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 intermittent ...
(source: GD NRW) The drilling is part of the comprehensive nationwide exploration and drilling program aimed at investigating the “Kohlenkalks” limestone layer in order to further explore the ...
They also found a sharp increase in material from a common type of asteroid mixed in with limestone layers formed during the same period. According to Tomkins and his colleagues, the craters and ...