phiến thạch
Definition
- Noun:
- Schist: A type of metamorphic rock characterized by a foliated structure, meaning it can easily split into thin layers or sheets. This foliation is typically due to the parallel arrangement of platy minerals like mica.
Usage Examples
- Noun:
- Ngọn núi này chủ yếu được cấu tạo từ phiến thạch. (This mountain is primarily composed of schist.)
- Phiến thạch thường có bề mặt lấp lánh do chứa nhiều mica. (Schist often has a glittery surface due to its high mica content.)
Advanced Usage
- Technical/Geological Context: The term is used specifically in geology and earth sciences to describe a rock with a specific texture and mineral composition formed under medium to high-grade metamorphic conditions.
- Trong bản đồ địa chất, khu vực này được đánh dấu là phân bố chủ yếu phiến thạch. (On the geological map, this area is marked as having a primary distribution of schist.)
Variants and Related Words
- Đá phiến (Slate): A finer-grained, low-grade metamorphic rock that splits into very thin, flat sheets. It is related but different from schist.
- Gơnai (Gneiss): A high-grade metamorphic rock with a banded appearance, coarser than schist.
- Đá biến chất (Metamorphic rock): The general category of rocks formed by heat and pressure, which includes schist.
Synonyms
- Schist: The direct and most accurate English equivalent. There is no perfect common-language synonym, as it is a specific scientific term.
Related Phrases / Compound Terms (These are separate terms, not the target word itself)
- Dãy núi phiến thạch: A mountain range composed of schist.
- Phiến thạch mica: Mica schist, a common variety of schist rich in mica minerals.
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(địa lý) Schist
