1·It was generally accepted that volcanic rocks with such high levels of magnesium could not exist.
人们普遍认为，具有如此高镁含量的火山岩是不可能存在的。
2·They built thousands of circular stone windbreaks and gardened inside them, and used broken volcanic rocks to keep the soil moist.
他们建造了成千上万的圆形石质防风林并在其中种植花草，还用破碎的火山岩来保持土壤湿润。
3·First identified in 1969, komatiites are Earth's oldest known volcanic rocks and contain three times as much magnesium as do most volcanic rocks.
科马提岩于1969年首次被发现，它是地球上已知的最古老的火山岩，含镁量是大多数火山岩的三倍。
4·Volcanic rock reservoir involves basic and acidic volcanic rocks.
火山岩储集层有基性火山岩也有酸性火山岩。
5·Volcanic rocks have high susceptibilities under normal conditions.
火山岩在正常情况下有强的磁化率。
6·Subduction Record Earlier than arc volcanic rocks in the Sangri Group?
存在比桑日群弧火山岩更早的新特提斯洋俯冲记录么?。
7·Today his land is a pile of jagged volcanic rocks. "We know the mountain will erupt again.
直到今天，他管理的这片城区上还是堆满了犬牙交错的火山岩石。
8·Subsequent lava flows deposited volcanic rocks up to 20 meters (65 feet) thick in some places.
而熔岩沉积物又使一些地方火山岩岩层厚达20米(65英尺)。
9·Therefore the volcanic rocks in Chahe and Maomihe belong to the continental arc environment.
上述特征充分说明岔河、茂密河的火山岩属大陆弧构造环境。
10·These characteristics indicate that the source of the volcanic rocks is the enriched mantle.
曲线表现为整体上隆的特征，表明其源区为富集地幔。