tillite
81plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… …
82Orange River — River, southern Africa. It rises in the Lesotho Highlands as the Sinqu River and flows west as the Orange across South Africa. It passes the southern edge of the Kalahari Desert and winds through the Namib Desert before draining into the Atlantic …
83Permian Period — Interval of geologic time, 290–248 million years ago. The last of the six periods of the Paleozoic Era, it follows the Carboniferous Period. During the Permian, the continents joined to form a single supercontinent, Pangea. Hot, dry conditions… …
84sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
85Sturtian Series — ▪ geology division of Proterozoic rocks in south central Australia (the Proterozoic Eon lasted from 2.5 billion to 540 million years ago). The Sturtian Series, which forms the lower part of the Umberatana Group, is partly interpreted… …
86Marine geology of the Cape Peninsula and False Bay — Contents 1 Introduction 2 The geological structure of the region 2.1 Malmesbury group deposition 2.1.1 Appearance of the exposed Malmesbury group rocks …
87Nooitgedacht Glacial Pavements — The Nooitgedacht Glacial Pavements comprise a geological feature between Kimberley and Barkly West, South Africa, pertaining to the Palaeozoic age Dwyka Ice Age, or Karoo Ice Age, (some 300 million years ago) where the glacially scoured (smoothed …
88Geologie Australiens — Geologische Übersicht von Australien nach Gesteinsalter Die Geologie Australiens umfasst mit so gut wie allen bekannten Gesteinen aller geologischen Perioden einen Zeitraum von mehr als 3,8 Milliarden Jahren der Erdgeschichte. Inhaltsverzeichnis …
89Irthing — 54°55′N 2°48′W / 54.917, 2.8 …
90Müggelberge — 52° 24′ 58″ N 13° 38′ 00″ E / 52.41611111, 13.63333333 …
