Definition

Noun: A sedimentary rock composed primarily of calcium carbonate (CaCO₃), often formed from the skeletal fragments of marine organisms or by chemical precipitation. It is a key material in construction, agriculture, and industry.

Usage Examples

• Noun:
  • Ngọn núi này được cấu tạo chủ yếu từ đá vôi. (This mountain is composed mainly of limestone.)
  • Đá vôi được dùng để sản xuất xi măng. (Limestone is used to produce cement.)
  • Các hang động đá vôi thường có nhũ đá rất đẹp. (Limestone caves often have very beautiful stalactites.)

Advanced Usage

• "karst đá vôi": limestone karst, a topography formed from the dissolution of soluble rocks such as limestone.
  • Vịnh Hạ Long nổi tiếng với cảnh quan karst đá vôi. (Ha Long Bay is famous for its limestone karst landscape.)

Variants and Related Words

• Đá vôi hóa (n): limestone, the process of turning into limestone or being impregnated with calcium carbonate.
• Đá phấn (n): chalk, a soft, white, porous form of limestone.
• Đá hoa cương / đá granite (n): granite, a common contrasting rock type (igneous) often confused with limestone.

Synonyms

• Calcium carbonate rock: A technical term describing its primary chemical composition.
• Calcareous rock: A general term for rocks rich in calcium carbonate.

Related Terms

• Vôi (n): lime, the product obtained by calcining (burning) limestone.
  • Đá vôi được nung nóng để tạo ra vôi sống. (Limestone is heated to produce quicklime.)
• Thạch nhũ (n): stalactite/stalagmite, formations commonly found in limestone caves.

noun

1. limestone