火山玻璃

Obsidian is natural glass formed by volcanic lava that cooled too quickly.

黑曜石是天然形成的火山玻璃熔岩的冷却太快。

He pulls a pocketknife and levers the rock free.

他掏出把折刀，把火山玻璃撬起。

The distribution pattern also indicate radiolarian concentrations are strongly affected by the sediment type, radiolarian abundance and diversity is higher in the clay or mud than in fine sand, silt or coarse sand and decrease with the increase of terrigenous material. There is direct correlation between the radiolarian preservation and the amount of volcanic glass, the numerous volcanic ash shards have a significant influence on the radiolarian distribution pattern.

沉积物类型特别是其粒度和陆源物质的含量极大地影响着放射虫的分布，放射虫的丰度和分异度明显地随沉积物粒度的增大和陆源物质含量的增加而减小；同时，放射虫的分布也显示了与沉积物中火山玻璃含量的密切相关性。

Volcanic ash in surface sediments around Zhongsha Islands of the South China Sea mainly include three kinds of volcanogenic detritus: that is, brown volcanic glass, colorless volcanic glass and volcanic scoria.

南海中沙近海表层沉积物的轻组分(粒径为63~125μm)中主要包括有褐色火山玻璃、无色火山玻璃以及火山渣等3种火山灰类型。

This volcanic glass has an almost total absence of sizable mineral crystals within the glass matrix.

这个火山玻璃已几乎完全没有可观的矿物结晶玻璃基质。

A new type of chemical analysis has spotted the telltale signs of water molecules inside tiny beads of volcanic glass brought to Earth decades ago by the Apollo astronauts.

他们利用一种新的化学分析法，在小块火山玻璃珠里发现了水分子的明确迹象。玻璃珠是由"阿波罗"号宇航员于几十年前带回地球的。

The change of volcanic glasses in core sediment nearly is the same as that of surficial sediment, the layer number of volcanic glass is more and the contents are higher in the deep-sea basin.

菲律宾岛弧火山带、南海深海盆火山喷发以及印尼岛弧火山带是南海火山玻璃主要源区，火山玻璃搬运和沉积主要受台风、越赤道气流和环流的影响和控制。

Black obsidian is a volcanic glass created by the rapid cooling of silica-rich lava, obsidian was prized by early Maori for cutting and scraping tools and weapons and has been found at Maori occupation sites as far afield as Tiwai Pt in the south to the Kermadec islands in the north.

黑色黑曜石是火山玻璃创造的快速冷却硅，丰富的火山熔岩，黑曜石是珍贵的早期毛利人的切割和刮擦工具和武器，并已发现毛利占领地盘远在Tiwai铂南海啸群岛北部。

TAS diagram for these three kinds of volcanogenic detritus, combined with variation diagram for Al2O, FeO(superscript *), MgO, CaO, Na2O, K2O vs SiO2, shows that there may exist bimodal volcanic activity in the north margin of the South China Sea, brown volcanic glass and colorless volcanic glass represent basic end member and acidic end member respectively, and crystallization differentiation is the main process for magma evolution.

在硅碱图及Al2O3、FeO、MgO、CaO、Na2O、K2O对SiO2，的变化趋势图中可以判断，本区可能存在双峰式火山活动，褐色火山玻璃代表中一基性端元，而无色火山玻璃代表酸性端元。无色火山玻璃与褐色火山玻璃具有共同的岩浆源区，结晶分异可能是源区岩浆演化的主要方式。

Important natural geological analogues are volcanic glass and meteoric glass(anal-ogues of solidified mass), clay minerals (natural analogues of backfill material), iron meteorite and copper deposits (natural analogues of waste containers), natural nuclear reactors, uranium deposits, iron deposits containing Th and REE and contact zones between igneous rocks and other rocks (natural geochemical analogues of HLW repository).

目前已有的地质类比研究对象主要有火山玻璃，陨石玻璃，粘土矿物，铁陨石，铜矿床，铀矿床，含含Th和REE的铁矿床，天然核反应堆和火成岩接触带等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。