What is the term for basaltic lavas that have a rough Rubbly surface?

What is the term for basaltic lavas that have a rough Rubbly surface?

ʻAʻā is basaltic lava characterized by a rough or rubbly surface composed of broken lava blocks called clinker. These surface features are due to the movement of very fluid lava under a congealing surface crust.

What is the cloud that rises from an explosively erupting volcano made of?

An eruption column or eruption plume is a cloud of super-heated ash and tephra suspended in gases emitted during an explosive volcanic eruption. The volcanic materials form a vertical column or plume that may rise many kilometers into the air above the vent of the volcano.

What type of volcano has the most gently sloping sides due to the low viscosity of the basaltic lavas that form them?

Shield Volcano

What was unusual about the 1986 volcano-related disaster quizlet?

What was unusual about the 1986 volcano-related disaster near Lake Nyos in Cameroon? It will erupt explosively because the volcanic gases have no way to escape slowly. If A volcano was actively releasing a large amount of volcanic gas and then abruptly stopped.

What type of volcano is Cerro Negro located in Nicaragua?

Cinder cones

Which geological setting is likely to experience the least amount of seismic activity?

convergent-plate boundaries

Which of the following US regions is least likely to experience a major earthquake?

Florida and North Dakota are the states with the fewest earthquakes.

What will happen when a fault at the bottom of the sea suddenly moves?

When the rough spots can no longer hold, the sudden release of the built-up motion releases, and the sudden movement under the sea floor causes a submarine earthquake. This area of slippage both horizontally and vertically is called the epicenter, and has the highest magnitude, and causes the greatest damage.

What would happen if San Andreas Fault breaks?

CoreLogic, a business analysis service, estimated a Southern San Andreas fault rupture will cause 3.5 million homes to be at risk with $289 billion in reconstruction value. Water, electricity and gas lines cross the San Andreas fault in Los Angeles. They break during the quake and remain unfixed for months.

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