At Tews Falls the sedimentary material started building up during the Ordovician and Silurian periods about 450 million years ago. and finished approximately 150 years later. The reddish shale near the base of the rock face was developed in the Ordovician period. Formation Of Shale: Over time, layers of deposited sediments and remains were compressed and turned to rock. We call this “sedimentary” rock. Mud and silt would form layers of shale; sand into sandstone; and corals, calcium-rich exoskeletons and lime mud into limestone. This Would Create a"layerey" type look to it. The Rocks You Are Seeing Here Are Mostly Part Of The Lockport Dolostone Formation. And Lower Possible A Tiny Bit Of The Queenston Formation.

Photo

As Seen In The Photo, The Creation Of The Niagara Escarpment Revealed Many Of The Different Rock Formations. That is Why When You Look At The Falls You See Different Types Of Rock All Stacked On Top Of Each Other. As You Can See At GZ, the Top layer is mostly shale and is layered into bits. the closer it gets to the ground the more of the queenston formation is shown.

Logging Tasks

Once Answers Are Emailed You May Log A Find

1. Go To GZ, How Large Would You Say The Top Layer Of Shale Is?

2. The Rocks Around The Falls Are 2 Colors, What Colors Are They?

3. At the Time Of Your Visit, How Much Water Was Going Over The Falls