A New Theory of the Earth the flood. He asserted that the Earth was originally a comet, which God formed from its initial "chaos and void" into a habitable planet. He also argued that the flood itself was caused when the Earth passed through the tail of a comet, which, it was known by that time, are composed largely of water. His analysis was very detailed, and similar ideas were promoted in the 1960s by other creationists postulating causes for the global flood, along with similarity to the ideas of Immanuel Velikovsky. However, many of them are in direct conflict with contemporary scientific understandings; and comets
Sinkhole through these volcanic deposits and mechanically washed fine volcanic materials out of them, then progressively eroded and removed coarser materials. Eventually, these underground voids became large enough that their roofs collapsed to create large holes. Some of the largest sinkholes in the world are: Sinkhole A sinkhole, also known as a cenote, sink, sink-hole, swallet, swallow hole, or doline (the different terms for sinkholes are often used interchangeably), is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processes—for example, the chemical dissolution of carbonate rocks or