Rainbow Obsidian
(Source: mexconnect.com)
Via BugGuide: Spilosoma virginica - Virginian Tiger Moth
(Source: it-sfullofstars)
Sedimentary layers with bands of hematite, magnetite (gray/black), and jasper (red) in Precambrian banded iron formations (BIFs) of northern Michigan.
Some 3 billion year old Lewisian gneiss having a nap on my BGS North map
(Source: cambriankin)
Deception Island, South Shetland, Antarctic Peninsula
WHOA
