Clear essays and videos on how the Earth actually works.
Tap a numbered marker to read what it shows.
A buried erosion surface. The beds below were folded, faulted and worn down before the flat-lying younger beds settled on top — a gap in the record.
Unconformity in the glossaryA break where the crust stretched. The block on the right slid down along the fault plane, offsetting every layer it cuts.
Normal fault in the glossaryA sheet of once-molten rock. Magma forced its way up through the older layers and cooled in place, cutting across them.
Dike in the glossary
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Hello! I make Geoscopy: videos and long-form essays about how the Earth actually works. The geology I grew up reading was either locked in textbooks nobody outside the field opens, or chopped into 30-second clips that miss the point. Geoscopy is what I wanted instead: the real science, explained clearly, without oversimplifications.
There’s 4.5 billion years of history under your feet. I’d like to teach you to read it.
Specimen of the weekMetamorphic rock
Gneiss (pronounced "nice") is a coarse-grained, high-grade metamorphic rock defined by a distinctive compositional layering called gneissic banding, alternating light layers rich in quartz and feldspar and darker layers dominated by biotite, hornblende, or…
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