water intrusion
81Barrage de Petit-Saut — Géographie Pays …
82Mono–Inyo Craters — Coordinates: 37°53′N 119°0′W / 37.883°N 119°W / 37.883; 119 …
83plate 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… …
84Geology of the Australian Capital Territory — Australia grew around three fused pieces of very ancient continental crust (cratons). The geology of the Australian Capital Territory includes rocks dating from the Ordovician around 480 million years ago, whilst most rocks are from the Silurian …
85Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… …
86Mineralogy of the Pikes Peak Region — Pikes Peak seen from the Garden of the Gods. The Pikes Peak region is renowned for its rare mineral specimens. It is a favorite collecting area for rock hounds and serious collectors alike. Scientists from around the world come to Colorado to… …
87Metamorphism — For other uses, see Metamorphism (disambiguation). Schematic representation of a metamorphic reaction. Abbreviations of minerals: act = actinolite; chl = chlorite; ep = epidote; gt = garnet; hbl = hornblende; plag = plagioclase. Two minerals… …
88Geology of Jersey — The geology of Jersey is characterised by the Late Proterozoic Brioverian volcanics, the Cadomian Orogeny, and only small signs of later deposits from the Cambrian and Quaternary periods. The kind of rocks go from conglomerate to shale, volcanic …
89Cretaceous Period — Interval of geologic time from с 144 to 65 million years ago. During the Cretaceous the climate was warmer than today. In the seas, marine invertebrates flourished, and bony fishes evolved. On land, flowering plants arose, and insects, bees in… …
90Cushetunk Mountain — (Round Valley Reservoir) Elevation 834 ft (254 m) …
