Topo Volcanic Complex
Encyclopedia
The Topo Volcanic Complex is a volcanic complex in a part of the island of São Jorge, Azores
. It is made up of lava
origins, basalt
, hawaiite
, mugearite
under type aa, makes up of pyroclastic
origin mostly on circumscripts with cinder cone
s formed by Strombolian eruption
s.
Its main presence are founded in numerous shield volcano
es lining from northwest to southeast and east-southeast to west-northwest. Observes mainly only in coverture, as high as 700 m, and made up of turfs and are saturated in water. Data from K/ar observed by Feraud et al. (1980), that made its volcanic activity on the complex that began around 600,000 years ago.
and several others.
Azores
The Archipelago of the Azores is composed of nine volcanic islands situated in the middle of the North Atlantic Ocean, and is located about west from Lisbon and about east from the east coast of North America. The islands, and their economic exclusion zone, form the Autonomous Region of the...
. It is made up of lava
Lava
Lava refers both to molten rock expelled by a volcano during an eruption and the resulting rock after solidification and cooling. This molten rock is formed in the interior of some planets, including Earth, and some of their satellites. When first erupted from a volcanic vent, lava is a liquid at...
origins, basalt
Basalt
Basalt is a common extrusive volcanic rock. It is usually grey to black and fine-grained due to rapid cooling of lava at the surface of a planet. It may be porphyritic containing larger crystals in a fine matrix, or vesicular, or frothy scoria. Unweathered basalt is black or grey...
, hawaiite
Hawaiite
Hawaiite is an olivine basalt with intermediate composition between alkali olivine and mugearite. It was first described at the island of Hawaii. In gemology, hawaiite is a colloquial term for Hawaii-originated peridot,which is gem-quality olivine mineral....
, mugearite
Mugearite
Mugearite is a type of orthoclase-bearing basalt, comprising olivine, apatite, and opaque oxides. The main feldspar in mugearite is oligoclase....
under type aa, makes up of pyroclastic
Pyroclastic rock
Pyroclastic rocks or pyroclastics are clastic rocks composed solely or primarily of volcanic materials. Where the volcanic material has been transported and reworked through mechanical action, such as by wind or water, these rocks are termed volcaniclastic...
origin mostly on circumscripts with cinder cone
Cinder cone
According to the , Cinder Cone is the proper name of 1 cinder cone in Canada and 7 cinder cones in the United States:In Canada: Cinder Cone In the United States:...
s formed by Strombolian eruption
Strombolian eruption
Strombolian eruptions are relatively low-level volcanic eruptions, named after the Italian volcano Stromboli, where such eruptions consist of ejection of incandescent cinder, lapilli and lava bombs to altitudes of tens to hundreds of meters...
s.
Its main presence are founded in numerous shield volcano
Shield volcano
A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield. This is caused by the highly fluid lava they erupt, which travels farther than lava erupted from more explosive volcanoes...
es lining from northwest to southeast and east-southeast to west-northwest. Observes mainly only in coverture, as high as 700 m, and made up of turfs and are saturated in water. Data from K/ar observed by Feraud et al. (1980), that made its volcanic activity on the complex that began around 600,000 years ago.
Features
Its features around the complex includes the Pico do Brejo do CordeiroPico do Brejo do Cordeiro
Pico do Brejo do Cordeiro is a peak on the island of São Jorge in the Azores.It is located around the area of Norte Pequeno and is intimidatedly related with a peak mountain in the centre of the island. Its elevation is 739 m above sea level and is made up of a pluvial escarpment by the sea. It...
and several others.