Science ❯ Geology

Geological Formations

Rock Types Pisco Formation Denver Basin Site Assessment Popo Agie Formation La Matilde Formation Natural Structures Salt Domes Fossil Preservation Craters Tava Sandstone Lago Colhué Huapi Formation Historical Geology Limestone Stability Rock Outcroppings Megabreccia Islands Cenotes Mars Jurassic Period Opalinuston Formation

“Smiling” Holy Island Pebble Likely a 350-Million-Year-Old Crinoid Stem, Experts Say

The British Geological Survey traced the tooth-like pattern to a section of crinoid stem built from connected ossicles.

Hidden 20-Kilometer Rock Layer Under Bermuda Offers Answer to Island’s Puzzling Uplift

Denver Museum Unveils 67.5-Million-Year-Old Dinosaur Vertebra Found 763 Feet Underground