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{{subst:Please link images|File:Silurian dolostone bedrock.jpg}} ~~~~
Captions
Silurian dolostone bedrock exposed at the southbound Kennedy Expessway and Addison Street
Items portrayed in this file
depicts
Chicago
dolostone
Silurian
dolomite
creator
some value
object has role: photographer
author name string: IChoseThisName
Wikimedia username: IChoseThisName
copyright status
copyrighted
copyright license
Creative Commons Attribution 4.0 International
coordinates of the point of view
41°56'43.390"N, 87°43'4.890"W
heading: 164.1798401420959 degree
exposure time
0.00826446280991735537 second
f-number
1.78
focal length
6.86 millimetre
ISO speed
200
media type
image/jpeg
instance of
photograph
source of file
original creation by uploader
File history
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