A survey of pyritised animal, plant, and trace fossils and concretionary pyrites, Germav Formation, southeastern Turkey

Bölücek, Cemal; Ilhan, Burhan

doi:10.1016/j.crte.2005.10.005

Cited by 6 publications

(2 citation statements)

References 56 publications

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“…The high biogenic pyrite content is typical in burrow adherent form both in vertical and in horizontal directions, as well as framboidal form. According to Bolucek and Ilhan (2006), the layered and lensoidal pyrites are syngenetic; the concretionary and authigenic pyrites are early diagenetic, and the fracture-fill pyrites are of epigenetic origin. The sediment consists of rooting structures and desiccation cracks.…”

Section: Barrier Island Faciesmentioning

confidence: 99%

Sedimentology and depositional system of a transitional shallow marine – coastal complex, Lower Visean deposits in the Central Volga-Ural Petroleum Province, Orenburg

Sebők

Csató

Nemes

2021

CEuGeol

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The paper presents a study of a Lower Carboniferous (Visean) clastic sequence commonly called Bobrikovsky Formation, deposited in the Volga-Ural Petroleum Province, Orenburg Region. Our investigation included sedimentological description of core samples from hydrocarbon wells and well log correlations. Facies were identified by well log patterns and calibrated by core sedimentology. The Bobrikovsky Formation is proposed to be interpreted as an overall transgressive-regressive succession in a nearshore-tidal environment. Transgressive lagoon-estuary and barrier island facies became regressional lagoon fill-type settings.

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Section: Barrier Island Faciesmentioning

confidence: 99%

Sedimentology and depositional system of a transitional shallow marine – coastal complex, Lower Visean deposits in the Central Volga-Ural Petroleum Province, Orenburg

Sebők

Csató

Nemes

2021

CEuGeol

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“…They allow sedimentary redox conditions to be identified as oxic, suboxic, anoxic or euxinic. Moreover, some studies particularly were interested to pyrites morphology in sedimentary rocks [4] [5]. The most widely accepted view is that euhedral and framboidal pyrite is regularly formed in sedimentary environments under anoxic conditions.…”

Section: Introductionmentioning

confidence: 99%

Geological, Mineralogical and Geochemical Studies of Pyrite Deposits in the Eastern Part of Douala Sub-Basin (Cameroon, Central Africa)

Ngôn¹,

Abomo²,

Mbog³

et al. 2015

IJG

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Pyrite deposit of pK27, Douala sub-basin (Cameroon, Central Africa) was studied in a tropical forest setting physically and using X-ray diffraction and X-ray fluorescence spectrometry (XRF) in order to characterize the mineralization for his industrial utilization. The sedimentary materials from the pyrite deposit were grouped into five (05) main lithofacies, including four claystone facies and one conglomeratic facies. The mineralization occurs along the low slopes of valleys in light grey claystone facies situated on the bottom of outcrops with 80 to 200 cm thickness. The particle size distribution of clayey materials host rocks shows that they are essentially constituted of clay and silts fractions. However, their Sorting index (So) more than 4.5 corresponds to poorly sorted sediments and the torrential type; whereas their Coefficient of asymmetry (A) more than 1 indicates that the sorting is carried out towards fine particles. Macroscopically, pyrite in these materials is in crumbly and consolidated piles with aggregate pyrites in oolithic concretions, and globular, cubic, octaedric, massive and fossiliferous forms. The mineralogical compositions of these clayey materials indicate that they are essentially kaolinitic and illitic, followed by goethite, quartz, pyrite, halloysite, anatase and rutile with hematite as accessory minerals. Pyrite in sand fractions is associated with kyanite, grenat, rutile, diopside, muscovite and tourmaline the minerals which recognize the regional metamorphism. However, the specific chemical signature of SO3 content high in clayey materials and abundant (50.86% -57.64% SO 3 ) in pyrite is characteristic of the pK27 py-* Corresponding author. G. F. N. Ngon et al. 883 ritic formations in the eastern part of Douala sub-basin. Moreover, the Co:Ni ratios of pyrites approximately 0.25 to 0.8 are characteristic of sedimentary pyrites and also suggest an anoxic environment.

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Microorganism-mediated preservation of Planolites, a common trace fossil from the Harkless Formation, Cambrian of Nevada, USA

Ahn

Babcock

2012

Sedimentary Geology

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A survey of pyritised animal, plant, and trace fossils and concretionary pyrites, Germav Formation, southeastern Turkey

Cited by 6 publications

References 56 publications

Sedimentology and depositional system of a transitional shallow marine – coastal complex, Lower Visean deposits in the Central Volga-Ural Petroleum Province, Orenburg

Sedimentology and depositional system of a transitional shallow marine – coastal complex, Lower Visean deposits in the Central Volga-Ural Petroleum Province, Orenburg

Geological, Mineralogical and Geochemical Studies of Pyrite Deposits in the Eastern Part of Douala Sub-Basin (Cameroon, Central Africa)

Microorganism-mediated preservation of Planolites, a common trace fossil from the Harkless Formation, Cambrian of Nevada, USA

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