火山通道

而火山通道相和侵出相呈（陡）丘状、中强振幅、低频、杂乱反射，仅分布在火山口附近，横向宽多小于2km，纵向厚约100~200m。

The characters of volcanic vent facies and invading facies are steep mound shape with middle-high amplitude , low frequency , disorder reflection , only occurred near the crater , which are 2 km wide and 100 ~ 200 m thick .

其结果表明东岭地区火石岭组在中部区域喷溢相上部亚相和火山通道相发育。

The upper subfacies of effusive facies and volcanic vent facies well developed in the middle area of Huoshiling Formation .

火山通道相主要发育节理缝和各种原生裂隙。

Joint fissures and various primary fractures are mainly developed in volcanic conduit facies .

具有气泡超压聚集和气体通过可渗透性岩浆损失的火山通道内岩浆流体的动力学

Dynamics of magma flow inside volcanic conduits with bubble overpressure buildup and gas loss through permeable magma

放射状断裂是沟通火山通道和火山周边断裂并使含矿热液从火山通道向火山周边断裂运移的重要渠道，起到配矿构造的作用。

The fractures radiating from the volcanic crater are the ore-distributing passageways , which let the ore-forming material move into the host structures and the deposit .

经过系统观察认为此处存在三类火山通道相节理：面状节理、“倒扇型”柱状节理和“直立型”柱状节理。

By observing the joints , three kinds of joints were distinguished : planar joints ," reverse fan-type " columnar joints and " orthotropus-type " columnar joints .

4火山通道中充填的火成岩可以形成有效的裂缝系统而成为气体从岩浆房上移的通道。

Fissure systems can be developed in igneous rock of volcanic conduit , so it can become the channel for moving up of CO_ ( 2 ) gas .

从这时候开始，小规模的地震和山体的膨胀说明莫纳罗亚火山的通道系统再一次开始活动。

Since then , small earthquakes and swelling of the mountain indicate that Mauna Loa 's plumbing system is again active .

山东昌乐地区死火山群火山通道相节理非常发育，形态独特，引人注目。

There are many noticeable and well-developed joints in the volcanic crater group in the Changle area , and they are unique in shape .

官方表示，禁止飞机通过火山周围的通道，因为火山观测站的飞行通告发布了最高级别红色预警。

Officials say planes are banned from passing the pathway around the volcano as a volcano observatory notice for aviation has been put in place with red code , the highest level of alert .

岛弧为大型背形结构，雅满苏断裂带为火山喷发的主要通道，弧前盆地生成于弧沟间隙部位。

The island arc has a large antiform structure , the Yamansu fault belt is a main conduit for volcanic eruption , and the forearc basin was formed in an arc-trench gap .

利用三维AVO分析技术还发现了深层火山岩，初步确定了火山岩喷发的通道位置。

The deep volcanite is discovered by 3D AVO techniques and the channel position of volcanic eruption is preliminarily determined .

火山活动特征是从爆发转向喷溢，最后以侵出形式挤出火山通道。

The volcanic activities occurred from explosion , through eruption to extrusion at last .