Bio-lithofacies and diagenesis in the early-middle oligocene of Abu Dhabi, United Arab Emirates

Whittle, Gregory L.; Alsharhan, Abdulrahman S.; El-Deeb, Wael

doi:10.1007/bf03175240

Cited by 16 publications

(10 citation statements)

References 8 publications

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“…Similarly, in the Negev, a correlative hiatus and the same variable pattern of a large magnitude unconformity across the Eocene/Oligocene boundary is observed with time gaps differing from place to place (Benjamini, 1984). Whittle et al (1995) reported that during the Middle and Late Eocene times, a major regression took place associated with a large tectonic uplift in central Arabia exposing all of that area to extensive subaerial erosion. The development of a local submarine topography of swells and basins during the Early Oligocene has been demonstrated by Kuĉenjak et al (2006) from widespread exploration wells localities in Syria.…”

Section: Discussionmentioning

confidence: 99%

New microplanktonic biostratigraphy and depositional sequences across the Middle–Late Eocene and Oligocene boundaries in eastern Jordan

Farouk¹,

Faris²,

Ahmad³

et al. 2015

GeoArabia

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The first detailed calcareous nannofossil and planktonic foraminiferal biostratigraphic and integrated lithofacies analyses of the Eocene–Oligocene transition at the Qa’ Faydat ad Dahikiya area in the Eastern Desert of Jordan, on the border with Saudi Arabia, is presented. Three calcareous nannofossil zones namely: Discoaster saipanensis (NP17), Chiasmolithus oamaruensis (NP18) and Ericsonia subdisticha (NP21), and three planktonic foraminiferal zones: upper part of Truncorotaloides rohri (E13), Globigerinatheka semiinvoluta (E14) and Cassigerinella chipolensis/Pseudohastigerina micra (O1) are identified. Calcareous nannofossil bioevents recorded in the present study show numerous discrepancies with the Standard biostratigraphic zonal schemes to detect the Middle/Upper Eocene boundary (e.g. the highest occurrences (HOs) of Chiasmolithus solitus, C. grandis, and lowest occurrences (LOs) of C. oamaruensis, Isthmolithus recurvus are not considered reliable markers for global correlation). The Middle/Upper Eocene boundary occurs in the current study above the extinctions of large muricate planktonic foraminifera (large Acarinina and Truncorotaloides spp.) which coincide within the equivalent calcareous nannofossil NP18 Zone. These microplanktonic bioevents seem to constitute more reliable markers for the base of the Upper Eocene in different provinces. The uppermost portion of the Middle Eocene is characterized by an observed drop in faunal content and, most likely, primarily denotes the effect of the major fall in eustatic sea level. A major unconformity (disconformity) marked by a mineralized hardground representing a lowstand is recorded in the present study at the Eocene–Oligocene transition that reveals an unexpected ca. 2.1 Myr duration, separating Eocene (NP18/E14 zones) from Oligocene (NP21/O1 zones). Furthermore, the microfossil turnover associated with a rapid decline of the microfossil assemblages shows a distinct drop in diversity and abundance towards the Eocene/Oligocene unconformity and is associated with a sharp lithological break marked, at the base, by a mineralized hardground representing a major sequence boundary. These bioevents, depositional sequences and the depositional hiatus correlate well with different parts of the Arabian and African plates, but the magnitude of the faunal break differs from place to place as a result of intraplate deformation during the regional Oligocene regression of Neo-Tethys on the northern Arabian Plate. The presence of the Lower Oligocene shallow-marine calcareous planktonic assemblages in the study area indicate that communication between the eastern and western provinces of the western Neo-Tethys region still existed at this time.

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Section: Discussionmentioning

confidence: 99%

New microplanktonic biostratigraphy and depositional sequences across the Middle–Late Eocene and Oligocene boundaries in eastern Jordan

Farouk¹,

Faris²,

Ahmad³

et al. 2015

GeoArabia

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“…1). The Arabian and Levant regions (i.e., the eastern and central part of the study area), during the late Eocene -Oligocene, were also affected by a regional uplift testified by large hiatuses (Alsharhan and Nairn, 1995;Whittle et a., 1995;Buchbinder et al, 2005;Al-Juboury and McCann, 2008;Agard et al, 2011;Avni et al, 2012;Farouk et al, 2013;Bernecker, 2014;Coletti et al, 2019;Sadooni and Alsharhan, 2019). This event has been related to the development of the Afar Dome and the opening of the Red Sea (Ziegler, 2001;Avni et al, 2012;Bernecker, 2014).…”

