Ottawa Gatineau Geoheritage

The Ottawa-Gatineau Geoheritage Project promotes greater public knowledge and appreciation of the geology and related landscapes in and around Canada's National Capital Region

Explore geoheritage daY

Held October 16th, 2016 (click here to see details on Geoheritage Day 2017)

Ottawa Geoheritage Day 2016 (A joint effort of Carleton University's Department of Earth Sciences and the Ottawa Geoheritage Project), designed to introduce the public to some of our local geowonders, would have been a complete washout yesterday.   However, it was not because of the remarkable enthusiasm of brave souls who ventured out in blasts of torrential rain. The 'official forecast' was still posted as "light scattered showers" when I set out to get organized at one of our eight local geosites, my favourite spot on the north shore of the Ottawa River.

Below is an aerial view of a part of this exposure of Ordovician stromatolites, plus a photo of two keen francophone visitors, one of my former BSc students (John McEwen, on the left), and yours truly in a Shark Bay shirt, displaying the analogue of present-day stromatolites in Western Australia. This photo was taken by new Carleton University MSc student Scott Hutchison, an essential volunteer guide who led successive trips for 21 souls over this shoreline outcrop, the best bedrock exposure of stromatolites within a National Capital region anywhere in the world.

Allan (J.A.) Donaldson, 
Chair, OGGP

 Ordovician stromatolites

Ordovician stromatolites


Sunday, October 16th, 2016
10 a.m. – 3 p.m.

Come join us at your local parks and green spaces for our 8th annual Geoheritage Day! You will have the chance to learn how geological processes have shaped the regional landscape, given us a glimpse into past environments and life forms and provided resources for our use. Volunteers from Carleton University’s Department of Earth Sciences and the Ottawa-Gatineau Geoheritage Project will be on hand to explain what there is to see and how each site fits into the local geological history.

Come out and spend the day with some remarkable rocks, minerals and fossils!

Events in and around Ottawa


Doors Open

A great opportunity to visit built heritage structures in Ottawa to learn about their history and see a variety of building stones.


The Annual Gem, Mineral & Jewellery Show & Sale

September 20 & 21, 2014

Nepean Sportsplex, 1701 Woodroffe Avenue, Ottawa

For further information visit the website of the Ottawa Lapsmith and Mineral Club 

Science Funfest is an open house event that takes place at Natural Resources Canada's Booth Street Complex, at the corner of Carling Avenue and Booth Street in Ottawa. It's a wonderful opportunity for children and anyone interested in science to engage in presentations and gain hands on science experience by participating in activities that will showcase the importance of science in a fun and interactive way. We invite you to bring your rocks and fossil samples to the Geological Survey of Canada for identification.


Explore Geoheritage Day

Explore Geoheritage Day takes place each October during National Science and Technology Week, and seeks to provide the general public with an opportunity to become more familiar with the Geoheritage of the National Capital Region. We invite you to join volunteers from Carleton University's Department of Earth Sciences and the Ottawa Gatineau Geoheritage Project at area parks, heritage sites and green spaces and learn how geological processes have shaped the local landscape and provided resources for our use.

For more information on this October's dates, times and locations visit or