Physical Volcanology of Large Lava Flows

Geological Field Trip--Eastern Isle Royale, Michigan,  June 18-24, 2018


Middle Proterozoic Continental Tholeiitic Flood Basalts of the 1.1 Ba Keweenaw Rift (Rodinia)

Trip Leaders: Bill Rose, Erika Vye

Geologic Features:

Keweenaw Geoheritage

IRField trip log  Hard copy 

Keweenaw one day Guide

Magma Oceans---Very large lava flows, (volumes > 1000 km3 and with millennia-long solidification times)

Tilted sequence of multiple mafic lavas ponded in the Midcontinent rift valley with many preserved solidification features.

Wave-washed shoreline basalt exposures,

Ophitic textural complexity,

Variety of columnar jointing features,

Mafic dolerites and pegmatites, segregation cylinders

Amygdaloidal zeolite facies minerals

Spectacular landscapes

NOTICE!  This trip is completely filled.  We are hoping that dates for a second identical trip will be announced soon!!