Interweaving threads from science, politics, economics, and history.
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).
Sunday, August 20, 2017
Some gold and silver on display at Ottawa's Museum of Nature.
I've always like dendritic gold
Wiry native silver
Had some problems with my SD card reader, and found a few more:
Another dendritic gold
Looks like a euhedral gold grain suffering from some wear.