Browse all women's premium t-shirts from Tectonic City

• Michel-Lévy interference color chart

• Tree frog design by 7-year-old

• Gay geology: normal fault

• Rocks before cocks

• I'm a big fan (an alluvial fan)

• My data is better than your data (white ink)

• Atomic structure of beryl

• In This Geology House...

• Let's Get Geophysical (white ink)

• Smash the Petri-archy

• Stereonet (white ink)

• Let's Get Geophysical (black ink)