Juneau Nature

Natural & cultural history of Juneau & Southeast Alaska

Juneau Nature - Natural & cultural history of Juneau & Southeast Alaska

updated surficial and bedrock geologic maps

Just spent 3 days fine-tuning RD Miller’s wonderful 1972 surficial geology map for Juneau. I expanded it all the way north to the Cowee-Davies watersheds. Some of the more esoteric subtypes have been collapsed into broader landform categories. On the other hand, we now have the ability to more accurately draw unit borders from the exquisite bare earth layer, generated from 2013 LiDAR commissioned by the City for our recent wetland surveys.  The result is in Nature>Geology>Surficial geology

Similarly, I’ve added some fields to the USGS bedrock map to make it easier for non-specialists to use. It’s in Nature>Geology>Bedrock geology.

Category: Uncategorized