Mesozoic deltaic system along the western margin of the Indian plate: lithofacies and depositional setting of Datta Formation, North Pakistan

Abbasi, İftikhar Ahmed; Haneef, Mohammad; Obaid, Shams; Daud, Farukh; Qureshi, Amjad W.

doi:10.1007/s12517-010-0276-1

Cited by 16 publications

(15 citation statements)

References 4 publications

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“…The Datta Formation mostly consists of mixed sandstone, siltstone, carbonaceous iron-rich clays, and coal seams at places (Abbasi et al 2012). In the study area, the rock unit is overlain disconformably by the Triassic Kingriali Formation and underlain conformably by the Samana Suk Formation.…”

Section: Datta Formationmentioning

confidence: 99%

Integrating the palynostratigraphy, petrography, X-ray diffraction and scanning electron microscopy data for evaluating hydrocarbon reservoir potential of Jurassic rocks in the Kala Chitta Range, Northwest Pakistan

Ahmad

Wadood

Khan

et al. 2020

J Petrol Explor Prod Technol

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In this paper, we present the palynostratigraphy, petrography, scanning electron microscopy (SEM) and X-ray diffraction (XRD) investigations to evaluate hydrocarbon reservoir potential of the Jurassic clastic-carbonate mixed sequence of the Kala Chitta Range, northwest Pakistan. The chronostratigraphic sub-divisions of the diverse lithologies within the sequence were made by using palynostratigraphy. The clastic dominated sequence of Datta Formation was assigned Toarcian-Bajocian age, while the Shinawari Formation was deposited during the Bajocian-middle Bathonian. The carbonate shoal facies of the Samana Suk Formation showed late Bathonian-Tithonian time of deposition. The primary and secondary porosities augmented by the plug porosity and permeability data suggest that the sandstone of Datta Formation is an excellent reservoir. The dominance of diverse matrix within the Shinawari Formation occluded the primary porosity. However, based on dissolution and dolomitization, the Shinawari Formation is categorized as a moderate reservoir. The dominance of various types of matrix and cement with superimposed burial diagenesis has occluded the primary porosity within the Samana Suk Formation. However, the diagenetic dissolution and dolomitization during the telogenetic stage were supported by the SEM and bulk geochemical data. Such diagenetic overprinting has significantly enhanced the reservoir potential of the unit.

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Section: Datta Formationmentioning

confidence: 99%

Integrating the palynostratigraphy, petrography, X-ray diffraction and scanning electron microscopy data for evaluating hydrocarbon reservoir potential of Jurassic rocks in the Kala Chitta Range, Northwest Pakistan

Ahmad

Wadood

Khan

et al. 2020

J Petrol Explor Prod Technol

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“…The oldest Triassic Kingriali Formation is comprised of secondary dolomites, deposited during marine transgression (Iqbal, Jan, & Hanif, 2014). The Lower Jurassic deltaic strata of the Datta Formation is deposited in the regressive phase of sea level (Abbasi, Haneef, Obaid, Daud, & Qureshi, 2012). The monotonous sequence of limestone and marl/shale of the Shinawari Formation marks another episode of transgression (Ali et al, 2019).…”

Section: Geological Settingmentioning

confidence: 99%

Investigating the impact of diagenesis on reservoir quality of the Jurassic shallow shelfal carbonate deposits: Kala Chitta Range, North Pakistan

