Older Peron Transgression

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The Older Peron Transgression was an unusually warm climatic segment of the Holocene , which was accompanied by an elevated sea ​​level . The transgression continued in the Atlantic between 5000 and 4900 BC. Chr. , And lasted until 4100 v. Chr.

definition

Panorama of Cape Peron

The Elder Peron Transgression, also known as the Elder Peron Event , was defined in 1961 by RW Fairbridge , who worked on sea level fluctuations, and was named after Cape Peron in Western Australia . At the cape there is an eye-catching surf terrace that has been climatologically examined.

description

The Older Peron Transgression was a period of time with a generally mild climate, which was very conducive to increased plant growth. The very warm temperatures caused the glaciers and ice sheets of the cryosphere to retreat around the world and thus a rise in sea levels. Globally, the sea level was even 2.5 to 4 meters higher than the average value of the 20th century . The elevated sea level lasted for several centuries and left typical surf terraces on several coasts.

In the bristle jaw chronology , which dates to 6700 BC. The best growth year of the long-lived pine fell at the beginning of the Elder Peron Transgression in 4850 BC. Chr.

The Elder Peron Transgression was the first of several transgressions during the Middle Holocene. This was followed by the Younger Peron Transgression , the Abrolhos Transgression and the Rottnest Transgression . The Younger Peron Transgression took place in the period 4000 to 3400 BC. BC and reached a sea level that was 3 meters above the level of the 20th century . The Abrolhos transgression (period 2600 to 2100 BC) was 1.5 meters and the subsequent Rottnest transgression (period 1600 to 1000 BC) was 1 meter above sea ​​level .

The mild climate during the Elder Peron Transgression or the Neolithic Subpluvial is occasionally associated with the Golden Age or the Garden of Eden .

See also

Individual evidence

  1. ^ Baker, Robert GV, Haworth, Robert J. and Flood, Peter G .: An Oscillating Holocene Sea-level? Revisiting Rottnest Island, Western Australia and the Fairbridge Eustatic Hypothesis . In: Journal of Coastal Research . tape 42 , 2004, p. 3-14 .