EARTH 10 Lecture Notes - Lecture 5: Silly Putty, Rubber Band, Crystal Habit
Document Summary
Stress: force per unit area, earth can behave as: Elastic: stress removed, earth springs back (like rubber band) Plastic: stress removed, earth keeps new shape (like silly putty)- folding. Brittle: breaks- faulting: strain: deformation produced by stress, geologic structure: any geologic feature produced by rock deformation, fault: fracture in a rock along which one side has moved relative to the other side. Movement along these faults causes earthquakes: horsts & grabens: landscape formed by faulting, reverse: left side higher than right; normal: right side higher than left; strike-slip: more perpendicular, horsts & grabens: Naturally occurring, inorganic solid w/a known chemical composition & a crystalline structure: crystalline: any substance whose atoms are arranged in a regular, periodically repeated pattern (crystalline structure, minerals. Crystal habit: shape of mineral crystal & aggregate growth. Fracture: manner it breaks other than along planes of cleavage. Specific gravity: weight relative to equal volume of water.
