An anoxic event describes a period wherein large expanses of Earth's oceans were depleted of dissolved oxygen (O2), creating toxic, euxinic (anoxic and...
41 KB (5,022 words) - 00:27, 8 September 2024
event had two main pulses, the first being the Pliensbachian-Toarcian boundary event (PTo-E). The second, larger pulse, the Toarcian Oceanic Anoxic Event...
114 KB (11,915 words) - 22:34, 13 September 2024
Cenomanian-Turonian boundary event, also known as the Cenomanian-Turonian extinction, Cenomanian-Turonian Oceanic Anoxic Event (OAE 2), and referred to also...
101 KB (10,464 words) - 19:58, 7 August 2024
Extinction Event, the Toarcian Oceanic Anoxic Event, the Cenomanian-Turonian Oceanic Anoxic Event, the Cretaceous-Palaeogene Extinction Event, and the Palaeocene-Eocene...
147 KB (15,027 words) - 22:22, 11 September 2024
Anoxic waters are areas of sea water, fresh water, or groundwater that are depleted of dissolved oxygen. The US Geological Survey defines anoxic groundwater...
19 KB (2,224 words) - 21:41, 22 September 2024
Late Ordovician mass extinction (redirect from Ordovician extinction event)
longest-lasting anoxic events in geologic time. The cause of the Hirnantian-Rhuddanian anoxic event is uncertain. Like most global anoxic events, an increased...
101 KB (11,007 words) - 17:57, 17 September 2024
Jurassic (section Toarcian Oceanic Anoxic Event)
started around 183 million years ago and is marked by the Toarcian Oceanic Anoxic Event, a global episode of oceanic anoxia, ocean acidification, and elevated...
231 KB (24,898 words) - 17:27, 30 August 2024
Late Devonian extinction (redirect from Frasnian-Fammian event)
spaced events here, as shown by the presence of two distinct anoxic shale layers. There is evidence that the Kellwasser event was a two-pulsed event, with...
76 KB (8,653 words) - 13:33, 24 September 2024
The Selli Event, also known as OAE1a, was an oceanic anoxic event (OAE) of global scale that occurred during the Aptian stage of the Early Cretaceous...
26 KB (2,694 words) - 20:19, 30 June 2024