Jewels of the Early Earth

Bücher

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Over 650 vivid color photos reveal the geo-collectible fossils and minerals associated with the first two billion years of earths history. The engaging text explores the geology of shield areas and their associated rocks and minerals. Also examined are pegmatites and their associated minerals, including attractive minerals and crystals like emerald and aquamarine. Early minerals and rocks associated with the formation of the earths atmosphere are also revealedthe geologic strata known as BIF (Banded Iron Formation). Some of the earths oldest fossils are included, displayed in outcrops harboring the earliest evidence of life. A variety of unusual minerals associated with early limestone-like rocks (now usually found as marble) are revealed, including highly prized rocks used for decorative carvings as well as gemstones. Greenstone belts, among the earliest rocks on the planet, are also examined and their interesting association with much of the earths gold deposits is explored. This book is a must for anyone passionate about geology and paleontology.