Platin Limestone
Sep22

Platin Limestone

Large straight-shelled cephalopods, trilobites and one of the first crinoids were common inhabitants of the warm shallow seas that covered our region during the Ordovician Period.

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Lamotte Sandstone
Sep22

Lamotte Sandstone

Some 550 million years ago large amounts of sand came from the North into our region. The sand formed vast sand flats which were swept by high tides. Strange creatures like Climactichnites crawled over the flats leaving trails that look like motorcycle tracks.

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Granite
Sep22

Granite

Around 1.4 billion years ago molten rock (Magma) was injected into the earth’s crust. Buried deep in the insolating crust of the earth the magma cooled slowly allowing time for crystals to grow and form coarsely crystalline granites. These granites can be seen at Elephant Rocks State Park and at Silver Mines in the Fredericktown, Missouri area. In Longview Farm Park, Granite lies about 3000 feet below the surface. Because of the...

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Rhyolite
Sep22

Rhyolite

1.5 billion years ago Missouri was a vast area of explosive volcanism. Volcanoes and fissures spewed forth upon the earth’s surface thick layers of fast cooling rhyolite lava, volcanic ash, and volcanic fragments. This material can be seen today as hard, blocky rocks in road cuts and on Taum Sauk Mountain about 80 miles South of St. Louis. At Longview Farm Park rhyolites lie about 2800 feet beneath the surface. Some very...

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