کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4463268 1313619 2016 3 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Interpretation of “fungal spikes” in Permian-Triassic boundary sections
ترجمه فارسی عنوان
تفسیر "خوشه های قارچی" در بخش مرزی پرمین ـ تریاس
کلمات کلیدی
رویداد انقراض پرمین/تریاس؛ رویداد قارچی. "سنبله قارچی". Reduviasporonites؛ آلودگی های اخیر
Permian/Triassic extinction event; “Fungal event”; “Fungal spike”; Reduviasporonites; Recent contamination
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


• “Fungal spikes”, associated with the PTB event, are controversially discussed.
• Reduviasporonites - key witness of this event - is probably of algal origin.
• Erroneously determined Reduviasporonites probably represent recent contamination.

Abundant occurrences of the palynomorph Reduviasporonites have been described as “fungal spike” from several Permian/Triassic boundary sections and related to the supposed destruction of woody vegetation by fungal pathogens during the Permian/Triassic extinction event. The biological affinity of this taxa considered by some authors of fungal origin is still controversially discussed since there is geochemical evidence that it is most probably related to algae. The abundance peak of this species is used by some authors as a stratigraphic marker, notably in terrestrial Permian/Triassic boundary sections from South China. Illustrations of the reported fungal remains however show potentially erroneous taxonomic identification of Reduviasporonites, and, based on differences in thermal maturation, they may represent recent contamination. Here Reduviasporonites chalastus of Early Triassic age is illustrated together with recent fungal remains originating from a strongly weathered and otherwise barren sample from a Middle Triassic section.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Global and Planetary Change - Volume 144, September 2016, Pages 48–50
نویسندگان
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