misc. placer deposits ; drift mine
据估算,仅犹他州油砂矿的储量就高达320亿桶。
An estimated 32 billion barrels of oil could potentially exist in Utah's tar sands.
这一现实已经引发了对开采利用油砂矿对气候变化的影响方面的担忧。
This fact has raised concerns about the impact of oil sands on climate change.
该铂- 金砂矿产于超基性岩体山前谷地的第四纪冲积- 洪积层中。
The studied platinum - gold placer occurs in Quaternary alluvial - diluvial a piedmont valley of ultrabasic rocks, Northwest China.
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