干旱区生态环境知识资源中心(Arid): Extensive jarosite deposits formed through auto-combustion and weathering of pyritiferous mudstone, Smoking Hills (Ingniryuat), Northwest Territories, Canadian Arctic

Arid

DOI	10.1016/j.chemgeo.2021.120634
	Extensive jarosite deposits formed through auto-combustion and weathering of pyritiferous mudstone, Smoking Hills (Ingniryuat), Northwest Territories, Canadian Arctic - A potential Mars analogue
	Grasby, S. E.; Percival, J. B.; Bilot, I; Ardakani, O. H.; Smith, I. R.; Galloway, J.; Bringue, M.; McLoughlin-Coleman, T.
通讯作者	Grasby, SE (corresponding author), Geol Survey Canada Calgary, 3303 33Rd St Nw, Calgary, AB T2L 2A7, Canada.
来源期刊	CHEMICAL GEOLOGY
ISSN	0009-2541
EISSN	1872-6836
出版年	2022
卷号	587
英文摘要	Jamsite and other metal sulphates are common on Mars and are interpreted to have formed in an extreme acidic saline aqueous environment, similar to modern Earth analogues where jarosite precipitates. We examined an alternative Earth analogue, at the Smoking Hills (known as Ingniryuat by Inuvialuit), Northwest Territories, Arctic Canada. The Smoking Hills are characterised by auto-combusting pyritic mudstones of the Smoking Hills Formation in a polar desert. The Smoking Hills Formation was deposited in an outer shelf to slope marine environment, during a Late Cretaceous Ocean Anoxic Event. Oxidative weathering of this unit creates extensive jarosite-rich deposits, and banded jarosite- and phyllosilicate-rich mudstones, similar to those observed on Mars. Slumping of these mudstones exposes large masses to atmospheric oxygen leading to generation of high temperatures (sufficient to produce paralavas) through pyrite oxidation, and the subsequent formation of a diverse suite of hydrated metal-sulphate minerals. Weathered combustion sites are characterised by a simpler jarosite-rich mineralogy along with thermally-altered mudstone. Away from sites of auto-combustion (bocannes), pyrite-rich layers within the mudstone oxidise to jarosite, creating a yellow-banded appearance in outcrops. These jarosite-rich layers, similar to those observed interbedded in mudstones on Mars, reflect post depositional oxidation processes - not acidic conditions during the time of deposition. As such, this could reflect a more habitable environment than is commonly interpreted for Mars.
英文关键词	Jarosite Bocanne Auto-combustion Pyrite weathering
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000731962600004
WOS关键词	CARBON-ISOTOPE STRATIGRAPHY ; MERIDIANI-PLANUM ; GALE CRATER ; VICTORIA ISLAND ; SVERDRUP BASIN ; MINERALOGY ; ANCIENT ; BIOSTRATIGRAPHY ; OXIDATION ; SULFATES
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374480
作者单位	[Grasby, S. E.; Ardakani, O. H.; Smith, I. R.; Galloway, J.; Bringue, M.] Geol Survey Canada Calgary, 3303 33Rd St Nw, Calgary, AB T2L 2A7, Canada; [Percival, J. B.; Bilot, I] Geol Survey Canada Ottawa, 601 Booth St, Ottawa, ON K1A 0E9, Canada; [McLoughlin-Coleman, T.] Carleton Univ, Dept Earth Sci, Ottawa, ON K1S 5B6, Canada
推荐引用方式 GB/T 7714	Grasby, S. E.,Percival, J. B.,Bilot, I,et al. Extensive jarosite deposits formed through auto-combustion and weathering of pyritiferous mudstone, Smoking Hills (Ingniryuat), Northwest Territories, Canadian Arctic - A potential Mars analogue[J],2022,587.
APA	Grasby, S. E..,Percival, J. B..,Bilot, I.,Ardakani, O. H..,Smith, I. R..,...&McLoughlin-Coleman, T..(2022).Extensive jarosite deposits formed through auto-combustion and weathering of pyritiferous mudstone, Smoking Hills (Ingniryuat), Northwest Territories, Canadian Arctic - A potential Mars analogue.CHEMICAL GEOLOGY,587.
MLA	Grasby, S. E.,et al."Extensive jarosite deposits formed through auto-combustion and weathering of pyritiferous mudstone, Smoking Hills (Ingniryuat), Northwest Territories, Canadian Arctic - A potential Mars analogue".CHEMICAL GEOLOGY 587(2022).