![]() ![]() ![]() These layers were originally formed from sand deposited in beaches, estuaries and rivers, which was then buried and compressed into rock. The Singhbhum craton, an ancient piece of continental crust that makes up the eastern parts of the Indian subcontinent, contains several formations of ancient sandstone. By scouring the rock record for signs of ancient beach deposits, geologists can study episodes of continent formation that happened in the distant past. These processes, which we can observe in action during a trip to the beach today, have been operating for billions of years. Wind and rain break rocks down into grains of sand, which are transported downstream by rivers and accumulate along coastlines to form beaches. When continents rise above the oceans they start to erode.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |