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Trang chủTừ điểnDdunite

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dunite

A coarse-grained igneous rock consisting almost entirely of olivine.
Danh từ

This term is a highly specialized geological descriptor used primarily in petrology to identify a specific type of ultramafic rock. It carries a neutral, scientific connotation and is almost exclusively found in academic papers, geological surveys, or textbooks rather than in general conversation.

As a mass noun referring to a mineral composition, it is typically treated as uncountable. When referring to specific geological occurrences or samples, it remains uncountable, requiring partitive phrases such as a sample of dunite or a layer of dunite to denote individual units.

Ý nghĩa

Danh từ

A coarse-grained igneous rock consisting almost entirely of olivine.

The geologist identified a large deposit of dunite in the ultramafic complex.

Ví dụ

The sample is a classic example of dunite due to its high olivine content.

The sample is a classic example of dunite due to its high olivine content.

Trivia

Look at this outcrop of dunite over here.

Look at this outcrop of dunite over here.

Dunite often forms through the process of magmatic differentiation.

Dunite often forms through the process of magmatic differentiation.

School Life

I wonder if this layer is actually dunite or just a very olivine-rich peridotite.

I wonder if this layer is actually dunite or just a very olivine-rich peridotite.

The geologist identified the rock as dunite under the microscope.

The geologist identified the rock as dunite under the microscope.

School Life

Large bodies of dunite can be found in certain ophiolite complexes.

Large bodies of dunite can be found in certain ophiolite complexes.

History

This dunite specimen has a distinct greenish hue.

This dunite specimen has a distinct greenish hue.

Is the dunite layer consistent throughout the entire intrusion?

Is the dunite layer consistent throughout the entire intrusion?

The crustal section revealed a thick sequence of dunite and harzburgite.

The crustal section revealed a thick sequence of dunite and harzburgite.

Từ liên quan

peridotiteolivinemagmalavamantleigneousultramaficmaficrockmineralgeologypetrologyintrusionplutoncumulatecrystalcrystallizationsilicatemagnesiumironoxygensiliconpyroxenegarnetspinelchromiteserpentineserpentinizationweatheringmetamorphismlithosphereasthenospherecrustvolcanismbasaltgabbrokimberlitekomatiiteharzburgitemagmaticfractionationmeltsolidusliquiduspressuretemperaturedensityisostasytectonicssubductionobductionophiolitexenolithmatrixgraintexturephaneriticaphaniticporphyriticmineralogygeochemistryelementisotopestratigraphyoutcropbedrock
Cập nhật lần cuối: May 2026Báo lỗi