* Currently at the FCUL; Former Associate Professor (ISE, USJ); PhD in Geology (Crystallography, Mineralogy and Metallogeny; Univ. Lisbon)

 

RESEARCH INTERESTS

Marine geochemistry, mineralogy and petrology; Deep-sea hydrothermal systems and associated deposits; Magmatic and Ultramafic systems; Isotopic geochemistry and geochronology.

OCEANOGRAPHIC CRUISES
(Marine fieldwork)

  • Luso2009 – Scientist in on board of NRP Almirante Gago Coutinho (PT) with the ROV (Remotely Operated Underwater Vehicle) Luso; Governmental Task Group for the Portuguese Continental Shelf Extension (EMEPC); Azores island slopes geomorphology and geology and scientific studies for the Portuguese continental shelf extension in the Atlantic Ocean. Coordinator of survey dives at AMAR region.
  • Luso2008 – Scientist in on board NRP Almirante Gago Coutinho (PT) with the ROV Luso; Scientific studies for the Portuguese continental shelf extension in the Atlantic Ocean; Governmental Task Group for the Portuguese Continental Shelf Extension (EMEPC); Coordinator of the sediment corers sampling PI: Manuel Pinto de Abreu e Nuno Lourenço.
  • H2Deep (leg)- Scientist and gravity core drilling coordinator at leg 2, on board of G.O. SARS (Norway) with the ROV Bathysaurus; Survey of hydrothermal systems from Ultraslow spreading ridges. European cruise (EuroMARC Project).
  • CD167 (SEAHMA) – Scientist and gravity core drilling coordinator on board of RRS Charles Darwin (UK). The aim of the cruise was the geological and geophysical survey of the Saldanha hydrothermal system (Mid-Atlantic Ridge).
  • SEAHMA 1 – Scientist on board of Atalante (IFREMER) with ROV Victor. MAR seafloor research Portuguese mission (Seahma project/FCT); Participation as researcher and responsible of ROV research dives (FCUL).
  • SALDANHA – Scientist on board of NADIR (IFREMER), with a deep diving submersible – NAUTILE  (IFREMER). MAR seafloor research. Participation as researcher and coordinator of one of the Nautile submersible dives. Portuguese and French mission financed by Portuguese Government funds (Programa PRAXIS XXI).
  • PLAMIBEL I – Junior scientist on board Auriga oceanographic vessel. Portuguese mission (IH – Portuguese Hydrographic Institute) with collaboration of Bordéus University. Research participation. Study of the Portuguese continental shelf between Douro and Minho rivers and the turbiditic plumes connected with rivers from northern.

SELECTED RESEARCH PROJECTS

Science Spreading Projects:

