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Earth's mantle is a rocky shell about 2,890 km (1,800 mi) thick that constitutes about 84 percent of Earth's volume. Two main zones are distinguished in the upper mantle: the inner asthenosphere composed of flowing rock in the state of plasticity, about 200 km thick, and the lowermost part of the lithosphere, composed of rigid rock, about 50 to 120 km thick. A thin crust, the upper part of the lithosphere, surrounds the mantle and is about 5 to 75 km thick. The mantle is divided into sections which are based upon results from seismology. These layers (and their depths) are the following: the upper mantle (starting at the Moho, or base of the crust around 7 to 35 km, downward to 410 km), the transition zone (410-660 km), the lower mantle (660-2891 km), and in the bottom of the latter region there is the anomalous D" layer with a variable thickness (on average ~200 km thick)
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Are mines deep enough to reach the mantle?
no they are not deep to reach the mantle
What are plumes of molten rock originating deep within the mantle known as?
mantle plumes
What is a deep earthquake?
Deep earthquakes occur in a region of the mantle called the Benioff zone, where seismic activity follows the interaction between a subducting plate and the upper mantle.
Is the deep mantle mostly solid?
Of course.
Is the asthenosphere located between the mantle and outer core?
The asthenosphere is part of the upper mantle. It's upper boundary is approximately 100 km deep and it's base is around 700 km deep.
Are mines deep enough to reach the mantle?
no they are not deep to reach the mantle
Is solid rock located deep in the mantle called magma?
No. Magma is melted rock. The rock deep in the mantle is almost entirely solid.
What are plumes of molten rock originating deep within the mantle known as?
mantle plumes
Plumes of the molten rock originating deep within the mantle are known as?
Mantle Plumes
What is a deep earthquake?
Deep earthquakes occur in a region of the mantle called the Benioff zone, where seismic activity follows the interaction between a subducting plate and the upper mantle.
how many km deep is the earths mantle?
2900 km
Is the deep mantle mostly solid?
Of course.
At deep ocean trenches what allows oceanic crust to sink back into the mantle?
Conduction. Heat istransferred from the mantle to the crust, melting it to become part of the mantle.
What is a energy source for hydrothermal vent?
The heat from deep in the earth's mantle.
Oceanic crust returns to the mantle at deep ocean trenches which are?
rocks
Is the asthenosphere located between the mantle and outer core?
The asthenosphere is part of the upper mantle. It's upper boundary is approximately 100 km deep and it's base is around 700 km deep.
What is the layer just outside of the outer core?
Mesosphere or you could call it the deep mantle.
