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单词 diachronism
释义

Definition of diachronism in English:

diachronism

noun dʌɪˈakrənɪz(ə)mdīˈakrəˌnizəm
mass nounGeology
  • The occurrence of a feature or phenomenon in different geological periods.

    Example sentencesExamples
    • A typical example of diachronism would be a sequence of beds deposited in a shallow sea that gradually encroaches upon the land.
    • Comparison of the thickness of lithostratigraphic units between sites appeared problematic because of the apparent diachronism of the lithostratigraphic boundaries and of the lateral changes of porosity.
    • This is interpreted to reflect both diachronism in fault reactivation and variable distance from source area to sub-basin, causing variable delays between basin-margin faulting and clastic deposition in the basin.
    • Therefore, this flexural model could provide an explanation for the above mentioned diachronism.
    • The diachronism could be due to discontinuities in the vertical record of fossils.

Derivatives

  • diachronous

  • adjective dʌɪˈakrənəsdaɪˈækrənəs
    Geology
    • (of a feature or phenomenon) occurring in different geological periods.

      key species are strongly diachronous across the region
      Example sentencesExamples
      • The scattered nature of the outcrop and the possibility of diachronous volcanism mean that all rocks grouped as Dokhan Volcanic Series may not be coeval.
      • Thirlwall proposed a diachronous end to magmatism from NW to SE across Scotland and NE England.
      • The parallel retreat of slopes through time in the Penck scheme means that the age of the pediplain is time-transgressive or diachronous, that is, the age varies across the surface of the pediplain.
  • diachronously

  • adverbdʌɪˈakrənəslidaɪˈækrənəsli
    Geology
    • It is during this interval that graptolitic shales are diachronously replaced by shelly, Hirnantia Fauna-bearing limestones, first in the shallower-water and later in the deeperwater portions of the Yangtze Platform.
      Example sentencesExamples
      • Despite their proximity, individual basins developed diachronously and did not share basin-bounding faults.
      • The total length of rifted margin was more than 25,000 km, suggesting a staggered climatic response to uplift as rifting progressed diachronously, somewhat like a zipper.
 
 

Definition of diachronism in US English:

diachronism

noundīˈakrəˌnizəm
Geology
  • The occurrence of a feature or phenomenon in different geological periods.

    Example sentencesExamples
    • A typical example of diachronism would be a sequence of beds deposited in a shallow sea that gradually encroaches upon the land.
    • Comparison of the thickness of lithostratigraphic units between sites appeared problematic because of the apparent diachronism of the lithostratigraphic boundaries and of the lateral changes of porosity.
    • This is interpreted to reflect both diachronism in fault reactivation and variable distance from source area to sub-basin, causing variable delays between basin-margin faulting and clastic deposition in the basin.
    • The diachronism could be due to discontinuities in the vertical record of fossils.
    • Therefore, this flexural model could provide an explanation for the above mentioned diachronism.
 
 
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更新时间:2024/12/24 7:34:40