Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA
This study is focused on mineralogical and chemical characterization of an authigenic carbonate rock (crust) collected at a recently discovered cold seep on the US North Atlantic continental margin. X-ray diffraction (XRD) and scanning electron microscopy (SEM) indicate that the carbonate rock is co...
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ftmdpi:oai:mdpi.com:/2075-163X/9/3/138/ 2023-08-20T04:08:16+02:00 Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA Rinat Gabitov Chiara Borrelli Jacob Buettner Brenda Kirkland Adam Skarke Dustin Trail Brittany Garner Maurice Testa Mahnaz Wahidi Christopher Hoff Salavat Khasanov Giuliana Panieri Roobanvenkatesh Thirumalai Jay Thomas Jeremy Weremeichik Irina Zverkova agris 2019-02-26 application/pdf https://doi.org/10.3390/min9030138 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/min9030138 https://creativecommons.org/licenses/by/4.0/ Minerals; Volume 9; Issue 3; Pages: 138 authigenic carbonates aragonite methane seep magnesium sulfur strontium barium carbon isotopes Text 2019 ftmdpi https://doi.org/10.3390/min9030138 2023-07-31T22:04:27Z This study is focused on mineralogical and chemical characterization of an authigenic carbonate rock (crust) collected at a recently discovered cold seep on the US North Atlantic continental margin. X-ray diffraction (XRD) and scanning electron microscopy (SEM) indicate that the carbonate rock is composed of microcrystalline aragonite cement, white acicular aragonite crystals (AcAr), equant quartz crystals, small microcrystalline aluminosilicates, and trace amounts of iron sulfide microcrystals. Element/calcium ratios were measured with laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) using a calcite standard, which was prepared by annealing USGS certified carbonate powder (MACS-3). The occurrence of microscopic, non-carbonate inclusions precluded evaluation of trace elements in the aragonite cement, but allowed for in situ analysis of AcAr crystals. Carbon and oxygen isotopes were analyzed via isotope ratio mass spectrometry (IRMS) and expressed as δ13C and δ18O. Low δ13C values suggest that aragonite grew as a result of anaerobic oxidation of methane and observed δ18O values indicate that the temperature of aragonite crystallization was 1.7–1.9 °C. Text North Atlantic MDPI Open Access Publishing Minerals 9 3 138 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
authigenic carbonates aragonite methane seep magnesium sulfur strontium barium carbon isotopes |
spellingShingle |
authigenic carbonates aragonite methane seep magnesium sulfur strontium barium carbon isotopes Rinat Gabitov Chiara Borrelli Jacob Buettner Brenda Kirkland Adam Skarke Dustin Trail Brittany Garner Maurice Testa Mahnaz Wahidi Christopher Hoff Salavat Khasanov Giuliana Panieri Roobanvenkatesh Thirumalai Jay Thomas Jeremy Weremeichik Irina Zverkova Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA |
topic_facet |
authigenic carbonates aragonite methane seep magnesium sulfur strontium barium carbon isotopes |
description |
This study is focused on mineralogical and chemical characterization of an authigenic carbonate rock (crust) collected at a recently discovered cold seep on the US North Atlantic continental margin. X-ray diffraction (XRD) and scanning electron microscopy (SEM) indicate that the carbonate rock is composed of microcrystalline aragonite cement, white acicular aragonite crystals (AcAr), equant quartz crystals, small microcrystalline aluminosilicates, and trace amounts of iron sulfide microcrystals. Element/calcium ratios were measured with laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) using a calcite standard, which was prepared by annealing USGS certified carbonate powder (MACS-3). The occurrence of microscopic, non-carbonate inclusions precluded evaluation of trace elements in the aragonite cement, but allowed for in situ analysis of AcAr crystals. Carbon and oxygen isotopes were analyzed via isotope ratio mass spectrometry (IRMS) and expressed as δ13C and δ18O. Low δ13C values suggest that aragonite grew as a result of anaerobic oxidation of methane and observed δ18O values indicate that the temperature of aragonite crystallization was 1.7–1.9 °C. |
format |
Text |
author |
Rinat Gabitov Chiara Borrelli Jacob Buettner Brenda Kirkland Adam Skarke Dustin Trail Brittany Garner Maurice Testa Mahnaz Wahidi Christopher Hoff Salavat Khasanov Giuliana Panieri Roobanvenkatesh Thirumalai Jay Thomas Jeremy Weremeichik Irina Zverkova |
author_facet |
Rinat Gabitov Chiara Borrelli Jacob Buettner Brenda Kirkland Adam Skarke Dustin Trail Brittany Garner Maurice Testa Mahnaz Wahidi Christopher Hoff Salavat Khasanov Giuliana Panieri Roobanvenkatesh Thirumalai Jay Thomas Jeremy Weremeichik Irina Zverkova |
author_sort |
Rinat Gabitov |
title |
Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA |
title_short |
Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA |
title_full |
Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA |
title_fullStr |
Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA |
title_full_unstemmed |
Characterization of Carbonate Crust from a Recently Discovered Methane Seep on the North Atlantic Continental Margin of the USA |
title_sort |
characterization of carbonate crust from a recently discovered methane seep on the north atlantic continental margin of the usa |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/min9030138 |
op_coverage |
agris |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Minerals; Volume 9; Issue 3; Pages: 138 |
op_relation |
https://dx.doi.org/10.3390/min9030138 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/min9030138 |
container_title |
Minerals |
container_volume |
9 |
container_issue |
3 |
container_start_page |
138 |
_version_ |
1774720444023177216 |