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।
coesite
Coesite is a technical term used almost exclusively in geology, mineralogy, and planetary science. It is not a word used in general conversation unless the context is a scientific discussion about high-pressure environments.
In a scientific context, coesite serves as a diagnostic marker. Because it only forms under extreme pressure, its presence in a rock sample provides empirical evidence of a high-energy event, such as a meteorite impact or deep subduction in the Earth's mantle.
It is a polymorph of silica, meaning it has the same chemical composition as quartz (SiO2) but a different crystal structure. While quartz is common, coesite is rare and unstable at surface pressures, often reverting to quartz unless trapped within other minerals.
Meanings
Examples
The presence of coesite in the sample proves the rock was subjected to extreme pressure.
I wonder if we can find any coesite crystals near the impact crater.
Coesite is a high-pressure polymorph of silica.
Look at this thin section under the microscope to see the coesite inclusions.
The geologist identified coesite as a marker for ultra-high pressure metamorphism.
We must analyze the coesite to determine the impact velocity of the meteorite.
Is it possible for coesite to remain stable during the ascent of the rock to the surface?
The discovery of coesite changed our understanding of deep crustal processes.