"Ripple Rock"

"Ripple Rock" (tmp-791cf)

Location: Desbarats, Ontario P0R 1E0 Algoma District
Country: Canada
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N 46° 20.262', W 83° 57.318'

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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.
HM Numbertmp-791cf
Placed ByArchaeological and Historic Sites Board of Ontario
Marker ConditionNo reports yet
Date Added Wednesday, July 19th, 2017 at 5:12pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)17T E 272565 N 5135814
Decimal Degrees46.33770000, -83.95530000
Degrees and Decimal MinutesN 46° 20.262', W 83° 57.318'
Degrees, Minutes and Seconds46° 20' 15.72" N, 83° 57' 19.08" W
Driving DirectionsGoogle Maps
Which side of the road?Marker is on the right when traveling West
Closest Postal AddressAt or near 7684 ON-17, Desbarats Ontario P0R 1E0, CA
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