Learn about obsidian rock. Find out how obsidian is formed and what obsidian is made of. Gain an understanding of obsidian properties, types of...
Learn about obsidian rock. Find out how obsidian is formed and what obsidian is made of. Gain an understanding of obsidian properties, types of...
obsidian A glassy volcanic rock. Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited ThesaurusAntonymsRelated WordsSynonymsLegend: Switch tonew thesaurus Noun1. obsidian- acid or granitic glass formed by the rapid cooling of lava without crystallization...
rock 1 (rŏk) n. 1. Relatively hard, naturally formed mineral or petrified matter; stone. 2. a. A relatively small piece or fragment of such material. b. A relatively large body of such material, as a cliff or peak. 3. A naturally formed aggregate of mineral matter constituting a ...
a type of dark rock that looks like glass and comes from volcanoes Word Origin Definitions on the go Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app. See obsidian in the Oxford Advanced American Dictionary Check pronunciation:...
obsidian: A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava.
The meaning of CORE is a central and often foundational part usually distinct from the enveloping part by a difference in nature. How to use core in a sentence. Distinguishing Between Core and Corps and Corpse and Corp
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Finally, we have a glassy texture. When thelavacools down quickly, there is not enough time for the formation of large minerals. The example of this texture is obsidian. Geological Importance of Igneous Rocks Igneous and metamorphic rocks make up around 90 to 95% of the top 16 km of the...
What is an example of an igneous rock? Obsidian is an extrusive igneous rock that cooled quickly above ground. Granite is an example of an intrusive igneous rock that cooled slowly below ground. What are the three types of igneous rocks?