Peristiwa anoksia

Peristiwa anoksia lautan atau peristiwa anoksia berlaku apabila lautan Bumi sepenuhnya kesusutan oksigen (O₂) di bawah paras permukaan. Istilah serupa euksinia merujuk keadaan anoksia dalam kehadiran H₂S hidrogen sulfida. Sungguhpun peristiwa anoksia tidak berlaku selama berjuta-juta tahun, catatan geologi menunjukkan bahawa ini sudah berlaku berkali-kali dahulu. Peristiwa anoksia mungkin telah menyebabkan kepupusan besar-besaran.^[1] Kepupusan besar-besaran ini termasuk sesetengah yang digunakan oleh ahli geobiologi sebagai penanda masa dalam pentarikhan biostratigrafi. Peristiwa anoksia lautan dipercayai^[2] berhubung kait dengan kuat dengan lelap dalam peredaran arus lautan kekunci, dengan pemanasan iklim dan gas rumah hijau.

Lihat juga

Rujukan

^ Wignall, Paul B. (24 Mei 1996). "Oceanic Anoxia and the End Permian Mass Extinction". Science. 5265. 272 (5265): 1155–1158. Bibcode:1996Sci...272.1155W. doi:10.1126/science.272.5265.1155. PMID 8662450. Dicapai pada 12 September 2011. Unknown parameter |coauthors= ignored (|author= suggested) (bantuan)
^ Peters, Walters, Modowan, K.E., C.C., J.M. (2005). The Biomarker Guide, Volume 2: Biomarkers and Isotopes in the Petroleum Exploration and Earth History. Cambridge University Press. m/s. 749. ISBN 978-0-521-83762-0.CS1 maint: multiple names: authors list (link)

Bacaan lanjut

Kashiyama, Yuichiro (Mei 2008). "Diazotrophic cyanobacteria as the major photoautotrophs during mid-Cretaceous oceanic anoxic events: Nitrogen and carbon isotopic evidence from sedimentary porphyrin". Organic Geochemistry. 39 (5): 532–549. doi:10.1016/j.orggeochem.2007.11.010. Unknown parameter |coauthors= ignored (|author= suggested) (bantuan); |access-date= requires |url= (bantuan)
Kump, L.R., Pavlov, A., and Arthur, M.A. (2005). "Massive release of hydrogen sulfide to the surface ocean and atmosphere during intervals of oceanic anoxia". Geology. 33 (5): 397–400. Bibcode:2005Geo....33..397K. doi:10.1130/G21295.1.CS1 maint: multiple names: authors list (link)
Hallam, A. (2004). Catastrophes and lesser calamities: the causes of mass extinctions. Oxford [Oxfordshire]: Oxford University Press. m/s. 91–607. ISBN 0-19-852497-8.
Demaison G.J. and Moore G.T., (1980),"Anoxic environments and oil source bed genesis".American Association of Petroleum Geologists (AAPG) Bulletin. Vol.54,No8.

Pautan luar

Hot and stinky: The oceans without oxygen
Charles E. Jones, Hugh C. Jenkyns (February 2001). "Seawater strontium isotopes, oceanic anoxic events, and seafloor spreading" (PDF). American Journal of Science. Diarkibkan daripada yang asal (PDF) pada 2005-05-07. Dicapai pada 2014-01-17.
Cretaceous climate-ocean dynamics Diarkibkan 2005-10-31 di Wayback Machine
R.D. Pancost, N. Crawford, S. Magness, A. Turner, H.C. Jenkyns, J.R. Maxwell (2004). "Further evidence for photic-zone euxinic conditions during Mesozoic oceanic anoxic events" (PDF). Journal of the Geological Society. 161: 353–364.CS1 maint: multiple names: authors list (link)
Crude – the incredible journey of oil, Australian Broadcasting Corporation
Hugh Jenkyns talking about the Bonarelli Level and OAEs [1]

Templat:Pencemaran laut

[1] Wignall, Paul B. (24 Mei 1996). "Oceanic Anoxia and the End Permian Mass Extinction". Science. 5265. 272 (5265): 1155–1158. Bibcode:1996Sci...272.1155W. doi:10.1126/science.272.5265.1155. PMID 8662450. Dicapai pada 12 September 2011. Unknown parameter |coauthors= ignored (|author= suggested) (bantuan)

[2] Peters, Walters, Modowan, K.E., C.C., J.M. (2005). The Biomarker Guide, Volume 2: Biomarkers and Isotopes in the Petroleum Exploration and Earth History. Cambridge University Press. m/s. 749. ISBN 978-0-521-83762-0.CS1 maint: multiple names: authors list (link)

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