DOI: 10.1016/j.epsl.2017.12.037
Scopus记录号: 2-s2.0-85044768889
论文题名: Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin, UK)
作者: Xu W. ; Ruhl M. ; Jenkyns H.C. ; Leng M.J. ; Huggett J.M. ; Minisini D. ; Ullmann C.V. ; Riding J.B. ; Weijers J.W.H. ; Storm M.S. ; Percival L.M.E. ; Tosca N.J. ; Idiz E.F. ; Tegelaar E.W. ; Hesselbo S.P.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 484 起始页码: 396
结束页码: 411
语种: 英语
英文关键词: carbon-isotope stratigraphy
; global weathering rates
; gravity-flow deposits
; oceanic anoxic event (OAE)
; siderite
; Toarcian (Early Jurassic)
Scopus关键词: Carbon
; Deposits
; Geochemistry
; Iron deposits
; Iron ores
; Isotopes
; Sedimentology
; Sulfur compounds
; Trace elements
; Weathering
; Carbon isotope stratigraphy
; Early Jurassic
; Global weathering rates
; Gravity flows
; Oceanic anoxic events
; siderite
; Stratigraphy
; biostratigraphy
; carbon cycle
; carbon isotope
; deposition
; depositional environment
; evaporite
; global climate
; paleoceanography
; paleotemperature
; siderite
; stratigraphy
; sulfide
; Toarcian
; weathering
; Cardigan Bay
; United Kingdom
; Wales
英文摘要: The late Early Jurassic Toarcian Stage represents the warmest interval of the Jurassic Period, with an abrupt rise in global temperatures of up to ∼7 °C in mid-latitudes at the onset of the early Toarcian Oceanic Anoxic Event (T-OAE; ∼183 Ma). The T-OAE, which has been extensively studied in marine and continental successions from both hemispheres, was marked by the widespread expansion of anoxic and euxinic waters, geographically extensive deposition of organic-rich black shales, and climatic and environmental perturbations. Climatic and environmental processes following the T-OAE are, however, poorly known, largely due to a lack of study of stratigraphically well-constrained and complete sedimentary archives. Here, we present integrated geochemical and physical proxy data (high-resolution carbon-isotope data (δ13C), bulk and molecular organic geochemistry, inorganic petrology, mineral characterisation, and major- and trace-element concentrations) from the biostratigraphically complete and expanded entire Toarcian succession in the Llanbedr (Mochras Farm) Borehole, Cardigan Bay Basin, Wales, UK. With these data, we (1) construct the first high-resolution biostratigraphically calibrated chemostratigraphic reference record for nearly the complete Toarcian Stage, (2) establish palaeoceanographic and depositional conditions in the Cardigan Bay Basin, (3) show that the T-OAE in the hemipelagic Cardigan Bay Basin was marked by the occurrence of gravity-flow deposits that were likely linked to globally enhanced sediment fluxes to continental margins and deeper marine (shelf) basins, and (4) explore how early Toarcian (tenuicostatum and serpentinum zones) siderite formation in the Cardigan Bay Basin may have been linked to low global oceanic sulphate concentrations and elevated supply of iron (Fe) from the hinterland, in response to climatically induced changes in hydrological cycling, global weathering rates and large-scale sulphide and evaporite deposition. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110073
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Earth Sciences, University of Oxford, Oxford, OX1 3AN, United Kingdom; British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom; School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, United Kingdom; Department of Mineralogy, the Natural History Museum, Cromwell Road, London, SW7 5BD, United Kingdom; Shell Technological Center, Houston, 3333 South HW6, Houston, TX 77082, United States; Camborne School of Mines, Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE, United Kingdom; Shell Global Solutions International B.V., Shell Technology Centre Amsterdam, Grasweg 31, Amsterdam, HW 1031, Netherlands; Institut des sciences de la Terre, Géopolis, Université de Lausanne, Lausanne, 1015, Switzerland
Recommended Citation:
Xu W.,Ruhl M.,Jenkyns H.C.,et al. Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin, UK)[J]. Earth and Planetary Science Letters,2018-01-01,484