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单词 reef wash
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reef wash
reef wash n. Australian Mining (now chiefly historical) a deposit of wash-dirt lying over bedrock.
ΚΠ
1869 R. B. Smyth Gold Fields Victoria Gloss. 620 Reef-wash—A deposit of washdirt spread over an expanse of flat or undulating reef (i.e., bed-rock), or lodged in a hollow in the reef.
1880 L. Fison & A. W. Howitt Kamilaroi & Kurnai 272 The great ‘reef washes’ of Ballarat are to be referred to the period of depression.
2002 Austral. Jrnl. Earth Sci. 49 870/1 Historically these deposits were differentiated as oldest gold drift and older gold drift..or reef wash and deep lead.
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