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Wittaler [7]
3 years ago
9

Volcanic ash deposits composed of mafic minerals sometimes develop a very distinctive reddish-orange color after weathering at t

he surface. This coloration results from the
Geography
1 answer:
DochEvi [55]3 years ago
7 0
The reddish-orange colour of weathering of volcanic ash is most likely due to its iron sulfide content which oxidizes to iron oxide so that limonite is yellow and hematite is red and in ash since it is such fine grained material it weathers more rapidly because it has a large surface area.
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Radiation and advection

Explanation:

  • Conduction: It happens when particles of matter are in direct contact, the adjacent atoms of higher energy vibrate against each other transferring energy from high to low temperature. Fluids and gases are less conductive than solids because their atoms have a greater distance. An example is the heat transferred between the electric burner of a stove and the bottom of a pan.
  • Convection: Is a heat transference between a surface and a liquid or gas in motion, as the fluid/gas travels faster the transferred heat increases. An example of this transfer takes place in a forced-air furnace and weather systems.
  • Advection: is similar to convection but the transfer of heat is lateral or horizontal. In the atmosphere this kind of transfer is common.
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Advection and radiation are the primary forms of heat transfer. Convection only happens in the troposphere because horizontal heat transfer (advection) is significantly bigger. The same happens with conduction that only transfers heat in the lower layers of the atmosphere, Sun's radiation, on the other hand, gets absorbed in all the atmosphere.

I hope you find this information useful and interesting! Good luck!

4 0
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Volcanic rock has often been found early in the rock record by less frequently in later rock layers. What does this suggest to s
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Logic...

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