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Petrified logs, Petrified Forest Nat'l Park, Northern Arizona.
Lens: DFA 28-105 mm Camera: Pentax K1 Photo Location: Along I-40, Arizona ISO: 125 Shutter Speed: 1/80s Aperture: F16 
Posted By: RICHARD L., 05-13-2020, 01:23 PM

Touring Petrified Forest Nat'l Park, you see ancient Pine Trees that were covered by sediments and, over eons, turned from organic material to mineral "logs". Every cell of the trees was filled with various minerals and turned to stone over time. Erosion exposed these "fac-similes" and we can marvel at these remnants of 180 million years old forests. Taken with a Pentax K1 and DFA 28-105 mm lens @ 45 mm FL and f/16.



Last edited by RICHARD L.; 05-13-2020 at 02:48 PM.
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05-15-2020, 05:42 AM   #2
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Nice use of DOF and the colours are really spectacular. I love the way they just keep going to the vanishing point up the hill. Nice shot!
07-13-2021, 10:46 PM   #3
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QuoteOriginally posted by RICHARD L. Quote
Touring Petrified Forest Nat'l Park, you see ancient Pine Trees that were covered by sediments and, over eons, turned from organic material to mineral "logs". Every cell of the trees was filled with various minerals and turned to stone over time. Erosion exposed these "fac-similes" and we can marvel at these remnants of 180 million years old forests. Taken with a Pentax K1 and DFA 28-105 mm lens @ 45 mm FL and f/16.
they look like they were once cut, like firewood
07-14-2021, 12:11 AM   #4
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probably were all aligned as logs but rolled around by glacial activity or possibly fossikers over the years ??

07-14-2021, 03:00 AM   #5
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Glaciation never reached this particular region. Living trees fell and were buried or submerged immediately, so they could not rot and disappear rapidly. There was an ancient ocean covering these lands eons ago and they were located nearer the equator at the time. This is the result of "geology" in action.
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