فهرست مقالات Microbiostratigraphy

• دسترسی آزاد مقاله
  • صفحه چکیده
  • متن کامل
  
  1 - Microbiostratigraphy of the Oligo-Miocene Asmari Formation, Kuh Siah Anticline (Izeh Basin), SW Iran
  Iraj Maghfouri Moghaddam Zahra Khanjai
  This research focusses on the biostratigraphy and paleoecological implications of the carbonatesof the Asmari Formation. The Asmari Formation is located in the Siah Kuhanticline of Izeh, Zagros Basin, SW Iran. It is of Late Oligocene (Chattian) - Early Miocene (Burdigal چکیده کامل

  This research focusses on the biostratigraphy and paleoecological implications of the carbonatesof the Asmari Formation. The Asmari Formation is located in the Siah Kuhanticline of Izeh, Zagros Basin, SW Iran. It is of Late Oligocene (Chattian) - Early Miocene (Burdigalian) age. In this stratigraphic section, the Asmari Formation overlies the Pabdeh Formation and underlies the Gachsaran Formation. It consists of cream-colored limestone intercalated with marl. 182 thin sections were prepared and the benthic foraminifera distribution analyzed. Examination of large benthic foraminifera from the 228 m-thick Asmari Formation led to the identification of 3 biozones: the Lepidocyclina- Operculina- Ditrupa Assemblage Zone, Miogypsina-Elphidium sp. Assemblage Zone and the Borelis melocurdica- Meandropsina iranica Assemblage Zone. پرونده مقاله
• دسترسی آزاد مقاله
  • صفحه چکیده
  • متن کامل
  
  2 - Biostratigraphy of the sediments of Talezang Formation in southwestern Lorestan
  Mehdi Safdari
  The Talezang Formation is especially extensively outcropped in southwestern Lorestan. It is lying conformably on the Amiran Clastic Formation and its upper boundary contacts the Kashkan Red Siltstone Formation. In the type section it is dated at Upper Paleocene to Middl چکیده کامل

  The Talezang Formation is especially extensively outcropped in southwestern Lorestan. It is lying conformably on the Amiran Clastic Formation and its upper boundary contacts the Kashkan Red Siltstone Formation. In the type section it is dated at Upper Paleocene to Middle Eocene and is composed of limestone ranging from moderate beddings to massive form. Limestones of the selected sections are mostly sandy with sandstone and shale interbeds. Miscellanea Miscella, Miscellanea Minauta, Kathina sp., Lockhartia sp., Gavelinella sp. are the typical fossils which are defined in the selected sections of this Formation. The proposed age for the formation is dated at the Upper Paleocene – Iberian. پرونده مقاله
• دسترسی آزاد مقاله
  • صفحه چکیده
  • متن کامل
  
  3 - Microbiostratigraphy of the Taleh-Zang Formation, Lorestan Basin
  Iraj Maghfouri Moghadam
  The Taleh-Zang Formation is a predominantly carbonate lithostratigraphic unit that crops out in Lorestan sedimentary basin, southwestern Iran . Lorestan sedimentary basin, formed as a foreland basin in Central Zagros, is characterized by a relatively continuous Cretaceo چکیده کامل

  The Taleh-Zang Formation is a predominantly carbonate lithostratigraphic unit that crops out in Lorestan sedimentary basin, southwestern Iran . Lorestan sedimentary basin, formed as a foreland basin in Central Zagros, is characterized by a relatively continuous Cretaceous to Miocene time. In this paper, the microbiostratigraphy of the Taleh- Zang Formation in seven measured stratigraphic sections (Taleh- Zang type section, Kialou, Veisian, Chenar, Ghalebi, Darabi and Chahr Zebr) are is discussed. In all sections, the lower and upper boundaries of the Taleh- Zang Formation with Amiran and Kashkan Formations are conformable. Microbiostratigraphic data mainly based on foraminifera indicate the Middle Paleocene to Late Paleocene for the Taleh- Zang Formation for Veisian and the Early to Late Paleocene at Ghalebi, Darabi and Chenar, the Middle Paleocene for For Chahr Z¹ebr, the Late Paleocene to the Middle Eocence at the type section and the Late Paleocene to Early Eocene at the Kialou section. پرونده مقاله