Tag Archives: sedimentary…
Evolution of Alpine panorama recorded by sedimentary rocks
Rock avalanches and torrents began to type V-shaped valleys within the Swiss Alps roughly 25 million years in the past. This panorama contrasts to the flat and hilly surroundings, which characterised the Alps just a few thousands and thousands of … Continue reading
gorgeousgeology: Shale is a fine-grained, clastic sedimentary…
gorgeousgeology: Shale is a fine-grained, clastic sedimentary rock composed of mud that is a mix of flakes of clay minerals and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite. The ratio of clay to other minerals is … Continue reading