The Cretaceous - Tertiary boundary can be easily observed in the rock layers. The geological signature is a thin band of rock. The thin band of rock is easily distinguishable from the other layers as it also has much darker color. The amount of carbon in this layer is much higher, and there is also zirconium, which usually is not found on Earth as it is extremely rare. The reasons to why this boundary has formed are the asteroid impact and the immense volcanic activity that it triggered.
Assuming this involves another form of shifting tectonic plates, the answer would be earthquakes. Another form of the question is asking for continental drift.
Explanation:
as the ocean plate is pushed under the overriding continental plate the ocean sedimentary layers are heated compressed and melted the pressure of the converging plates that create the subduction zone forces the Continental play upwards creating mountain ranges such as Andes
Answer:
At the equator, the sun is directly overhead at noon on these two equinoxes. The "nearly" equal hours of day and night is due to refraction of sunlight or a bending of the light's rays that causes the sun to appear above the horizon when the actual position of the sun is below the horizon.
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