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MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Near Desbarats in Algoma District, Ontario — Central Canada
 

“Ripple Rock”

 
 
"Ripple Rock" Marker image. Click for full size.
By Kevin Craft, July 4, 2017
1. "Ripple Rock" Marker
Inscription.
The ripple marks on the adjacent rock face were made some two billion years ago by waves in a shallow body of water. Buried by later deposition of silt and then subjected to great pressure, the rippled sand became sandstone. The formation was subsequently tilted 60 from the horizontal by crumpling of the Earth's crust. This exceptional feature is of particular interest in that there are at least three distinct beds of sandstone, two of them with ripple-marks oriented almost at right angles to each other. This implies an abrupt change in the direction either of the shoreline or of the current.
 
Erected by Archaeological and Historic Sites Board of Ontario.
 
Location. 46° 20.262′ N, 83° 57.318′ W. Marker is near Desbarats, Ontario, in Algoma District. Marker is on Trans-Canada Highway (Provincial Highway 17) 1.5 kilometers west of Kensington Road, on the right when traveling west. Touch for map. Marker is located in a gravel pull-out. Marker is in this post office area: Desbarats, Ontario P0R 1E0, Canada.
 
Other nearby markers. At least 1 other marker is within 14 kilometers of this marker, measured as the crow flies. The Bruce Mines (approx. 13.5 kilometers away).
 
Also see . . .  Ontario Plaques - Ripple Rock
Wideview of "Ripple Rock" Marker image. Click for full size.
By Kevin Craft, July 4, 2017
2. Wideview of "Ripple Rock" Marker
. See excellent photo of rippled rock (Submitted on July 16, 2017, by Kevin Craft of Bedford, Quebec.) 
 
Categories. EnvironmentNatural Features
 
 
Credits. This page was last revised on July 16, 2017. This page originally submitted on July 16, 2017, by Kevin Craft of Bedford, Quebec. This page has been viewed 67 times since then. Photos:   1, 2. submitted on July 16, 2017, by Kevin Craft of Bedford, Quebec.
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