WoGE #170. Click to Enlarge.Yay! I just won another Where on (Google) Earth! [Note: the WoGE link is dead, at least until Ron Schott gets back from the field, so there is no location information or winners list currently available.]
I won WoGE #169 by Peter Luffi, which was a bit of the Denali Fault near Cantwell, Alaska. Here's how I found it. First, I thought the area looked familiar, and it in fact reminded me of Tertiary volcanic rock sitting on top of Tertiary sediments. Using this false idea, I immediately started hunting in Idaho, thinking of east-west rivers and the Eocene Challis Volcanics. I soon gave up on that area and piddled around, hovering over the western U.S. in Google Earth.
The scale of the hills and rivers in the image compared to hills and rivers in Idaho and other western states, made me realize that I would need to look elsewhere. The large wash in the northwestern corner of WoGE#169 looked like glacial rivers and washes I've seen in Canada and Alaska. I thought about that and came up with the east-west valley area where the bus goes to Denali from Denali Park headquarters, some few miles north of the actual #169 area. I checked that area out thoroughly to no avail, and realized it was incorrect; nevertheless I kept looking in the region, thinking that I should find the Eocene Cantwell Formation. (Stuck in the Eocene, for some reason.) I was fortunately in the right area for the wrong reason. As soon as I thought about east-west faults, the fate of WoGE#169 was sealed. The portion of the Denali Fault shown is just west of the area of the 2002 7.9 earthquake.
To win this WoGE #170, be the first to put the correct latitude and longitude in the comments, and describe the geology of the area! No Schott Rule this time. If you win, it's up to you to choose the next WoGE!
Them thar's the rules.