লক্ষ্য করুন: এই এন্ট্রির অনুবাদ বর্তমানে মান পর্যালোচনার অধীনে রয়েছে, তাই কিছু বিষয়বস্তু সাময়িকভাবে শুধুমাত্র ইংরেজিতে প্রদর্শিত হচ্ছে।
এই এন্ট্রিটি এখনও আপনার ভাষায় অনুবাদ করা হয়নি, তাই নিচে মূল লেখাটি দেখানো হচ্ছে।
mafic
This term is a technical portmanteau derived from magnesium and ferric, used almost exclusively within the fields of geology and petrology. It describes a specific chemical composition of igneous rocks that results in a dark color and high density, contrasting sharply with felsic rocks which are rich in silica and lighter in color.
In professional discourse, the term is used as a precise classifier for rock types like basalt and gabbro. It is not used in general conversation or non-scientific contexts, as it refers to a specific mineralogical ratio rather than a general description of color or texture.
Meanings
Examples
The oceanic crust is primarily composed of mafic rocks like basalt.
Look at the dark color of this sample; it is clearly mafic.
Mafic magma has a lower viscosity than felsic magma.
I wonder if this intrusion is mafic or intermediate in composition.
I wonder if this intrusion is mafic or intermediate in composition.
The geologist identified the layer as a mafic sill.
Is this rock mafic because of the high iron content?
The sample showed a distinct mafic mineral assemblage.
The sample showed a distinct mafic mineral assemblage.
Most of the mantle consists of ultramafic and mafic materials.
Most of the mantle consists of ultramafic and mafic materials.