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
A form of the same element containing a different number of neutrons in its nucleus, giving that element characteristic properties and atomic weight
A change of state occurring at a fixed temperature
Folding sufficient to bring the limbs in parallel
Radiation that ionizes matter, rather than passing through it or reflecting from it
An exchange of ions between two electrolytes or, between an electrolytic solution and another complex, a process used in the aqueous separation of minerals
Electrically charged particles missing one or more electrons than an atom