ERSC 1p01 exam Question and answers
correctly solved
. Ancient metamorphic rocks exposed at the surface form a large area of
Canada known as the
Canadian shield
. For a high-grade metamorphic rock to convert to a low-grade metamorphic
rock during exhumation (retrograde metamorphism), there must be
the addition of H2O
Caused by shearing under elevated pressures and temperatures, this
metamorphic rock forms deep along fault zones. It is a
mylonite
The distinct belt of metamorphic rock that forms around an igneous intrusion
is called a metamorphic
aureole
Lava erupted underwater in multiple globular masses up to about 1 m across
is known as
pillow lava
, A large volcano of low-angle slope whose structure comprises a series of
basaltic flows is called a
shield volcano
Which one of the following statements is TRUE of basaltic lava?
Its eruption is usually non-explosive
Which ONE of the following statements is TRUE?
Tephra is a general term for unconsolidated debris erupted from volcanoes
A mudflow of pyroclastic debris mixed with water is known as a
lahar
Flood basalts of the Snake River plain (Idaho) and Columbia River basalt
(Oregon) were caused by
hot spot volcanism
When an earthquake occurs, the place on land that is immediately above the
point of initial failure is known as the
epicentre
correctly solved
. Ancient metamorphic rocks exposed at the surface form a large area of
Canada known as the
Canadian shield
. For a high-grade metamorphic rock to convert to a low-grade metamorphic
rock during exhumation (retrograde metamorphism), there must be
the addition of H2O
Caused by shearing under elevated pressures and temperatures, this
metamorphic rock forms deep along fault zones. It is a
mylonite
The distinct belt of metamorphic rock that forms around an igneous intrusion
is called a metamorphic
aureole
Lava erupted underwater in multiple globular masses up to about 1 m across
is known as
pillow lava
, A large volcano of low-angle slope whose structure comprises a series of
basaltic flows is called a
shield volcano
Which one of the following statements is TRUE of basaltic lava?
Its eruption is usually non-explosive
Which ONE of the following statements is TRUE?
Tephra is a general term for unconsolidated debris erupted from volcanoes
A mudflow of pyroclastic debris mixed with water is known as a
lahar
Flood basalts of the Snake River plain (Idaho) and Columbia River basalt
(Oregon) were caused by
hot spot volcanism
When an earthquake occurs, the place on land that is immediately above the
point of initial failure is known as the
epicentre
