Geological Field Trip
Eastern Isle Royale

Geological Field Trip--Eastern Isle Royale, Michigan,  June 17-23, 2019


See the island in a geological light! No Geological background needed to enjoy this trip, but we will talk about some parts of Earth History in detail--A geological title (only for geologists!): 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.

Spectacular landscapes

Wave-washed shoreline lava exposures,

Big Lava flows,

Variety of columnar jointing features,

Mafic dolerites and pegmatites, segregation cylinders

Beautiful minerals