مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Verion

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

video

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

sound

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Version

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View:

858
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Download:

363
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Cites:

Information Journal Paper

Title

PLANKTONIC FORAMINIFERAL BIOSTRATIGRAPHY AND FAUNAL TURNOVER ACROSS THE CRETACEOUS-TERTIARY BOUNDARY IN SOUTHWESTERN IRAN

Pages

  139-149

Abstract

 The Kabirkuh section in the Ilam Province of southwestern Iran contains one of the most complete Late Maastrichtian to early Danian sequences similar to those known from the eastern Tethys realm. The Cretaceous-Tertiary boundary is marked by a 1-2 cm thick kidney-red shale in the uppermost Gurpi Formation. All Late Maastrichtian planktonic foraminiferal biozones CF1 to CF4 (equivalent to the Abathomphalus mayaroensis zone) and Danian zones P0 (Parvularugo globigerina extensa), Pla (Parvularugoglobigerina eugubina) and Parasubbotina pseudobulloides are present. Faunal studies show that all but six of the Cretaceous species identified (22 of 29 species) disappeared at or below the K-T boundary in zone CF1 (P. hantkeninoides). Another 6 species (Heterohelix globulosa, H. navarroensis, H. dentata, Hedbergella monmouthensis, H. holmdelensis, Guembelitria cretacea) appear to have survived into the early Danian. Early disappearances appear to be environmentally controlled. Coarse ornamented species with small populations disappeared first, whereas small species with little or no ornamentation and generally large populations tended to survive after the environment changing. This indicates a pattern of gradual and selective faunal turnover in planktonic foraminifera during the latest Maastrichtian and into the earliest Danian that is similar to that observed at the El Kef stratotype of Tunisia, as well as K-T sequences in Egypt, Italy, Spain and Mexico.

Cites

  • No record.
  • References

  • No record.
  • Cite

    APA: Copy

    GHOURCHAEI, SH., GHASEMINEZHAD, EBRAHIM, DARVISHZAD, B., & KELLER, G.. (2007). PLANKTONIC FORAMINIFERAL BIOSTRATIGRAPHY AND FAUNAL TURNOVER ACROSS THE CRETACEOUS-TERTIARY BOUNDARY IN SOUTHWESTERN IRAN. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, 18(2), 139-149. SID. https://sid.ir/paper/84090/en

    Vancouver: Copy

    GHOURCHAEI SH., GHASEMINEZHAD EBRAHIM, DARVISHZAD B., KELLER G.. PLANKTONIC FORAMINIFERAL BIOSTRATIGRAPHY AND FAUNAL TURNOVER ACROSS THE CRETACEOUS-TERTIARY BOUNDARY IN SOUTHWESTERN IRAN. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN[Internet]. 2007;18(2):139-149. Available from: https://sid.ir/paper/84090/en

    IEEE: Copy

    SH. GHOURCHAEI, EBRAHIM GHASEMINEZHAD, B. DARVISHZAD, and G. KELLER, “PLANKTONIC FORAMINIFERAL BIOSTRATIGRAPHY AND FAUNAL TURNOVER ACROSS THE CRETACEOUS-TERTIARY BOUNDARY IN SOUTHWESTERN IRAN,” JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, vol. 18, no. 2, pp. 139–149, 2007, [Online]. Available: https://sid.ir/paper/84090/en

    Related Journal Papers

    Related Seminar Papers

  • No record.
  • Related Plans

  • No record.
  • Recommended Workshops






    Move to top