Mount
Meru:
Meru is a stratovolcano in Tanzania. Its history has
been quite explosive. It has had four eruptions, the
last of which occurred in 1910. Lava erupted from
Meru varies from thin flows to thick intusive domes.
The main cone of the volcano has a caldera which is
2.2 miles (3.5 km) in diameter. It has a huge breach
on its eastern side. A graben runs down the side of
the volcano from this breach. Many debris flows came
through the breach in the caldera. These cover 1500
sq km to the northeast, east and southeast. Following
the eruption of this debris, a lava dome and ash cone
grew on the floor of the caldera.
Oldonyo
lengai:
Ol Doinyo Lengai means "Mountain of God"
in Maasai language. It is a steep around 2900 m high
stratovolcano located in a section of the East-African
rift valley in northern Tanzania, near the Ngorongongo
and Serengeti National parks. The volcano is known
for its unique type of natrocarbonatite lava and as
such it is the only known active natrocarbonatite
volcano on earth. The diameter of the crater floor
is about 350 to 400 meters and the elevation of the
summit is about 2,086 meters
