Solid bitumen in calcite veins from the Natih Formation in the Oman Mountains: Multiple phases of petroleum migration in a changing stress field

Fink, Reinhard; Virgo, Simon; Arndt, Max; Visser, W.; Littke, Ralf; Urai, János L.

doi:10.1016/j.coal.2015.07.012

Cited by 27 publications

(18 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They have straight walls and are solitary or occur in 2 to 5 m spaced en échelon arrays of sinistral, sigmoidal tension gashes. Ib veins, as well as some Ia veins, contain trails of solid bitumen particles (Figure a), related to oil migration (Fink et al, ).…”

Section: Resultsmentioning

confidence: 99%

“…This might result from fluid overpressures as a consequence of either rapid burial, exhumation, hydrocarbon generation, or a combination of those. There is local evidence for hydrocarbon migration, such as black stained Ia veins, or bitumen impregnated Ib veins (Fink et al, ). This is also consistent with erosion of the top of the carbonate platform prior to obduction (Beurrier et al, ), related to the advancing forebulge of the approaching ophiolite (Robertson, ).…”

Section: Discussionmentioning

confidence: 99%

“…All temperature estimates are based on the data cited in the introduction. The 200–300°C temperatures are according to Grobe et al () and Fink et al (). (1–4 is vertically not to scale)…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Multiphase Structural Evolution of a Continental Margin During Obduction Orogeny: Insights From the Jebel Akhdar Dome, Oman Mountains

et al. 2018

Self Cite

View full text Add to dashboard Cite

The structural evolution of the carbonate platform in the footwall of the Semail ophiolite emplaced onto the passive continental margin of Arabia helps to better understand the early stages of obduction‐related orogens. These early stages are rarely observable in other orogens as they are mostly overprinted by later mountain building phases. We present an extensive structural analysis of the Jebel Akhdar anticline, the largest tectonic window of the Oman Mountains, and integrate it on different scales. Outcrop observations can be linked to plate motion data, providing an absolute timeframe for structural generations consistent with radiometric dating of veins. Top‐to‐S overthrusting of the Semail ophiolite and Hawasina nappes onto the carbonate platform during high plate convergence rates between Arabia and Eurasia caused rapid burial and overpressure, generation and migration of hydrocarbons, and bedding‐confined veins, but no major deformation in the carbonate platform. At reduced convergence rates, subsequent tectonic thinning of the ophiolite took place above a top‐to‐NNE, crustal‐scale ductile shear zone, deforming existing veins and forming a cleavage in clay‐rich layers in early Campanian times. Ongoing extension occurred along normal‐ to oblique‐slip faults, forming horst‐graben structures and a precursor of the Jebel Akhdar dome (Campanian to Maastrichtian). This was followed by NE‐SW oriented ductile shortening and the formation of the Jebel Akhdar dome, deforming the earlier structures. Thereafter, exhumation was associated with low‐angle normal faults on the northern flank of the anticline. We correlate the top‐to‐NNE crustal‐scale shear zone with a similar structure in the Saih Hatat window to develop a unified model of the tectonic evolution of the Oman Mountains.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Multiphase Structural Evolution of a Continental Margin During Obduction Orogeny: Insights From the Jebel Akhdar Dome, Oman Mountains

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to this research, the presence of allochthonous bitumen indicates hydrocarbon formation and / or migration movements in the Lusitanian Basin or adjacent basins. In a study by Fink et al (2016) the solid bitumens determined in the calcite cracks in the Natih Formation limestones in the Oman Mountains have been investigated in order to evaluate the oil migration mechanisms in this area. According to study, the solid bitumen formed in multiple events and were most likely derived from the Natih B source rocks.…”

Section: Introductionmentioning

confidence: 99%

Hydrocarbon generation potential of late cretaceous shales and carbonates in Hekimhan basin and genetic relationships with Karadere oil seep (Eastern Anatolia Region, Turkey)

Erik

2018

J Petrol Explor Prod Technol

View full text Add to dashboard Cite

In this study, Karadere oil seep (solid bitumen) and Late Cretaceous shales and carbonate levels of the Hekimhan Formation in Hekimhan Basin are compared genetically by means of organic-geochemical data. Investigated shale samples have generally low (< 0.5%) the total organic carbon values (TOC, wt%) and there is no petroleum and gas source-rock potential; however, the amount (0.11-5.92%) and type (type II-III kerogen) of organic matter within limestone are consistent for source-rock potential. On the basis of average T max (433 °C) and 0.53% R 0 values, the investigated samples are at the immature and early mature level for hydrocarbon generation. According to biomarker data, the bitumen is pre-Cretaceous in age, highly reducing conditions, formed in a marine depositional environment at normal salinity, and under the influence of high bacterial activity, and was originate from an immature carbonate source rock. These geochemical data are highly in agreement with the late Cretaceous limestone of the Hekimhan Formation, and these rocks may be considered the source rock of the solid bitumen. However, these organic richness zones formed from non-indigenous organic material, and therefore, it is concluded that this seepage which generates from non-indigenous organic materials cannot be due to the limestone at the evaluated level. On the basis of organic-geochemical evaluations, it has been concluded that, in Hekimhan Basin, some hydrocarbons developed in deeper, more mature intervals of the limestone, and that these were migrated probably only a short distance within the basin and became really surfaced in relation to tension fractures.

show abstract

“…In vitrinite-poor sedimentary sequences, the presence of solid bitumen can be an indicator of oil/gas as well as maturity, and can also be used to get information on migration paths [6][7][8] . Solid bitumen is found in various petroliferous basins around the world, and has been extensively studied 2,5,[9][10][11][12] . However, solid bitumen from Indian sedimentary basins has not been studied yet.…”

mentioning

confidence: 99%

Characterization of Solid Bitumen from Panandhro Lignite (Western India) Based on FTIR and Pyrolysis GC-MS Study

Mathews¹,

Singh²

2016

Current Science

View full text Add to dashboard Cite

In this study, FTIR and pyrolysis GC-MS analysis methods are used to characterize the handpicked solid bitumen (viscous residue of hydrocarbon) found as fillings in the lignite of Panandhro field, Gujarat. The FTIR data shows that solid bitumen is marked by intense aliphatic CH x stretching peaks between 3000 and 2800 cm -1 , medium absorption of OH stretching, aromatic C=C, and aliphatic deformation peaks. A factor versus C factor plot indicates that it is mainly composed of type-II kerogen (organic matter). The pyrolysis GC-MS data shows the highly aliphatic nature of the solid bitumen. The overall characteristics indicate that the studied solid bitumen is of pre-oil generation type and formed from increase in thermal maturity of lignites.

show abstract

Solid bitumen in calcite veins from the Natih Formation in the Oman Mountains: Multiple phases of petroleum migration in a changing stress field

Cited by 27 publications

References 55 publications

Multiphase Structural Evolution of a Continental Margin During Obduction Orogeny: Insights From the Jebel Akhdar Dome, Oman Mountains

Multiphase Structural Evolution of a Continental Margin During Obduction Orogeny: Insights From the Jebel Akhdar Dome, Oman Mountains

Hydrocarbon generation potential of late cretaceous shales and carbonates in Hekimhan basin and genetic relationships with Karadere oil seep (Eastern Anatolia Region, Turkey)

Characterization of Solid Bitumen from Panandhro Lignite (Western India) Based on FTIR and Pyrolysis GC-MS Study

Contact Info

Product

Resources

About