Giant Flood Caused By YD 12,900 Event?

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In summary, the Black Mat (2008) report discusses the presence of dark gray to black layers known as "black mats" in North America during the Younger Dryas period. These layers contain higher levels of organic carbon and indicate moist conditions unlike before or after their deposition. It is suggested that these black mats may be the result of increased precipitation rather than flooding or continental burning. However, the dating of these black mats predates the start of the Younger Dryas period.
  • #1
Mammo
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The Younger Dryas ‘‘black mats’’ and the Rancholabrean termination in North America report Black Mat (2008) states:

Most Younger Dryas (YD) age black layers or ‘‘black mats’’ are
dark gray to black because of increased organic carbon (0.05–
8%) compared with strata above and below (6, 7). Although
these layers are not all alike, they all represent relatively moist
conditions unlike immediately before or after their time of
deposition as a result of higher water tables.

I wasn't aware of this before. The main 'black mat' appears to be associated with a sudden increase in the water table, as opposed to continental burning. Is it possible that an extraterrestrial event was also responsible for continental flooding, or is it simply due to a dramatic drop in temperature?
 
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  • #2
Black mats are more common than YD only, it's mostly remains of algaea, which could suggest still pools drying out. Pool forming is not a feature of floods washing the algaea away, but more something of increased (seasonal?) precipitation.

Furthermore the 10,900 BP dating of many black mats is still before the isotopical and layer counted start of the Younger Dryas. See earlier posts at the beginning of this thread.
 
  • #3
Andre said:
Black mats are more common than YD only, it's mostly remains of algaea, which could suggest still pools drying out. Pool forming is not a feature of floods washing the algaea away, but more something of increased (seasonal?) precipitation.

Furthermore the 10,900 BP dating of many black mats is still before the isotopical and layer counted start of the Younger Dryas. See earlier posts at the beginning of this thread.

I was beginning to think that it was a rubbish idea. Nevermind.
 

Related to Giant Flood Caused By YD 12,900 Event?

1. What is the YD 12,900 Event?

The YD 12,900 Event refers to a period of time approximately 12,900 years ago during the Younger Dryas period, where there was a sudden and significant cooling of the Earth's climate. This event is also known as the "Big Freeze" and is believed to have lasted for about 1,300 years.

2. What caused the YD 12,900 Event?

The exact cause of the YD 12,900 Event is still a topic of debate among scientists. Some theories suggest that it was caused by a comet or asteroid impact, while others propose that it was due to changes in ocean circulation or solar activity. More research is needed to determine the exact cause.

3. Was the YD 12,900 Event a global event?

Yes, the YD 12,900 Event is believed to have affected the entire globe, causing a significant drop in temperatures and changes in climate patterns. Evidence of this event has been found in various regions around the world, including North America, Europe, and Asia.

4. What evidence supports the theory of a giant flood caused by the YD 12,900 Event?

One of the main pieces of evidence for a giant flood caused by the YD 12,900 Event is the presence of large amounts of sediment and debris in different regions, including North America and Europe. This sediment is believed to have been deposited by massive flooding caused by the sudden melting of glacial ice during the event.

5. How did the giant flood impact human populations?

The giant flood caused by the YD 12,900 Event likely had a significant impact on human populations at the time. It is believed that the sudden change in climate and the resulting flooding may have led to the extinction of large animals and the disruption of human societies and cultures. However, more research is needed to fully understand the effects of this event on human populations.

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