Journal ArticleDOI
Thermally metamorphosed bitumen from Windy Knoll, Derbyshire, England
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TLDR
A bitumen sample from the base of the Windy Knoll deposit has been examined by qualitative and quantitative reflected-light methods and by X-ray diffraction techniques as discussed by the authors.About:
This article is published in Chemical Geology.The article was published on 1978-01-01. It has received 32 citations till now.read more
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Polyphase thermal evolution in the Infra-Cambrian Ara Group (South Oman Salt Basin) as deduced by maturity of solid reservoir bitumen
TL;DR: In this article, solid reservoir bitumen has been identified within pores, pore throats and microfractures of the carbonates by using different microscopy techniques, which most likely formed from thermal cracking of oil.
Journal ArticleDOI
Occurrences of hydrocarbons in and around igneous rocks
TL;DR: In this article, the occurrence of hydrocarbons in and around igneous rocks is investigated and it is shown that they are global in extent, occurring in over 100 countries worldwide.
Journal ArticleDOI
The origin of pyrobitumens in upper Devonian Leduc formation gas reservoirs, Alberta, Canada: an optical and EDS study of oil to gas transformation
TL;DR: In this paper, pyrobitumens were found to have high bireflectance and very anisotropic coarse flow-to-domain coke microtextures.
Journal ArticleDOI
Graptolites as indicators of the temperature histories of rocks
Fariborz Goodarzi,B. S. Norford +1 more
TL;DR: In this article, a pilot study of the optical properties of graptolite skeletal materials shows progressive changes of reflectance, bireflectance, refractive index and absorptive index, produced by temperature changes related to depth of burial.
Journal ArticleDOI
Nature and origin of ‘carbon’ in the Archaean Witwatersrand Basin, South Africa
TL;DR: The nature and origin of the carbonaceous matter in the gold-bearing reefs of the Archaean Witwatersrand basin of South Africa has long been a subject of controversy and debate.
References
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Journal ArticleDOI
Optical properties of carbonized vitrinites
TL;DR: In this paper, the optical properties of three vitrinite-rich coals (carbon, daf: 82.5, 88.0 and 93.1%), carbonized at temperature intervals of 25 °C over the greater part of the range 20-950 °C using a heating rate of 2.45 °C/min.
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Optical character of thermally metamorphosed coals of northern England
J. M. Jones,S. Creaney +1 more
TL;DR: In this article, an optical study of the effects of differing geothermal history on the included organic material has been carried out in the Carboniferous sediments of northern England, and the results showed that the optical changes induced by the thermal metamorphism depend on the initial rank of the sediments.
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Influence of heating-rate variation on the anisotropy of carbonized vitrinites
TL;DR: In this paper, six vitrinites of bituminous and anthracitic rank were carbonized in nitrogen at three heating rates (1, 10 and 60 ° C/min) to temperatures between 20 and 950 ° C.
Journal ArticleDOI
Origin of Hydrocarbons of Uinta Basin, Utah
TL;DR: The Eocene sediments of the Uinta basin, Utah, consist of fluvial and deltaic red and green shales and sands around the margins of the basin, and bituminous siliceous dolomites in the center as discussed by the authors.