Meteorite Impact!: The Danger from Space and South Africa's Mega-impact : the Vredefort Structure |
Contents
FOREWORD | 10 |
Impact the dominant process | 31 |
Old crust in the Vredefort Dome | 37 |
Copyright | |
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Anglo-Boer Archaean Askoppies asteroids Boer bolide breccia Bushveld Complex Cape catastrophe cattle caused central centre coesite collar comet contains core crust crystals deformation deposited early Earth earthquake explosion farm Figure formation formed fractures fragments Gatsrand geological geologists gold granitic Granophyre Group hills impact craters impact event impact structure impact-melt rock Iron Age Johannesburg Kaapvaal craton kilometres known lava layers located Lunar magmatic material melt meteorite meteorite impact middens mineral mining Moon northern occur Ocean OLDEST IMPACT STRUCTURE origin Parys Petioles planet Potchefstroom Pretoria projectile pseudotachylitic pseudotachylitic breccia quarry quartz quartzite reefs region result ridges road rock types samples sediment sedimentary settlement shatter cones so-called Solar System South Africa southern Africa species Stone Age subsp surface tectonic town Transvaal Supergroup Tswaing Uwe Reimold Vaal River Ventersdorp Venterskroon volcanic Vredefort Dome VREDEFORT DOME AREA Vredefort Granophyre Vredefort Mountain Land Vredefort Structure Witwatersrand basin zeyheri zone