Footprint from a dinosaur

Spherical weathering

Obsidian lava flow

Pillow lava cut by a very thin dyke

Today is #InternationalRockDay 🙀 Most humans get it wrong, but as #Cats with #geologists we know better😽
Here, some of our favourite rocks fig1 a #rock with a footprint from a #dinosaur, fig2 a rock with #SphericalWeathering, fig3 a #lavaflow made of #obsidian fig4 #pillowlava

#geologywithcats