Geological Reference Card Set- Pocket-Size

Eight plastic cards provide: Geological Time Scale; Photo scale; Drill Sample Logging Aid with Grain Size Classification; Classification of Igneous Rocks; Classification of Sedimentary Rocks; Classification of Plutonic Rocks; Classification of Volcanic Rocks; Periodic Table of the Elements; Relation Between the Metamorphic Facies and the Temperatures and Pressures in the Earth's Crust; Geotechnical Data, showing rock strength, standard penetration test for sands, and undrained shear strength values.