Answer:
This consists of pebbly beds associated with ancient blown sands, sometimes of considerable thickness. Above this series of deposits comes the Head or Rubble Drift, formed during a greater elevation of the land.
<span>Aid agencies estimated that approximately four million residents of Somalia required food aid in 2009. </span>
Answer :About 80% of earthquakes occur where plates are pushed together, called convergent boundaries. Another form of convergent boundary is a collision where two continental plates meet head-on.
Explosions occurring in magma chambers
The second type of eruption caused by tectonic plates is when the plates move away from each other allowing magma to rise and fill the the gap, which can cause a gentle explosion of thin lava of temperatures between 800 to 1,200C
Answer:
index fossils, intrusions, and cross-cutting relationships
Explanation:
The relative ages of rocks involves using relationships within a sequence to infer the likely age of a rock unit.
There several principles that can be used to infer the relative ages of rocks.
- Using materials such as index fossils, intrusions, and cross-cutting relationships, we can place strata into their ages.
- Fossils are the remains of organisms preserved in rocks.
- Intrusions are bodies that cuts through a rock
- Cross - cutting relationships are features like fractures that are cuts a rock.
