938-3681
出版年	2020
卷号	90 期号:8 页码:906-920
英文摘要	This study compares several geochemical factors (major and minor rare earth elements, Ti/Al ratios, and chemical index of alteration, CIA, values) in the Early Triassic Canizar Formation (Fm) (Buntsandtein facies) of E Iberia with those of adjacent Middle Permian and Middle Triassic units (Alcotas and Eslida fms, respectively). According to significant differences detected, it seems that most geochemical perturbation occurred during the Early Triassic. Variations in TWAl ratios suggest changes in source areas between the studied units and even within the Canizar Fm. These provenance changes correlate with successive tectonic pulses during the opening and development of the Iberian Basin, as they can be linked to major sedimentary surfaces and unconformities, as well as major sedimentological variations. Ti enrichment in the lower and middle part of the Canizar Fm, together with high Sr and P concentrations, may be indicative of environmental alterations related to acid meteoric waters. Moreover, this acid alteration took place under arid conditions as reflected by CIA values, indicating that during the deposition of the Canizar Fm, variable but predominantly physical weathering prevailed in contrast to the chemical weathering that took place when the Alcotas and Eslida formations were deposited. Our data along with the known fossil record of the study area indicate that during the Middle-Late Permian and Early Triassic, conditions in this tectonically active area changed from humid to arid-acid, hampering biotic recovery. Then, during late Early-Middle Triassic times, the return of more humid and less acid environments promoted biotic development. Geochemical markers emerged as useful tools complementary to sedimentological, paleontological, and tectonic data for unveiling paleoenvironmental events, especially in a setting of significant regional change.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000580554300007
WOS关键词	SE IBERIAN RANGES ; PHOSPHATE-SULFATE MINERALS ; RARE-EARTH-ELEMENTS ; PALEOGEOGRAPHIC SIGNIFICANCE ; CONTINENTAL SEDIMENTS ; WESTERN-AUSTRALIA ; ESLIDA FORMATION ; TRACE-ELEMENTS ; EASTERN SPAIN ; BOUNDARY
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/2XILL650/326980
作者单位	[Galan-Abellan, Ana-Belen; De la Horra, Raul] Univ Complutense, Fac Geol, Dept Geodynam Stratig & Palaeontol, C Jose Antonio Novais 2, Madrid 28040, Spain; [Galan-Abellan, Ana-Belen] Univ Autonoma Madrid, Dept Geol & Geochem, Fac Sci, C Francisco Tomas & Valiente 7, Madrid 28049, Spain; [Barrenechea, Jose F.; Luque, Javier F.; Borruel-Abadia, Violeta; Lopez-Gomez, Jose] Univ Complutense, Inst Geociencias, CSIC UCM, C Severo Ochoa 7, Madrid 28040, Spain; [Barrenechea, Jose F.; Luque, Javier F.] Univ Complutense, Fac Geol, Dept Mineral & Petrol, C Jose Antonio Novais 2, Madrid 28040, Spain; [Alonso-Azcarate, Jacinto] Univ Castilla La Mancha, Fac Environm Sci, Avdenida Carlos III S-N, Toledo 45071, Spain
推荐引用方式 GB/T 7714	Galan-Abellan, Ana-Belen,Barrenechea, Jose F.,De la Horra, Raul,et al. GEOCHEMICAL MARKERS OF PALEOENVIRONMENTS, WEATHERING, AND PROVENANCE IN PERMIAN-TRIASSIC TERRESTRIAL SEDIMENTS[J],2020,90(8):906-920.
APA	Galan-Abellan, Ana-Belen.,Barrenechea, Jose F..,De la Horra, Raul.,Alonso-Azcarate, Jacinto.,Luque, Javier F..,...&Lopez-Gomez, Jose.(2020).GEOCHEMICAL MARKERS OF PALEOENVIRONMENTS, WEATHERING, AND PROVENANCE IN PERMIAN-TRIASSIC TERRESTRIAL SEDIMENTS.JOURNAL OF SEDIMENTARY RESEARCH,90(8),906-920.
MLA	Galan-Abellan, Ana-Belen,et al."GEOCHEMICAL MARKERS OF PALEOENVIRONMENTS, WEATHERING, AND PROVENANCE IN PERMIAN-TRIASSIC TERRESTRIAL SEDIMENTS".JOURNAL OF SEDIMENTARY RESEARCH 90.8(2020):906-920.