With difference to drainage and economic importance if we talk about northern mountain ranges of Pakistan then they are made of igneous rocks which are made up of lave and such rocks are full of minerals such as ruby ,zircon ,emerald and many other gemstones and they contribute in making your gem industry and economy better and if we talk about the western mountain area then they are all sedimentary rocks and such rocks are rich in oil and gas .So, that's the reason that we have oil and gas well in the western range more .