Flood of Fire - Yellowstone National Park
Posted by: Groundspeak Premium Member Volcanoguy
N 44° 54.130 W 110° 23.526
12T E 547993 N 4972262
A history sign along Grand Loop Road about 1.6 miles south of Tower Junction in Yellowstone National Park.
Waymark Code: WMDB4H
Location: Wyoming, United States
Date Posted: 12/17/2011
Published By:Groundspeak Premium Member muddawber
Views: 5

“River canyons expose the landscape’s hidden excesses, its violent past. The orderly columns across canyon are volcanic. From vents in the Yellowstone Plateau lava welled up and flowed -- a vast flood of fire 25 feet (7.6 m) deep. As the lava cooled and contracted about 1.3 million years ago, it formed contraction cracks, producing hexagonal columns of basalt.
The rock layers are a geologic photo album. Lava flows and other dynamic events have become benign scenic features, frozen in time. Above and below the basalt lies a loose mix of gravel carried here by glacial meltwater.
A similar basalt formation can be seen from a pullout 0.5 miles south of here.”
Marker Name: Flood of Fire

Marker Type: Rural Roadside

Addtional Information:

Group Responsible for Placement: National Park Service

Web link(s) for additional information: [Web Link]

Date Dedicated: Not listed

Marker Number: Not listed

Visit Instructions:
Please post a photo of you OR your GPS at the marker location. Also if you know of any additional links not already mentioned about this bit of Wyoming history please include that in your log.
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Recent Visits/Logs:
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dzeih visited Flood of Fire - Yellowstone National Park 09/20/2019 dzeih visited it
Castor007 visited Flood of Fire - Yellowstone National Park 12/02/2016 Castor007 visited it
Volcanoguy visited Flood of Fire - Yellowstone National Park 09/29/2010 Volcanoguy visited it

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