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单词 mussel band
释义

> as lemmas

mussel band
mussel band n. Geology a stratum in a coalfield containing fossil mussels or other bivalves.
ΚΠ
1845 J. Phillips & C. G. B. Daubeny Geol. in Encycl. Metrop. VI. 590/1 Iron-stone courses are most plentiful in the middle and lower part, where also lie the ‘muscle bands’.
1939 A. Raistrick & C. E. Marshall Nature & Origin Coal Seams ii. 33 The remains of fresh-water or marine shells are less common, forming when they occur in quantity ‘mussel bands’ and ‘marine bands’.
1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles ix. 224 The widespread recognition of the mussel bands from coalfield to coalfield..confirms that the Coal Measures were formerly continuous.
extracted from musseln.
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