SELECTED PUBLICATIONS

SELECTED COMMUNICATIONS

  • Costa P, Moreira A, Dias Á A, Santos R, Duarte J, Quartau R (2023) Seafloor Sediments of the Gigante Seamount Complex, Mid-Atlantic Ridge: Insights into Mineralogy, Geochemistry, and Possible Signatures of Hydrothermal Activities. Goldshmidt2023, 11 July 2023 (Poster): https://conf.goldschmidt.info/goldschmidt/2023/meetingapp.cgi/Paper/20264
  • Dias Á A, Relvas JMRS, Marques AF, Qiu W, Barriga FJAS, Ribeiro L & Calado A (2022) Variability of the hydrothermal fields within the Portuguese seafloor (MAR) Goldschmidt2022:https://doi.org/10.46427/gold2022.11686
  • Qiu W, Dias Á A, Costa IMA & Barriga F (2022) The evolution of sulfur isotope in hydrothermal fluids along the formation of chimney of Menez Gwen (MAR): mineralization implications Goldschmidt2022:https://doi.org/10.46427/gold2022.10761
  • Costa P & Dias Á A (2022) Geochemical and mineralogical investigations of seafloor oxyhydroxides deposits collected in Mid-Atlantic Ridge hydrothermal fields Goldschmidt2020:https://doi.org/10.46427/gold2022.11676 
  • Relvas JMRS; Barriga, FJAS; Pinto A; Marques AF; Carvalho J; Dias Á A (2022) “Replacement or plume fallout? Both, please! Evidence from active and fossil VMS systems.”. Paper presented in 16th SGA Biennial Meeting 2022 The critical role of minerals in the carbon-neutral future, New Zeland
  • Dias Á A, Qiu W, Barriga FJAS & Tao C (2020) Sub-Seafloor Sulfide Mineralization in the Saldanha Hydrothermal Field, Mid-Atlantic Ridge (MAR). Goldschmidt2020: https://doi.org/10.46427/gold2020.44
  • Qiu W, Dias ÁA, Costa IMA & Barriga F (2020) Ore-Forming Process of the Menez Gwen Hydrothermal Field: In situ S Isotopes and Trace Metals Constraints Goldschmidt2020: https://doi.org/10.46427/gold2020.2143 
  • Costa P, Dias Á A (2020) Oxyhydroxide Hydrothermal Crusts from Saldanha Hydrothermal Field Goldschmidt2020: https://doi.org/10.46427/gold2020.478
  • Dias Á A (2019) Diving into the unknown: robotics as tools to study the deep-sea. IROS
  • Costa P and Dias Á A (2019) Hydrothermal Fe-Mn deposits from low-temperature systems of the Mid-Atlantic Ridge. InterRidge Workshop on Hydrothermal Ore-forming Processes, Hangzhou
  • Qiu W, Dias Á A, Barriga F, Tao C (2019) Sulfide mineralization of the Saldanha hydrothermal field (MAR): constraints from sulfur isotope in-situ microanalysis. InterRidge Workshop on Hydrothermal Ore-forming Processes, Hangzhou.
  • Dias Á A, Costa P. Marques AF, Ribeiro L, Madureira P, Calado A, Gonçalves E & Morato T (2019) Geochemistry of Fe-Si-(Mn) Chimneys from Luso Vent Field, MAR. Goldschmidt 2019. 10i, 445. Barcelona. https://goldschmidt.info/2019/abstracts/abstractView?id=2019003072
  • Quelhas P, Dias Á A, Mata J & Wayne Davis D (2019) Geochronological, geochemical and petrographic constraints on incremental pluton growth: the case of Macao granitic suite. Goldschmidt 2019. 06g, 258. Barcelona.  https://goldschmidt.info/2019/abstracts/abstractView?id=2019004459
  • P. Quelhas, J. Mata, U.T. Lou, R. Borges, M.L. Ribeiro, Dias Á A(2017) New geochemical constraints on I-type granites of Macao: evidences for fractional crystallization and petrogenetic affinities with Jurassic-Cretaceous granites in SE ChinaGoldschmidt2017 . Paris
  • Milinovic J, Barriga F, Dias Á, Martins S, Pereira M & Janeiro A (2017) Offshore Assessment of Minerals in Deep-Sea Sediments from the TAG-Area (26°N, 44°W)Goldschmidt2017. Paris.
  • Quelhas P M, Mata J, Lou U T, Ribeiro M R and Dias A Á (2016) Mesozoic Granitic Magmatism in Macao, Southeast ChinaAGU Fall meeting 12-16 December 2016, San Francisco, USA
  • Dias Á A, Quelhas P, Lou U, Mata J & Ribeiro M L (2016) Petrology and Geochemistry of Granitic Rocks from Macao. Goldschmidt2016. 61, 05c – 665. Yokohama, Japan. July. http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/665.pdf
