are very common in the upper part. Dolomite forms less than 1% of the limestones of the lower part of the sequence, but more than 5% of those in the upper part. Photomicrographs of local limestone ...

The calcium carbonate precipitated out of the water and eventually solidified into limestone. Numerous marine organisms used the dissolved calcium carbonate in the seawater to form internal skeletons ...

Point Bar Features Larger fragments of limestone and weathered shale are common, as are individual fossils weathered out of their enclosing rocks. Cut Bank Features A close-up view of the cut bank ...

The specimen in question is an exquisite fossil of a gossamer-winged butterfly from the Isle of Wight. It is the only representative of its species ever found. Discovered in the Insect Limestone at ...

LANSING — When it comes to fossils ... state's abundant limestone and shale deposits, often eroding along shorelines, which ...