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来源：百度知道 编辑：UC知道 时间：2024/05/22 19:15:52
3.1. Pumices
Pumice is amorphous foam produced during volcanic
eruptions. It is constituted mostly of silica and alumina in
relative amounts varying according to the geological area
of origin, and also includes other chemical species, such as
different oxides and water [8]. Pumice is a volcanic rock of
which porous structure is formed by dissolved gases
precipitated during the cooling as the lava hurtles through
the air. The connectivity of the pore structure may range
from completely closed to completely open [9].
Pumice is formed during explosive volcanic eruptions
when liquid lava is got into the air as a froth containing
masses of gas bubbles. As the lava solidifies, the bubbles are
frozen into the rock. Any type of igneous rock—andesite,
basalt, dacite or rhyolite—can form pumice given suitable
eruptive conditions. When larger amounts of gas are
present, the result is a finer-grained variety of pumice<
Pumice is amorphous foam produced during volcanic
eruptions. It is constituted mostly of silica and alumina in
relative amounts varying according to the geological area
of origin, and also includes other chemical species, such as
different oxides and water [8]. Pumice is a volcanic rock of
which porous structure is formed by dissolved gases
precipitated during the cooling as the lava hurtles through
the air. The connectivity of the pore structure may range
from completely closed to completely open [9].
Pumice is formed during explosive volcanic eruptions
when liquid lava is got into the air as a froth containing
masses of gas bubbles. As the lava solidifies, the bubbles are
frozen into the rock. Any type of igneous rock—andesite,
basalt, dacite or rhyolite—can form pumice given suitable
eruptive conditions. When larger amounts of gas are
present, the result is a finer-grained variety of pumice<
3.1 。 Pumices
浮石是非晶泡沫过程中产生的火山
爆发。这是构成大部分是二氧化硅和氧化铝
相对量根据不同地区的地质
原产地，而且还包括其他化学物质，如
不同的氧化物和水[ 8 ] 。浮石是火山岩
其中多孔结构形成的溶解气体
沉淀在冷却的熔岩hurtles通过
空气中。连通的孔隙结构可能范围
从完全封闭，完全开放[ 9 ] 。
浮石是形成爆炸性火山爆发
当液态熔岩是进入空气作为一个泡沫载
群众的气泡。随着熔岩凝固的泡沫
冻结的岩石。任何类型的岩浆岩，安山岩，
玄武岩，英安岩和流纹岩，可以给予适当的形式浮石
发疹性条件。当大量的气体
目前，其结果是细晶各种浮石
被称为pumicite 。它被认为是玻璃，因为它没有
晶体结构。浮石不同密度根据
厚度的固体物质之间的气泡;许多
样品浮在水中。蜂窝结构的浮石是
所创造形成的泡沫或空气时，气体的孔洞
中所载的熔岩流从火山
陷入冷却。该细胞伸长和
平行的一个又一个，有时是相互关联的。
它们可能是小国和大尺寸[ 10 ] 。
在古和第四纪，浮石存款
厄斯帕塔和地区形成后转到¨ ¨ k火山辑控制单元
活动。辑控制单元去¨ ¨ k火山位于西南厄斯帕塔-
土耳其。厄斯帕塔的浮石是从厄斯帕塔-
卡拉卡亚地区。其明显储备约08.00亿
立方米，尽可能储备一十二点〇 〇亿立方米，总准备金
关于二十点零零亿立方米[ 10 ] 。
主要用于浮石继续作为骨料
在轻量级构件和各类建设