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Te Pito Te Henua, Or Easter Island

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Author Topic: Te Pito Te Henua, Or Easter Island  (Read 4385 times)
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Jennifer Murdoch
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« Reply #15 on: February 27, 2010, 12:51:54 pm »

to volcanic cinder, having the lightness and qualities of coke. In some of the varieties the cavities are filled with olivine crystals partly decomposed, but generally the cavities are empty. This lava when mixed with feldspar is sometimes of gray color; not unfrequently several tints of red may be seen, though the most common is a dark, lusterless brown.

The tufaceous lavas are extremely interesting, because they form the most prominent feature in the physiognomy of the island. To this geological structure, with the incessant action of the trade-winds and heavy rains, is due the fact that the island is surrounded by precipitous cliffs, rising in some cases to a thousand feet in height. The formation is
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