At the time of the flood of Noah, God made the Earth’s outer mantle crack like an egg shell. These cracks or fault lines divided the Earth’s outer mantle into pieces that we now call tectonic plates. When God cracked the Earth open, an enormous volume of water from subterranean reservoirs was released onto the Earth’s surface, The Earth was decompressed and this caused the Earth to implode slightly upon itself as the water inside escaped onto the surface. The Earth’s outer mantle buckled in places creating mountain ridges and valleys. The Earth’s surface was remodeled in the ensuing months as layer upon layer of sediment formed. All the creatures of the Earth and it’s foliage were buried and became fossils (Except for those in Noah’s Ark). As the Earth contracted in volume, the diameter and circumference of the Earth did likewise. The resultant forces caused the Earth’s outer layers to buckle up and down. Tectonic plates moved towards each other overriding at the edges creating mountain ridges along fault lines. Water ran off into the valleys forming oceans and cutting enormous gorges in the soft newly formed sedimentary rock (eg the Grand Canyon). The Earth, which had been created formless, now had mountains and valleys and much larger oceans. Rain poured upon the Earth and ice precipitated at it’s poles and an Ice Age followed.