horst
Definition
Noun: A horst is a raised block of the Earth's crust that lies between two parallel faults. It is formed by tectonic forces that cause the crust to be uplifted relative to the surrounding land, which has moved downward along the faults.
Usage
The term is used in geology and earth sciences to describe a specific structural landform. * The mountain range is a classic example of a horst, bounded by normal faults on either side. * Geologists studied the horst to understand the region's tectonic history.
Advanced Usage
- Horst and graben: This is a common paired term in structural geology. A horst (uplifted block) is typically adjacent to a graben (down-dropped block), forming a characteristic pattern in extensional tectonic environments.
- The Basin and Range Province is characterized by a series of horst and graben structures.
Variants and Related Words
- Graben (noun): A depressed block of the Earth's crust bordered by parallel faults. It is the structural opposite of a horst.
Synonyms
- Uplifted block
- Tectonic block (when specified as being raised)
Different Meanings
The word "horst" has no other common meanings in general English. It is a specialized geological term.
Noun
-
a ridge of the earth's crust that has been forced upward between two faults and so is higher than the surrounding land
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