tufa

A noun referring to a type of rock, either a soft, porous limestone formed from calcium carbonate deposits near mineral springs, or a hard volcanic rock made of compacted volcanic ash.

• 🌐اسم يشير إلى نوع من الصخور: إما حجر جيري مسامي ناعم يتكوّن من ترسّبات كربونات الكالسيوم قرب الينابيع المعدنية، أو صخر بركاني صلب ناتج عن تصلّب الرماد البركاني المضغوط.

1. Calcareous tufa C2 formal

   A soft, porous sedimentary rock formed by the precipitation of calcium carbonate from mineral-rich spring water.

   • The ancient Romans used tufa extensively in their architecture.
   • Tufa formations can be seen around hot springs in the region.
   • The porous nature of tufa makes it lightweight but not very durable.

   🌐طف كلسي

   المرادفات: calc-tufa

2. Volcanic tuff C2 formal

   A hard, compacted rock formed from volcanic ash and other pyroclastic materials.

   • The cliffs were composed of volcanic tufa from ancient eruptions.
   • Many buildings in the region are constructed from local tufa stone.
   • Geologists studied the tufa layers to understand the volcano's history.

   🌐طف بركاني

   المرادفات: tuff

• tufas plural form
• tufas' possessive plural form
• tufa's possessive singular form