acid volcanic units
81Oil shale in China — is an important source of unconventional oil. A total Chinese oil shale resource amounts of 720 billion tonnes, located in 80 deposits of 47 oil shale basins. This is equal to 48 billion tonnes of shale oil.[1] At the same… …
82pollution — /peuh looh sheuhn/, n. 1. the act of polluting or the state of being polluted. 2. the introduction of harmful substances or products into the environment: air pollution. [1350 1400; ME pollucioun ( < OF) < LL pollution , s. of pollutio… …
83Mercury regulation in the United States — is a set of laws and regulations limiting the maximum concentrations of mercury (Hg) that is permitted in air, water, soil, food and drugs. These laws and regulations are promulgated by U.S. Federal Agencies such as the Environmental Protection… …
84Zeolite — Zeolites (Greek, zein , to boil ; lithos , a stone ) are hydrated aluminosilicate minerals and have a micro porous structure. The term was originally coined in the 18th century by a Swedish mineralogist named Axel Fredrik Cronstedt who observed,… …
85Despotiko — Δεσποτικό Geography Coordinates: 36°58′N 24°59′E / …
86astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …
87Planet Earth (TV series) — Infobox nature documentary bgcolour = show name = Planet Earth caption = Series title card picture format = 576i (SDTV) 1080i / 1080p (HDTV) audio format = Stereo (SDTV) Dolby Digital 5.1 (HD DVD and Blu ray Disc) runtime = 50 minutes creator =… …
88Cadomian Orogeny — The Cadomian Orogeny was a tectonic event or series of events in the late Neoproterozoic, about 650 550 Ma, which probably included the formation of mountains. This occurred on the margin of the Gondwana continent, involving one or more… …
89Underwater acoustics — The field of underwater acoustics is closely related to a number of other fields of acoustic study, including sonar, transduction, acoustic signal processing, acoustical oceanography, bioacoustics, and physical acoustics.HistoryUnderwater sound… …
90Whim Creek Copper Mine — The Whim Creek Copper Mine is an operating copper oxide mine, located in the Pilbara region of Western Australia. History Copper was discovered several kilometres west of the town in 1872 and gold 20 km north in 1887. Copper has been mined on and …
