10) Using the following tables:Oceanic Layers:Density (kg/m³)Thickness (m)Layer 1: SeawaterLayer 2: SedimentLayer 3: Oceanic lithosphereContinental Layers:Layer 2: Continental lithosphere | 2,700Pn = Density of layer n (kg/m³)h, = Thickness of layer n (m)P = Pressure (N/m²)g = Acceleration of gravity = 9.81 m/s²1,030| 2,4002,9003,6001,00050,00070,000P = g(pihi + pzh2 + ... + Pnha)a) Calculate the pressure (P) in the mantle beneath the oceansb) Calculate the pressure (P) in the mantle beneath the continentsc) Which has a greater pressure? In terms of Isostasy, explain what this means.

Answered: 10) Using the following tables: Oceanic…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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Question

10) Using the following tables:
Oceanic Layers:
Density (kg/m³)
Thickness (m)
Layer 1: Seawater
Layer 2: Sediment
Layer 3: Oceanic lithosphere
Continental Layers:
Layer 2: Continental lithosphere | 2,700
Pn = Density of layer n (kg/m³)
h, = Thickness of layer n (m)
P = Pressure (N/m²)
g = Acceleration of gravity = 9.81 m/s²
1,030
| 2,400
2,900
3,600
1,000
50,000
70,000
P = g(pihi + pzh2 + ... + Pnha)
a) Calculate the pressure (P) in the mantle beneath the oceans
b) Calculate the pressure (P) in the mantle beneath the continents
c) Which has a greater pressure? In terms of Isostasy, explain what this means.

Expert Solution

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The Pressure(P) on an area can be determined by the formula $P = ρ g h$ . Here, $h$ is the thickness of the overlying layer.

In the case of multiple overlying layers, the formula will be $P = g (ρ_{1} h_{1} + ρ_{2} h_{2} + . . . . . . . . . . . + ρ_{n} h_{n})$ , where $n$ is the number of overlying layers.