Pete Tillman
Vertical blueschist outcrop, freshly washed by last week's rain
Blueschist is a peculiar metamorphic rock, generally limited to subduction zones such as Calif's coastal margin, known to geologists (and others) as an Active Margin. This was a big change for me, as I went to school in Houston and North Carolina, both geologically passive margins.
Anyway: this photo is from a prominent Blueschist 'knocker' on the coastal trail from Lone Palm road to New San SImeon, about a half-mile north of that trailhead. An excellent place to examine this uncommon rock. If you look closely, you will also find a Bedrock Mortar from earlier days.
Vertical blueschist outcrop, freshly washed by last week's rain
Blueschist is a peculiar metamorphic rock, generally limited to subduction zones such as Calif's coastal margin, known to geologists (and others) as an Active Margin. This was a big change for me, as I went to school in Houston and North Carolina, both geologically passive margins.
Anyway: this photo is from a prominent Blueschist 'knocker' on the coastal trail from Lone Palm road to New San SImeon, about a half-mile north of that trailhead. An excellent place to examine this uncommon rock. If you look closely, you will also find a Bedrock Mortar from earlier days.