How the sea shell fossils get top of the mountains up to 1300 feet?

Answer 1

Marine fossils form when creatures die and sink to the bottom where there is little oxygen, and are covered with sediment. If sediment continues to accumulate, after many years its weight will crush the deposit, and in combination with well known chemical processes, can cement it into sandstone. Later, if the sea floor it lifted by any of a number of (again, well understood) geological processes, what was once the sea floor can become part of a mountain. Such a mountain can form in a few million years, where fossils have been forming for 3 BILLION years.

Answer 2

Sea shell fossils found at high elevations on mountains are there because the Earth's crust is constantly shifting and uplifting due to tectonic plate movements. Over millions of years, sedimentary layers containing sea shells can be lifted and eroded to form mountains, bringing the sea shell fossils to great heights.