Geology dictionary by Futura-Sciences

Alphabetical index

Accretionary prism An Accretionary prism is an accumulation of superficial ...	Acidic rock An acidic rock is an igneous rock containing more than 65 % ...
Active fault An active fault is defined as a plane or slightly oblique ...	Algal film An algal film is an organic skin formed of micro-algae.
Alkaline Alkaline refers to rocks rich in Na and/or K ions, which are ...	Allanite Allanite is a variety of epidote containing rare earths.
Allochemical Allochemical metamorphism is metamorphism in which some ...	Alluvial deposit An alluvial deposit is a dentritic sedimentary deposit ...
Alum Alum is hydrated aluminium and potassium sulphate, it is ...	Aluminium silicates Aluminium silicates are generally associated with ...
Amorphous Amorphous describes an uncrystallised mineral, i.e. ...	Amphibolite An amphibolite is a metamorphic rock which forms at very ...
Anatexy Anatexy is a process by which regional metamorphic rocks ...	Anorthosite Anorthosite is plutonic hololecratic igneous rock with a ...
Antigorite Antigorite is a silicate rich in magnesium derived from ...	Aquifer An Aquifer is a geological formation containing, temporarily ...
Aragonite Aragonite is a mineral material which forms concretions. The ...	Archean The Archean is the second geological eon of the Precambrian ...
Argilite Argilite is a dendritic sedimentary rock composed of ...	Artesian well The artesian well, discovered in the 12th century in Artois, ...