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Xena Pipe

Код 1164275

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High Quality Content by WIKIPEDIA articles! The Xena pipe is a diatreme associated with the Birch Mountains kimberlite field in northern Alberta, Canada. It is thought to have formed about 75 million years ago when this part of Alberta was volcanically active during the Late Cretaceous period. A diatreme is a breccia-filled volcanic pipe that was formed by a gaseous explosion. Diatremes often breach the surface and produce a tuff cone, a filled relatively shallow crater known as a maar, or...

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Издательство: Книга по требованию
Дата выхода: июль 2011
ISBN: 978-6-1319-7709-1
Объём: 112 страниц
Масса: 190 г
Размеры(высота, ширина, толщина), см: 23 x 16 x 1

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