Monday, May 25, 2009
In 2006, structural anaylsts informed monument officials that the building housing the quarry, visitor's center, and offices was structurally unsound and that allowing it to remain open would mean taking an enormous risk with people's lives. Within 48 hours, the building was vacated and closed down.
Spiral fractures cutting clean through cinderblock:
The cause of this slow deterioration is a bentonitic layer beneath the foundation of the building. Bentonite is a swelling clay formed from the weathering of volcanic ash. During every rain storm, the clay swells up and pushes the rock strata above it, as it dries, it contracts. The old visitor's center here could only take so much of that pushing and pulling from beneath: forty-eight years to be exact.
It has been a source of immense frustration to tourists hoping to get inside the quarry to see the thousands of bones in high relief on the cliff face. This quarry was the reason that Dinosaur National Monument was created in the first place. Happily, the monument is receiving $13 million in stimulus funds to demolish and rebuild the Quarry building and to build a brand new, permanent visitor's center elsewhere in the monument.
Some of the treasures of the rock face:
Such immaculate preparation....wish I'd been born 50 years earlier...