Davie Tennis Stadium is a set of courts in a former quarry, administered by Oakland but situated within Piedmont. But what about the stone, you ask.
I haven’t checked the whole place out, but the exposures near the entrance display this dark chert or siliceous metashale. The quarry exploited the Novato Quarry terrane of the Franciscan complex, a large pod of which underlies Piedmont and its immediate surroundings. The terrane is mostly sandstone, but some fine-grained rocks occur in it too.
I’ll be leading a walk to this and three other Oakland quarries for the Oakland Urban Paths organization on February 11. Watch the OUP site for details.
12 February 2012 at 5:15 pm
By the way, I wrote about some other former quarries in the Bay area over at KQED Quest Science Blogs in August at science.kqed.org/quest/2011/08/11/what-happens-to-old-quarries
17 February 2012 at 8:48 am
This is off topic but I’m wondering where I can take my “rock hound” granddaughter to see/collect some local rocks. I know about the chert outcrop on Claremont Canyon. I’d also like to find some nearby serpentine and anything that’s of interest.
BTW. She is only seven yrs old but really into rocks.