An Otago Geology Seminar presented by Dr Marco Brenna.
Phonolite, like music, comes in a variety of tempos. From brewing lava lakes to powerful Plinian eruptions and all the rhythms in between; from bearing mantle xenoliths to giving life to carbonatite. In this talk I will review the breadth of phonolite associations and present an experimental investigation aimed at producing phonolite from trachyte, as was observed in a pyroclastic sequence in Saudi Arabia. Experiments enabled a view of pre-eruptive magma storage conditions and reservoir processes... despite not making a phonolite.
At level 2 there will be limited seating available in the Benson common room, so the talk will also be streamed via Zoom:
|Date||Tuesday, 15 September 2020|
|Time||1:00pm - 1:55pm|
|Location||Benson Common Room (Gn9), Geology Building, Dunedin Campus, University of Otago|
|Contact Name||Marco Brenna|