Aspects of the Organic Geochemistry and Petrology of Metalliferous Ores

Giże, A. P.; Manning, David

doi:10.1007/978-1-4615-2890-6_26

Cited by 10 publications

(5 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The anisotropy in the thin, pore-lining stringers is orientated perpendicular to the edge of the bitumen, as has been observed in other pore-lining bitumens (e.g. Giże, 1985;Roberts et al, 1993) and implies that the thermal disproportionation of the hydrocarbon occurred in the presence of an aqueous fluid (Giże and Manning, 1993).…”

Section: Bitumen Anisotropysupporting

confidence: 54%

“…Some of the blocky bitumens are isotropic, and may represent graphitisable carbons that have not been sufficiently heated. It is also possible that they represent non-graphitising carbons which may form a fine micron-scale anisotropy (Giże and Manning, 1993). At higher temperatures, slower -reacting components form a coarser mesophase (White, 1976).…”

Section: Bitumen Anisotropymentioning

confidence: 99%

See 1 more Smart Citation

Petrography of Pyrobitumens in Middle – Late Jurassic Sandstones From Thermally Degraded Hydrocarbon Accumulations, East Greenland

Strogen,

Marshall,

Whitham

et al. 2023

Journal of Petroleum Geology

View full text Add to dashboard Cite

A number of exhumed hydrocarbon traps have been described from the Traill Ø region of East Greenland. This study focuses on the Bjørnedal area where the distribution of bitumen has been mapped out. Bitumen staining clearly has a cross‐cutting relationship to stratigraphic units and can be shown to form distinct palaeo‐accumulations. Detailed petrographic studies show that bitumen occurs as late diagenetic phases in Middle to Late Jurassic sandstones, and is present both as both grain‐coating and pore‐filling phases. Geochemical analyses confirm that the bitumen is organic in composition and is composed largely of carbon and hydrogen. Both H/C ratios and bonds identified by FTIR behave as expected with increasing maturity measured using bitumen reflectance. Together, these results provide strong evidence that the material is pyrobitumen derived from the in situ thermal degradation of a liquid hydrocarbon precursor. On the basis of textures in transmitted and reflected light and quantitative bitumen reflectance distributions, two populations of pyrobitumen may be recognised in some samples.Two phases of Paleogene magmatism occurred in the Traill Ø region. The first late Paleocene – early Eocene phase was related to the opening of the northern North Atlantic in the earliest Eocene, and was experienced throughout East Greenland and the northwest European margin. The later magmatic phase was related to the gradual separation of the Jan Mayen microcontinent from East Greenland through the late Eocene – early Oligocene. A single pyrobitumen phase is recognised in accumulations only affected by the early magmatism, and a second phase is only observed in areas affected by both the early and later magmatism. This relationship is interpreted as evidence for a direct relationship between magmatic phases and bitumen generation. The presence of bitumen formed by the thermal degradation of liquid hydrocarbons during the later magmatic event suggests that a viable petroleum system remained active following the early magmatic event.

show abstract

Section: Bitumen Anisotropysupporting

confidence: 54%

Section: Bitumen Anisotropymentioning

confidence: 99%

Petrography of Pyrobitumens in Middle – Late Jurassic Sandstones From Thermally Degraded Hydrocarbon Accumulations, East Greenland

Strogen,

Marshall,

Whitham

et al. 2023

Journal of Petroleum Geology

View full text Add to dashboard Cite

show abstract

“…pyrobitumens produced through normal, progressive geothermal heating caused by burial, but instead are more typical of those produced during fluctuating temperature (temperature transients) related to MVT or Carlin-type hydrothermal mineral deposits (Gize, 1985;Gize and Manning, 1993). Other examples of organic thermal pulse products have also been documented by Bertrand et al (2003) for the Lower Ordovician Beekmantown Formation in the St. Flavien gas field in southern Québec.…”

Section: Burial Historymentioning

confidence: 92%

Structurally controlled hydrothermal dolomite reservoir facies: An overview

Davies¹,

2006

View full text Add to dashboard Cite

“…Many studies have reported on solid bitumens and metal sulfides associated with TSR-related mineral depositing processes (e.g., Powell and Macqueen, 1984;Marikos et al, 1986;Montacer et al, 1988;Leventhal, 1990;Pü ttmann et al, 1990;Gize and Manning, 1993;Disnar, 1996;Spangenberg and Macko, 1998). TSR-related solid bitumens are documented in the Gulf of Mexico (e.g., Sassen, 1988;Sassen et al, 1988;Shew and Garner, 1990;Heydari, 1997), the Western Canadian Sedimentary Basin (Machel, 2000(Machel, , 2001Stasiuk, 1997;Stasiuk and Fowler, 2004), the Arabian Basin (Tobey et al, 1993;Halpern et al, 1994), the Sichuan Basin of China (Li et al, 2005), and Turkmenistan (Isaksen and Khalylov, 2007).…”

Section: Introductionmentioning

confidence: 98%