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During glacial periods, the sea level falls, and great expanses of the Sunda Shelf are exposed as a marshy plain. The rise of sea level during a meltwater pulse 14,600 to 14,300 years Before Present was as much as 16 meters within 300 years. [6]
The Sahul Shelf and the Sunda Shelf today. The area in between is called "Wallacea"Sundaland [1] (also called Sundaica or the Sundaic region) is a biogeographical region of Southeast Asia corresponding to a larger landmass that was exposed throughout the last 2.6 million years during periods when sea levels were lower.
During the glacial period, glacier formation was accompanied by a lowering in the sea level, which likely helped expose the now submerged continental shelf. While the majority of the Archipelago was covered in ice, these outer coast areas where continental shelf was exposed were very likely coastal refugia for a variety of plants and animals.
The island of Borneo is located on the Sunda Shelf, ... Interstadial records of the last glacial period at Pantai Remis, Malaysia. B Kamaludin, BY Azmi - Journal of ...
The Sunda Shelf links Borneo, Bali, Java, and Sumatra underwater to the mainland of southeastern Asia, while the Sahul Shelf connects Australia to New Guinea and their adjacent islands. [ 9 ] During the Pleistocene, when the ocean levels were up to 120 metres (390 ft) lower , islands became connected, but never uniting Asia with Australia.
A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water, known as a shelf sea. Much of these shelves were exposed by drops in sea level during glacial periods. The shelf surrounding an island is known as an "insular shelf."
Map of Sahul and Sunda Continental shelves of Western Australia, showing the Sahul Shelf in the northeast. More broadly defined, the Sahul Shelf extends southwest to encompass the Rowley Shelf. Geologically, the Sahul Shelf (/ s ə ˈ h uː l /) is a part of the continental shelf of the Australian continent, lying off the northwest coast of ...
The avian endemism has been shaped by the island's geological history. Borneo sits on a continental shelf. During glacial periods, when water levels were lower, Borneo was linked with other islands on the shelf and with the Malay Peninsula in a large landmass known as Sundaland. This allowed bird species to move freely throughout the region ...