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)
no they are not deep to reach the mantle
if you dug2,900km then you would hit the mantle
1,800 miles deep
No. Magma is melted rock. The rock deep in the mantle is almost entirely solid.
A mantle plume.
Earth's mantle is 2,900 km thick (1,800 miles)
They go down in the mantle
roughly 2900 km
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.
No ore is found in the mantle because it is not possible to dig that deep to find anything.
Conduction. Heat istransferred from the mantle to the crust, melting it to become part of the mantle.
False. Density increases with increasing depth.
Because there are deep-ocean trenches which are deep under water canyons.
The volcanoes of Hawaii
The heat from deep in the earth's mantle.