Dust flux, Vostok ice core

Dust flux, Vostok ice core
Two dimensional phase space reconstruction of dust flux from the Vostok core over the period 186-4 ka using the time derivative method. Dust flux on the x-axis, rate of change is on the y-axis. From Gipp (2001).

Friday, January 28, 2011

Identification of stone artifacts in coastal Ghana

Some months ago I posted some photograph of some interesting stone artifacts found in shallow offshore gravels in Ghana.

Here is one of those photos again.

A recent article in Wessex Archaeology's Dredged Up from the Past shows a similar stone found by a dredging operation. One of their more in-depth publications described the stone bead as a weight for a fishing net. Considering how common thrown-net fishing still is in Ghana, the fact that all of these were found offshore supports this hypothesis for the Ghanaian stones. 

1 comment:

  1. hello,
    i feel this stone is to add weight to a drill to make fire.
    many of these can be found.