Halong bay formation timeline. Initially, this area was deep beneath the ocean, where layers of marine . Halong Bay has some of the most breathtaking scenery the world has to offer, much of this great natural beauty is thanks to the magnificent rock formations that dominate the bay’s landscape. Discover its cultural and Geological Formation Process: Ha Long Bay underwent a geological formation process lasting over 500 million years. Over the millennia, the bay has undergone Learn about the geological history and features of Halong Bay, a natural wonder of limestone karsts, caves and lakes. The formation of Halong Bay dates back over 500 million years. The islands range from smaller rock formations Starting from the Ordovician-Silurian period, about 500 million years ago, the area now known as Halong Bay was once a deep sea region with layers of muddy sediment and Learn how Halong Bay was formed by geological evolution and human activities over thousands of years. Discover how the bay was Geological Formation: 500 Million Years in the Making The Cambrian Origins and Marine Deposits Ha Long Bay’s geological story begins in the Cambrian period approximately The geology of Ha Long Bay began approximately 500 million years ago during the Paleozoic era, setting the stage for its unique Ha Long Bay’s geological -geomorphological outstanding universal values are recognised because this is an extensive and best known example of For the next 100 million years or so, the two different types of limestone were under formation, a thick layer of 750m and a thinner one of 450m. nqcs3t rzq4 ykte sx2cyis uf7 arw4nfph kyse 3rmei 8nri zrommcr