  • Dias, Á A and Barriga, F (2015) Saldanha hydrothermal field: the role of the sediment-cover in the preservation of ore-forming mineralsThird InterRidge Theoretical Institute:Magmatic and Tectonic Processes and Seabed Resources at Mid-Ocean Ridges; Hangzhou, China. Sept.
  • Cruz M I, Marques F A M, Dias Á S, Pedersen R, Barriga  F J A S (2014) Sr and Nd isotopic composition of Jan Mayen and Loki’s Castle: a progress report. 43rd Underwater Mining Institute · Sept.
  • Cruz MI, Marques A F, Dias Á S, Pedersen R, Relvas J M R S, Barriga F J A S, (2013) Sulfide Sites in the Arctic Ocean: Jan Mayen and Loki’s CastleMineralogical MagazineGoldschmidt2013, April.
  • Cruz M I, Dias Á S, , Pedersen R.B, Relvas J M R S, Fonseca RBarriga F J A S (2013) Sulphide mineralization in Arctic seafloor hydrothermal fields: extending the European exploration area to the Far North, ERA-MIN. Mar.
  • Relvas, J M R S, Barriga, F J A S, Costa, I M R, Cruz, I M, Dias, Á S, Marques, A F A, Pinto, AMM (2012). Massive Sulfide Mineralization in Relic and Modern Seafloor. Ophiolite and Related Ore and Industrial Minerals, Karadeniz Technical University, Department of Geological Engineering, Trabzon, Turkey, 16-22 May.
  • Dias Á S, Cruz I, Fonseca R, Barriga F J A S, Pedersen, R B (2011) Trollveggen Vent Field: Mineralogy and geochemistry of chimneys and deposits, and evidence of hydrothermal activity in far-field cores. Final EuroMARC conference, Feb.
  • Cruz MI, Dias Á S, Carvalho C, Barriga F J A S, Relvas J M R S, Fonseca R, Pedersen R (2011)  Loki’s Castle Arctic Vents and Host Sediments: Mineralogy and Geochemistry, Final EuroMarc Conference, Feb.
  • Cruz M I, Dias Á S, Relvas J M R S, Carvalho C, Fonseca R, Pedersen R.B, Barriga F J A S (2011) Geochemistry of the Artic Loki’s Castle hydrothermal vent products. Goldschmidt Conference Abstracts. Mineralogical Magazine 75:p708. http://goldschmidtabstracts.info/2011/708.pdf.
  • Dias Á S, Cruz I, Fonseca R, Barriga F J A S, Pedersen, R B (2010) Mineralogy and Geochemistry from Trollveggen Vent Field Chimneys and Metalliferous Sediments (Mohns Ridge, West Jan Mayen Fracture Zone at 71°N). American Geophysical Union (AGU), OS21A-1483. Eos, Transactions, American Geophysical Union, AGU’s online supplement http://www.agu.org/pubs/eos-news/supplements/
  • Barriga F J A S, Fonseca R,Dias Á A, Cruz I M, R Carvalho C, Relvas J M, Pedersen R B (2010) Acid-Extractable Geochemistry from the Loki’s Castle Hydrothermal Field, Norwegian Sea at 74 degrees N (South Knipovich Ridge). American Geophysical Union ( AGU), OS21A-1484 Eos, Transactions, American Geophysical Union, AGU’s online supplement http://www.agu.org/pubs/eos-news/supplements/
  • Cruz MI, Barriga FJAS, Carvalho C,Dias Á A, Fonseca R, Relvas JMRS, Pedersen R (2010) Loki’s Castle Arctic vents and host sediments: Arctic large scale hydrothermal fields. Ciencia 2010. Lisbon, Jully, 2010.
  • Barriga FJAS, Carvalho C, Cruz MI, Dias Á A, Fonseca R, Relvas JM, Pedersen R (2010) Preliminary Results on Mineralogy and Geochemistry of Loki’s Castle Arctic Vents and Host Sediments.Geophysical Research Abstract. Vol12, EGU2010-11970, European Geosciences Union (EGU) General Assembly 2010
  • Barriga F J A S, Fonseca, Dias Á A, Cruz I M, R Carvalho C, Relvas J M, Pedersen R B (2010) Acid-Extractable Geochemistry from the Loki’s Castle Hydrothermal Field, Norwegian Sea at 74 degrees N (South Knipovich Ridge). American Geophysical Union (AGU), OS21A-1484.Eos, Transactions, American Geophysical Unionhttp://www.agu.org/pubs/eos-news/supplements/
  • Barriga F J A S, Carvalho C, Cruz I M, Dias Á S, Fonseca R, Relvas J M, Pedersen R B (2010) Mineralogy and geochemistry of Loki’s Castle Arctic vents and host sediments: preliminary results.EGU (European Geosciences Union) General Assembly. Vienna, Austria.
  • Barriga F, Fouquet Y, Almeida A, Biscoito M, Charlou JL, Costa R, Dias Á A, et al. (1998) Discovery of Saldanha Hydrothermal Filed on the FAMOUS segment of the MAR (36º30’N). Eos, Transactions American Geophysical Union. 79(45):67
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