No, you are missing about 70 million years. The Triassic period and Permian are between the Pennsylvanian and the Jurassic.
The intrusion is younger than the overlying sedimentary rock.
Metamorphic
Pressure from weight of overlying rock.
Metamorphic
sinkholes
The intrusion is younger than the overlying sedimentary rock.
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Thymus
Overlying bowel gas is more or less exactly what it sounds like - a bubble of air in the intestines that is on top of another structure you want to image with the ultrasound. Unfortunately, air bounces ultrasound waves back and doesn't allow you to see what's behind it, so you may see "overlying bowel gas" in an ultrasound report indicating the technician was unable to see some of the abdominal viscera.
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The skin overlying bony prominences is the most prone to developing ulceration.
Metamorphic
Pressure from weight of overlying rock.
Metamorphic
Metamorphic
sediment
The strata or rock layers of the grand canyon walls are undisturbed. As such, a layer of rock containing a fossil, that is below an overlying rock layer will be older.