Burdigalian ichnofabric from the Guri Member, Dezful Embayment, southwestern Iran

Autores/as

  • Mehdi Ghanavati Department of Earth Sciences, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran.
  • Iraj Maghfouri Moghaddam Department of Geology, Faculty of Science, Lorestan University, Lorestan, Iran.
  • Mohsen Aleali Department of Earth Sciences, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran.
  • Mehran Arian Department of Earth Sciences, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran.

DOI:

https://doi.org/10.4072/rbp.2023.2.04

Resumen

The carbonate strata of the Burdigalian Guri Member are located in the Dezful Embayment along the northern Persian Gulf shore. Ichnofabric analysis and paleoecology of the Guri Member in the Dezful Embayment are described by investigating three outcrop sections. The facies features of the Guri Member show a very shallow marine environment with high oxidation content. The Guri Member contains remarkably well-preserved specimens of Thalassinoides suevicus. It is mainly recorded as Y and T forms in the shallow water facies. Two ichnofabrics were recognized in the dominantly carbonate sedimentary succession. Ichnofabrics A, and B are interpreted as representing the tidal flat and lagoon environments respectively. Ichnofabric interpretation of the Miankuh section might be simply indicating more time to colonization in relation to the Parsi section.

Keywords: ichnofabric, Miocene, Dezful Embayment, Guri Member.

RESUMO – Os estratos carbonatados do Burdigaliano do Membro Guri estão localizados no Embasamento Dezful, ao longo da costa norte do Golfo Pérsico. A análise de icnofábrica e a paleoecologia do Membro Guri no Embasamento Dezful são descritas através da investigação de três secções de afloramento. As características da fácies do Membro Guri revelam um ambiente marinho muito pouco profundo, com elevado teor de oxidação. O Membro Guri contém espécimes notavelmente bem preservados de Thalassinoides suevicus. São registrados principalmente como formas Y e T na fácies de águas pouco profundas. Foram Reconhecidas duas icnofábricas na sucessão sedimentar predominantemente carbonatada. As icnofábricas A e B são interpretadas como representando os ambientes de planície de maré e de lagoa, respectivamente. A interpretação da icnofábrica da seção Miankuh pode simplesmente indicar mais tempo para a colonização em relação à da seção Parsi.

Palavras-chave: ichnofábrica, Mioceno, Embasamento Dezful Embayment, Membro Guri.

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Publicado

2023-07-16

Cómo citar

Ghanavati, M., Moghaddam, I. M., Aleali, M., & Arian, M. (2023). Burdigalian ichnofabric from the Guri Member, Dezful Embayment, southwestern Iran. Revista Brasileira De Paleontologia, 26(2), 122–133. https://doi.org/10.4072/rbp.2023.2.04

Número

Vol. 26 Núm. 2 (2023): Revista Brasileira de Paleontologia

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Artigos

Licencia

Derechos de autor 2023 Revista Brasileira de Paleontologia

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