ORCID Profile
0000-0002-6933-6384
Current Organisations
Khalifa University of Science and Technology
,
Università degli Studi di Padova
,
University of Adelaide Faculty of Sciences
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: EAGE Publications BV
Date: 04-06-2012
Publisher: Elsevier BV
Date: 08-2016
Publisher: Geological Society of London
Date: 30-08-2018
DOI: 10.1144/JGS2017-035
Publisher: Geological Society of America
Date: 17-04-2019
DOI: 10.1130/G46321.1
Publisher: Wiley
Date: 17-11-2021
DOI: 10.1111/BRE.12630
Abstract: The formation of carbonate build‐ups associated with seafloor methane vents – where microbially mediated sulphate‐dependent anaerobic oxidation of methane produces alkalinity – is well documented in modern marine environments and in the geologic record. However, the triggering event(s) behind the processes leading to hydrocarbon disequilibrium, seeping and consequent deposition of seep‐carbonates remain poorly constrained. This contribution characterises the salinity, geochemistry and temperature framework of a suit of fluid inclusions from hydrocarbon‐derived seep‐carbonate veins, collected from the Marmorito Formation in the Monferrato Hills, NW Italy. The datasets yield evidence of three different precipitation events, which comprise porous structures composed of well bladed calcites and aggregated spherules of aragonite. Fluid inclusions analysis shows the presence of a heterogeneous entrapment of immiscible fluids proving the paleo‐dissolution of a suite of complex hydrocarbons, which have a wide range of closing temperature starting at ca. 60°C. These physical and chemical conditions are considered to indicate seep‐carbonate deposition driven by disequilibrium of hydrocarbon‐bearing compounds at temperatures much warmer than the background ambient bottom waters (ca. 1 to 5°C) due to the influence of the Late Oligocene to Early Miocene tectonic compression at the junction of the southern Alps and Apennines.
Publisher: American Geophysical Union (AGU)
Date: 08-2015
DOI: 10.1002/2015TC003876
Publisher: Society of Exploration Geophysicists and American Association of Petroleum Geologists
Date: 16-09-2015
Publisher: Elsevier BV
Date: 12-2014
Publisher: EAGE Publications BV
Date: 30-04-2012
Publisher: Elsevier BV
Date: 2019
Publisher: Geological Society of America
Date: 02-2016
DOI: 10.1130/B31411.1
Publisher: Wiley
Date: 21-03-2022
DOI: 10.1111/SED.12989
Abstract: Aeolianites with a mixed clastic and carbonate detrital mineralogy are typical deposits of tropical coastal desert environments. These deposits are genetically related to transgressive–regressive cycles, with the shallow‐marine carbonate detrital component being deflated from the exposed seafloor during episodes of glacial sea‐level lowstands, transported and later accumulated onto more continental areas. A detailed investigation of the granulometric and petrographic properties of the Late Pleistocene to Holocene Ghayathi Formation in the United Arab Emirates provides a comprehensive numerical dataset that reveals the complex spatio‐temporal depositional and diagenetic evolution of a mixed siliciclastic–carbonate continental aeolianite. Fifty‐one thin sections and forty‐four rock s les of three sedimentary units (Madinat‐Zayed, Ghayathi and Fuwayrit formations) from the United Arab Emirates were analyzed for their grain‐size distribution, mineralogy and the bulk stable‐carbon and oxygen isotopic composition. Sorting, skewness and kurtosis of the grain‐size distributions provide evidence for a ergent aerodynamic behaviour between the carbonate and siliciclastic particles. The different grain‐size distributions between the inland and coastal sections of the Ghayathi Formation indicate that continental mixed clastic−carbonate aeolianites are affected by density‐driven selective transport and consequent traction sorting due to the nature of carbonate detritus. The transport decoupling of the different detrital components resulted in a ‘continental sorting’ effect, with the inland sections yielding layers characterized by a better sorted detritus than the coastal areas. All detritus originally composed of aragonite has been removed by dissolution during early meteoric diagenesis, with its shapes frequently preserved by micritic envelopes. The bulk stable‐isotope composition of the carbonate fraction reflects a decreasing degree of meteoric cementation from coastal to inland areas. The high complexity of the lateral and vertical distribution of the sedimentary, diagenetic and isotopic properties of continental mixed aeolianites, such as the Ghayathi Formation, highlights the problem of recognizing such deposits in the pre‐Quaternary sedimentary record.
Publisher: Elsevier BV
Date: 07-2017
Location: United Arab Emirates
Start Date: 2017
End Date: End date not available
Funder: Irish Research Council
View Funded Activity