et al. 2020

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The Middle Jurassic carbonate succession (Samana Suk Formation) in Kala Chitta Range, North Pakistan was studied in detail to investigate the impact of diagenesis on reservoir potential of the rock unit. The current study integrates detailed geological field, petrographic, scanning electron microscopic, and advance geochemical studies to reconstruct the diagenetic history of Jurassic carbonates and to evaluate its role in re‐shaping the reservoir potential. Based on field observations, five lithological units along with diagenetic features are recorded. Furthermore, various microfacies are defined within each lithological unit. Based on petrographic studies, it is observed that various diagenetic features including micritization, neomorphism, dissolution, compaction (mechanical and chemical), dolomitization, and cementation have played a crucial role in the porosity modification of various lithological units. The paragenetic sequence established in this study reveals modification of the carbonates in various diagenetic phases, for example, marine, meteoric, and burial (shallow and deep) diagenesis, followed by a phase of uplifting. Based on different types of microscopic porosities generated during various diagenetic phases, mudstone to wackestone carries good reservoir potential while the grainstone has moderate to poor potential. The plug porosity and permeability data further corroborate these findings. At outcrop, various large‐scale dissolution activities and dense network of inter‐connected fractures in all lithological units may have further enhanced the reservoir potential of the studied strata.

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“…The presence of residual laterite zone indicates intense chemical weathering under humid tropicalnear tropical conditions (Tucker 1992) and represents a candidate type 1 sequence boundary of higher hierarchical order Van Wagoner et al 1990;Wood 1990;Wood et al 1991;Westcott 1993;Emery and Myers 1996). The presence of boehmite, kaolinite, and other likewise minerals in the laterite zone (figure 7) indicate a warm, humid, tropical to near tropical climate at the onset of Datta deposition that prevailed throughout the formation (Abbasi et al 2012).…”

Section: Palaeoenvironments and Sequence Stratigraphy Of The Datta Fomentioning

confidence: 99%

“…The Datta Formation represents first Jurassic sedimentation following the Late Triassic unconformity (Shah 1977(Shah , 2009Abbasi et al 2012). The present study aims to understand the depositional setting and sequence stratigraphic architecture of the Datta Formation in the western Salt Range, based on investigation in the field and petrographic studies in the laboratory (figures 3-6).…”

Section: Introductionmentioning

confidence: 99%

Palaeoenvironmental and sequence stratigraphic analyses of the Jurassic Datta Formation, Salt Range, Pakistan

et al. 2015

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The Lower Jurassic Datta Formation, western Salt Range, Pakistan, comprises three facies associations: (1) channel belt facies association (CBFA), (2) channel margin, and overbank facies association (CMOFA), and (3) lagoonal facies association (LFA). A cyclic fining-upward trend in the succession is represented by basal quartzose conglomerate/pebbly sandstone, through coarse to fine quartzose sandstone to siltstone and shales/claystone, which contains some carbonate accumulation. Two prominent depositional sequences are recognized in the Datta Formation with the lower high and upper low magnitude cycles. The Datta Formation thus represents a thick sedimentary succession and in the study area, i.e., western Salt Range, mainly channel belt, flood plain and/or delta top facies are exposed. The palaeocurrent analysis shows that the source area with acidic plutonic rocks laid to S-SE in the Indian shield, aravalies or older sedimentary rocks of the Indus Basin (i.e., Khewra, Tobra and Warchha formations). A tentative stratigraphic correlation of the Datta Formation with the lower Jurassic Lathi Formation, India invites further work in parts of India, which will elaborate the extent of the Datta Formation in the Greater Indian peninsula and develop palaeogeographic setting for this Lower Jurassic deltaic rock unit.

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Mesozoic deltaic system along the western margin of the Indian plate: lithofacies and depositional setting of Datta Formation, North Pakistan

Cited by 16 publications

References 4 publications

Integrating the palynostratigraphy, petrography, X-ray diffraction and scanning electron microscopy data for evaluating hydrocarbon reservoir potential of Jurassic rocks in the Kala Chitta Range, Northwest Pakistan

Integrating the palynostratigraphy, petrography, X-ray diffraction and scanning electron microscopy data for evaluating hydrocarbon reservoir potential of Jurassic rocks in the Kala Chitta Range, Northwest Pakistan

Investigating the impact of diagenesis on reservoir quality of the Jurassic shallow shelfal carbonate deposits: Kala Chitta Range, North Pakistan

Palaeoenvironmental and sequence stratigraphic analyses of the Jurassic Datta Formation, Salt Range, Pakistan

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