There are generally larger amounts of shale in the lower and upper parts of the Series. Single limestone beds are not continuous layers across the shale, but generally extend only for a few meters to ...

Our local limestone layers reflect times of relative prosperity for the wide variety of marine invertebrates living in a warm, shallow sea that covered much of North America. However, this prosperity ...

The beginning layers are bound to look a bit wonky ... This textured and translucent paint is created from heated limestone, ...

These insects aren’t there for the scenery, but because of the diversity of flowering plants which grow in the limestone. But ...

A demonstration of the features formed by water drainage in limestone areas, both at the surface and underground. Permeable and impermeable layers of rock in the Malham area give rise to ...