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OKI ISLANDS UNESCO
GLOBAL GEOPARK

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  3. Mantle Xenoliths, Kuroshima Island

Mantle Xenoliths, Kuroshima Island

Geohistory - Rocks from Volcanic Islands Period

Geosites / Okinoshima Town

The small island you can see offshore is called Kuroshima Island. It is the remains of a volcanic crater that erupted around 3.5 million years ago. The whole island contains systematic, vertical cracks called columnar joints. Mantle xenoliths are also found here.

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See More Rocks from Volcanic Islands Period

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    Along the road, where a line of …

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    This plateau in the Misaki area of …

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  • Scoria Cone, Akiya Coast

    The red rock that composes this cli…

    Geohistory - Rocks from Volcanic Islands Period
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  • Natural Spring, Mt. Kinkōji

    There is a natural spring located a…

    Geohistory - Rocks from Volcanic Islands Period
    Geosites / Okinoshima Town
Search Other Geopark Sites and Treasures
  • About Oki Islands UNESCO Global Geopark

    • About Oki Islands UNESCO Global Geopark
    • Geohistory
    • Unique Ecosystem
    • Lifestyles and Traditions
  • Geopark Sites and Treasures

    • Explore Geopark Sites and Treasures
    • List of Geopark Sites and Treasures
    • Search on the Geological Map
  • For Schools and Community

    • Education Programs
    • Regional Activities

    For Researchers

    • For Researchers
  • About Oki Islands Geopark Management Bureau

    • About Us
    • About Geoparks

    Oki Islands Geopark Museum

    • Oki Islands Geopark Museum
  • News
  • Activity Reports
  • Pamphlets
  • Video Library
  • Logo and Patronage
Links About This Website

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