Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ha Long Bay' has mentioned 'Holocene' in the following places:
Occurrence Sentence Text Source
The present Hxe1xbaxa1 Long Bay, in fact, appeared after the Middle Holocene maximum transgression, leaving ultimate zone of lateral undercutting in the limestone cliffs bearing many shells of oysters, having the 14C age as 2280 to >40,000 y. BP.
The dominated uplift movement of neotectonic and recent tectonic influenced deeply on topography of this area, and the present landscape of sea-islands was formed around 7 or 8 thousand years ago by the sea invasion during Holocene transgression begun at about 17-18 thousand years ago.
Particularly from the Holocene time, from about 11,000 years ago Cat Ba - Ha Long area has much archaeological evidence connecting variations in sea levels with the development of ancient cultures such as the Soi Nhu and Ha Long cultures.
Some marine notch caves had been not formed at present sea level, but old sea levels related to sea level changes in Holocene transgression, event to Pleistocene sea levels.
early Holocene Epoch The islands of today's Ha Long Bay are basically remnants of these mountains, flooded.
9000xe2x80x935000 BC Holocene Epoch This period is notable for the advance of the sea.
beginning of the late Holocene Epoch The level of the water once again increased, forming a marshy floor of canals and streams, and creating the water marks that can be seen on the stone cliffs of today.