An error margin of 2-5 % has been achieved on younger Mesozoic rocks.

They were, however, heavily eroded due to their height (up to 4 km) and were later covered over by Mesozoic rocks.

Most of the Mesozoic rocks are missing from the Caballo geological history.

These are mainly Mesozoic sedimentary rocks, most of them limestones.

The Harz was partly thrust over the layers of Mesozoic rock to the north.

Mesozoic rocks are between 245 and 64 million years old.

The summit is composed of Mesozoic metavolcanic rock - lava lifted and melted by rising granite.

The geomorphological structure is varied and has crystalline, Mesozoic and volcanic rocks.

A considerable part of the range is made of various Mesozoic rocks.

No dinosaur fossils are known from Washington, although the presence of Mesozoic rocks means that they may be found there in the future.