Section: Geological Contextmentioning

confidence: 99%

Paleocene to Miocene southern Tethyan carbonate factories of the Southwestern and Western Central Asia

Coletti¹,

Commissario²,

Mariani³

et al. 2022

Preprint

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One hundred and forty-four sections of shallow-water carbonates, deposited between the Paleocene and the Miocene, from the Levant to the Himalaya, have been investigated to analyze the distribution of carbonate facies and carbonate producing organisms. Large benthic foraminifera resulted the volumetrically most important group of carbonate producers during the whole period, with a peak in abundance during the Eocene. Colonial corals are relatively abundant during the Paleocene and in the Miocene, their abundance peak during the Oligocene and has a minimum during the Eocene. Red calcareous algae have a similar pattern although their peak in abundance covers both the Oligocene and the Miocene. Green calcareous algae decrease from the Paleocene onward. Facies related to very shallow and/or restricted marine conditions peak during the Miocene and in particular during the Aquitanian. Both the pattern of large benthic foraminifera and of colonial corals seems to be related to temperatures, with warm periods favoring the former and cool periods the latter. Red calcareous algae display a pattern similar to that of colonial corals suggesting that the periods favorable for one group, on the large scale, are also favorable for the other. The progressive decrease of green calcareous algae could be tentatively related to a preservation bias connected to the transition from Paleogene assemblages that included presumably calcitic taxa of green algae and Neogene assemblages entirely constituted by aragonitic taxa with limited preservation potential. The Aquitanian peak in facies related to very shallow and/or restricted marine conditions is most likely connected to the progressive narrowing of the Tethys related to the collision between Arabia and Eurasia. These results denote an overall agreement between the abundance of the various types of shallow-water carbonate facies and large-scale environmental and geological processes, highlighting the potential for paleoenvironmental reconstruction locked in the shallow-water record.

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“…During the Late Eocene, most of the Arabian Shelf and South Africa were raised up into a continental landmass and deposits of the Early Oligocene global marine regression are found only in portions of the shallow marine facies in the lowland areas of the Africa and Arabian platforms towards the north (e.g., northern part of Egypt and Libya, Syria, north Iraq, Oman, United Arab Emirates). Whittle et al (1995) reported that during the Middle and Late Eocene times, a major regression took place associated with a large uplift in Arabia and Iran exposing all of that area for extensive erosion. Such conditions are also recorded by (Abdulsamad et al, 2009) in the Benghazi area (NE Libya) where, the Lower Oligocene unconformably overlies Middle Eocene sediments.…”

Section: Lithostratigraphymentioning

confidence: 99%

Geomorphology Using Geographic Information System and Globel Mapper

Akawwi¹

2013

American Journal of Environmental Sciences

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An effort has been made to evaluate drainage morphometry and its influence on landform processes, geology and erosion characteristics in Jordan Valley and surrounding area. Geological maps 1:50,000 scale and the professional Google Earth images were used for analysis of various morphometric, lithological and landform characteristics of Jordan Valley basin. Morphometric analysis was carried out at sub basin level using Geographic Information Systems (GIS) and Globel Mapper (GM) to analyze the influence of drainage morphometry on landforms, drainage pattern and land erosion. Different landforms were recognized in the basin based on visual exposition of 3D Digital Elevation Model (DEM) that obtained from the thousands of points of the elevations by using GIS and GM, escarpments, plateau spurs, narrow wadies âvalliesâ and main wadies floor, foot slopes. The sub basins that take number 2, 5 and 6 are associated with high density dentritic drainage pattern because of impermeable formation and high slope then high surface runoff and high erosion. The sub basins number 1, 3, 4 are associated to a low density dentritic drainage pattern due to the topography of the area that is flat shape and the formation is impermeable. A1, A2 and A3 are a trellis drainage pattern with high density because of the moderate slope and high fracturing formation

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Bio-lithofacies and diagenesis in the early-middle oligocene of Abu Dhabi, United Arab Emirates

Cited by 16 publications

References 8 publications

New microplanktonic biostratigraphy and depositional sequences across the Middle–Late Eocene and Oligocene boundaries in eastern Jordan

New microplanktonic biostratigraphy and depositional sequences across the Middle–Late Eocene and Oligocene boundaries in eastern Jordan

Paleocene to Miocene southern Tethyan carbonate factories of the Southwestern and Western Central Asia

Geomorphology Using Geographic Information System and Globel Mapper

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