The Provenance of Triassic Continental Sandstones from the Beryl Field, Northern North Sea: Mineralogical, Geochemical, and Sedimentological Constraints

Preston, Jeremy; Hartley, Adrian J.; Mange-Rajetzky, Maria A.; Hole, Malcolm; May, Geoff; Buck, Steve; Vaughan, Lee

doi:10.1306/042201720018

Cited by 51 publications

(34 citation statements)

References 34 publications

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“…This multiplicity of flow directions is likely to reflect transverse drainage from the UK, Fennoscandia and Greenland, combined with flow alternately in both directions axially along the basin. To the south, in the Beryl Embayment area, sediment provenance again appears to have been dominated by transport from the immediately adjacent margin to the west (Frostick et al 1992;Preston et al 2002). Limited outcrop on the southern coast of the Moray Firth suggest palaeoflow to the east, obliquely parallel to the basin margin (Frostick et al 1988 …”

Section: North Seamentioning

confidence: 99%

Triassic palaeogeography and fluvial dispersal across the northwest European Basins

2009

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Triassic dryland fluvial systems occur infilling extensional and post-rift basins across northwest Europe. These systems were deposited by streams draining off the major basin margin catchments of Greenland, Fennoscandia, the Scottish Highlands and the remnant Variscan mountains. Fluvial drainage was dominantly endorheic in character, and terminated in playa, aeolian dune, sabkha or marsh settings. Whilst the ambient basin climate fluctuated through varying levels of aridity and humidity, the dispersal of sand into these basins was critically dependant on catchment run-off from the major, basin flanking regions. In the Early Triassic the Tethyan monsoon drove seasonal precipitation over the Variscan mountains which transported sediment northward into arid dune fields and playa. In addition, far-travelled fluvial systems supplied sediment from distant, wetter catchments. Through the Middle and Late Triassic the effects of the Tethyan monsoon apparently weakened, and sand-prone fluvial systems draining off the Variscan mountains were more limited in areal extent, but expanded during pluvial episodes. However, Greenland and Fennoscandia maintained sediment supply from the north, with perennial run-off from Fennoscandia able to maintain marshes and levels of vegetation cover not encountered elsewhere in the region and to episodically drive major exorheic drainage systems into the Tethys Sea. Published climatic simulations are consistent with these observations, which indicate that Greenland, and particularly Fennoscandia, had precipitation levels higher than the regions to the south with a positive precipitation: evaporation balance.

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Section: North Seamentioning

confidence: 99%

Triassic palaeogeography and fluvial dispersal across the northwest European Basins

2009

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“…While transmitted light optical microscopy reveals the composition of transparent heavy minerals (Mange and Maurer 1992), electron microprobe analyser Molinaroli 1989, 1991;Dill 1998;Dill and Klosa 2011;Weibel and Friis 2004) and Raman spectroscopy (e.g., Andò and Garzanti 2014) identify the opaque constituents. Heavy minerals, like garnet, ilmenite, zircon, rutile, tourmaline, and epidote, may exhibit significant variation in chemical composition depending on conditions of formation of their parent rock (Mange and Morton 2007;Meinhold 2010;Morton and Chenery 2009;Morton et al 2004;Preston et al 2002). Ilmenites from mafic igneous sources exhibit higher concentrations of TiO 2 (~50%) than those from felsic igneous sources (~48%) (Grigsby 1992).…”

Section: Introductionmentioning

confidence: 99%

Petrography of Middle Jurassic to Early Cretaceous sandstones in the Kutch Basin, western India: Implications on provenance and basin evolution

Chaudhuri¹,

Banerjee²,

Pera³

2018

J. Palaeogeogr.

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This paper investigates the provenance of Middle Jurassic to Early Cretaceous sediments in the Kutch Basin, western India, on the basis of mineralogical investigations of sandstones composition (Quartz-Feldspar-Lithic (QFL) fragment), Zircon-Tourmaline-Rutile (ZTR) index, and mineral chemistry of heavy detrital minerals of the framework. The study also examines the compositional variation of the sandstone in relation to the evolution of the Kutch Basin, which originated as a rift basin during the Late Triassic and evolved into a passive margin basin by the end Cretaceous. This study analyzes sandstone samples of Jhumara, Jhuran and Bhuj Formations of Middle Jurassic, Upper Jurassic and Lower Cretaceous, respectively, in the Kutch Mainland. Sandstones record a compositional evolution from arkosic to subarkosic as the feldspar content decreases from 68% in the Jhumara Formation to 27% in the Bhuj Formation with intermediate values in the Jhuran Formation. The QFL modal composition indicates basement uplifted and transitional continental settings at source. Heavy mineral content of these sandstones reveals the occurrence of zircon, tourmaline, rutile, garnet, apatite, monazite and opaque minerals. Sub-rounded to well-rounded zircon grains indicate a polycyclic origin. ZTR indices for samples in Jhumara, Jhuran and Bhuj Formations are 25%, 30% and 50% respectively. Chemistry of opaque minerals reveals the occurrence of detrital varieties such as ilmenite, rutile, hematite/magnetite and pyrite, in a decreasing order of abundances. Chemistry of ilmenites in the Jhumara Formation reveals its derivation from dual felsic igneous and metabasic source, while those in Jhuran and Bhuj Formations indicate a metabasic derivation. Chemistry of garnet reveals predominantly Fe-rich (almandine) variety of metabasic origin. X-ray microscopic study provides the percentage of heavy minerals ranging from 3% to 5.26%. QFL detrital modes reflect the evolution of the basin from an active rift to a passive margin basin during the Mesozoic. Integration of results from QFL modal composition of the sandstones, heavy mineral analysis and mineral chemistry, suggests sediment supply from both northern and eastern highlands during the Middle Jurassic. The uplift along the Kutch Mainland Fault in the Early Cretaceous results in curtailment of sediment input from north.

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“…For example, Preston et al (1998) and Preston et al (2002) demonstrated that detrital rutile in Triassic continental red-beds in the Beryl Field, North Sea, comprises almost pure TiO 2 , with only a small proportion containing appreciable Nb 2 O 5 or FeO.…”

Section: Introductionmentioning

confidence: 99%

Detrital Rutile Geochemistry and Thermometry as Guides to Provenance of Jurassic-Paleocene Sandstones of the Norwegian Sea

Morton¹,

Chenery²

2009

Journal of Sedimentary Research

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This paper explores the potential for use of rutile geochemistry as a provenance tracer in Jurassic-Paleocene sandstones in hydrocarbon exploration wells from the Norwegian Sea.Previous studies in this area, concentrating on provenance-sensitive heavy-mineral ratios, The development of rutile geochemistry as a provenance tracer is especially important given the stability of rutile in both diagenetic and surficial weathering conditions. The technique yields information that can be utilised to reveal the ultimate source-rock lithology and metamorphic facies, even in highly modified sandstones that may have lost most other provenance information.

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The Provenance of Triassic Continental Sandstones from the Beryl Field, Northern North Sea: Mineralogical, Geochemical, and Sedimentological Constraints

Cited by 51 publications

References 34 publications

Triassic palaeogeography and fluvial dispersal across the northwest European Basins

Triassic palaeogeography and fluvial dispersal across the northwest European Basins

Petrography of Middle Jurassic to Early Cretaceous sandstones in the Kutch Basin, western India: Implications on provenance and basin evolution

Detrital Rutile Geochemistry and Thermometry as Guides to Provenance of Jurassic-Paleocene Sandstones of the Norwegian Sea

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