Phantom Ship
Posted by: Groundspeak Premium Member Volcanoguy
N 42° 54.844 W 122° 04.287
10T E 575790 N 4751690
Geologic history sign at the Phantom Ship Overlook.
Waymark Code: WM7MX3
Location: Oregon, United States
Date Posted: 11/10/2009
Published By:Groundspeak Premium Member TheBeanTeam
Views: 8

Marker Name: Phantom Ship
Marker Text: At first glance, the cluster of dark, jagged rocks just off-shore calls to mind the image of a ghostly ship with tall masts and drooping sails. The “Phantom Ship” is actually a remnant of an ancient volcano called the Phantom Cone.
Unlike the youthful Wizard Island made mostly of cinders erupted within the last few thousand years, the dense lavas of Phantom Ship may be more than 400,000 years old - the oldest exposed rocks in the Crater Lake caldera.
The ship consists of two overlapping andesitic lava flows, part of the layering within the Phantom Cone. The subsequent growth of Mt. Mazama - a much larger volcano - engulfed the Phantom Cone. After Mt. Mazama collapsed, Phantom Ship was exposed. It is part of a ridge that protrudes from the caldera wall. Most of the ridge is now submerged, leaving Phantom Ship stranded off shore.

Historic Topic: Geological

Group Responsible for placement: National Parks Service

Marker Type: Roadside

Region: Willamette Valley

County: Klamath

State of Oregon Historical Marker "Beaver Board": Not listed

Web link to additional information: Not listed

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Recent Visits/Logs:
Date Logged Log User Rating  
ChapterhouseInc visited Phantom Ship 07/13/2013 ChapterhouseInc visited it
bachmann_andreas visited Phantom Ship 12/12/2011 bachmann_andreas visited it
Volcanoguy visited Phantom Ship 08/26/2009 Volcanoguy visited it

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