Monday | November 20, 2017
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Drive along Saddle Road reveals outstanding volcanic geology

| | Nov 19 2017 - 8:43pm | Comments

Route 200, the Daniel K. Inouye Highway, crosses Humuula Saddle, which separates Mauna Kea and Mauna Loa, the two largest volcanoes on Hawaii Island. This Saddle showcases outstanding volcanic geology and is easy to reach for “roadside geologists.”

  1. | Posted: Aug 24 2016 - 7:56pm

    HILO — Kilauea’s summit was rocked by earthquakes Wednesday afternoon as its churning lava lake put on a show for visitors in Hawaii Volcanoes National Park.

  2. | Posted: Aug 17 2016 - 5:05pm

    HAWAII VOLCANOES NATIONAL PARK — The journey starts deep within the Earth and ends in one spectacular collision.

  3. | Posted: Aug 15 2016 - 3:55pm

    HAWAII VOLCANOES NATIONAL PARK — The Kalapana lava flow has drawn thousands of people, some of whom risk life and limb by playing with the molten heart of the Earth.

  4. | Posted: Aug 13 2016 - 9:40pm

    At 10:02 p.m., Saturday, Aug. 6, a section of altered, thermally-stressed rock enclosing the Halemaumau Crater lava lake detached from the vent wall and plummeted into the molten lava. Tons of rocky debris impacting the lake surface triggered a violent explosion of volcanic gas, incandescent spatter (blobs of molten lava), and pieces of solid rock that sent a jet of glowing debris skyward.

  5. | Posted: Aug 7 2016 - 12:05am

    In 1902, visionary geologist Thomas Jaggar — founder of the Hawaiian Volcano Observatory — traveled to the Caribbean Island of Martinique, where he witnessed first-hand the aftermath of the deadly Mount Pelee eruption. More than 30,000 people had been killed by the eruption, and the devastation he observed contributed to Jaggar’s lifelong work to “protect life and property on the basis of sound scientific achievement.”

  6. | Posted: Jul 28 2016 - 8:57am

    KALAPANA — “How far is it?”

  7. | Posted: Jul 28 2016 - 8:54am

    The lava flow from Kilauea’s Puu Oo vent makes its way to the ocean after crossing the emergency access road. The lava flow, known as 61G, reached the ocean early Tuesday.

  8. | Posted: Jul 27 2016 - 10:41am

    HILO — Lava began spilling into the ocean early Tuesday morning, sending a plume of volcanic gas skyward while adding new land to Hawaii Island’s southeast coast as waves crashed into 2,000-degree molten rock.

  9. | Posted: Jul 24 2016 - 12:05am

    What an exciting time for Kilauea volcano-watchers!

  10. | Posted: Jul 20 2016 - 3:41pm

    The “61g” lava flow remains active on the coastal plain of Kilauea Volcano, however, it’s showing little sign of forward progress, the Hawaiian Volcano Observatory reported Wednesday.

  11. | Posted: Jul 15 2016 - 1:38pm

    The saying “Annie alga and Freddy fungus took a lichen to each other” can invoke groans or giggles from students of environmental science. This mnemonic helps us remember that a lichen is formed by two (or sometimes three) organisms from different biological kingdoms living in a mutually beneficial relationship with each other.

  12. | Posted: Jul 4 2016 - 10:05am

    Readers of Volcano Watch might recall past articles that have described various ways in which the USGS Hawaiian Volcano Observatory studies and monitors the active volcanoes of Hawaii. Today, we focus special attention on just one of those techniques: gravity.

  13. | Posted: Jul 4 2016 - 9:42am

    HILO — Cascading rivers of molten rock are attracting hundreds of awed spectators to Kalapana for a close look at a force that continues to shape Hawaii Island.

  14. | Posted: Jun 29 2016 - 10:01am

    KALAPANA — Smoke from burning trees and open channels of lava could easily be seen Tuesday from Kalapana as the lava flow from Kilauea’s Pu‘u ‘O‘o vent traveled down Pulama pali.

  15. | Posted: Jun 28 2016 - 9:37am

    The latest lava flow from Kilauea’s Puu Oo vent has begun to peek over the pali, providing curious onlookers an early glimpse of its glow from Kalapana.