Bowen's reaction series Flashcards
1
Q
Liquidus
A
A phase boundary showing the temperature where the last solid particle melts when heated
2
Q
Solidus
A
A phase boundary showing the temperature when a rock first begins to melt when heated
3
Q
Name the discontinuous reaction series
A
olivine pyroxene (Augite) Amphibole (Hornblende) Biotite mica K feldspar Muscovite mica Quartz
4
Q
Name the continuous reaction series
A
Ca rich plagioclase feldspar Na rich plagioclase feldspar K feldspar Muscovite mica Quartz
5
Q
Solid solution series
A
The compositional range between end member minerals
6
Q
How do zoned feldspar crystal relate to continuous reaction?
A
They form in a separate reaction to the discontinuous series
7
Q
What is the eutectic system?
A
Crystallisation occurs simultaneously in both the discontinuous and continuous series, however, the minerals in each are immiscible and form two solid phases
