Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Ha Long Bay' has mentioned 'Karst' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| The evolution of the karst in this bay has taken 20 million years under the impact of the tropical wet climate. | WIKI |
| Contents 1 Etymology 2 Overview 2.1 Location 2.2 Climate 2.3 Population 3 History 3.1 Soi Nhu culture (16,000xe2x80x935000 BC) 3.2 Cai Beo culture (5000xe2x80x933000 BC) 3.3 Hxe1xbaxa1 Long culture (2500xe2x80x931500 BC) 3.4 Classical period 4 Geology and geomorphology 4.1 History of tectonics 4.2 Karst geomorphology value 4.3 Timeline of geologic evolution 5 Ecology 5.1 Environmental damage 6 Awards and designations 7 In literature 7.1 Ancient tales 8 See also 9 References 10 External links | WIKI |
| All these island lakes occupy drowned dolines within fengcong karst. | WIKI |
| Karst formations of Hxe1xbaxa1 Long Bay. | WIKI |
| The limestone karstic geomorphology of the bay was developed since Miocene, especially the cone-shaped hills (fengcong), or isolated high limestone karst towers (fenglin) with many remnants of old phreatic caves, old karstic foot caves, marine notch caves form magnificent limestone karst landforms as unique on the world. | WIKI |
| Karst geomorphology value[edit] | WIKI |
| Due to a simultaneous combination of ideal factors such as thick, pale, grey, and strong limestone layers, which are formed by fine-grained materials; hot and moist climate and slow tectonic process as a whole; Ha Long Bay has had a complete karst evolution for 20 million years. | WIKI |
| There are many types of karst topography in the bay, such as karst field. | WIKI |
| Hxe1xbaxa1 Long Bay is a mature karst landscape developed during a warm, wet, tropical climate. | WIKI |
| The sequence of stages in the evolution of a karst landscape over a period of 20 million years requires a combination of several distinct elements including a massive thickness of limestone, a hot wet climate and slow overall tectonic up lift. | WIKI |
| The process of karst formation is divided into five stages, the second of which is the formation of the distinctive do line karst. | WIKI |
| This is followed by the development of fengcong karst, which can be seen in the groups of hills on Bo Hon and Dau Be Inland. | WIKI |
| Fenglin karst is characterised by steep separate towers. | WIKI |
| The karst dolines were flooded by the sea, becoming the abundance of lakes that lie within the limestone islands. | WIKI |
| For example, Dau Be island at the mouth of the Bay has six enclosed lakes including those of the Ba Ham lakes lying within its fengcong karst. | WIKI |
| The Bay contains examples of the landscape elements of fengcong, fenglin and karst plain. | WIKI |
| Within Hxe1xbaxa1 Long Bay, the main accessible caves are the older passages that survive from the time when the karst was evolving though its various stages of fengcong and fenglin. | WIKI |
| Foot caves are a ubiquitous feature of karst landscapes which have reached a stage of widespread lateral undercutting at base level. | WIKI |
| The third group is the marine notch caves that are a special feature of the karst of Hxe1xbaxa1 Long Bay. | WIKI |
| The karst landscape of Hxe1xbaxa1 Long Bay is of international significance and of fundamental importance to the science of geomorphology. | WIKI |
| If these karst landscapes are broadly compared in terms of their height, steepness and number of their limestone towers, Ha Long Bay is probably second in the entire world only to Yangshou, in China. | WIKI |
| There are other areas of submerged karst towers which were invaded by the sea, but none is as extensive as Ha Long Bay. | WIKI |
| Covering an area of 43,400 ha and including over 1600 islands and islets, most of which are uninhabitated and unaffected by humans, it forms a spectacular seascape of limestone pillars and is an ideal model of a mature Karst landscape developed during a warm and wet tropical climate. | UNESCO |
| The outstanding value of the property is centered around the drowned limestone karst landforms, displaying spectacular pillars with a variety of coastal erosional features such as arches and caves which form a majestic natural scenery. | UNESCO |
| The repeated regression and transgression of the sea on the limestone karst over geological time has produced a mature landscape of clusters of conical peaks and isolated towers which were modified by sea invasion, adding an extra elemant to the process of lateral undercutting of the limstone towers and islands. | UNESCO |
| Criterion (viii): As the most extensive and best known example of marine-invaded tower karst in the world Ha Long Bay is one of the worldxe2x80x99s most important areas of Fengcong (clusters of conical peaks) and Fenglin (isolated tower features) karst. | UNESCO |
| Abundant lakes, occupying drowned dolines, are one of the distinctive features of the Fencong karst, with some appearing to be tidal. | UNESCO |
| The property also displays the full range of karst formation processes on a very large scale and over a very long period of geological time, possessing the most complete and extensive exzample of its type in the world and providing a unique and extensive reservoir of data for the future understanding of geoclimatic history and the nature of karst processes in a complex environment. | UNESCO |