That's an interesting statement, since basalt can't be foliated - it's igneous.
Per my posted yesterday:
Quote
According to available geological maps, the Oroville Dam is build on the Smartville ophiolite, consisting of dark grey, steeply-dipping and strongly foliated metamorphic rocks. Once of volcanic origin, erupted in an ancient sea, the rocks were uplifted and metamorphosed during the formation of the Sierra Nevada.
OK,...let's hear it. WTF, Over ?
Yep - foliated metamorphic rock. Basalt is igneous - not metamorphic. If basalt goes through the metamorphic process, it becomes...something other than basalt. Hence, my "interesting statement" statement. But didn't I follow that up with "never mind that"?
