Welcome to the glossary at GeologyRocks. We've put together some of the common terms used in the Earth Sciences to help you if you come across a term you've never seen before. To navigate, click a leeter or a category from the list on the left to see all the words starting with that letter or in that category. Alternatively, you can search for a word using the search box to the left. If you search for a word that isn't in our database, we will try and put in a definition as soon as we can.
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Formed from the settling of crystals within a magma chamber, may be layered if dense minerals are allowed to sink preferentially.
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