Saturday, January 4, 2014

Sweeping Cobwebs From the Edges of My Mind


Jebel Irhoud 1 (Link)
Loschbour (Link)
Figure 1: Map of West Eurasian populations and Principal Component Analysis. (b) PCA on all present-day West Eurasians, with the ancient and selected eastern non-Africans projected. European hunter-gatherers fall beyond modern Europe in the direction of European differentiation from the Near East. Stuttgart clusters with other Neolithic Europeans and present-day Sardinians. MA1 falls outside the variation of modern day West Eurasians in the direction of southern-northern differentiation along dimension 2 and between the European and Near Eastern clines along dimension 1. (Link)


  1. Marnie, the beautiful world map at NOAH @ 110m lacks the Caspian Sea, far as I know the northern part is very deep. Any idea on that?

  2. The NOAA Map was made as of 2008. It does not include ice sheets, or inland lakes such as the Caspian Sea, the Great Lakes or any of the Saharan Megalakes. Intermittently, there were also lakes on the Arabian Peninsula. These inland bodies of water fluctuated over time.

    The NOAA map is drawn only from sea level, so it can't properly account for things such as precipitation and melt water, which are what drive the creation and depletion of inland lakes.

    Here is an alternate map which reflects resent research on the size of the Caspian Sea during the last ice age:

    There is currently quite a bit of research on the dynamics of the Caspian Sea during the last ice age.


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