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Q: What layer of sandstone is 100 million years old?
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Where does the water for the Dakota Sandstone come from?

The Dakota Sandstone is a sedimentary rock formation that was deposited during the Cretaceous period, approximately 100 million years ago. The water necessary for the deposition of the sand grains in the Dakota Sandstone would have come from a variety of sources, including rivers, lakes, and coastal environments that existed in the region during that time.


What will happen to Saturn in 100 million years?

In 100 million years, Saturn's rings will completely disappear.


What types of strata rocks and fossils would've been found in West Virginia 100 million years ago?

West Virginia 100 million years ago would have been part of a shallow seaway, so you would find marine sedimentary rocks like limestone, sandstone, and shale. Fossils of marine life such as ammonites, bivalves, brachiopods, and possibly marine reptiles like mosasaurs might be discovered in these rocks.


Approximately how long does it take for coal to form?

100 Million years


What was Greece population 100 years ago?

-Greece was 10 million 100 years ago , now 10 million again -Turkey was 10 million 100 years ago (Antolia and istanbul not ottoman empire) now 78 million


What will North America look like 100 million years from now?

It is now known what North America look like 100 million years from now.


How old are coral?

100 million years (Estimate)


What is a backswimmers life span?

100 million years


What year was was 1.6 million years ago?

100


How old is the pleiades star clusters?

The Pleiades star cluster is estimated to be about 100 million years old.


How long have sloths been on earth for?

100 million years


Which continents moved apart during the time period 100 - 200 million years ago?

Pangea began to drift apart about 200 million years ago. Pangea split into two smaller continents: Gondwana and Laurasia. These continents lasted from about 200 million years ago to 100 million years ago.