Lineated granodiorite from the Ordivician-aged Columbia pluton.
Nice porphryoblasts (almandine garnet in biotite schist).
Quaternary-aged porphyritic andesite from the Kibo summit of Mt. Kilimanjaro.
Sample collected by Sarah Yun.
Proterozoic-aged alkali feldspar granite. This sample was collected along the Wolf River near White Lake, WI, and is part of the Wolf River batholith.
Sample contributed by Beth Johnson.
Combinado com 12 fotos em mosaico, Câmera canon 5D mark iii, lente 400mm canon, extender canon 2 xiii + montagem que desenvolvi chegando até 8000mm.
Graded bedding in the Ordovician-aged Martinsburg Formation.
this is the right eye image of the 3d pic
Willis Mountain, Virginia
Ostracodes in Silurian-aged Tonoloway limestone.
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