科研之友
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摘要
Pulverulite, a soft, porous, and crumbly rock, is present in the Silurian Lockport Dolomite at a quarry near Rocky Ridge, OH. The great majority of the pulverulite forms bedding-perpendicular pipes. The most common characteristic of the pulverulite, as seen using scanning electron microscopy, is a series of rounded to subrounded masses of dolomite 5-20 A mu m in diameter. The author interprets that the pulverulite resulted from the downward percolation of very acidic groundwater, that resulted from chemical reactions involving tree roots and groundwater.
- 出版日期2012-3
