accretionary lapilli

A comprehensive summary was made to concern with the regional geological outline, the basic geological characteristics and the distribution characteristcs of 12 orebodies occurring in radiated or concentric annular form, ore mineralogy characteristcs, ore enrichment regularities, ore controlling factors and prospecting indicators of Dianfang volcanic breccia.

从店房火山角砾岩体区域地质概况、基本地质特征及与其相伴的呈辐射状或同心环状分布的12条矿(化)体分布特点、矿床地质特征、矿化富集规律、控矿要素与找矿标志等方面作出了较全面的总结,明确提出金矿床受火山角砾岩体或与其相伴的断裂复合控制,指出了找矿方向。

Jiuduigou Au deposit is controled by volcanic breccia body and compressional faults.

　九对沟金矿床受火山角砾岩体及张扭性断裂带控制;成矿元素在角砾岩体中富集;水系沉积物异常显示出矿致异常的特征;共圈定了土壤地球化学单元素异常46处,其中具有找矿意义的组合异常5个;发现的3处微电异常中有两处与化探异常、矿化体叠合性良好。

A small, solidified fragment of lava.

火山砾熔岩中凝固了的小碎片

THE HISTORY OF CRYSTALLIZATION AND EVOLUTION OF LABRADOR MEGACRYST LAPILLI FROM TOLBACHIK VOLCANO,USSR

苏联托勒巴契克火山拉长石巨晶火山砾的结晶演化历史

Favorable reservoirs may be composed of sandstones, conglomerates basement metamorphic buried hills, and volcanic rocks.

砂岩、砾岩、基底变质岩潜山，火山岩均可形成良好储层。

A rock composed of compacted volcanic ash varying in size from fine sand to coarse gravel.

凝灰岩致密火山灰构成的岩石，大小以细粒至粗砾石不等

The tools are known as cobbles, lumps of volcanic basalt split by hitting them with another rock, leaving sharp cutting edges.

这些名为砾石的石器，是用另一块石头从火山玄武岩上敲下来的，具有锋利的刃。

Uplift of Lüliang Mountains and Evolution of Huanghe River-Evidence from Gravel Beds in Piedmont

从山前砾石看黄河形成与吕梁山隆升

MORPHOLOGY AND LONODSCAPE RESOURCES ASSESSMENT OF THE CONGLOMERATE KARST IN LUSHAN COUNTY;

芦山县砾岩岩溶形态及景观资源评价

The Designing and Construction of Garden Rockery Made of Pulverized Coal Ash and Ceramic Content-vacant Blocks;

粉煤灰陶砾空心砖假山的设计与施工

DISCUSSION ON GEOLOGICAL AGE OF KONGTONGSHAN CONGLOMERATE IN PINGLIANG CITY,GANSU PROVINCE

甘肃平凉“崆峒山砾岩”地层时代的商榷

STUDY OF GLACIOFLUVIAL DEPOSIT GENESIS OF CONGLOMERATE OF HONGLISHAN FORMATION OF PALAEOGENE-EOCENE SERIES IN XIAZIJIE REGION,XINJIANG

新疆夏子街—带古—始新统红砾山组砾岩冰水沉积成因的探讨

vulcanicity (vulcanism)

火山作用,火山活动

The volcano is extinct.

这座火山是座死火山。

The scientific study of volcanoes and volcanic phenomena.

火山学火山和火山现象的科学研究

relating to or produced by or consisting of volcanoes.

关于火山，由火山制造出，或由火山组成。

Research on the Engineering Geological Properties of Moraine/Outwash Rocks on the West Side of the Yulong Mountains

玉龙雪山西麓冰碛(水)砾岩的工程地质特性研究

Study on great gravel on mountaintop,gully,channel,slope,beach,cape and foot of mountain Laoshan

崂山顶、涧、沟、坡、麓、滩、岬一带巨砾成因研究

Study on the Mechanism of Reseeding on the Sandy-Gravel Desert Grassland in the Northern Slope of Tianshan Mountain;

天山北坡砾沙质荒漠草地补播改良机理的研究

PRELIMINARY STUDY ON THE ERRATIC EXPOSURE AGES OF GROVE MOUNTAINS,EAST ANTARCTICA

东南极格罗夫山萨哈罗夫岭漂砾暴露年龄初探