Geology

Covers earth's history and basic facts; Geologic Time; and Earth's surface, water, ecosystems, and atmosphere.

The ultimate reference guide to the all-encompassing essential science of earth that includes geology, meteorology, oceanography and astronomy. 6 page guide includes: Astronomy; Components of Study; The Four Spheres; Gravity & Orbital Motion; The Earth; The Moon; Structures of the Earth; History of the Earth; Plate Tectonics; Earthquakes & Volcanoes; Types of Rocks;; Igneous Rocks; Metamorphic Rocks; Sedimentary Rocks; Minerals, Ores & Crystals; Hydrosphere; Water Cycle & Moving Water; Energy & Discharge Profile; Base Level Work of Streams; Mass Wasting Competence & Capacity; Deposition; Natural Levees & Stream Valleys; Resistant Beds, Rapids & Waterfalls; Meanders & Oxbow Lakes; Wide Valleys; Drainage Patterns; Groundwater Depletion & Contamination; Springs, Caves & Caverns; Atmosphere: Atmospheric Composition; Atmospheric Layers; Wind; Clouds; Meteorology; and Climate.

Identify 135 of the most sought after and popular gemstones, minerals and crystals through photos and descriptions of color variety, luster and transparency range. Scientific and metaphysical properties of each gemstone plus significant meanings or historical uses, or how it is formed.