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basement rockscrystalline, indurated or metamorphosed rocks that underlie the softer sedimentary or volcanic cover rocks, and which are generally older than c. 100 Ma in Zealandia
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basement rocksThe underlying or older rock mass. Often refers to rocks of Precambrian age which may be covered by younger rocks. Base metal
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basement rocksrefers to very deep, ancient rocks that underlie the continents and oceans.
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basement rocksThe underlying or older rock mass. Often refers to rocks of Precambrian age which may be covered by younger rocks. Base camp
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