At the start of the Jurassic Period the breakup of the supercontinent Pangaea continued and by the end of the period the separation of the continents […]
are the middle child they are between sedimentary and igneous. There is no sharp line where suddenly turn into metamorphic and metamorphic turn into igneous just […]
In many ways. All lines of Longitude are Great Circle lines which means that coupled with their opposite one (Latitude 75 and Latitude 255 for example) […]