Introduction (Basic References, Philosophy)

Rift Lecture (Oral presentation about the rift--80 minutes)

Broad Background (Some geo background with web links)

Specific Background pages:

    Basalt (the mother liquor of the planets)

    Paleomagnetism (great tool to see geologic history)

    Basalt types (field hand specimen petrology)

    Geochemistry (esoteric? geochemistry)

    Lava Flow structure (Physical Volcanology of large lava flows)

    Moving Lava flows (Pahoehoe in action)

    Columnar Joints (entablature, colonade)

    Column examples from Isle Royale.

    Mafic Volcaniclastic Deposits (pyroclastic rocks of the rift)

    Isle Royale Lava Stratigraphy (nomenclature of flows)

    Ophitic texture (understanding an unusual igneous texture)

    Pegmatite (in situ differentiation of thick lava flows--also pegmatoid, dolerite)

    Amygdaloid (lava flow tops with bubble holes filled with colored minerals)

    Copper (Why native copper here?)

    Conglomerate (alluvial fan and fluvial sediments)

    LIDAR (new 2 m resolution LIDAR topography data)

Specific field areas we will visit:

    Washington Harbor (Windigo, Grace Island)

    NWCoast (Hugginin Cove, Wendigo)

    McCargoe Cove (Minong Mine)

    Amygdaloid Island (Amygdaloid channel, Belle Isle, MVD)

    Blake Point (Upper and lower ophite, pegmatite)

    Passage Island

    Snug Harbor

    Scoville Point (entablature jointing)

    Lookout Louise (Monument Rock)

    Red Rock Point

    Raspberry Island (Segregation cylinders, vesicle cylinders, pegmatites)

    Tookers and Davidson (Lava flow features, columnar Joints)

    Mott Island (Conglomerate)

    Lighthouse (Amygdaloidal flow top minerals)

    Ojibway

Keweenaw Peninsula (our comparative sites on the Keweenaw)

What to take Home  (why Isle Royale is geologically unique--what it is known for)

Bibliography  (where this information comes from)

Acknowledgements

Low Lake Levels