首页 / 官方藏书 / Incwadi Yami; or, twenty years' personal experience in South Africa / CHAPTER X. GEOLOGY OF THE MINE AND SURROUNDINGS.—SECTION OF REEF STRATA.—SURFACE SOIL.—CALCAREOUS TUFA.—LIGHT COLORED SHALES.—BLACK CARBONIFEROUS SHALE.—LIMONITE. LANDSLIPS.—BURNING REEF.—SULPHUR VAPORS.—NATIVES AFRAID TO WORK.—COAL PLANTS.—FIRE AND CHOKE-DAMP.—IGNEOUS ROCKS.—CONTRACTION AND EXPANSION OF MINE.—STRATA OF MINE ITSELF.—RED SAND.—TUFA.—YELLOW GROUND.—BLUE GROUND.—RICH AND POOR CLAIMS.—REMARKABLE BOULDERS.—GREASY SLIPS.—MESSRS. MASKELYNE AND FLIGHT’S OBSERVATIONS.

CHAPTER X. GEOLOGY OF THE MINE AND SURROUNDINGS.—SECTION OF REEF STRATA.—SURFACE SOIL.—CALCAREOUS TUFA.—LIGHT COLORED SHALES.—BLACK CARBONIFEROUS SHALE.—LIMONITE. LANDSLIPS.—BURNING REEF.—SULPHUR VAPORS.—NATIVES AFRAID TO WORK.—COAL PLANTS.—FIRE AND CHOKE-DAMP.—IGNEOUS ROCKS.—CONTRACTION AND EXPANSION OF MINE.—STRATA OF MINE ITSELF.—RED SAND.—TUFA.—YELLOW GROUND.—BLUE GROUND.—RICH AND POOR CLAIMS.—REMARKABLE BOULDERS.—GREASY SLIPS.—MESSRS. MASKELYNE AND FLIGHT’S OBSERVATIONS.

Incwadi Yami; or, twenty years' personal experience in South Africa · J. W. Matthews · 第 13 / 42 章