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A Manual of Elementary Geology
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Chapter 28 VOLCANIC ROCKS.
Word Count: 5642
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Released on: 06/12/2017
Volcanic cones and craters, how formed - Mineral composition and texture of volcanic rocks - Varieties of felspar -
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1 Chapter 1 ON THE DIFFERENT CLASSES OF ROCKS.2 Chapter 2 AQUEOUS ROCKS-THEIR COMPOSITION AND FORMS OF STRATIFICATION.3 Chapter 3 ARRANGEMENT OF FOSSILS IN STRATA-FRESHWATER AND MARINE.4 Chapter 4 CONSOLIDATION OF STRATA AND PETRIFACTION OF FOSSILS.5 Chapter 5 ELEVATION OF STRATA ABOVE THE SEA-HORIZONTAL AND INCLINED STRATIFICATION.6 Chapter 6 DENUDATION.7 Chapter 7 ALLUVIUM.8 Chapter 8 CHRONOLOGICAL CLASSIFICATION OF ROCKS.9 Chapter 9 ON THE DIFFERENT AGES OF THE AQUEOUS ROCKS.10 Chapter 10 CLASSIFICATION OF TERTIARY FORMATIONS.-POST-PLIOCENE GROUP.11 Chapter 11 NEWER PLIOCENE PERIOD.-BOULDER FORMATION.12 Chapter 12 No.1213 Chapter 13 NEWER PLIOCENE STRATA AND CAVERN DEPOSITS.14 Chapter 14 OLDER PLIOCENE AND MIOCENE FORMATIONS.15 Chapter 15 UPPER EOCENE FORMATIONS.16 Chapter 16 No.1617 Chapter 17 CRETACEOUS GROUP.18 Chapter 18 WEALDEN GROUP.19 Chapter 19 DENUDATION OF THE CHALK AND WEALDEN.20 Chapter 20 OOLITE AND LIAS.21 Chapter 21 No.2122 Chapter 22 TRIAS OR NEW RED SANDSTONE GROUP.23 Chapter 23 PERMIAN OR MAGNESIAN LIMESTONE GROUP.24 Chapter 24 THE COAL, OR CARBONIFEROUS GROUP.25 Chapter 25 No.2526 Chapter 26 OLD RED SANDSTONE, OR DEVONIAN GROUP.27 Chapter 27 SILURIAN GROUP.28 Chapter 28 VOLCANIC ROCKS.29 Chapter 29 No.2930 Chapter 30 ON THE DIFFERENT AGES OF THE VOLCANIC ROCKS.31 Chapter 31 No.3132 Chapter 32 No.3233 Chapter 33 PLUTONIC ROCKS-GRANITE.34 Chapter 34 ON THE DIFFERENT AGES OF THE PLUTONIC ROCKS.35 Chapter 35 METAMORPHIC ROCKS.36 Chapter 36 No.3637 Chapter 37 ON THE DIFFERENT AGES OF THE METAMORPHIC ROCKS.38 Chapter 38 MINERAL VEINS.