dacite

The discovery of adakitic dacite in Early Palaeozoic island arc volcanic rocks on the northern margin of Qaidam basin and its geological significance;

柴北缘早古生代岛弧火山岩中埃达克质英安岩的发现及其地质意义

Chemical weathering for dacite in Pingxiang, Guangxi;

广西凭祥英安岩的化学风化作用研究

Spherulitic Dacite──A Natural Rock Used as Ceramic Opacifier;

球粒状英安岩──一种作为陶瓷釉用原料的天然岩石

Located in the western part of North Qilian Mountains and composed of 12 small intrusions,Chelugou dacite porphyry shows petrochemically to be calialkelinic series.

车路沟英安斑岩产于北祁连山西段,由大小不同的12个斑岩岩体组成,属于钙碱性系列岩石。

Zircons from the metamorphic dacite of the Wudaogou Group in Yanbian area have euhedral-subhedral shapes and high Th/U ratios(0.

延边地区五道沟群变质英安岩中的锆石呈自形-半自形晶,具有较高的Th/U比值(0。

Based on the geologic occurrence,petrologic and isotopic age characteristics,authors of this article have identified 2 suites of dacite at Xiangshan uranium ore?field,and recognized that rhyolite?dacite is of volcanic effusion phase,but rhyolite?dacite porphyry belongs to hypabyssal intrusive phase.

本文从地质产状、岩石学和同位素年龄等特征出发 ,对相山铀矿田的两套英安岩进行了厘定 ,指出流纹英安岩为溢出相岩石 ,而流纹英安斑岩为浅成侵入相岩石 ,两者系不同时期形成的产物。

The Research on the Effect of Dacite Moisture Sensitivity to the Optimum Bitumen-aggregate Ratio of Asphalt Mixture;

英安岩吸水率对沥青混合料最佳油石比影响的研究

The petrology of ultrahigh-pressure eclogite-facies rocks in the proximity of Shima, Taihu County, Anhui Province, China;

安徽太湖县石马超高压榴辉岩相岩石的岩石学研究(英文)

Andean adakites: three ways to make them

安第斯埃达克岩 :三种成因模式(英文)

SHRIMP Zicon U-Pb Dating and Its Geological Implication for the Xiangshan Porphyric Dacite-Rhyolitic

相山流纹英安斑岩锆石SHRIMP U-Pb年龄及地质意义

They settle to the bottom of the chamber, leaving the remaining magma enriched in silica and aluminum- from which dacites emerge.

它们沉到岩浆库的底部，因此，剩馀的岩浆富含矽和铝，石英安山岩即从中生成。

The lithology of B petrofabric is schist interlated with marble, quartzite.

B岩组的岩性主要是各种片岩夹有大理岩、英岩。

THE THERMOBAROGEOCHEMISTRY OF DACITIC LAVA OF SAINTE-LUCIE ISLAND FROM THE CARIBBEAN SEA

加勒比海圣卢西亚岛英安质熔岩的温压地球化学

PETROGRAPHIC DESCRIPTION AND OXIDATION RESEARCH OF IMPOUNDED COAL FINES IN SOUTHERN INDIANA,USA

美国印地安那南部积贮煤泥的岩石学描述与氧化作用研究(英文)

The pyroclastic rock fragments comprise quartzite, schist, gneiss, basalt, andesite, rhyolite and quartz.

火成岩的碎块成分主要为石英岩、岩、麻岩、武岩、山岩和流纹岩.

The rock assemblages of the Bayinbuluke formation are mainly alkaline basalt-thick andesite-alkaline rhyolite.

火山岩岩石组合以碱性玄武岩-粗安岩-碱性流纹岩为主.

The main kinds of rocks include carbonate rocks, tuffite, siliceous rocks and quartz sand-stone.

主要岩石类型包括碳酸盐岩、沈积凝灰岩、矽质岩和石英砂岩。

The cardium sandstone is lithic, being composed of grains of chert, quartz, quartzite, silicified argillite, and other rock fragments.

卡迪砂岩是岩屑砂岩，由燧石，石英、石英岩、硅化泥板岩和其它岩石碎屑颗粒所组成。

The volcanics are most commonly andesitic in composition.

火山岩的组成最通常是安山岩。

This is a cliff composed of quartz sandstone that is well bedded.

由石英砂岩构成的悬崖，岩石层理发育。

Quartztes and rock salt have the highest conductivities.

石英岩和岩盐的热导率最高。

The foundations repose upon rock.

基座安设在岩石上。

"Sub-Bureau of Public Security of Huangyan District, Taizhou Municipality"

台州市公安局黄岩分局

mayflower | arbutus | trailing arbutus

五月花[(英)山楂，(美)岩梨