Depositional sequences, diagenesis and structural control of the Albian to Turonian carbonate platform systems in coastal Fars (SW Iran)

Vincent, Benoı̂t; Buchem, F. S. P.; Bulot, Luc G.; Jalali, Mahmoud; Swennen, Rudy; Hosseini, A.; Baghbani, D

doi:10.1016/j.marpetgeo.2015.02.018

Cited by 82 publications

(46 citation statements)

References 30 publications

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“…Such remarkable changes can be attributed to the effects of post Turonian tectonics in the NE margin of the Arabian Plate. After deposition of the Sarvak Formation, considerable changes in basin morphology have occurred as the result of progressive compressional tectonic regime (see Alavi 2004;Sepehr and Cosgrove 2005;Jahani et al 2007;Piryaei et al 2010Piryaei et al , 2011Vincent et al 2015).…”

Section: Thickness Variations Of Upper Cretaceous Sequencesmentioning

confidence: 99%

Controls on depositional facies in Upper Cretaceous carbonate reservoirs in the Zagros area and the Persian Gulf, Iran

Mehrabi

Rahimpour‐Bonab

Hajikazemi

et al. 2015

Facies

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Section: Thickness Variations Of Upper Cretaceous Sequencesmentioning

confidence: 99%

Controls on depositional facies in Upper Cretaceous carbonate reservoirs in the Zagros area and the Persian Gulf, Iran

Mehrabi

Rahimpour‐Bonab

Hajikazemi

et al. 2015

Facies

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“…Discontinuities are key horizons in the marine sedimentary record related to a break in sedimentation or hiatus (Bathurst, ; Clari et al ., ; Immenhauser et al ., ); they display wide variability in carbonate rocks as they may form in submarine environments or during subaerial exposure, which can be intermittent or prolonged (Hillgärtner, ; Sattler et al ., ; Martinuš et al ., ). These surfaces are used as marker horizons for correlating stratigraphic sections at basin scale and beyond (Kauffman et al ., ; Immenhauser et al ., ; Christ et al ., ), and as depositional unit boundaries in sequence stratigraphy (Durlet & Loreau, ; Loreau & Durlet, ; Christ et al ., ,b, ; Vincent et al ., ). Discontinuities generally have multiphase histories, because they sometimes record several successive phases of regression and transgression (Hamon et al ., ), and it is essential to combine both geochemical and petrographic techniques in order to decipher their complex formation (Videtich & Matthews, ).…”

Section: Introductionmentioning

confidence: 99%

The complex diagenetic history of discontinuities in shallow‐marine carbonate rocks: New insights from high‐resolution ion microprobe investigation of δ¹⁸O and δ¹³C of early cements

et al. 2017

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Sedimentary gaps are a major obstacle in the reconstruction of a carbonate platform's history. In order to improve the understanding of the early diagenesis and the succession of events occurring during the formation of discontinuity surfaces in limestones, secondary ion mass spectrometry was used for the first time to measure the δ18O and δ13C signatures of 11 early cement and fabric stages in several discontinuity surfaces from the Jurassic carbonate platform of the Paris Basin, France. Pendant cements show a high variability in δ18O, which was impossible to detect by the less precise microdrilling method. The morphology of a given cement can be produced in various environments, and dogtooth cements especially can precipitate in marine phreatic and meteoric phreatic to vadose environments. Marine dogtooth cements and micritic microbially induced fabrics precipitated directly as low‐magnesium calcite in marine waters, as attested to by the preservation of their initial δ18O and δ13C signals. Five discontinuity types are recognized based on high‐resolution geochemical analyses, and their palaeoenvironmental history can be reconstructed. Two exposure surfaces with non‐ferroan pendant or meniscus cements formed in the oxidizing vadose zone. A hardground displays marine fibrous cements and non‐ferroan dogtooth cements that formed in a subtidal environment in oxidizing water. Two composite surfaces have undergone both marine and subaerial lithification. Composite surface 1 displays non‐luminescent ferroan dogtooth cements that precipitated in reduced conditions in seawater, followed by brown‐luminescent dogtooth cements characteristic of a meteoric phreatic environment. Composite surface 2 exhibits microbially induced fabrics that formed in marine water with abundant organic matter. The latter discontinuity, initially formed in a subtidal environment, was subsequently exposed to meteoric conditions, as evidenced by ferroan geopetal cements. A high‐resolution ion microprobe study is essential to precisely document the successive diagenetic environments that have affected carbonate rocks and discontinuities with a polygenic and intricate history.

