Drainage reorganization during breakup of Pangea revealed by in-situ Pb isotopic analysis of detrital K-feldspar

Tyrrell, Shane; Haughton, Peter D. W.; Daly, J. Stephen

doi:10.1130/g4123a.1

Cited by 64 publications

(58 citation statements)

References 20 publications

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“…Recent provenance data from the Corrib Field west of Ireland (Tyrrell et al 2007) indicate a Grenville Province source for the Lower Triassic Sherwood Sandstone (Figure 3), which was probably located in the Labrador or south Greenland area. A long sediment transport path of up to ca.…”

Section: Atlantic Margin Regionmentioning

confidence: 96%

“…In the south this system was conglomeratic, but became increasingly sand-prone northwards into the East Irish Sea, where terminal splay complexes of the St Bees Sandstone Formation (Figure 3) were progressively over-ridden by expanding sand-prone fluvial systems (Figure 17). West of Ireland the Sherwood Sandstone similarly records initial deposition in terminal splay and playa, over-ridden by an axial fluvial system derived from the Grenville province in Labrador (Tyrrell et al 2007). This system flowed northwards, ultimately towards floodplain and lacustrine deposits of the Otter Bank Shale Formation and possibly fluvial-aeolian Otter Bank Sandstone Formation (Figure 12).…”

Section: Lower Triassic Pre-hardegsenmentioning

confidence: 97%

“…Major fluvial systems which transported sediment 400-800 km from remote catchments in Greenland (Tyrrell et al 2007) and northern France (Audley-Charles 1970). The presence of these longer drainage systems suggests that some distant catchments experienced more substantial precipitation which was capable of maintaining sediment transport over many hundreds of kilometres across semi-arid to arid basins.…”

Section: Climate and Sediment Supplymentioning

confidence: 99%

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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: Atlantic Margin Regionmentioning

confidence: 96%

Section: Lower Triassic Pre-hardegsenmentioning

confidence: 97%

Section: Climate and Sediment Supplymentioning

confidence: 99%

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Triassic palaeogeography and fluvial dispersal across the northwest European Basins

2009

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“…In this study we employed the Pb isotope characteristics of K-feldspar grains to examine the source of modern sediment, as well as select Holocene and Pleistocene sediments from the flood plains of the Indus River. This isotope system has an established track record as a provenance tool in a number of environments (McDaniel et al, 1994;Gwiazda et al, 1996;Hemming et al, 1998;Tyrrell et al, 2006Tyrrell et al, , 2007, and has already been used to discriminate evolving provenance within the Palaeogene Indus Suture Zone (Clift et al, 2001b) and in the Arabian Sea during the Eocene (Clift et al, 2001a). Our work builds on an earlier Pb isotopic study of the modern river system (Clift et al, 2002), but provides significantly more data from the Chenab and Sutlej Rivers, which drain the Himalaya front.…”

Section: Introductionmentioning

confidence: 93%

Pb isotopic variability in the modern-Pleistocene Indus River system measured by ion microprobe in detrital K-feldspar grains

Alizai

Clift

Giosan

et al. 2011

Geochimica et Cosmochimica Acta

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“…The 'Budleighensis' drainage system is also shown (blue). Directional arrows (red, green, brown) Pb lead space (after Tyrrell et al 2007 and references therein) illustrating (a) the isotopic composition of Pb basement domains in the circum-North Atlantic (Fig. 8); (b) the Pb isotopic range of K-feldspar from Lower Triassic sandstones in the Slyne Basin; (c) the Pb isotopic range of K-feldspar from Permo-Triassic sandstones in the Rockall Basin (Dooish gas condensate discovery); (d) the Pb isotopic range of K-feldspar in Foula Formation sandstones from basins west of Shetland.…”

Section: Fundy Basin Nova Scotia Canadamentioning

confidence: 99%

Stratigraphic trapping potential in the Carboniferous of North Africa: developing new play concepts based on integrated outcrop sedimentology and regional sequence stratigraphy (Morocco, Algeria, Libya)

Lubeseder

Redfern

Petitpierre

et al. 2010

PGC

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Permo-Triassic rift basins offer important hydrocarbon targets along the Atlantic margins. Their fill is dominated by continental red beds, comprising braided fluvial, alluvial fan, aeolian, floodplain and lacustrine facies. These relatively lightly explored basins span both the Atlantic and Tethyan domains and developed above a complex basement with inherited structural fabrics. Sparse data in offshore regions constrain understanding of depositional geometries and sedimentary architecture, further impeded by their deep burial beneath younger strata, combined with the effects of later deformation during continental breakup. This paper provides results from a multidisciplinary analysis of basins along the Atlantic margin. Regional seismic and well data, combined with geochemical provenance analysis from the European North Atlantic margins, are integrated with detailed outcrop studies in Morocco and Nova Scotia. The research provides new insights into regional basin tectonostratigraphic evolution, sediment fill, and reservoir distribution, architecture and quality at a range of scales. Regional seismic profiles, supported by key well data, indicate the presence of post-orogenic collapse basins, focused narrow rifts and low-magnitude multiple extensional depocentres. Significantly, Permo-Triassic basin geometries are different and more varied than the overlying Jurassic and younger basins. Provenance analysis using Pb isotopic composition of detrital K-feldspar yields new and robust controls on the sediment dispersal patterns of Triassic sandstones in the NE Atlantic margin. The evolving sedimentary architecture is characterized by detailed sedimentological studies of key outcrops of age equivalent Permian-Triassic rifts in Morocco and Nova Scotia. The interplay of tectonics and climate is observed to influence sedimentation, which has significant implications for reservoir distribution in analogue basins. New digital outcrop techniques are providing improved reservoir models, and identification of key marker horizons and sequence boundaries offers a potential subsurface correlation tool. Future work will address source and seal distribution within the potentially petroliferous basins.

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Drainage reorganization during breakup of Pangea revealed by in-situ Pb isotopic analysis of detrital K-feldspar

Cited by 64 publications

References 20 publications

Triassic palaeogeography and fluvial dispersal across the northwest European Basins

Triassic palaeogeography and fluvial dispersal across the northwest European Basins

Pb isotopic variability in the modern-Pleistocene Indus River system measured by ion microprobe in detrital K-feldspar grains

Stratigraphic trapping potential in the Carboniferous of North Africa: developing new play concepts based on integrated outcrop sedimentology and regional sequence stratigraphy (Morocco, Algeria, Libya)

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