Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Ha Long Bay' has mentioned 'Carbonate' in the following places:
Occurrence Sentence Text Source
Especially, the carbonate materials originated from organisms make up from 60-65% sedimentary content.
The surface sediments of coral reefs are mainly sand and pebbles of which the carbonate materials occupy for more than 90%.
At the small, but wonderfully beautiful beaches, the sand sediments may be dominated quartz or carbonate materials.