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conglomerate, in geology

(Encyclopedia)conglomerate, in geology, sedimentary rock composed largely of pebbles or other rounded particles whose diameter is larger than 2 mm (.08 in.). Essentially a cemented gravel, conglomerates are formed ...

dolomite

(Encyclopedia)dolomite dōˈləmītˌ, dŏlˈə– [key]. 1 Mineral, calcium magnesium carbonate, CaMg (CO3)2. It is commonly crystalline and is white, gray, brown, or reddish in color with a vitreous to pearly lus...

Brown, James

(Encyclopedia)Brown, James, 1933–2006, African-American rhythm-and-blues singer known as the “godfather of soul,” b. Barnwell, S.C., as James Joe Brown, Jr. Abandoned by his parents, he left school in the sev...

LL Cool J

(Encyclopedia) LL Cool J , 1968- , African-American rapper and actor, b. Queens, N.Y., as James Todd Smith. Smith had a tragic upbringing, with his father shooting bo...

Beloit

(Encyclopedia)Beloit bəˈloit [key], city (2020 pop. 36,657), Rock co., S Wis., on the Rock River; inc. 18...

Sela

(Encyclopedia)Sela or Selah sēˈlə [key] [Heb.,=rock], in the Bible, unidentified town, S of the Dead Sea. Amaziah captured it and renamed it Joktheel. Some identify Sela with Petra. Sela in the first chapter of ...

blasting

(Encyclopedia)blasting, shattering, breaking, or splitting of rock or other material by the discharge of an explosive placed within or in contact with it. It is a necessary part of many engineering operations. An a...

kettle

(Encyclopedia)kettle, oval depression found in glacial moraines, which are landforms made up of rock debris. When a glacier melts and draws away from an area, a block of ice may break off and be covered by earth an...

shaft sinking

(Encyclopedia)shaft sinking, excavation from the surface of an opening in the earth. Shafts, which are generally vertical, are usually distinguished from tunnels, which are horizontal. Little difficulty is experien...

gravel

(Encyclopedia)gravel, particles of rock, i.e., stones and pebbles, usually round in form and intermediate in size between sand grains and boulders. Gravel is composed of various kinds of rock, the most common const...