Jahangir

Sedimentary rocks in Pakistan range in age from Precambrian to Miocene i. e from oldest to youngest on the geological time scale form 542 million years to latest. Luckily for geoscientists all of them are exposed in different parts of the country. Lithologically they constitute sandstone, limestone, shale and mixed lithologies of them all. These rocks are exposed all along the mountain ranges from Islamabad in north to Karachi in the south. Igneous rocks are exposed north of Peshawar or only at Nagarparker in the southeastern corner of the country.You better study ‘Stratigraphy and historical geology of Pakistan' by Kazmi and Abbasi (2008), which will provide you a full knowledge about the rocks in Pakistan. ‘Geology and tectonics of Pakistan' by Kazmi and Jan (1997) also gives details of distribution of ores and minerals in different parts of the country. Names [de] Mergel [en] marl Description Marl is a sedimentary rock made of clay and limestone, which belongs to the f amily of pelitic rocks (clays