Thursday, May 13, 2010

Where on (Google) Earth? #204



Nic, who does not yet have a blog, has asked me to post the following image for Where on (Google) Earth number 204. I'm going to assume the Schott rule is in effect, unless Nic says otherwise. So wait the allotted time, and go hunting. Post location and geology as soon as you surmise them.

6 comments:

Chuck said...

North is up, if anyone needs a hint...

Jerome said...

6°21'43.00"N and 60°35'44.88"W

Basin of the Mazaruni River in Guyana. The area is partially underlain Precambrian shield rocks. The river flows close to some goldfields and has historically been a source of alluvial gold and diamonds of small size but fairly high quality. Placer mining in the area dates back over 120 years and there seems to be renewed interest in finding some of the source areas for these minerals.

nic said...

Nice Jerome, the rocks are the early Proterozoic Roraima Group sediments and do indeed host placer diamond and gold placer deposits. Locally these flat toped mountains are known as Tepui’s, and are said to be the inspiration for Arthur Conan Doyles 1912 novel “The Lost World”.

On a side note, Jerome your name’s familiar, you ever work for Goldstone?

Chuck said...

You're up, Jerome.

Jerome said...

WoGE#205 is now available at:

http://sedimentsexactly.blogspot.com/

Chuck said...

I've never actually been there, but I have samples from the locale that I got from a mining company's warehouse in Georgetown. What's the deal with you people WoGEing places I've studied?