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攒点RP 版本一： 比较长,讲海低的盐的. 不过比较简单. 最后一段讲了海低盐的某个过程可以帮助发现海低的石油资源什么的... http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=320029&page=1
版本二： salt的一种形态—什么i还是d开头的一种东西。这东西的形成过程和其应用。 形成过程：sediment，rock之类的东西因为密度大，下沉；这salt的东西就留在表面了。 应用：寻找石油。 http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=320472&page=1 Over time, the salt is covered with sediment and becomes buried. Since the density of salt is generally less than that of surrounding material, it has a tendency to move upward toward the surface, forming large bulbous domes, diapirs , sheets, pillars and other structures as it rises. If the rising salt diapir breaches the surface, it can become a flowing salt glacier. In cross section, these large domes may be anywhere from 1 to 10 kilometers across and extend as far down as 6.5 kilometers. The rock salt that is found in salt domes is mostly impermeable. As the salt moves up towards the surface, it can penetrate and/or bend strata of existing rock with it. As these strata are penetrated, they are generally bent slightly upwards at the point of contact with the dome, and can form pockets where petroleum and natural gas can collect between impermeable strata of rock and the salt. The strata immediately above the dome that are not penetrated are pushed upward, creating a dome-like reservoir above the salt where petroleum can also gather. These oil pools can eventually be extracted, and indeed form a major source of the petroleum produced along the coast of the Gulf of Mexico. Other uses include storing oil, gas, or even hazardous waste in large caverns formed after salt mining, as well as excavating the domes themselves for uses in everything from table salt to the granular material used to prevent roadways from icing over.
[此贴子已经被作者于2008-5-11 10:21:11编辑过] | 
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发表于 2008-5-11 04:29:00
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