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loess

(Encyclopedia)loess lĕs, lōˈəs, Ger. lös [key], unstratified soil deposit of varying thickness, usually yellowish and composed of fine-grained angular mineral particles mixed with clay. It is found in many reg...

Ch'an Buddhism

(Encyclopedia)Ch'an Buddhism: see Zen Buddhism. ...

An Lu-shan

(Encyclopedia)An Lu-shan än lo͞o-shän [key], d.757, Chinese general of the T'ang dynasty. Of mixed Sogdian and Turkish birth, he was appointed regional commander on the northeastern frontier. In 755 he led c.200...

An-ch'ing

(Encyclopedia)An-ch'ing än-chĭng [key]: see Anqing, China. ...

Wang An-shih

(Encyclopedia)Wang An-shih wäng än-shûr [key], 1021–86, Chinese Sung dynasty statesman. As a chief councilor (1069–74, 1075–76) he directed sweeping administrative and fiscal reforms that drew strong conse...

Paleolithic period

(Encyclopedia)Paleolithic period pāˌlēəlĭthˈĭk, –lēō–, pălˌ– [key] or Old Stone Age, the earliest period of human development and the longest phase of mankind's history. It is approximately coexten...

Piltdown man

(Encyclopedia)Piltdown man, name given to human remains found during excavations (1908–15) at Piltdown, Sussex, England, by Charles Dawson. The find led to much speculation and argument. Since they were found wit...

youth-and-old-age

(Encyclopedia)youth-and-old-age: see zinnia.

Olduvai Gorge

(Encyclopedia)Olduvai Gorge ōlˈdəwāˌ, –vāˌ [key], a feature of the E African Rift Valley in Tanzania. Erosional processes have exposed geological strata in the gorge dating to the lower Pleistocene epoch, ...

Geologic Timescale (table)

(Encyclopedia)Geologic Timescale 1 Not an era but the time preceding the Cambrian. ...