The Wordsmith Dictionary

Exact matches only Allow stemming Match all embedded

English-Thai Dictionary

greensand

N หินทราย ที่ มี glauconite ที่ ทำให้ เป็น สี เขียว

Webster's 1913 Dictionary

GREENSAND

GREENSAND Green "sand ` (-s, n. (Geol.)

Defn: A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime.

Note: Greensand is often called marl, because it is a useful fertilizer. The greensand beds of the American Cretaceous belong mostly to the Upper Cretaceous.

New American Oxford Dictionary

greensand

green sand |ˈgrēnˌsand ˈɡrinsænd | ▶noun Geology a greenish kind of sandstone, often loosely consolidated.

Oxford Dictionary

greensand

green |sand |ˈgriːnsand | ▶noun [ mass noun ] Geology a greenish kind of sandstone, often loosely consolidated. • (usu. the Greensand ) a stratum largely composed of greensand, deposited during the Cretaceous period and often underlying chalk.