Fission track dating, thermal histories and tectonics of igneous intrusions in East Greenland

Gleadow, A. J. W.; Brooks, C. Kent

doi:10.1007/bf00371880

Cited by 155 publications

(77 citation statements)

References 30 publications

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“…On this basis, the similar Tertiary apatite and sphene ages are compatible with known igneous source rocks on Rockall (Jones et al, 1972) and in Greenland (Gleadow and Brooks, 1979). Similarly, a source with Cretaceous apatite ages possibly comprises the high level microgabbroic intrusives at Helen's Reef on the Rockall Plateau (Roberts et al, 1974).…”

Section: Provenance Of the Eocene Sedimentssupporting

confidence: 61%

“…Similar ages are known from granitic and metamorphic rocks in Greenland (Gleadow, 1978;Gleadow and Brooks, 1979). From experience elsewhere in the North Atlantic Craton (Gleadow, 1978), such apatite ages are also likely in the basement rocks of Rockall, but direct fission track results are lacking.…”

Section: Introductionmentioning

confidence: 68%

“…on Rockall, although comparable apatite ages are known from Caledonian intrusives and basement rocks on Greenland (Gleadow and Brooks, 1979). Gleadow (1978) has shown that such ages are likely in basement intrusive and metamorphic rocks on continental margins as a result of the widespread low-level heating effects associated with rifting.…”

Section: Provenance Of the Eocene Sedimentsmentioning

confidence: 87%

“…Apatite and sphene were separated from the 90 to 300 µm fraction of crushed and washed core by conventional heavy liquid and magnetic techniques and were dated by the external detector method (e.g., Gleadow and Brooks, 1979). The external detector method enables ages to be calculated on individual grains and thus allows different source components in a sediment to be identified.…”

Section: Methods and Conditionsmentioning

confidence: 99%

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Fission Track Dating of Apatite and Sphene from Paleogene Sediments of Deep Sea Drilling Project Leg 81, Site 555

Duddy¹,

Gleadow²,

Keene³

1984

Initial Reports of the Deep Sea Drilling Project, 81

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Fission track ages of individual crystals of detrital apatite and sphene separated from early Eocene and Paleocene sandstones at Site 555 indicate the contribution of detritus from source rocks of at least three distinct age groups. A major group of Tertiary (56 ± 3 m.y.) apatite ages is compatible with either contemporaneous or near contemporaneous volcanism or rapid unroofing of high level intrusives like those identified previously on Rockall Island (Jones et al., 1972) and Greenland (Gleadow and Brooks, 1979). Cretaceous (100 ± 20 m.y.) apatite ages are consistent with known high level microgabbroic intrusives on Helen's Reef (Roberts et al., 1974). Such apatite ages could also be derived from basement rocks of very ancient terrains, especially around rifted continental margins where low level heating or uplift has affected the fission track ages of apatites (Gleadow, 1978).Minor contributions were also identified from a terrain with apatite ages around 150 to 200 m.y. Similar ages are known from granitic and metamorphic rocks in Greenland (Gleadow, 1978;Gleadow and Brooks, 1979). From experience elsewhere in the North Atlantic Craton (Gleadow, 1978), such apatite ages are also likely in the basement rocks of Rockall, but direct fission track results are lacking.With the identification of at least two nonmetamorphic sources, these data enable a refinement of the source of apatite suggested by heavy mineral studies (Morton, this volume).Two distinct groups of sphene ages of around 60 and 1,380 m.y. are also consistent with sources either on the Rockall Bank or in Greenland (Gleadow, 1978).Apatites from around 900 m depth have a combined age very close to the age of deposition, and they have track length distributions indicating that present temperatures in the hole are at, or close to, the maximum experienced since deposition.

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Section: Provenance Of the Eocene Sedimentssupporting

confidence: 61%

Section: Introductionmentioning

confidence: 68%

Section: Provenance Of the Eocene Sedimentsmentioning

confidence: 87%

Section: Methods and Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

Fission Track Dating of Apatite and Sphene from Paleogene Sediments of Deep Sea Drilling Project Leg 81, Site 555

Duddy¹,

Gleadow²,

Keene³

1984

Initial Reports of the Deep Sea Drilling Project, 81

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“…This is a linear interpolation of the data points onto a regular grid with a 1˚ by 0.25˚ resolution. Dataset: Brooks and Gleadow (1977), Gleadow and Brooks (1979), Bugge et al (1980), Dickin (1981), Dickin and Jones (1983), Mussett (1986), Thompson et al (1987), Gibson et al (1987), Noble et al (1988), Hitchen and Ritchie (1993), Nevle et al (1994), Upton et al (1995), Pearson et al (1996), Hirschmann et al (1997), Price et al (1997), , , Storey et al (1998), Tegner et al (1998), Gamble et al (1999), Tegner and Duncan (1999), Moorbath et al (1968), Ross and Mussett (1976), Hardarson et al (1997), andFoulger (2006). Ren et al (2003), Jones and White (2003), Mackay et al (2005) and Knox (1998).…”

Section: Resultsmentioning

confidence: 99%

The North Atlantic Igneous Province: A review of models for its formation

Meyer

Wijk²,

Gernigon³

2007

Special Paper 430: Plates, Plumes and Planetary Processes

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The mantle plume concept is currently being challenged as an explanation for North Atlantic Igneous Province formation. Alternative models have been suggested, including delamination, meteorite impact, small-scale rift-related convection, and chemical mantle heterogeneities. We review available datasets on uplift, strain localization, age and chemistry of igneous material, and tomography for the North Atlantic Igneous Province, and compare them with predictions from the mantle plume and alternative models. The mantle plume concept is quite successful in explaining formation of the NAIP, but unexplained aspects remain. Delamination and impact models are currently not supported. Rift-related small-scale convection models appear to be able to explain volcanic rifted margin volcanism well. However, the most important problem that non-plume models need to overcome is the continuing, long-lived melt anomaly extending via the Greenland-Faeroe Ridges to Iceland. Mantle heterogeneities, resulting from an ancient subducted slab, are included in plate tectonic models to explain the continuing melt production as an alternative to the mantle plume model, but there are still uncertainties related to this idea that need to be solved.

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Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

Bergman¹,

Eldrett

Minisini

2021

Large Igneous Provinces

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This chapter summarizes geochronologic and other data for major Phanerozoic Large Igneous Provinces (LIPs), Oceanic Anoxic Events (OAEs) and organic-rich petroleum source rocks. It also evaluates the models that support or refute genetic links between the three groups. The evidence appears to favor genetic links between the three groups, however, additional high precision age and geochemical data are needed to validate several events. Furthermore, the chapter provides insights into the importance of LIPs in hydrocarbon exploration.

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Fission track dating, thermal histories and tectonics of igneous intrusions in East Greenland

Cited by 155 publications

References 30 publications

Fission Track Dating of Apatite and Sphene from Paleogene Sediments of Deep Sea Drilling Project Leg 81, Site 555

Fission Track Dating of Apatite and Sphene from Paleogene Sediments of Deep Sea Drilling Project Leg 81, Site 555

The North Atlantic Igneous Province: A review of models for its formation

Phanerozoic Large Igneous Province, Petroleum System, and Source Rock Links

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