Diagenesis of the Rotliegend sandstone: the answer ain't blowin' in the wind

Gluyas, Jon; Leonard, Andy

doi:10.1016/0264-8172(95)91504-i

Cited by 14 publications

(3 citation statements)

References 1 publication

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“…Kaolinite is interpreted as an early diagenetic product formed by the decomposition of K-feldspar either by infiltration of meteoric water into the Rotliegende sandstones (Turner et al, 1993;Gluyas and Leonard, 1995) or by acidic pore water from Carboniferous coal measures expelled into the Rotliegende during burial (Gaupp et al, 1993;Platt, 1993).…”

Section: Previous Studies Of Diagenetic Illitementioning

confidence: 99%

Origin and timing of late diagenetic illite in the Permian–Carboniferous Unayzah sandstone reservoirs of Saudi Arabia

Franks¹,

Zwingmann²

2010

Bulletin

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Diagenetic illite is one of two major porosity occluding cements in the Unayzah sandstone reservoirs (Permian-Carboniferous) of Saudi Arabia. The other is diagenetic quartz. This article focuses on the origin of illite and its timing. Illite has been formed by a reaction of detrital K-feldspar and early diagenetic kaolinite as temperatures increased due to burial. When either of the two reactants is exhausted, illite ceases to precipitate. There is no evidence that hydrocarbon emplacement, deep brine migration, or unique thermal events are factors in illite precipitation. Modeling of illite precipitation as a kinetically controlled reaction using burial histories of the samples studied generally yields a reasonable match between measured and modeled ages and amounts of illite. This lends further support to the gradual formation of illite over a time-temperature interval. Although quartz overgrowths and diagenetic illite may occur in the same thin section, they appear to be mutually exclusive locally. Quartz overgrowths do not occur on detrital quartz grains that are coated with diagenetic illite, and illite is rarely observed on quartz overgrowths. Therefore, it appears that not only does diagenetic illite inhibit nucleation of quartz overgrowths but quartz overgrowths may also inhibit precipitation of diagenetic illite. The two cements appear to compete for surface area on uncoated detrital quartz grains.

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Section: Previous Studies Of Diagenetic Illitementioning

confidence: 99%

Origin and timing of late diagenetic illite in the Permian–Carboniferous Unayzah sandstone reservoirs of Saudi Arabia

Franks¹,

Zwingmann²

2010

Bulletin

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“…Authors focused on characterization of predominant cements and basin-wide spatial distribution of diagenetic pattern (Gaupp et al 1993), the origin and spatial distribution of several diagenetic clay minerals, such as illite, chlorite and kaolinite (e.g. Platt, 1993;Gluyas & Leonard, 1995;Hillier, Fallick & Matter, 1996;Ziegler, 2006), the influence of maturation products from hydrocarbon source rocks on diagenetic reactions and products (Schöner & Gaupp, (Gast et al 2010) and German Rotliegend gasfields after Pasternak et al (2006). FH -Flechtingen High; TS -Thüringisches Schiefergebirge; BM -Bohemian massif.…”

Section: Introductionmentioning

confidence: 99%

“…1993), the origin and spatial distribution of several diagenetic clay minerals, such as illite, chlorite and kaolinite (e.g. Platt, 1993; Gluyas & Leonard, 1995; Hillier, Fallick & Matter, 1996; Ziegler, 2006), the influence of maturation products from hydrocarbon source rocks on diagenetic reactions and products (Schöner & Gaupp, 2005), or the impact of brines derived from the overlying Zechstein sequence (e.g. Purvis, 1992).…”

Section: Introductionmentioning

confidence: 99%

Products and timing of diagenetic processes in Upper Rotliegend sandstones from Bebertal (North German Basin, Parchim Formation, Flechtingen High, Germany)

et al. 2012

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Aeolian-fluvial Upper Rotliegend sandstones from Bebertal outcrops (Flechtingen High, North Germany) are an analogue for deeply buried Permian gas reservoir sandstones of the North German Basin (NGB). We present a paragenetic sequence as well as thermochronological constraints to reconstruct the diagenetic evolution and to identify periods of enhanced mesodiagenetic fluid–rock reactions in sandstones from the southern flank of the NGB. Bebertal sandstones show comparatively high concentrations of mesodiagenetically formed K-feldspar but low concentrations of illite cements. Illite-rich grain rims were found to occur preferentially directly below sedimentary bounding surfaces, i.e. aeolian superimposition surfaces, and indicate the lowest intergranular volume. Illite grain rims also indicate sandstone sections with low quartz and feldspar cement concentrations but high loss of intergranular volume due to compaction.40Ar–39Ar age determination of pronounced K-feldspar grain overgrowths and replacements of detrital grains indicates two generations: an early (Triassic) and a late (Jurassic) generation. The latter age range is similar to published diagenetic illite ages from buried Rotliegend reservoir sandstones. The first generation suggests an early intense mesodiagenetic fluid flow with remarkably high K+activity synchronous with fast burial of proximal, initial graben sediments on the southern flank of the NGB. Accordingly, zircon fission-track data indicate that the strata already reached the zircon partial annealing zone of approximately 200°C during early mesodiagenesis. Zircon (U–Th)/He ages (92 ± 12 Ma) as well as apatite fission-track ages (~ 71–75 Ma) indicate the termination of mesodiagenetic processes, caused by rapid exhumation of the Flechtingen High during Late Cretaceous basin inversion.

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Linking Diagenesis to Sequence Stratigraphy: An Integrated Toolfor Understanding and Predicting Reservoir Quality Distribution

Morad

Ketzer

Ros

2013

Linking Diagenesis to Sequence Stratigraphy

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Diagenesis of the Rotliegend sandstone: the answer ain't blowin' in the wind

Cited by 14 publications

References 1 publication

Origin and timing of late diagenetic illite in the Permian–Carboniferous Unayzah sandstone reservoirs of Saudi Arabia

Origin and timing of late diagenetic illite in the Permian–Carboniferous Unayzah sandstone reservoirs of Saudi Arabia

Products and timing of diagenetic processes in Upper Rotliegend sandstones from Bebertal (North German Basin, Parchim Formation, Flechtingen High, Germany)

Linking Diagenesis to Sequence Stratigraphy: An Integrated Toolfor Understanding and Predicting Reservoir Quality Distribution

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