干旱区生态环境知识资源中心(Arid): Carbonate tufas as archives of climate and sedimentary dynamic in volcanic settings, examples from Gran Canaria (Spain)

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DOI	10.1111/sed.12908
	Carbonate tufas as archives of climate and sedimentary dynamic in volcanic settings, examples from Gran Canaria (Spain)
	Rodriguez-Berriguete, Alvaro; Camuera, Jon; Maria Alonso-Zarza, Ana
通讯作者	Rodriguez-Berriguete, A (corresponding author), Univ Fed Rio de Janeiro, Inst Geosci, Dept Geol, Lab Sedimentary Geol Lagesed, BR-21941916 Rio De Janeiro, Brazil.
来源期刊	SEDIMENTOLOGY
ISSN	0037-0746
EISSN	1365-3091
出版年	2021-07
英文摘要	Three Holocene tufas from Gran Canaria volcanic island were studied with the aim of deciphering their sedimentary evolution through space and time. Las Temisas tufa (south-eastern arid part of the island) is dominantly composed of oncoids, intraclasts, phytoclasts, coated stems, minor thin stromatolites, and a high amount of siliciclastics. It was deposited in a fluvial system with variable flow velocities and palustrine conditions areas, which alternated with high energy events. Azuaje tufa (northern humid part of the island) is composed of coated stems, stromatolites, oncoids and phytoclasts, with relatively low amounts of siliciclastics, suggesting slow-flowing and palustrine conditions and a relatively low incidence of (high energy) floodings. Los Berrazales tufa (north-west of Gran Ganaria, the most humid one), is mainly composed of coated stems and crystalline crusts, formed in a laminar flow regime. Dominant clastic sedimentation in Las Temisas and high calcite growth rates in Los Berrazales led to a poor development of stromatolites in comparison with Azuaje. Las Temisas and Azuaje deposits have similar upward evolution with decreasing trend in siliciclastics and increasing trend in carbonates. However, Las Temisas has higher siliciclastic and lower phytoclastic contents suggesting a less vegetated area and more arid climate than in the other deposits. Additionally, tufas record local events common in volcanic terrains. Azuaje presents three units bounded by erosive discontinuities, which reveal significant erosion by enhanced runoff that could be caused by loss of vegetation due to wildfires related to volcanic eruptions at headwaters. Las Temisas record a possible interruption in sedimentation represented by aligned boulders due to rockfalls from the hillsides. These deposits formed from waters with similar chemistry providing to the carbonates their similar signals in delta C-13-delta O-18 stable isotopes and Sr-87/Sr-86 ratios like that of the volcanic rocks. This work shows how, in volcanic areas, tufas are unique archives of the climate, vegetation and volcanic-related processes, because all imprint the sedimentary regime of tufa deposition.
英文关键词	Carbonate tufa climate Holocene isotopes volcanic island wildfires
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000674845700001
WOS关键词	IBERIAN RANGE ; ENVIRONMENTAL SIGNIFICANCE ; RIVER PIEDRA ; TRAVERTINE ; DEPOSITS ; PLEISTOCENE ; ISLAND ; AREA ; FABRICS ; SYSTEMS
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/2XILL650/367545
作者单位	[Rodriguez-Berriguete, Alvaro] Univ Fed Rio de Janeiro, Inst Geosci, Dept Geol, Lab Sedimentary Geol Lagesed, BR-21941916 Rio De Janeiro, Brazil; [Camuera, Jon] Univ Helsinki, Fac Sci, Dept Geosci & Geog, Yliopistonkatu 4, Helsinki 00100, Finland; [Maria Alonso-Zarza, Ana] IGME, Geol & Min Inst Spain, C Rios Rosas 23, Madrid 28003, Spain; [Maria Alonso-Zarza, Ana] Univ Complutense Madrid, Fac CC Geol, C Jose Antonio Novais 12, Madrid 28040, Spain
推荐引用方式 GB/T 7714	Rodriguez-Berriguete, Alvaro,Camuera, Jon,Maria Alonso-Zarza, Ana. Carbonate tufas as archives of climate and sedimentary dynamic in volcanic settings, examples from Gran Canaria (Spain)[J],2021.
APA	Rodriguez-Berriguete, Alvaro,Camuera, Jon,&Maria Alonso-Zarza, Ana.(2021).Carbonate tufas as archives of climate and sedimentary dynamic in volcanic settings, examples from Gran Canaria (Spain).SEDIMENTOLOGY.
MLA	Rodriguez-Berriguete, Alvaro,et al."Carbonate tufas as archives of climate and sedimentary dynamic in volcanic settings, examples from Gran Canaria (Spain)".SEDIMENTOLOGY (2021).