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“…The Sarvak Formation is divided into four sequences of the third order (duration of 1.5-3 Ma and thickness of 50-150 m). In addition, several sequences of the fourth and fifth orders are also distinguished within this formation [34,35].…”

Section: Geological Settingmentioning

confidence: 92%

Gamma-clustering sequence stratigraphy, case study of the carbonate Sarvak Formation, Southwest Iran

et al. 2019

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Comprehensive study of seismic, well-logs and core data is essential in sequence stratigraphic analysis. In the absence of seismic and core data, gamma-ray logging is an important stratigraphic tool due to its sensitivity to shale content of strata. In this paper, gamma-ray log data are divided into two clusters. One cluster with higher average of gamma value is interpreted as being due to deeper sedimentary environments. A second cluster with lower average is due to shallower sedimentary environments or shelf deposits. This kind of interpretation is based on two assumptions: (1) a deeper depositional environment produces higher gamma emission, and (2) the gamma-ray log is not much affected from diagenetic processes. At each sampling depth, a positive label is assigned to the cluster with higher, and a negative label to the cluster with lower average. A cumulative diagram of the cluster labels was compared to previously studied environmental facies. It was illustrated that the diagram recreates the relative water depth change, so it identifies sequence surfaces (sequence boundary and maximum flooding surface). The identified sequence surfaces were compared to core-based sequence stratigraphy of the carbonate Sarvak Formation, southwest Iran, in two oil wells. Sequence stratigraphy interpretations are judgmental, i.e., based on expert opinion, and being judgmental is a source of uncertainty for further decision making. This work reveals that stacking patterns and system tracts of the third-order sequences in the carbonate reservoirs could be identified in a systematic way using gamma-clustering algorithm. Nevertheless, the well-log resolution is a limiting factor for identifying the fourth-order sequences.

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Depositional sequences, diagenesis and structural control of the Albian to Turonian carbonate platform systems in coastal Fars (SW Iran)

Cited by 82 publications

References 30 publications

Controls on depositional facies in Upper Cretaceous carbonate reservoirs in the Zagros area and the Persian Gulf, Iran

Controls on depositional facies in Upper Cretaceous carbonate reservoirs in the Zagros area and the Persian Gulf, Iran

The complex diagenetic history of discontinuities in shallow‐marine carbonate rocks: New insights from high‐resolution ion microprobe investigation of δ¹⁸O and δ¹³C of early cements

Gamma-clustering sequence stratigraphy, case study of the carbonate Sarvak Formation, Southwest Iran

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Depositional sequences, diagenesis and structural control of the Albian to Turonian carbonate platform systems in coastal Fars (SW Iran)

Cited by 82 publications

References 30 publications

Controls on depositional facies in Upper Cretaceous carbonate reservoirs in the Zagros area and the Persian Gulf, Iran

Controls on depositional facies in Upper Cretaceous carbonate reservoirs in the Zagros area and the Persian Gulf, Iran

The complex diagenetic history of discontinuities in shallow‐marine carbonate rocks: New insights from high‐resolution ion microprobe investigation of δ18O and δ13C of early cements

Gamma-clustering sequence stratigraphy, case study of the carbonate Sarvak Formation, Southwest Iran

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The complex diagenetic history of discontinuities in shallow‐marine carbonate rocks: New insights from high‐resolution ion microprobe investigation of δ¹⁸O and δ¹³C of early cements