A fossil used to determine the surrounding rock based on the likely time of its origin
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Tag: <span>I</span>
A fragment of other rock contained or enclosed within a host rock
A structure not vertical, usually dipping
When a substance is caused to ignite a spark or flame, through chemical or mechanical reaction
Where 2 or more lines meet or cut across each other
A substance that emits light when heated
Used to describe an area between mountains
Rock lacking porousness
An elevated are between to moving water bodies, such as rivers or creeks, which run parallel to each other
A semitransparent variety of jadeite commonly used as a Gemstone. Usually found in China