door barthol » vr 31 aug 2012, 23:24
Als ik het goed begrijp is zoiets in het verleden wel gebeurd. Gerelateerd aan een Super-Greenhouse Event en een Oceanic Anoxic Event.
fragment uit
Wikipedia/Anoxic-Event :
This is a recent understanding. This picture was only pieced together during the last three decades. The handful of known and suspected anoxic events have been tied geologically to large-scale production of the world's oil reserves in worldwide bands of black
shale in the
geologic record. Likewise the high relative temperatures believed linked to so called "
super-greenhouse events"
[6] Oceanic
anoxic events[3] were in all likelihood caused or stimulated by extreme episodes of volcanic outgassing. These events contributed to the characteristic elevated
carbon dioxide levels four to six times current levels that are attributed to these periods. At even a few degrees warmer, rain forests are extremely vulnerable to fire hazards. These forests have little natural resistance to fires,
[6] and some conjecture a critical tipping point. Practically overnight the increase of temperature might have been reached and triggered a huge burn-off
[6] of planetary forests. This would have released unprecedented amounts of carbon dioxide into the atmosphere. With a change of mean temperatures of three degrees Celsius, the ice caps melted. This triggered a runaway effect. In the super-greenhouse ecologies—the term meaning average temperature rose to or beyond six degrees above today—the seas were so warm, it is believed the water temperatures at the two poles
[7] were in the lower 80s°F (i.e. above 27 °C).
[3] The
Cretaceous and
Jurassic periods' world ecologies were essentially ice free,
[3] had massive storms driven by warm oceans, and were dying from the double hit
[3] of lack of oxygen and
toxic hydrogen sulfide accumulations at lower layers because of a shut down in the
ocean conveyor belts.
[3] In this time, most of the world would experience the highly noxious scent of rotten eggs and the seas would have slowly acquired a deep green hue from the high amounts of algae.
Boeiend is ook de ABC-science documentaire:
Crude - The incredible journey of OilAls ik het goed begrijp is zoiets in het verleden wel gebeurd. Gerelateerd aan een Super-Greenhouse Event en een Oceanic Anoxic Event.
fragment uit [url=http://en.wikipedia.org/wiki/Anoxic_event]Wikipedia/Anoxic-Event[/url] :
[quote]This is a recent understanding. This picture was only pieced together during the last three decades. The handful of known and suspected anoxic events have been tied geologically to large-scale production of the world's oil reserves in worldwide bands of black [url=http://en.wikipedia.org/wiki/Shale]shale[/url] in the [url=http://en.wikipedia.org/wiki/Geologic_record]geologic record[/url]. Likewise the high relative temperatures believed linked to so called "[url=http://en.wikipedia.org/w/index.php?title=Super-greenhouse_event&action=edit&redlink=1]super-greenhouse events[/url]"[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-3_degrees_C-5][6][/url][/sup] Oceanic [b]anoxic events[/b][sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-HistOfOil-2][3][/url][/sup] were in all likelihood caused or stimulated by extreme episodes of volcanic outgassing. These events contributed to the characteristic elevated [url=http://en.wikipedia.org/wiki/Carbon_dioxide]carbon dioxide[/url] levels four to six times current levels that are attributed to these periods. At even a few degrees warmer, rain forests are extremely vulnerable to fire hazards. These forests have little natural resistance to fires,[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-3_degrees_C-5][6][/url][/sup] and some conjecture a critical tipping point. Practically overnight the increase of temperature might have been reached and triggered a huge burn-off[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-3_degrees_C-5][6][/url][/sup] of planetary forests. This would have released unprecedented amounts of carbon dioxide into the atmosphere. With a change of mean temperatures of three degrees Celsius, the ice caps melted. This triggered a runaway effect. In the super-greenhouse ecologies—the term meaning average temperature rose to or beyond six degrees above today—the seas were so warm, it is believed the water temperatures at the two poles[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-3_degrees_C-2-6][7][/url][/sup] were in the lower 80s°F (i.e. above 27 °C).[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-HistOfOil-2][3][/url][/sup] The [url=http://en.wikipedia.org/wiki/Cretaceous]Cretaceous[/url] and [url=http://en.wikipedia.org/wiki/Jurassic]Jurassic[/url] [url=http://en.wikipedia.org/wiki/Period_(geology)]periods'[/url] world ecologies were essentially ice free,[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-HistOfOil-2][3][/url][/sup] had massive storms driven by warm oceans, and were dying from the double hit[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-HistOfOil-2][3][/url][/sup] of lack of oxygen and [url=http://en.wikipedia.org/wiki/Toxic]toxic[/url] [url=http://en.wikipedia.org/wiki/Hydrogen_sulfide]hydrogen sulfide[/url] accumulations at lower layers because of a shut down in the [url=http://en.wikipedia.org/wiki/Thermohaline_circulation]ocean conveyor belts[/url].[sup][url=http://en.wikipedia.org/wiki/Anoxic_event#cite_note-HistOfOil-2][3][/url][/sup] [b][color=#ff0000]In this time, most of the world would experience the highly noxious scent of rotten eggs and the seas would have slowly acquired a deep green hue from the high amounts of [/color][url=http://en.wikipedia.org/wiki/Algae][color=#ff0000]algae[/color][/url][color=#ff0000].[/color][/b][/quote]
Boeiend is ook de ABC-science documentaire: [url=http://www.abc.net.au/science/crude/]Crude - The incredible journey of Oil[/url]
