05 August, 2009

Where on (Google) Earth #168!!!

Recently, I was able to finally resolve the long, long waiting WoGE #167 chosen by Rod and posted on Ron Schott's Home Companion. The Rules are simple: Identify the location shown, give latitude and longitude and post some information about the geological significance of the location shown. If you win you get to host the next WoGE! If you don't happen to have a blog you can chose who may host your next WoGE.

To speed-up the next WoGE I will not invoke the Schott rule. Anyone may reply the moment they can identify and describe the target. Perhaps the veterans who already won several times can wait for a few hours before posting in order to give the new participants a chance.

Below you will find the new WoGE #168. Good luck in the hunt!

Click image to enlarge!


Peter L said...

38.775N, 4.847W - the view features the worldwide famous mercury mine of Almaden, Ciudad Real province, Spain. The mercury deposits in the Almaden area lie in the Ordovician to Devonian transgressive sequences of the Central Iberian Zone and are associated to interlayered alkali basalt sills, dykes, flows, bedded pyroclastic deposits and, most importantly, phreatomagmatic explosion breccias (frailesca). The mineralization that has been mined over millenia in the western end of Almaden (zoom-in and see the mine museum in GE!) consists of lenticular strata-bound cinnabar impregnations in the Lower Silurian Criadero quartzite formation, in contact with a lens of frailesca filling a crater that pierce this quartzite. The origin of the mercury deposit is still under debate: it could have been derived from the surrounding sediments, but it's more plausible that its source is the basaltic rocks themselves. The story is obscured by metamorphic remobilization of Hg associated with the Hercynian metamorphism that overprints these units.

Lost Geologist said...

Totally correct. You won again! Please post your next WoGE link here once it's ready.

Peter L said...

Sorry for the delay, WoGE#169 is up now. Enjoy!