What is a rock in geology ?

Rock : definition

A rock is an earthly constituent material, formed by the assembly of minerals and presenting a certain number of characteristics of homogeneity, resistance, hardness, and composition, etc...

The classification of rocks is complex. They are divided into three main groups : magmatic (formed by the crystallization of a magma), metamorphic (due to recrystallizations and mineral neoformations (following an increase in pressure and temperature), and sedimentary (resulting from accumulation of fragments or precipitation of dissolved salts from solutions).

ReCaptcha

This service is used to secure web forms of our website and required if you want to contact us. By accepting it you agree to Google's privacy policy: https://policies.google.com/privacy

Google Analytics

Google Analytics is a service used on our website that tracks, reports traffic and measures how users interact with our website content in order for us to improve it and provide better services.

Facebook

Our website allows you to like or share its content on Facebook social network. By activating and using it you agree to Facebook's privacy policy: https://www.facebook.com/policy/cookies/

YouTube

Integrated videos provided by YouTube are used on our website. By accepting to watch them you agree to Google's privacy policy: https://policies.google.com/privacy

Twitter

Integrated tweets and share services of Twitter are used on our website. By accepting and using these you agree to Twitter's privacy policy: https://help.twitter.com/en/rules-and-policies/twitter-cookies

PInterest

Our website allows you to share its content on PInterest social network. By activating and using it you agree to PInterest's privacy policy: https://policy.pinterest.com/en/privacy-policy/