Mackenzie hotspot

Mackenzie hotspot

The Mackenzie hotspot was a hotspot that existed about 1,267 million years ago across Canada from the Northwest Territories and Nunavut. It is responsible for the Mackenzie dike swarm, which is the largest dike swarm on Earth. [ [http://gdcinfo.agg.nrcan.gc.ca/app/dyke/index_e.html Supressing Varying Directional Trends] Retrieved on 2007-01-10] During its formation, eruption of plateau lavas near the Coppermine River, built an extensive volcanic plateau about 1,200 million years ago with an area of about 170,000 km² (65,000 sq mi) representing a volume of lavas of at least 500,000 km³ (120,000 mi³).

The Mackenzie hotspot also resulted in the opening of the Mesoproterozoic Poseidon Ocean.

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Mackenzie — Mackenzie, MacKenzie, McKenzie, Mackynzie may refer to: Contents 1 People 1.1 Fictional characters 2 Dogs …   Wikipedia

  • Hotspot (geology) — In geology, a hotspot is a location on the Earth s surface that has experienced active volcanism for a long period of time. J. Tuzo Wilson came up with the idea in 1963 that volcanic chains like the Hawaiian Islands result from the slow movement… …   Wikipedia

  • Mackenzie dike swarm — The Mackenzie dike swarm, also called the Mackenzie dikes, form a large igneous province in the western Canadian Shield of Canada. It is one of more than three dozen dike swarms in various parts of the Canadian Shield and is the largest dike… …   Wikipedia

  • Matachewan hotspot — The Matachewan hotspot was a volcanic hotspot responsible for the creation of the large 2,500 to 2,450 million year old Matachewan dike swarm, as well as continental rifting of the Superior and Hearne cratons during the Paleoproterozoic period.… …   Wikipedia

  • Mount MacKenzie — Elevation 2,143 m (7,031 ft) Prominence 378 m (1,240 ft) …   Wikipedia

  • Neys Provincial Park — IUCN Category II (National Park) Location …   Wikipedia

  • Muskox intrusion — Geologic map of the Muskox intrusion and adjacent geologic groups The Muskox intrusion is a layered intrusion in Nunavut, Canada. It is located 144 km (89 mi) northeast of Great Bear Lake and 90 km (56 mi) south of Kugluktuk… …   Wikipedia

  • Nordwest-Territorien — Northwest Territories Territoires du Nord Ouest Nordwest Territorien Wappen Flagge (Details) …   Deutsch Wikipedia

  • Scottish place names in Canada — This is a list of placenames in Scotland which have subsequently been applied to parts of Canada by Scottish emigrants or .For Nova Scotian names in Scottish Gaelic (not necessarily the same as the English versions) please see Canadian… …   Wikipedia

  • Proterozoic — The Proterozoic (pronEng|ˌproʊtərəˈzoʊɪk) is a geological eon representing a period before the first abundant complex life on Earth. The Proterozoic Eon extended from 2500 Ma to 542.0 ± 1.0 Ma (million years ago), and is the most recent part of… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”