Lac De Gras Kimberlite Field
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The Lac de Gras kimberlite field is a group of
Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cre ...
to
Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...
age
diatreme A diatreme, sometimes known as a maar-diatreme volcano, is a volcanic pipe associated with a gaseous explosion. When magma rises up through a crack in Earth's crust and makes contact with a shallow body of groundwater, rapid expansion of heated ...
s in the
Northwest Territories The Northwest Territories is a federal Provinces and territories of Canada, territory of Canada. At a land area of approximately and a 2021 census population of 41,070, it is the second-largest and the most populous of Provinces and territorie ...
,
Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
. The
Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...
(ca. 55-50 Ma) age diatremes of the Lac de Gras kimberlite field support two world-class diamond mines called
Ekati The Ekati Diamond Mine, often simply called Ekati, is Canada's first surface and underground diamond mine and is owned by Burgundy Diamond Mines. It is located north-east of Yellowknife, Northwest Territories, and about south of the Arctic C ...
and Diavik. Ekati, Canada's first diamond mine, has produced of diamonds out of six open pits between 1998 and 2008, while Diavik to the southeast has produced of diamonds since its foundation in 2003.


See also

*
List of volcanoes in Canada List of volcanoes in Canada is an incomplete list of volcanoes found in Geography of Canada, mainland Canada, in the Islands of Canada, Canadian islands and in Canadian waters. All but two Provinces of Canada, provinces, Prince Edward Island and ...
*
List of volcanic fields A list of volcanic fields follows below. {{Incomplete list, date=May 2025 Africa Algeria * Atakor volcanic field * In Teria volcanic field * Manzaz volcanic field * Nemours-Nedroma * Tafna Beni Saf * Tahalra volcanic field Cameroon * Oku Volcan ...
*
Volcanism of Canada Volcanic activity is a major part of the geology of Canada and is characterized by many types of volcanic landform, including lava flows, volcanic plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, submarine volcanoes, calder ...
* Volcanism of Northern Canada


References

Diatremes of the Northwest Territories Geology of the Northwest Territories Cretaceous volcanoes Paleocene volcanoes Eocene volcanoes Volcanic fields of Canada {{NorthwestTerritories-geo-stub