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The NAKP kimberlite fields are aligned along a northeast–southwest trend for a distance of about 350 km (220 mi), roughly subparallel to structural discontinuities called the Great Slave Lake Shear Zone to the north and the Snowbird Tectonic Zone to the south.
Lamproite pipes operate similarly to kimberlite pipes, except that the boiling water and volatile compounds contained in the magma act corrosively on the overlying rock, resulting in a broader cone of eviscerated rock (the ejection of this rock also forms a tuff ring, like kimberlite eruptions). This broad cone is then filled with volcanic ash ...
Kimberlite occurs in the Earth's crust in vertical structures known as kimberlite pipes, as well as igneous dykes and can also occur as horizontal sills. Kimberlite pipes are the most important source of mined diamonds today. The consensus on kimberlites is that they are formed deep within Earth's mantle.
Print/export Download as PDF ... move to sidebar hide. Help. Map all coordinates using ... GPX (secondary coordinates) Pages in category "Birch Mountains kimberlite ...
The ML pipes form part of the Northern Alberta kimberlite province, along with the nearby Birch Mountains kimberlite field and the Buffalo Head Hills kimberlite field.They were discovered in 1989-90 just north of Mountain Lake (55.456291n 117.714510w), which lies about 75 km (47 mi) northeast of Grande Prairie, Alberta.
It is within the Lake Timiskaming Structural Zone which contains over 50 kimberlite pipes, several of which are diamondiferous. [1] The Lake Timiskaming kimberlite field formed about 147 million years ago when the North American Plate moved westward over the long-lived New England hotspot , also referred to as the Great Meteor hotspot.
The Fort à la Corne kimberlite field is a 104- to 95-million-year-old diamond-bearing kimberlite field in east-central Saskatchewan, Canada. Its kimberlite pipes are among the most complete examples in the world, preserving maar -shaped craters .
The Gahcho Kué kimberlite pipes is a cluster of Cambrian kimberlite diatremes located 280 km (174 mi) northeast of Yellowknife, Northwest Territories, Canada. It consists of five pipes: 5034, Hearne, Wilson, Tuzo and Tesla.