Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31601.1 |
Extensive Early Cretaceous (Albian) methane seepage on Ellef Ringnes Island, Canadian High Arctic | |
Williscroft, Krista1; Grasby, Stephen E.1,2; Beauchamp, Benoit1; Little, Crispin T. S.3; Dewing, Keith1,2; Birgel, Daniel4; Poulton, Terry2; Hryniewicz, Krzysztof5 | |
2017-07-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN
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ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2017 |
卷号 | 129 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; England; Germany; Poland |
英文摘要 | During field mapping of Ellef Ringnes -Island, Canadian Arctic Archipelago, 139 isolated Early Cretaceous methane seep deposits were found from 75 field sites. Stable isotopes of the carbonates have values of delta C-13 = -47% to -35% and d18O = -4.0% to + 0.7%. Isoprenoids in organics from one of the seeps are significantly depleted in C-13, with the most negative d13C value of -118% and -113% for 2,6,10,15,19-pentamethylicosane (PMI) and phytane/crocetane, respectively. These values indicate an origin through methane oxidation, consistent with biomarkers that are characteristic for anaerobic methanotrophic archaea within the seep deposits, accompanied by terminally branched fatty acids showing similar C-13 values (-92%) sourced from sulfate-reducing bacteria. The seep deposits contain a moderate-diversity macrofaunal assemblage comprising ammonites, bivalves, gastropods, scaphopods, "vestimentiferan" worm tubes, and brachiopods. The assemblage is dominated numerically by species that probably had chemosymbionts. The seep deposits formed in the subsurface within strong redox zones, in an otherwise normal marine setting, characterized by oxic waters at high paleolatitudes. While geographically widespread over an area of similar to 10,000 km(2), seep deposits on Ellef Ringnes Island occur in a narrow stratigraphic horizon, suggesting a large release of biogenic methane occurred over a brief period of time. This gas release was coincident with a transition from a cold to warm climate during the latest early Albian, and we hypothesize that this may have been related to gas hydrate release. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405373200002 |
WOS关键词 | GULF-OF-MEXICO ; WESTERN INTERIOR SEAWAY ; AUTHIGENIC CARBONATE FORMATION ; MESOZOIC CONVERGENT MARGIN ; SVERDRUP BASIN ; ANAEROBIC OXIDATION ; HYDROCARBON-SEEP ; GAS HYDRATE ; LIPID BIOMARKER ; ISOTOPIC COMPOSITION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25143 |
专题 | 地球科学 |
作者单位 | 1.Univ Calgary, Dept Geosci, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada; 2.Nat Resources Canada, Geol Survey Canada, 3303 33rd St NW, Calgary, AB T2L 2A7, Canada; 3.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; 4.Univ Hamburg, Inst Geol, D-20146 Hamburg, Germany; 5.Polish Acad Sci, Inst Paleobiol, Ul Twarda 51-55, PL-00818 Warsaw, Poland |
推荐引用方式 GB/T 7714 | Williscroft, Krista,Grasby, Stephen E.,Beauchamp, Benoit,et al. Extensive Early Cretaceous (Albian) methane seepage on Ellef Ringnes Island, Canadian High Arctic[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2017,129. |
APA | Williscroft, Krista.,Grasby, Stephen E..,Beauchamp, Benoit.,Little, Crispin T. S..,Dewing, Keith.,...&Hryniewicz, Krzysztof.(2017).Extensive Early Cretaceous (Albian) methane seepage on Ellef Ringnes Island, Canadian High Arctic.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,129. |
MLA | Williscroft, Krista,et al."Extensive Early Cretaceous (Albian) methane seepage on Ellef Ringnes Island, Canadian High Arctic".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 129(2017). |
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