Tags: large lava flows

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  1. Keweenaw Geoheritage

    05 Jun 2014 | Contributor(s):: William I Rose

    The site interprets the exposed section of the Mesoproterozoic mid-continent rift, the Keweenaw Peninsula and Isle Royale, Michigan. It includes some of Earth's most voluminous lava flows, a large thrust fault, a vast sequence of fluvial red beds and unique native copper deposits. The geology...

  2. Keweenaw Boulder Garden

    27 Apr 2011 | Contributor(s):: William I Rose

    http://www.geo.mtu.edu/~raman/SilverI/Boulder_Garden/ Boulder Gardens are selected and arranged groups of boulders, designed for an educational purpose. At Michigan Tech we selected 40 diverse and representative glacial lag boulders which represent the lithology of all of the regional surficial...

  3. Geology of the Keweenaw Rift, Upper Michigan

    27 Apr 2011 | Contributor(s):: William I Rose

    This is a one hour 15 min lecture which is aimed at the Geology of the Keweenaw Peninsula and Isle Royale, where the Portage Lake Lava Series and the Copper Harbor Conglomerate are exposed and Earth's earliest known continental flood basalts can be observed in the field. The lecture is meant to...