LGM Caucasus: Glaciers and Permafrost 20-10K ybp: Map Modelling Draft


LGM 20-15-10K ybp 300 txt

Great Caucasus LGM 20-10K ybp
Glaciers and permafrost areas
(500-750 a.s.l. and above)
Modeling based on orography

after Liubin 1989

The upper Paleolithic in western Georgia,  Ofer Bar-Yosef, Anna Belfer-Cohen at.al,  2004.  «Figure 9.1. General map of the Caucasus region indicating the expanse of glaciers during at the Last Glacial Maximum (after Liubin 1989) and the location of sites mentioned in the text.»

LGM 20.000 ybp txt

Great Caucasus LGM 20.000 ybp
Permafrost areas (500-750 a.s.l. and above)
Modeling based on orography

Caucasus LGM Based on Crowley T

Caucasus LGM IMG01

def713542d0e4e68cefc0b99b3d0a911

Late Pleistocene and Holocene Glacier Extent in the Georgian Caucasus

7-1210836x5 (1)

Late Pleistocene and Holocene Glacier Extent in the Georgian Caucasus

«The lower threshold of the cirque forms is located at the altitude of ~1900 – 2100 m. This altitude during the Würm was the lower limit of the nival zone. This evidences that in the Late Pleistocene the firn line depression in the river basins of the Western Caucasus was ~1000 – 1200 m. The largest glaciers on the southern slope of the Caucasus descended to ~600 – 700 m. The glaciers were of a compound-valley type and they reached ~16 – 17 km in length. The largest glacier was in the Sakeni valley (with the length of ~25 km).»

«The nival zone was presented at a vast area in the Eastern Caucasus, but it was not extended over the entire territory. It was spread continuously only along the Caucasus watershed range.»

  • Nival zone highest vegetation zone in alpine regions
Chapter 12 - Late Pleistocene (Würmian) Glaciations of the Caucasus

Chapter 12 – Late Pleistocene (Würmian) Glaciations of the Caucasus. Ramin Gobejishvili at-al.

 

Advertisements

კომენტარის დატოვება

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  შეცვლა )

Google+ photo

You are commenting using your Google+ account. Log Out /  შეცვლა )

Twitter picture

You are commenting using your Twitter account. Log Out /  შეცვლა )

Facebook photo

You are commenting using your Facebook account. Log Out /  შეცვლა )

Connecting to %s

%d bloggers like this: