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From Susan Ward Aber, in her paper, "Everything You Ever Wanted to Know About Diamonds":
"Diamond may be up to 3 billion years old, which is much older than their surface host rock. Diamond crystallization originates some 200 kilometers, or 320 miles, beneath the surface and the disaggregated crystals are merely transported to the surface via kimberlite and lamproite [volcanic] pipes. These igneous host rock formations are roughly cylindrical in shape and act as a conduit from the Earth's mantle to the contintental crust."
In order for the [volcanic] pipe to exist, "...Volcanic pipes form as the result of violent eruptions of deep-origin volcanoes."
Read more about volcanic pipes, below.
What else can I help you with?
What is an event that must occur in order for diamonds to reach Earth's surface?
'Allow' means to make possible, so you could say that erosion allows diamonds to reach the earth's surface. But it's more interesting than that. Diamonds are formed deep within the earth's mantle and are erupted to the surface -- or near the surface to account for erosion, as above -- by volcanic pipes.
What type of ultramafic rock sometimes contains diamond?
Kimberlites are the rock type that diamonds are usually found in. They are formed when a magma from deep in the mantle drills its way to the surface in a fast gaseous explosive event. Diamonds typically occur as xenocrysts within the Kimberlite matrix. the volcanic deposits are called Lamproite igneous volcanic pipes. Please see the related links.
What effect do those two event have on earths surface?
Those events can cause significant disruptions to Earth's surface. Volcanic eruptions release ash and lava, which can alter landscapes and affect local ecosystems. Earthquakes can result in shaking and shifting of the ground, potentially causing landslides, tsunamis, and structural damage to buildings and infrastructure.
Why is the iron catastrophe called a catastrophe?
The iron catastrophe is termed a catastrophe because it refers to a major event in the formation of a planet where iron sinks to the core due to its high density, causing other elements to rise to the surface. This process leads to the differentiation of a planet into distinct layers, which can dramatically affect its geophysical and geochemical properties.
What are objects from which light can not escape because of a gravitational pull at its surface?
A black hole. However, it does not have a surface but an event horizon.
What is an event that must occur in order for diamonds to reach Earth's surface?
'Allow' means to make possible, so you could say that erosion allows diamonds to reach the earth's surface. But it's more interesting than that. Diamonds are formed deep within the earth's mantle and are erupted to the surface -- or near the surface to account for erosion, as above -- by volcanic pipes.
What event on earths surface occurs in the US of America more than in any other part of the world?
tornadoes
What is the event called when the moon passes directly between the sun and the earth and casts a shadow on the earths surface?
a total eclipse
Can asteroids come in earths atmosphere?
Yes. Asteroids can enter earth's atmosphere. In such an event the asteroid will probably strike earth's surface.
What event marks the beginning of earths's current era?
the mass extiction
What event is caused by the moon passing through earths shadow?
An eclipse
What is the number used to describe the chance of an event occurring?
It is the probability of that event.
An event that must happen for diamonds to reach earth?
You must OD on gas medicine.
Is the Event Horizon the surface of singularity?
No, the Event Horizon is outside the singularity.The singularity probably has no surface as it is an infinitesimal point.
What phrase has been used to describe the event horizon in black holes?
The phrase commonly used to describe the event horizon in black holes is "point of no return."
What event in earths past helped shape New York's land?
Ice age
Do meteorites have diamonds?
Yes, some meteorites contain diamonds. These diamonds are formed under extreme pressure and temperature conditions during the impact event that creates the meteorite. However, diamonds in meteorites are usually microscopic in size.
