Meteoric phreatic diagenesis in cyclic late Dinantian carbonates, northwest England

Horbury, Andrew D.; Adams, A. E.

doi:10.1016/0037-0738(89)90032-8

Cited by 33 publications

(26 citation statements)

References 16 publications

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“…Similar observations have been documented from high-frequency cyclic deposits on adjacent platforms (South Wales : Raven 1983;Searl 1988b;Wright 1992;Derbyshire: Walkden & Williams 1991;Horbury & Adams 1989;Alston-Askrigg: Gawthorpe 1986;Tucker 2003). Extensive cementation in the meteoric realm across the North Wales Platform is evidenced by abundant syntaxial overgrowths of non-ferroan calcite, preferentially seeded on crinoid and echinoid fragments, and interparticle pore-filling cement characterized by cement phases SC1-SC3.…”

Section: Early Diagenesissupporting

confidence: 77%

“…In particular, the non-luminescence of SC1 cements is consistent with limited Mn or incorporation of CL quenchers such as Fe, whereas bright luminescent subzones could reflect incorporation of Mn into the calcite crystal lattice. Elsewhere in the Pennine Basin, this high-frequency CL zonation is interpreted to reflect frequent changes in the redox conditions (see Walkden & Berry 1984;Horbury & Adams 1989). The similarity in cement patterns at different stratigraphic levels may result from water table fluctuations.…”

Section: Early Diagenesismentioning

confidence: 99%

“…SC1-SC3 and C4 cements post-date marine cements (M1) and are cross-cut by stylolites and solution seams, suggesting that they pre-date compaction. The high-frequency sub-zonation, syntaxial nature and large crystal size of the cement means that they resemble cements on age-equivalent carbonate platforms in the Pennine Basin and South Wales that have been interpreted to have precipitated in the meteoric phreatic realm (Al-Fadel 1983;Walkden & Berry 1984;Searl 1988aSearl ,b, 1989Horbury & Adams 1989). In particular, the non-luminescence of SC1 cements is consistent with limited Mn or incorporation of CL quenchers such as Fe, whereas bright luminescent subzones could reflect incorporation of Mn into the calcite crystal lattice.…”

Section: Early Diagenesismentioning

confidence: 99%

“…Walkden & Williams 1991;Fraser & Gawthorpe 2003;Hollis & Walkden 2012, and references therein). Gutteridge (1987Gutteridge ( , 1991, Walkden & Williams (1991), Hollis (1998) and Hollis & Walkden (2002) have published a comprehensive and well-constrained paragenesis for the Derbyshire Platform, with some comparative work on the southern margin of the Askrigg Platform (Hollis & Walkden 2012) and the Lake District (Horbury & Adams 1989). Complementary studies focusing on the mineralization of northern England and Wales were carried out by Pattrick & Russell (1989) and Ixer & Vaughan (1993).…”

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confidence: 99%

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The control of basin evolution on patterns of sedimentation and diagenesis: an example from the Mississippian Great Orme, North Wales

Juerges

Hollis

Marshall

et al. 2015

JGS

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The Mississippian North Wales Platform is located on the margins of the East Irish Sea Basin and has been little studied over the last 30 years. The exposed Visean limestones provide new insights into the deposition, porosity evolution, distribution of dolomitization, and Pb-Zn and Cu mineralization on the North Wales carbonate platform. This is of relevance to the characterization of fault-related dolomite hydrocarbon reservoirs and age-equivalent Mississippi Valley-type mineral deposits. In particular, the study demonstrates the intimate relationship between sedimentation, basin-scale tectonism and postdepositional fluid flux. Depositional cyclicity is marked, with metre-scale upward-shallowing cycles in which pervasive marine and meteoric calcite cements occlude matrix porosity and syndepositional fractures. Consequently, subsequent burial diagenetic replacive dolomitization is matrix selective and cements are primarily restricted to fractures. Seven phases of dolomite are defined based on texture and cathodoluminescence petrography, with phases D1-D3 as the most volumetrically significant. Dolomite phases D0-D2 are matrix replacive, cross-cutting stratigraphy and locally fingering along beds for several metres. Dolomite phases D3-D7 are hosted by faults and fractures and also line vugs. Evidence of telogenesis is recorded where burial diagenetic products are post-dated by calcite cements precipitated from meteoric fluids. Dolomitization probably occurred during the Mississippian and continued into the Pennsylvanian. Pb-Zn mineralization is also interpreted to have occurred during the Pennsylvanian, associated with Variscan tectonism. Overall, the North Wales Platform displays a more complex paragenesis than age-equivalent platforms in the Pennine Basin, owing to multiple phases of burial and exhumation. The study demonstrates the importance of linking burial history to detailed field and petrographical data to understand and predict the spatial and temporal controls on diagenetic processes and products within syn-and post-rift sequences.

