Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator
Geochemical and petrographic effects of burial temperature on sedimentary organic matter have long been recognized and used as various thermal maturity indicators (i.e., pyrolysis T-max, conodont and spore coloration, vitrinite/bitumen/zoodast reflectance), and fluorescent spectrometry (i.e., lambda...
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ftuniaarhuspubl:oai:pure.atira.dk:publications/a52bf610-1c40-4380-9c25-e726337d0944 2023-05-15T14:28:54+02:00 Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator Haeri-Ardakani, Omid Sanei, Hamed 2015-01-01 https://pure.au.dk/portal/da/publications/dolomite-fluorescence-redgreen-quotient(a52bf610-1c40-4380-9c25-e726337d0944).html https://doi.org/10.1016/j.coal.2014.12.005 eng eng info:eu-repo/semantics/restrictedAccess Haeri-Ardakani , O & Sanei , H 2015 , ' Dolomite fluorescence Red/Green quotient : A potential new thermal maturity indicator ' , International Journal of Coal Geology , vol. 137 , pp. 165-171 . https://doi.org/10.1016/j.coal.2014.12.005 Dolomite fluorescence color Red/Green Quotient Thermal maturity Utica Shale Montney Formation CANADIAN ARCTIC ARCHIPELAGO WEST-CENTRAL ALBERTA CARBONATE PETROGRAPHY DOLOMITIZATION SEDIMENTARY VITRINITE ROCKS BASIN REFLECTANCE GRAPTOLITES article 2015 ftuniaarhuspubl https://doi.org/10.1016/j.coal.2014.12.005 2023-01-04T23:54:46Z Geochemical and petrographic effects of burial temperature on sedimentary organic matter have long been recognized and used as various thermal maturity indicators (i.e., pyrolysis T-max, conodont and spore coloration, vitrinite/bitumen/zoodast reflectance), and fluorescent spectrometry (i.e., lambda(max) and Red/Green quotient). This study investigates variations in the fluorescence color spectra (in the visible light spectrum) of authigenic dolomite over a wide range of thermal maturities. Two sample sets of calcareous shales/siltstones from Eastern and Western Canada, with sparse dolomite crystals in the rock matrix were selected to examine the relationship between thermal maturity and fluorescent properties of dolomite. Results from a range of thermal maturities, from the oil window to the dry gas window, reveal a strong positive correlation between the Red/Green quotient (Q) of dolomite crystals and equivalent vitrinite reflectance (VRo(eqv.)) values. This can be optically described as the color shift in fluorescent properties of dolomite with increasing maturity. This strong positive correlation between Q and thermal maturity can potentially be used as an alternative thermal maturity indicator in calcareous shales with low organic content Compilation of worldwide data is required to understand the relationship trend and conversion equations among dolomite Q and other established thermal maturity indicators. (C) 2014 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Aarhus University: Research Arctic Canada Canadian Arctic Archipelago Lambda ENVELOPE(-62.983,-62.983,-64.300,-64.300) Montney ENVELOPE(-120.920,-120.920,56.450,56.450) International Journal of Coal Geology 137 165 171 |
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Open Polar |
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Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Dolomite fluorescence color Red/Green Quotient Thermal maturity Utica Shale Montney Formation CANADIAN ARCTIC ARCHIPELAGO WEST-CENTRAL ALBERTA CARBONATE PETROGRAPHY DOLOMITIZATION SEDIMENTARY VITRINITE ROCKS BASIN REFLECTANCE GRAPTOLITES |
spellingShingle |
Dolomite fluorescence color Red/Green Quotient Thermal maturity Utica Shale Montney Formation CANADIAN ARCTIC ARCHIPELAGO WEST-CENTRAL ALBERTA CARBONATE PETROGRAPHY DOLOMITIZATION SEDIMENTARY VITRINITE ROCKS BASIN REFLECTANCE GRAPTOLITES Haeri-Ardakani, Omid Sanei, Hamed Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator |
topic_facet |
Dolomite fluorescence color Red/Green Quotient Thermal maturity Utica Shale Montney Formation CANADIAN ARCTIC ARCHIPELAGO WEST-CENTRAL ALBERTA CARBONATE PETROGRAPHY DOLOMITIZATION SEDIMENTARY VITRINITE ROCKS BASIN REFLECTANCE GRAPTOLITES |
description |
Geochemical and petrographic effects of burial temperature on sedimentary organic matter have long been recognized and used as various thermal maturity indicators (i.e., pyrolysis T-max, conodont and spore coloration, vitrinite/bitumen/zoodast reflectance), and fluorescent spectrometry (i.e., lambda(max) and Red/Green quotient). This study investigates variations in the fluorescence color spectra (in the visible light spectrum) of authigenic dolomite over a wide range of thermal maturities. Two sample sets of calcareous shales/siltstones from Eastern and Western Canada, with sparse dolomite crystals in the rock matrix were selected to examine the relationship between thermal maturity and fluorescent properties of dolomite. Results from a range of thermal maturities, from the oil window to the dry gas window, reveal a strong positive correlation between the Red/Green quotient (Q) of dolomite crystals and equivalent vitrinite reflectance (VRo(eqv.)) values. This can be optically described as the color shift in fluorescent properties of dolomite with increasing maturity. This strong positive correlation between Q and thermal maturity can potentially be used as an alternative thermal maturity indicator in calcareous shales with low organic content Compilation of worldwide data is required to understand the relationship trend and conversion equations among dolomite Q and other established thermal maturity indicators. (C) 2014 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Haeri-Ardakani, Omid Sanei, Hamed |
author_facet |
Haeri-Ardakani, Omid Sanei, Hamed |
author_sort |
Haeri-Ardakani, Omid |
title |
Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator |
title_short |
Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator |
title_full |
Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator |
title_fullStr |
Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator |
title_full_unstemmed |
Dolomite fluorescence Red/Green quotient:A potential new thermal maturity indicator |
title_sort |
dolomite fluorescence red/green quotient:a potential new thermal maturity indicator |
publishDate |
2015 |
url |
https://pure.au.dk/portal/da/publications/dolomite-fluorescence-redgreen-quotient(a52bf610-1c40-4380-9c25-e726337d0944).html https://doi.org/10.1016/j.coal.2014.12.005 |
long_lat |
ENVELOPE(-62.983,-62.983,-64.300,-64.300) ENVELOPE(-120.920,-120.920,56.450,56.450) |
geographic |
Arctic Canada Canadian Arctic Archipelago Lambda Montney |
geographic_facet |
Arctic Canada Canadian Arctic Archipelago Lambda Montney |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago |
op_source |
Haeri-Ardakani , O & Sanei , H 2015 , ' Dolomite fluorescence Red/Green quotient : A potential new thermal maturity indicator ' , International Journal of Coal Geology , vol. 137 , pp. 165-171 . https://doi.org/10.1016/j.coal.2014.12.005 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.coal.2014.12.005 |
container_title |
International Journal of Coal Geology |
container_volume |
137 |
container_start_page |
165 |
op_container_end_page |
171 |
_version_ |
1766303032492949504 |