4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4
From: "Stephan Kolzenburg, Dr" <stephan.kolzenburg@xxxxxxxxx>
4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4
Dear Colleagues and Friends,
We would like to invite you to join a field trip we are organizing to the
intrusive complexes and volcanics of coastal Maine.
The trip will take place from the* 18th to the 23rd of July 2019*,
immediately following the IUGG general assembly 2019.
If you have any questions regarding the trip please do not hesitate to
contact me at: stephan.kolzenburg@xxxxxxxxx
*The belly of the beast: Exploring large magmatic systems from their roots
to the surface in the intrusive complexes and volcanics of coastal Maine*
This trip will introduce participants to the famed intrusive complex of Mt
Desert Island, the associated bimodal volcanic succession on Cranberry
Island as well as the Pleasant Bay intrusion, located in NE Maine, USA.
These localities preserve evidence for a range of highly dynamic magmatic,
sub-volcanic and volcanic processes. Highlights range from deep seated
intramagmatic pillows and flows, diapirism, composite dikes and partial
hybridization that record intimate physical, thermal and chemical
interactions between mafic and felsic magmas to a remarkable and unique
subvolcanic shatter zone that documents the interaction between fragmenting
magma and country rock and records shallow level magma ascent during a
caldera-forming eruption all the way to the surface expression, a bimodal
volcanic succession, comprising rhyolitic ignimbrites, rhyolitic and
basaltic lava flows and phreatic deposits.
This field trip is aimed at stimulating trans-disciplinary
discussion on a range of magmatic and volcanic processes. We invite
participants to present their current research related to the chemical and
physical development of magmatic and volcanic phenomena in informal
discussion groups in the evenings.
*Logistics:*
This six day trip will depart from Montreal in the morning of the 18th of
July and will first travel to Mt Desert Island, arriving in the afternoon
on that day. We will spend two full days (19th and 20th of July) on Mt
Desert Island and will focus on the Cadillac Mountain intrusion, a
dissected caldera complex tilted towards the east. We will visit the
eastern shatter zone documenting subvolcanic fragmentation propagating into
a magma chamber during caldera collapse, as well as the western zone
documenting episodic invasion of a floored silicic magma chamber by many
pulses of basaltic magma.
Following these days we will board a boat on the 21st of July
at 9:00 am and will spend the day examining the physical volcanology of the
Cranberry Island series and its implications for the relationship between
the volcanic series and the Cadillac Mountain intrusive complex. The
outcropping volcanic succession was rotated nearly 90Ì? from its
depositional orientation, making it possible to walk from the bottom to the
top of the succession in essentially 100% exposed outcrops on Great
Cranberry Island. The succession includes outstanding rhyolitic ignimbrites
and flow-banded rhyolites, basaltic lava flows and phreatic deposits, and
an andesitic ignimbrite that preserves evidence for an origin by mechanical
hybridization of rhyolitic ash and dismembered basaltic enclaves.
Finally, we will spend one day (22nd of July) on the Pleasant
Bay intrusion, which provides outstanding outcrops displaying the 3D
architecture of liquid-liquid interactions of mafic sheets and resident
silicic mush and melt, all happening at the base of a silicic magma
chamber. We will return to Montreal on the evening of the 23rd of July.
There will be walks up to two kilometers over moderate terrain
and along the coastline. Weather conditions could range from hot to cold
and rainy. Participants are required to ensure valid travel documents for
entering the USA from Canada.
*Trip leaders:*
Bob Wiebe, UC Davis
Sheila Seaman, UMass Amherst
John Stix, McGill University
Shane Rooyakkers, McGill University
Stephan Kolzenburg, LMU Munich / McGill University
==============================================================
Volcano Listserv is a collaborative venture among Arizona State University (ASU), Portland State University (PSU), the Global Volcanism Program (GVP) of the Smithsonian Institution's National Museum of Natural History, and the International Association for Volcanology and Chemistry of the Earth's Interior (IAVCEI).
ASU - http://www.asu.edu/
PSU - http://pdx.edu/
GVP - http://www.volcano.si.edu/
IAVCEI - http://www.iavcei.org/
To unsubscribe from the volcano list, send the message:
signoff volcano
to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxx.
To contribute to the volcano list, send your message to:
volcano@xxxxxxx. Please do not send attachments.
==============================================================
------------------------------
