crossword volcanic rock – All Crossword Answers

Welcome to Crosswordanswer.co.uk! If you're stuck on the clue "crossword volcanic rock", you've come to the right place. Below you'll find a comprehensive list of potential answers, categorized by letter count, along with detailed explanations to help you understand why each answer fits the clue. Let's solve that puzzle!

Solutions for "crossword volcanic rock" by Letter Count

6 Letters

PUMICE: A lightweight, porous volcanic rock often used in abrasives or as a horticultural soil additive.

BASALT: A dark, fine-grained volcanic rock, very common and forms much of the ocean floor and large lava flows.

SCORIA: A dark, highly vesicular volcanic rock, resembling cinders, commonly found in cinder cones.

8 Letters

OBSIDIAN: A naturally occurring volcanic glass, typically black, formed by the rapid cooling of felsic lava.

ANDESITE: An intermediate volcanic rock, typically grey, common in continental volcanic arcs like the Andes mountains.

More About "crossword volcanic rock"

Volcanic rocks are a fascinating category of igneous rocks that form from magma erupting onto the Earth's surface (lava) and cooling quickly. This rapid cooling often results in fine-grained textures or even a glassy appearance, unlike the coarse-grained textures of rocks that cool slowly underground. The specific type of volcanic rock formed depends on the chemical composition of the lava and the conditions under which it cools.

Common examples include the lightweight and porous pumice, often used in beauty products or as an abrasive; basalt, a dark, dense rock that forms vast plains and oceanic crust; and obsidian, a smooth, glassy rock once prized for tools and weapons. Their unique characteristics make them popular subjects in geology and, naturally, in crossword puzzles, where their properties can be hinted at in clever ways.

Understanding these different types and their distinctive features can give you an edge when tackling related crossword clues, as the clue might hint at the rock's color, weight, texture, or even its geographical origin.

Tips For Your Next Puzzle

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Frequently Asked Questions

What is a common 6-letter volcanic rock?

PUMICE and BASALT are both common 6-letter volcanic rocks often found in crosswords. PUMICE is known for its light weight and porous nature, while BASALT is a dark, dense rock forming a significant part of the Earth's crust.

How do I identify volcanic rock clues in crosswords?

Look for terms like "lava outflow," "igneous rock," "from a volcano," "porous stone," or specific characteristics like "glassy rock." The letter count provided in the crossword will also be a key indicator, helping you narrow down possibilities like PUMICE (6 letters) or OBSIDIAN (8 letters).

Are all igneous rocks considered volcanic rocks?

No. While all volcanic rocks are indeed igneous (meaning they formed from cooled magma or lava), not all igneous rocks are volcanic. Volcanic rocks (also called extrusive igneous rocks) form on the Earth's surface from rapidly cooled lava, while plutonic rocks (intrusive igneous rocks) form beneath the surface from slowly cooled magma.