Earth Science, Geologic Time & Fossils

Aucella

fossil mollusk genus

Bomb

volcanic ejecta

Mica

Structure, Properties, Occurrence, & Facts

Air Mass

meteorology

Gaylussite

mineral

Melilite

Properties & Facts

Appleton Layer

atmosphere

Oxisol

pedology

Sanidinite Facies

geology

Sverdrup, Harold Ulrik

Norwegian oceanographer

Tectosilicate

Structure & Facts

Boscovich, Ruggero Giuseppe

Italian astronomer and mathematician

Loess

sedimentary deposit

Geoid

Definition & Examples

Ptilodus

fossil mammal genus

Cataclastite

rock