英语词汇“komatiite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

komatiite

/kəˈmatɪʌɪt

noun [mass noun] Geology

A magnesium-rich extrusive rock, typically with a characteristic texture of criss-crossing olivine crystals.This rhythmic layering is common within komatiite flows at Kambalda, and is inferred to reflect incremental emplacement by endogenous growth....

The nature and distribution of vesicles in thick komatiite flows indicates two stages of vesiculation.
Alternative origins include secondary influx due to devolatization, physical incorporation, and/or thermal incorporation of sediment resulting from komatiite lava flow on hydrous sediments.

Derivatives

komatiitic

adjective ...

Massive to pillowed tholeiitic basalt, komatiitic basalt and ultramafic rocks form a series of partly overlapping lensoidal bodies with typical sigmoidal outcrop patterns.
The Reliance flow fields and associated sills are considered to represent, respectively, the volcanic and subvolcanic phases of komatiitic sill-flow complexes, each about 100 km in diameter, scattered across the craton.
The widespread but discontinuous Reliance unit comprises a series of essentially discrete komatiitic flow fields that are submarine in most regions but partly emergent at Belingwe.

Origin

1960s: from Komati (the name of a river in southern Africa) + -ite¹.

单词	komatiite
释义	komatiite /kəˈmatɪʌɪt / noun [mass noun] Geology A magnesium-rich extrusive rock, typically with a characteristic texture of criss-crossing olivine crystals.This rhythmic layering is common within komatiite flows at Kambalda, and is inferred to reflect incremental emplacement by endogenous growth.... The nature and distribution of vesicles in thick komatiite flows indicates two stages of vesiculation. Alternative origins include secondary influx due to devolatization, physical incorporation, and/or thermal incorporation of sediment resulting from komatiite lava flow on hydrous sediments. Derivatives komatiitic adjective ... Massive to pillowed tholeiitic basalt, komatiitic basalt and ultramafic rocks form a series of partly overlapping lensoidal bodies with typical sigmoidal outcrop patterns. The Reliance flow fields and associated sills are considered to represent, respectively, the volcanic and subvolcanic phases of komatiitic sill-flow complexes, each about 100 km in diameter, scattered across the craton. The widespread but discontinuous Reliance unit comprises a series of essentially discrete komatiitic flow fields that are submarine in most regions but partly emergent at Belingwe. Origin 1960s: from Komati (the name of a river in southern Africa) + -ite¹.
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