The stone floor supports beneath the Gulf floor, Tertiary period rocks Thai (65 million years ago, when up to 2.) the thickness of the sedimentary rocks of the Western Gulf of Thai will have a thickness less than the East in about 18000 years ago to the present day. Thai Gulf sea does not belong to the encroachments of the sea and back several times, is the coastline of the Thai nation during the end of the era of modern Diagnostics pass or stony scene (Pliestocene)
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