火山岩

Lianhuashan porphyry-type W-Au deposit, located in Chenghai County, Guangdong Province, is formed in the endo-and exo-contact of quartz syenite porphyry and quartz diorite porphyry.

广东省澄海县莲花山斑岩型钨-金矿床产于由石英正长斑岩和石英闪长玢岩组成的次火山岩的内外接触带中。

During exploration of iron deposits some metallogenic models are established such as synclinal ore-control model and diagonal occurrence model corresponding to iron deposits of sedimentary-metamorphic type;'Hanxing type' model and rol...

在勘查过程中，通过不断地研究和总结，对沉积变质型铁矿提出了向斜控矿模式及斜磁化模型；对接触交代型铁矿提出了"邯邢式"模式和低缓磁异常模型，以及"大冶式"模式和次级磁异常模型；对与陆相火山岩有关的铁矿提出了"玢岩型"模式及磁异常模型。

It is the special character of thermoluminescence of the measured object that makes the research and application of thermoluminescence full of bends.

然而 ，由于测年对象释光的特殊性质，使得TL测年技术在火山岩的研究和应用中充满了曲折。

Based on reading documents, the common principle of volcanic rocks thermoluminescence

与热释光测年有关的火山岩在广义上应包括火山熔岩、火山喷发物及与火山喷发有关的烘烤层。

The SiO2 saturability of volcanic rocks of Xishanbulake Formation and Shuiquan Formation is lower than that of tholeiite of Zhamoketi Formation.

西山布拉克组和水泉组火山岩的SiO2饱和度低於扎摩克提组拉斑玄武岩。

The feature of earth chemistry of volcanic rock in Xiangshan Group reflects that it belongs to the series of oceanic tholeiite in oceanic spreading tectonic environment.

结果 香山群的时代划归为中晚寒武世较合适；香山群主体是一套由板岩、细、粉砂岩和砂岩组成的浊积岩系，其砂岩类型主要是长石石英砂岩、细粒石英砂岩和粉砂质石英砂岩，前寒武纪变沉积岩和花岗片麻岩为主要碎屑来源和物源区组成；砂岩的岩石地球化学特征指示香山群属发育在被动大陆边缘斜坡环境中的沉积物，火山岩岩石地球化学特征反映其应属大洋扩张构造环境下的大洋拉斑玄武岩系列。

By contrast, the Jilinbaolige lead - zinc - silver ore deposit was hydrothermal deposit which related to Indosinian intermediate-acidic magmatism. Tuff which was one of host rock of the deposit was intermediate volcanic rocks belong to potassium and aluminium rich tholeiite series.

相比之下，吉林宝力格铅—锌—银矿床的容矿围岩之一的凝灰岩属富钾和铝、拉班玄武岩系列的中性火山岩。

On the basis of their major and trace element geochemistry of these four Fms., the Beitashan and Yundukala Fms. include tholeiite and calc-alkaline series, characterized by the enrichment of large ion lithophile elements, and the high field strength element contents close to MORB, which suggest that they formed an arc-island setting.

对这4个组火山岩的主要元素、微量元素地球化学特征研究表明，北塔山组和蕴都喀拉组为拉斑和钙碱性系列，并且均具有大离子亲石元素富集，而高场强元素与MORB相当，说明其为岛弧环境。

Metabasic volcanic rocks are a transitional type between island-arc tholeiite and mid-oceanic tholeiite.

而变质基性火山岩属于岛弧拉斑玄武岩与大洋拉斑玄武岩的过渡类型，它们形成于拉张盆地。

Of them, we proposed the term of the Toyon volcanogroup in the first time. All the volcanoes can be subdivided into two types: central-eruption-typeand flood-basalt-type, building a series of volcanic mechanism, including calderas, volcanicnecks and cone sheets.

托云火山岩是由多个近于同时喷发的火山口的喷出物复杂堆积的产物，这些火山口可以划分成中心式火山和溢流玄武岩两种类型，它们共同组成了托云火山群。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。