THE CAUSE OF BIOMASS EXTINCTION AT THE FRASNIAN-FAMENNIAN BOUNDARY, THE KERMAN PROVINCE SOUTHEASTERN, CENTRAL IRAN

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DASTANPOUR M.; AFTABI A.

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Journal: Journal of Sciences, Islamic Republic of Iran Year:2002 | Volume:13 | Issue:1 Page(s): 45-49

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Title

THE CAUSE OF BIOMASS EXTINCTION AT THE FRASNIAN-FAMENNIAN BOUNDARY, THE KERMAN PROVINCE SOUTHEASTERN, CENTRAL IRAN

Author(s)

DASTANPOUR M. | AFTABI A. | Issue Writer Certificate

Keywords

DEVONIAN; EXTINCTION; GEOCHEMICAL

Abstract

About 35 samples were collected from lower and upper parts of the proposed Frasnian-Famennian boundary in three sections of Upper Devonian marine sediments of the Kerman province. The biostratigraphical and geochemical studies indicate that about 45% extinction of brachiopods probably caused by the Frasnian-Famennian bioevents, which is slightly higher than thr rate of Devonian- Carboniferous extinction elsewhere. The results of isotopic carbon and oxygen isotope analysis (δ 13C%0 VPDB and δ 10O %VPDB) show a sudden decrease at the proposed Frasnian-Famennian extinction boundary which is followed by positive values above this horizon. The negative excursion may indicate a biomass extinction due to either a meteorite impact or decay of organic matter. The isotopic variations are correlated with those of faunal changes and their extinctions in the area.

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APA: Copy

DASTANPOUR, M., & AFTABI, A.. (2002). THE CAUSE OF BIOMASS EXTINCTION AT THE FRASNIAN-FAMENNIAN BOUNDARY, THE KERMAN PROVINCE SOUTHEASTERN, CENTRAL IRAN. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, 13(1), 45-49. SID. https://sid.ir/paper/542271/en

Vancouver: Copy

DASTANPOUR M., AFTABI A.. THE CAUSE OF BIOMASS EXTINCTION AT THE FRASNIAN-FAMENNIAN BOUNDARY, THE KERMAN PROVINCE SOUTHEASTERN, CENTRAL IRAN. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN[Internet]. 2002;13(1):45-49. Available from: https://sid.ir/paper/542271/en

IEEE: Copy

M. DASTANPOUR, and A. AFTABI, “THE CAUSE OF BIOMASS EXTINCTION AT THE FRASNIAN-FAMENNIAN BOUNDARY, THE KERMAN PROVINCE SOUTHEASTERN, CENTRAL IRAN,” JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, vol. 13, no. 1, pp. 45–49, 2002, [Online]. Available: https://sid.ir/paper/542271/en

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