Sunday Science Photos, June 19 – 25

I’m back with new photos. Enjoy!

Sea Stacks924bc494c7db41378491ff9f6038d123_7

The basalt along the Oregon coast cracked and crumbled as it cooled because, as lava, it was intruding into wet layers of sand and mudstone. As the waves break upon the shore, the chunkier blocks leave sea stacks like these at Road’s End State Park.

An Astrolabe
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Astrolabes are devices used for determining anything from local time and latitude to predicting positions of astronomical bodies. They perform the functions of an armillary sphere, but are much more portable. The one pictured is several hundred years old.

Basalt Lava Channel
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You’ve probably seen eruption images like this one. Well, the photo above is what those channels of lava can look like when they cool. This one flowed through what is now the pumice plain at Mount St. Helens.

Bleached Forest
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Volcanic smog (or vog) is not healthy for living things. Vog from Kilauea killed the canopy of this forest so that now only the bleached skeletons of the trees remain. The undergrowth is happy for the sunlight, though.

 

Samson the T-Rex
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Samson came to visit the Oregon Museum of Science and Industry some time ago. He is the third most complete T-Rex skeleton discovered.

Paulina Peak & Lake
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A shot from inside Newberry Caldera at Newberry National Volcanic Monument. The peak is a rhyolitic dome on the south caldera wall.

Clinoptilolite in Volcanic Tuff
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The volcanic glass in tuff is rather unstable and, in the presence of water, it is often replaced by clinoptilolite (a type of zeolite). It’s the zeolite mineral that give this rock its blue-green hue.

A Giant Sundial
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The Adler Planetarium features many old sundials, but this is certainly the largest. It doesn’t adjust for daylight savings time, though. … How primitive.

Ficus benghalensis
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A banyan tree in one of my two favorite places to see this species. This one is on Banyan Drive in Hilo, Hawaii. Maybe I’ll share a shot of my other favorite banyan tree some day.

Triple Falls
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One of my favorite waterfalls in the Columbia River Gorge. This is the reward at the end of a very modest hike along the edge of the Oneonta Gorge on the Oregon side of the Columbia. It is a perfect example of a segmented waterfall.

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