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Franklin, Aretha

(Encyclopedia)Franklin, Aretha, 1942–2018, American singer and pianist, b. Memphis. The daughter of the well-known minister C. L. Franklin, she began singing in the choir of his Detroit Baptist church, where she ...

taconite

(Encyclopedia)taconite, low-grade iron ore, a flintlike rock usually containing less than 30% iron. Resistant to drilling and to the extraction of its contained metal, the rock was long considered worthless. Experi...

music video

(Encyclopedia)music video, videotaped performance of a recorded popular song, usually accompanied by dance or a fragmentary story and sometimes employing concert footage. Typically three to five minutes long, music...

metamorphic rocks

(Encyclopedia)metamorphic rocks: see rock.

Garden of the Gods

(Encyclopedia)Garden of the Gods, park, 770 acres (312 hectares), central Colo., near Colorado Springs; noted for its unusual, multicolored rock formations. Narrow-crested sandstone hills and ridges have been erode...

slate

(Encyclopedia)slate, fine-grained rock formed when sedimentary rocks such as shale are metamorphosed by great pressure. Slate splits into perfectly cleaved, broad thin layers; this characteristically regular and pl...

mesa, in geology

(Encyclopedia)mesa māˈsə [key] [Span.,=table], name given in the SW United States to a small, isolated tableland or a flat-topped hill. Two or more of the sides are steep and usually perpendicular and some have ...

batholith

(Encyclopedia)batholith, enormous mass of intrusive igneous rock, that is, rock made of once-molten material that has solidified below the earth's surface (see rock). Batholiths usually are granitic (see granite) i...

Hittite art and architecture

(Encyclopedia)Hittite art and architecture, works of art and structures created by the ancient Hittites The principal architectural remnant of the Hittite civilization is at Boğazköy, where temple structures ...

boulder, in geology

(Encyclopedia)boulder, large rock fragment formed by detachment from its parent consolidated rock by weathering and erosion. In engineering and geology, especially in the United States, the term is applied to loose...