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Tiruchirapalli
(Encyclopedia)Tiruchirapalli trĭchĭnŏˈpəlē [key], city (1991 pop. 711,862), Tamil Nadu state, SE India, on the Kaveri River. It is a district administrative center and an important educational, religious, and...Pennebaker, D. A.
(Encyclopedia)Pennebaker, D. A. (Donn Alan Pennebaker), 1925–2019, pioneering documentary filmmaker, b. Evanston, Ill. His first film, Daybreak Express (1958), is a five-minute short detailing New York's doomed T...Rock Creek Park
(Encyclopedia)Rock Creek Park: see National Parks and Monuments (table)national parks and monuments (table). ...Steep Rock Lake
(Encyclopedia)Steep Rock Lake, 4 mi (6.4 km) long and 3 mi (4.8 km) wide, SW Ont., Canada, W of Lac des Mille Lacs. It is the site of important iron ore mining. Part of the lake was drained to facilitate the mining...quartzite
(Encyclopedia)quartzite, usually metamorphic rock composed of firmly cemented quartz grains. Most often it is white, light gray, yellowish, or light brown, but is sometimes colored blue, green, purple, or black by ...concretion
(Encyclopedia)concretion, mass or nodule of mineral matter, usually oval or nearly spherical in shape, and occurring in sedimentary rock. It is formed by the accumulation of mineral matter in the pore spaces of the...talus
(Encyclopedia)talus tāˈləs [key], deposit of rock fragments detached from cliffs or mountain slopes by weathering and piled up at their bases. A talus is a common geologic feature in regions of high cliffs. The ...Cashel
(Encyclopedia)Cashel kăˈshəl [key] [Irish,=castle], town, Co. Tipperary, S central Republic of Ireland. ...spring, in geology
(Encyclopedia)spring, in geology, natural flow of water from the ground or from rocks, representing an outlet for the water that has accumulated in permeable rock strata underground. Some of the water that falls as...well
(Encyclopedia)well, aperture in the earth's surface through which substances in a natural underground reservoir, such as water, gas, oil, salt, and sulfur, can flow or be pumped to the surface. In the United States...Browse by Subject
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