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Northern Alberta kimberlite province : ウィキペディア英語版 | Northern Alberta kimberlite province
The Northern Alberta Kimberlite Province (NAKP) consists of three groups of diatremes or volcanic pipes in north-central Alberta, Canada, most of which are kimberlites and some of which are diamondiferous. They are called the Birch Mountains (BM), Buffalo Head Hills (BHH), and the Mountain Lake cluster (ML), and they were discovered between about 1990 and 1997. Most of the diatremes were emplaced during the Late Cretaceous Epoch (Turonian to Maastrichtian stages) although a few are as young as early Paleocene.〔Boyer, L., McCandless, T., Tosdal, R. and Russell, K. 2008. Volcanic facies and eruption styles in the Cretaceous Buffalo Head Hills kimberlites, Alberta, Canada. 9th International Kimberlite Conference, Extended Abstract 9IKC-A-00367-2, 3 p.〕 ==Location== The NAKP kimberlite fields are located about to north to northwest of Edmonton in an area bounded by 55° and 57°N latitude and 115° and 118°W longitude. The area lies within the Canadian boreal forest and is sparsely settled. It includes the Buffalo Head Hills and the Birch Mountains, and is crossed by the Wabasca River and Alberta Highway 88.〔
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