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单词 phreatomagmatic
释义

Definition of phreatomagmatic in English:

phreatomagmatic

adjective frɪˌatə(ʊ)maɡˈmatɪkfrēˌadəmaɡˈmadik
Geology
  • (of a volcanic eruption) in which both magmatic gases and steam from groundwater are expelled.

    Example sentencesExamples
    • A similar degree of compositional variation between pyroclast glasses of phreatomagmatic pyroclastic rocks and intruding dykes has been recognized from the vent remnant of Szigliget, western Hungary.
    • These are commonly present as pyroclastic deposits rather than lava because their early arrival favours interaction with groundwater to produce phreatomagmatic eruptions, and/or because they have higher volatile contents.
    • After 1 August phreatomagmatic activity resumed and continued at a gradually diminishing rate until 5 August.
    • These rafts were originally surface phreatomagmatic deposits, which were probably wet when they slumped into the vent complex.
    • Mud and sand volcanoes are positive topographic features that have many of the aspects of normal phreatomagmatic volcanism resulting from explosive interaction between hot magma and water.

Origin

1960s: from Greek phrear, phreat- ‘a well’ + magmatic (see magma).

 
 

Definition of phreatomagmatic in US English:

phreatomagmatic

adjectivefrēˌadəmaɡˈmadik
Geology
  • (of a volcanic eruption) in which both magmatic gases and steam from groundwater are expelled.

    Example sentencesExamples
    • These are commonly present as pyroclastic deposits rather than lava because their early arrival favours interaction with groundwater to produce phreatomagmatic eruptions, and/or because they have higher volatile contents.
    • A similar degree of compositional variation between pyroclast glasses of phreatomagmatic pyroclastic rocks and intruding dykes has been recognized from the vent remnant of Szigliget, western Hungary.
    • After 1 August phreatomagmatic activity resumed and continued at a gradually diminishing rate until 5 August.
    • These rafts were originally surface phreatomagmatic deposits, which were probably wet when they slumped into the vent complex.
    • Mud and sand volcanoes are positive topographic features that have many of the aspects of normal phreatomagmatic volcanism resulting from explosive interaction between hot magma and water.

Origin

1960s: from Greek phrear, phreat- ‘a well’ + magmatic (see magma).

 
 
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更新时间:2024/12/23 9:51:41