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单词 eustasy
释义

Definition of eustasy in English:

eustasy

noun ˈjuːstəsiˈjustəsi
mass noun
  • A change of sea level throughout the world, caused typically by movements of parts of the earth's crust or melting of glaciers.

    海面升降,海面进退

    Example sentencesExamples
    • Such changes are not as rapid as those associated with glacio and geoidal eustasy but over a prolonged time period (perhaps longer than the Quaternary) they could have had a major impact on the level of the world's oceans.
    • Moreover, glacial eustasy is rejected because of the lack of evidence for widespread glaciation at the appropriate stratigraphic level and because the required kilometre-scale drawdown far exceeds that expected through glaciation.
    • Within this rhythm, alternations between PDF and WDF units record the interplay between sediment supply, basin subsidence, climate and eustasy, which caused repeated minor progradational and retrogradational rhythms.
    • Such variables, on a shallow marine carbonate platform developed upon a passive margin, are essentially represented by eustasy, climate, subsidence and sedimentation rate.
    • Coastal ecosystems have been forced to migrate staggering distances since the waning of Pleistocene glaciers began to drive the postglacial rise in global sea level, termed eustasy by geologists.

Derivatives

  • eustatic

  • adjective juːˈstatɪkjuˈstædɪk
    • Relating to or denoting changes in sea level throughout the world.

      eustatic sea-level fluctuations
      Example sentencesExamples
      • Surprisingly, the most positive carbon isotope values correspond to the most positive oxygen isotope values (and hence lowest palaeotemperatures) and to a period characterized by inferred eustatic sea-level fall.
      • Higher-latitude boreal sections have received substantially less attention because of both their relative inaccessibility and the reported absence of Late Permian strata attributed to a major eustatic sea-level fall.
      • Nature of Quaternary sea-level changes A detailed record of Quaternary eustatic sea-level changes has been derived from studying oceanic cores taken at selected sites where there is a continuous record of sedimentation.

Origin

1940s: back-formation from eustatic, coined in German from Greek eu 'well' + statikos 'static'.

Definition of eustasy in US English:

eustasy

nounˈyo͞ostəsēˈjustəsi
  • A change of sea level throughout the world, caused typically by movements of parts of the earth's crust or melting of glaciers.

    海面升降,海面进退

    Example sentencesExamples
    • Such variables, on a shallow marine carbonate platform developed upon a passive margin, are essentially represented by eustasy, climate, subsidence and sedimentation rate.
    • Moreover, glacial eustasy is rejected because of the lack of evidence for widespread glaciation at the appropriate stratigraphic level and because the required kilometre-scale drawdown far exceeds that expected through glaciation.
    • Such changes are not as rapid as those associated with glacio and geoidal eustasy but over a prolonged time period (perhaps longer than the Quaternary) they could have had a major impact on the level of the world's oceans.
    • Coastal ecosystems have been forced to migrate staggering distances since the waning of Pleistocene glaciers began to drive the postglacial rise in global sea level, termed eustasy by geologists.
    • Within this rhythm, alternations between PDF and WDF units record the interplay between sediment supply, basin subsidence, climate and eustasy, which caused repeated minor progradational and retrogradational rhythms.

Origin

1940s: back-formation from eustatic, coined in German from Greek eu ‘well’ + statikos ‘static’.

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更新时间:2024/10/19 15:37:50