火山碎屑物

火山碎屑堆积物中的浮岩岩石化学分析结果表明岩浆成分为粗面质。

Petrochemistry analysis of pumice component indicates that the magma can be assigned to trachytic magma .

修改了Suzuki二维扩散模型，并对长白山天池火山喷发碎屑沉降物分布特征进行了模拟，进一步讨论了喷发柱高度和风速对沉降分布的影响。

Suzuki 2D diffusion model is modified and used to simulate the distribution characteristics of volcanic eruptive clastic sediment at Tianchi , Changbaishan . Furthermore , the influences of height of eruption column and wind velocity on the distribution of sediment are discussed .

当代火山喷发碎屑堆积物的研究进展及其主要类型

Advances in Pyroclastic Deposits at Present and the Main Types of the Pyroclastic Deposits

主要论述了这次大爆发的火山喷发碎屑堆积物的层序和分布。

The author deals with mainly the sequence and distribution of the pyroclastic deposits of the800 a.B.P.eruptions .

长白山火山历史上最大火山爆发火山碎屑物层序与分布

Sequence and Distribution of the Pyroclastic Deposits of the Greatest Eruption of Changbaishan Volcano During the Period of History

通过对研究区火山产物分析，推测未来主要火山灾害由火山喷发空降碎屑物、火山碎屑涌流、熔岩流、火山喷发气体造成。

Based on the analysis of volcanic products , it is inferred that the future probable volcanic hazards would be caused by descending pyroclasts , pyroclastic outpouring flows , lava flows and gases from volcanic eruptions .

辽西中生代义县旋回火山作用可以划分成4个亚旋回，每个亚旋回火山喷发都有不等量的火山碎屑物和熔岩形成。

The Yixian volcanic eruption cycle in the Mesozoic volcanic basin of western Liaoning can be divided into four subcycles , and there are some pyroclastic debris and lava in each eruption subcycle .