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oolite

(Encyclopedia)oolite ōˈəlīt, ōˈō– [key], rock composed of small concretions, usually of calcium carbonate, containing a nucleus and clearly defined concentric shells. In the British Isles oolitic limestone...

Natural Bridge

(Encyclopedia)Natural Bridge, small village, Rockbridge co., W Va., in the Shenandoah valley; founded 1774. Nearby is the famous Natural Bridge over the gorge of Cedar Creek. It is a limestone arch 215 ft (66 m) hi...

Chichibu

(Encyclopedia)Chichibu chēˈchēbo͞o [key], city, Saitama prefecture, central Japan, on the Ara River. It is a ...

Ipoh

(Encyclopedia)Ipoh ēˈpō [key], city, capital of Perak state, Malaysia, central Malay Peninsula, in the K...

Kent's Cavern

(Encyclopedia)Kent's Cavern or Kent's Hole, limestone cave, Devonshire, SW England, near Torquay. The floor is composed of several strata, with remains indicating the prehistoric coexistence there of humans and now...

Dudley

(Encyclopedia)Dudley, metropolitan borough, W central England. Dudley's famed iron, coal, and limestone industries began declining c.1870. Other industries include en...

Conneaut

(Encyclopedia)Conneaut kŏnˈēŏtˌ [key], city (2020 pop. 12,448), Ashtabula co., extreme NE Ohio, on Lake ...

Gippsland

(Encyclopedia)Gippsland gĭpsˈlănd [key], geographical area, 13,655 sq mi (35,366 sq km), Victoria, SE Australia, E of Melbourne. There are deposits of coal, oil and natural gas (offshore), and limestone. Gold wa...

Mendip Hills

(Encyclopedia)Mendip Hills, range of hills, c.25 mi (40 km) long, across N Somerset, SW England, extending SE from the vicinity of Hutton to the Frome valley. Primarily limestone, the hills have numerous caves (Woo...

Mansfield, city and district, England

(Encyclopedia)Mansfield, city (71,325) and district, Nottinghamshire, central England, on the western border of Sherwood Forest. The city lies in a coal district, with manufactures of hosiery, shoes, and metal prod...