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单词 phosphatic nodule
释义

> as lemmas

phosphatic nodule
phosphatic nodule n. Geology a fossilized nodule consisting chiefly of calcium phosphate of animal origin, occurring in certain marine deposits and formerly used as a source of fertilizer.
ΚΠ
1860 N. Amer. Rev. Apr. 485 It is thought that phosphatic nodules and bituminous matter have been discovered.
1910 J. A. Murray Soils & Manures viii. 213 Quantities of phosphatic nodules are also found in the Suffolk Crag and in various parts of the Green Sand.
1995 Philos. Trans. (Royal Soc.) B. 347 306/2 A small number of isolated sclerites, recovered from phosphatic nodules in the ‘Green Shales’.
extracted from phosphaticadj.
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