-
become extrusions.
Examples of
diatremes include the
Blackfoot diatreme and
Cross diatreme in
British Columbia, Canada.
Diatremes are
sometimes ****ociated with...
-
nepheline syenite plutons; a
nearby diatreme (Rutan Hill); and
several other nearby and much
smaller ****s, sills, and
diatremes. The two
large nepheline syenite...
-
volcanoes in
Canada "Comparative
mineralogy of
three ultramafic breccia diatremes in
southeastern British Columbia Cross,
Blackfoot and HP* (82J, 82G, 82N)"...
- cones, stratovolcanoes,
shield volcanoes,
submarine volcanoes, calderas,
diatremes, and maars,
along with less
common volcanic forms such as
tuyas and subglacial...
- Wells. It has a
diameter of 600 m (1,969 ft) and is one of the
nearly 100
diatremes in the
central Mackenzie Mountains.
Volcanism of
Canada Volcanism of Northern...
-
quartz crystals in a silica-deficient lava and
diamonds within kimberlite diatremes.
Xenoliths can be non-uniform
within individual locations, even in areas...
-
volcanoes in
Canada Comparative mineralogy of
three ultramafic breccia diatremes in
southeastern British Columbia Cross,
Blackfoot and HP* (82J, 82G, 82N)...
- at
intersections of ****s
where p****age of
magma is
least obstructed.
Diatremes and
breccia pipes are pipe-like
bodies of
breccia that are
formed by particular...
- is in two
diatreme breccias,
named the Peñasco and the
Brecha Azul. The
mineralization contains gold, silver, lead and zinc. The
diatremes flare upward...
- of
three ultramafic breccia diatremes in
southeastern British Columbia Cross,
Blackfoot and HP* (82J, 82G, 82N)
Diatreme breccias In
British Columbia...