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Section: Early Diagenesissupporting

confidence: 77%

Section: Early Diagenesismentioning

confidence: 99%

Section: Early Diagenesismentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

The control of basin evolution on patterns of sedimentation and diagenesis: an example from the Mississippian Great Orme, North Wales

Juerges

Hollis

Marshall

et al. 2015

JGS

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“…CL zonations in clear spar cements are assumed to be due to changes in porefluid chemistry, so that each zone may represent a timecorrelative discrete period of cementation. It appears that it is mainly variations in the contents (or ratio) of Fe and Mn that control calcite luminescence (Dorobek 1987;Niemann and Read 1988;Horbury and Adams 1989;Meyers 1989).…”

Section: Cathodoluminescence (Cl) Zones and Subzonesmentioning

confidence: 99%

Developing concepts of high-resolution diagenetic stratigraphy for Pliocene cool-water limestones in New Zealand, and their sequence stratigraphy

Caron

Nelson

2003

Carbonates Evaporites

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The diageneticevolutionof calciticcool-waterlimestonescan be markedly differentfromthat for aragonite-dominated tropical carbonates. Thispetrographicstudydevelopsa"sequencestratigraphic"approachto cool-watercarbonatediagenesisbased onthechronological occurrenceof all diageneticfeatures (not only cement phases) within sedimentarysuccessions,their verticaland lateral distribution, and their grouping into discontinuity-bounded (by dissolutionsurfaces, fractures, renucleationevents) suites at a thin-sectionscale. The progressionof diageneticenvironmentsthat moved througha successionis relatedto diageneticdiscontinuitiescorrelatablethroughoutthe studyarea. In our limestones acriticaldiscontinuityeventto decipheristhefirstevidenceofmechanically-inducedskeletalfracturing, enablingthedefinitionofprecompactionandpost-compaction diageneticfeatures. A comparisonofjust thepre-compactiondiageneticsuitesinsamplesfromaboveand below significant outcropdisconformities enablesisolationofthe"specificdiagenesis"ofunconformity-bounded depositional units,whichisthatsuiteof diageneticeventsassociatedwith the evolutionof the sedimentationrealmof a unit,exclusiveof diageneticoverprintssharedwith anyoverlying unit throughan unconformitysincethese relateto some subsequent,differentdepositionalstage. In tum, the specificdiagenesisof a succession of depositional faciesbetween consecutiveunconformitiesmay thenbe interpretedwithin a sequencestratigraphicframework.Sectionsof cool-waterPlioceneskeletallimestonesin easternNorth Island,NewZealand,comprisedeepening-and then sometimesshallowingupwards,unconformity-bounded depositional packages,or sequences. Werecognizetendifferentspecificdiageneticsignaturesintheserocksthat arecorrelatable todepositional lithofacies. Thevertical distribution ofspecific diagenetic signatureswithinthesequences exhibitsatrendfrommainly constructiveto mainlydestructivediagenesisin the deepening-upwards memberofthe sequences,andconstructivein theirshallowing-upwards portion,thatcan be integratedina sequencestratigraphicframework. Constructivediagenesisoccursinthelowerpartof the transgressive system tract (TST) and in the upper part of the regressivesystem tract (RST),whereas destructivediagenesisis dominant in the upper part of the TST, the highstandsystem tract (HST), and the lower part of the RST.

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Alteration of volcaniclastic deposits at Minna Bluff: Geochemical insights on mineralizing environment and climate during the Late Miocene in Antarctica

Antibus

Panter

Wilch

et al. 2014

Geochem Geophys Geosyst

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Secondary minerals in volcaniclastic deposits at Minna Bluff, a 45 km long peninsula in the Ross Sea, are used to infer processes of alteration and environmental conditions in the Late Miocene. Glassy volcaniclastic deposits are altered and contain phillipsite and chabazite, low to high-Mg carbonates, chalcedony, and clay. to 43 C) and stability of zeolites in geothermal systems (>10 to $100 C).The alteration was a result of isolated, ephemeral events involving the exchange between heated meteoric water and glass during or soon after the formation of each deposit. Near-surface evaporative distillation can explain 18 O-enriched compositions for some Mg-rich carbonates and chalcedony. The d 18 O water calculated for carbonates (215.8 to 222.9&) reveals a broad change, becoming heavier between $12 and $7 Ma, consistent with a warming climate. These findings are independently corroborated by the interpretation of Late Miocene sedimentary sequences recovered from nearby sediment cores. However, in contrast to a cold-based thermal regime proposed for ice flow at core sites, wet-based conditions prevailed at Minna Bluff; a likely consequence of high heat flow associated with an active magma system.

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Meteoric phreatic diagenesis in cyclic late Dinantian carbonates, northwest England

Cited by 33 publications

References 16 publications

The control of basin evolution on patterns of sedimentation and diagenesis: an example from the Mississippian Great Orme, North Wales

The control of basin evolution on patterns of sedimentation and diagenesis: an example from the Mississippian Great Orme, North Wales

Developing concepts of high-resolution diagenetic stratigraphy for Pliocene cool-water limestones in New Zealand, and their sequence stratigraphy

Alteration of volcaniclastic deposits at Minna Bluff: Geochemical insights on mineralizing environment and climate during the Late Miocene in Antarctica

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