中更新世以来的哈尔滨黄土物源变化
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Changing provenance of Harbin loess since the Middle Pleistocene: evidence from TIMA automated quantification of minerals
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图4. 哈尔滨黄土上、下部地层PCA物源判别图解 |
Fig.4. PCA provenance discrimination of the upper and lower strata in Harbin loess |
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