basaltic rocks

basaltic rocks的基本解释

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玄武岩类

与basaltic rocks相关的网络例句 [注：此内容来源于网络，仅供参考]

For a wide variety of lithologies from granite through gneiss, carbonate and amphibolite to basaltic rocks, it is shown that this relation is valid in the range 0～350 API and 0.03～7μW/m3 respectively with an error lower than 10%.

从片麻岩、碳酸盐岩、角闪岩、花岗岩到玄武岩，在这样宽的岩性变化范围内，显示出这种线性关系在0～350 API和0.03～7 μW/m3范围是有效的，其误差均小于10％。

The Tertiary basaltic rocks are discontiously distributed from the west to the northeast of Sudan, in the Sahara Desert, overlying the Cretaceous clastic rocks. The authors of this paper found a kind of columnar jointing in the Cretaceous clastic rocks in the Mellit area, western Sudan.

笔者在苏丹西部Mellit地区白垩系碎屑岩中发现一种罕见的柱状节理，经研究认为是沉积岩层受到中新世喷发的玄武岩熔岩流的烘烤而失水收缩形成的。

The SiO2 content of the dike swarms varies from 50.22% to 61.10% and they are basic-intermediate rock series, mainly basic. The Al2O3 content is generally higher than 15% and they are high aluminum basaltic rocks. The lower magnesium index (Mg#=42.77~62.28) and TiO2 content (0.97~2.41%) illuminate that they suffered magnesium-iron minerals' fractional crystallization and that they did not crystallize from original basaltic magma. The values of Na2O/K2O are all above 1, indicating lower K character. Chemically discriminated, these dike swarms are sub-alkaline rock series.

岩墙群的SiO2含量为50.22~61.10%，属于基性和中基性岩类，以基性为主；它们的A12O3含量普遍高于15%，属高铝玄武岩类；具有较低的镁指数（Mg#=42.77~62.28）及TiO2含量（0.97~2.41%），说明它们经历了镁铁质矿物的结晶分异作用，也指示它们不是由原始玄武岩浆结晶；Na2O/K2O都大于1，显示出低钾的特点；岩石化学判别，岩墙群岩石属亚碱性系列。