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iridium

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Q: What is the rare element found in the tombstone layer of the earth?
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What is the earth's tombstone layer?

The term 'tombstone layer' is a colloquialism associated with an extinction event ~ 66 million years ago leading to the demise of the dinosaurs and about 70% of other life on earth. The layer is a thin (few inches) clay deposit containing iridium (a very rare element) at a level about 100 times its normal distribution in the earths crust. The layer has been positively linked to the Chicxulub impact crater discovered in the Yucatan Penisula, Mexico and credited with being the extinction event that ended in the mass extinction, thus the term 'tombstone layer'.


What elements are found in the layers of the earth?

The element which is found in the four layers of earth is hydrogen. There is a percentage of hydrogen in every layer of the earth.


Where can the thinnest layer of the earth's crust be found?

The thinnest layer of the Earth's crust can be found underwater.


The thinnest layer of the earth's crust can be found under where?

The thinnest layer of the Earth's crust can be found underwater.


Which layer of the earth is soil found?

The layer with soil is the lower mantle


What is the 5th most common element on the earth's outer layer?

rtr


Which layer of the earth is gold found in?

the crust


What layer of the earth is soil found?

Ground


Where is the ozone layer found on earth and why is it so important to all living thing?

The ozone layer is not found on the earth. Rather it is founded in the atmospheric layers.


What are the layers found in earth?

Crust, Mantle, Inner Layer, Outer Layer


What layer of Earth is the ozone layer found in?

The ozone layer is found in the stratosphere region of the atmosphere. It protects us from the UV radiations of the sun.


What layer can be found on the ozone of the earth atmosphere?

See "Where is the ozone layer found?" in the "Related questions" section below.