Lithostratigraphy and limestone microfacies of the Oligocene lagoonal, coral patch reef-bearing Maʼahm Beds (South Mawaleh, Oman)

Mattern, Frank; Scharf, Andreas; Al-Sayigh, Abdul Razak; Galluccio, Laura; Frijia, Gianluca; Al-Maimani, Khadija; Al-Marouqi, Fatima

doi:10.1007/s13146-023-00919-0

Carbonates Evaporites

2024

DOI: 10.1007/s13146-023-00919-0

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Lithostratigraphy and limestone microfacies of the Oligocene lagoonal, coral patch reef-bearing Maʼahm Beds (South Mawaleh, Oman)

Frank Mattern,

Andreas Scharf,

Abdul Razak Al-Sayigh

et al.

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Cited by 2 publications

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Architecture of the post-obductional Sunub Structure, northeastern Sultanate of Oman: Based on mapping, 3D gravity inversion and shale migration

Scharf,

Economou,

Mattern

et al. 2024

Journal of African Earth Sciences

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Architecture of the post-obductional Sunub Structure, northeastern Sultanate of Oman: Based on mapping, 3D gravity inversion and shale migration

Scharf,

Economou,

Mattern

et al. 2024

Journal of African Earth Sciences

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Lithostratigraphy and Limestone Microfacies of the Jafnayn Formation (Paleocene to Early Eocene, Al-Khod, Sultanate of Oman): Deposition in a Restricted Lagoon with Intervals of Open Marine Conditions

Mattern,

Scharf,

Al-Sayigh

et al. 2024

Geosciences

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We studied the Jafnayn Formation’s lithostratigraphy, microfacies, depositional environment, and uncertain presence of the Paleocene/Eocene boundary and present the first detailed analysis of a 127-m-thick section using the standard microfacies (SMF)/facies zone (FZ) system. The formation is dominated by foraminiferal grainstones and packstones of SMF 18-FOR, followed by peloidal grainstones and packstones of SMF 16. Coral-red algae floatstones of SMF 8 occur sporadically. SMF 18-DASY appears only once. SMF 16 and 18-FOR suggest a restricted lagoon, whereas SMF 8 and 18-DASY reflect episodic open marine lagoonal conditions. The section consists of four lithostratigraphic units. Considerable detrital quartz near the base (Unit 1: 22%; sand, sandstone, conglomerate) and top (Unit 4: 40%; sand) coincides with a restricted lagoon affected by near-shore processes (base) and near-shore conditions (top). Open marine conditions show an elevated bioclast diversity in units 3 and 4. Unit 2 displays very thickly-bedded limestones of the restricted lagoon. The lagoon barriers likely consist of foraminifera and other allochems that were reworked from the lagoon to form shoals. Coral remains in units 3 and 4 suggest that coral build-ups in the upper part of the formation protected the lagoon as well. The early Eocene age of several basal Alveolina species in the lowermost 9 m of the studied section indicates that the section is incomplete, with the late Paleocene part and meters-thick basal yellow marl missing. The Paleocene/Eocene boundary is unexposed.

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Lithostratigraphy and limestone microfacies of the Oligocene lagoonal, coral patch reef-bearing Maʼahm Beds (South Mawaleh, Oman)

Cited by 2 publications

References 40 publications

Architecture of the post-obductional Sunub Structure, northeastern Sultanate of Oman: Based on mapping, 3D gravity inversion and shale migration

Architecture of the post-obductional Sunub Structure, northeastern Sultanate of Oman: Based on mapping, 3D gravity inversion and shale migration

Lithostratigraphy and Limestone Microfacies of the Jafnayn Formation (Paleocene to Early Eocene, Al-Khod, Sultanate of Oman): Deposition in a Restricted Lagoon with Intervals of Open Marine Conditions

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