SeaMin

September 20, 2021

SeaMin

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WELCOME to the SeaMin project – In-situ trace elemental and isotopic constraints on modern seafloor massive sulfide mineralization – 现代海底块状硫化物成矿作用的原位微量元素和同位素限制

The project brings together researchers from Macau SAR, Mainland China, Europe and Australia, highly experienced in the study of seafloor sulfide massive (SMS) deposits. It is proposed an innovative approach for the characterization of SMS deposits by applying state-of-the-art in-situ elemental and isotopic techniques to seafloor sulfide ores and sulfide-bearing host rocks to investigate the complex ore-forming processes of these deposits.

This project will be focused on micrometer- to sub-micrometer-scale elemental and isotopic signatures of different sulfides deposits collected from deep-sea hydrothermal vent fields at the Mid-Atlantic Ridge to characterize the processes that form SMS deposits at the slow spreading Mid-Atlantic Ridge. This project is organized into three tasks: (1) investigation of micrometer- to sub-micrometer-scale elemental variations within sulfides and related metal deportment; (2) tracing micrometer-scale isotopic variations within sulfides and fluid evolution; (3) development of a detailed genetic model for massive sulfide mineralization at the Mid-Atlantic Ridge.

FDCT Project reference: 0041/2021/A1 (2021-2024)

RESEARCH TEAM

Principal Investigator (PI); ISE, USJ, Macau (PhD)

Team member (TM); ISE, USJ, Macau (PhD)

 Team member (TM); GEOMAR Kiel, Germany (PhD)

Katy Evans

Team member (TM); Curtin University (PhD)

Yafei Wu

Team member (TM); CUG, China (PhD)

Pedro Costa

PhD Student and Research Assistant (MSc)

Collaborations

GEOMAR, Kiel, Germany

IPMA

IPMA

CUG

September 26, 2019

Public lecture: Hydrothermal fields from the Mid-Atlantic Ridge – The role of brecciate rocks in ore formation

By Isabel Costa (INCITE and IDL-FCUL)

Lucky Strike and Menez Gwen hydrothermal fields are located in the Mid-Atlantic Ridge (MAR), southwest of the Azores islands. In the areas surrounding the active sites, the alteration processes affecting basaltic rocks are prominent and form hydrothermal breccias by the circulation of low temperature hydrothermal fluids in diffuse vents. These breccias play an important role in the protection of subseafloor hydrothermal sulphide deposits by forming an impermeable cap due to the high content in siliceous material. Since the discovery and description of recent mineralized submarine hydrothermal deposits, comparison with ancient volcanic massive sulphide deposits is appropriate. Thus, the model for the formation of the Atlantic brecciated rocks can explain some of the processes taking place in the early phase of development of old deposits, where equivalent siliceous material is found in the hanging wall of the ore bodies.

 

December 4, 2018

Public lecture: Seafloor Mineral Resources

Public lecture: SEAFLOOR MINERAL RESOURCES by Prof. Vesselin Dekov

on 4th Dec., 2018, 6:00pm

@ ISE, USJ – Institute of Science and Environment of the University of Saint Joseph. Speakers´ Hall. Rua de Londres 106, Macau, China. 中國澳門倫敦街一零六號(環宇豪庭三樓)

Abstract

The lecture will discuss the main characteristics, types, mode of formation, occurrence and economic value of the major seafloor mineral resources. It will comment on the mineral potential of the continental margins and formation of marine placers, on the formation and possible mining of the polymetallic Mn-nodules at the abyssal plains, on the deposition of Co-rich Fe-Mn-crusts at the seamounts, and on the spectacular polymetallic hydrothermal sulphides precipitated at mid-ocean ridges, back-arc basins and volcanic arcs. The lecture is designed for students, researchers but also for non-professionals.

 

 

 

InterRidge Theoretical Institute on “Magmatic and Tectonic Processes and Seabed Resources at Mid-Ocean Ridges”

November 1, 2018

Start: 09/25/2015 00:00

End: 09/27/2015 23:59

Timezone: Asia/Shanghai

Third InterRidge Theoretical Institute on “Magmatic and Tectonic Processes and Seabed Resources at Mid-Ocean Ridges”

Location: Hangzhou, China

Date: September 25-27, 2015

The theoretical institute focuses on the first two themes of the InterRidge Third Decadal Plan with the chairs and co-chairs for each of the two themes who will lead the scientific programs of the theoretical institute which is organized by the InterRidge Office.

Theme One: Magmatic and Tectonic Processes

Dr. Jian Lin (WHOI, USA), Chair

Dr. Marcia Maia (CNRS, France), Co-chair

Dr. Nobukazu Seama (Kobe University, Japan), Co-Chair

Theme Two: Seabed Resources

Dr. Bramley J. Murton (Southampton, UK), Chair

Dr. Marius Tivey (Whoi, US), Co-Chair

Dr. Sergei Silantyev (Russia), Co-Chair

Ágata Alveirinho Dias (Á. A. Dias)

November 25, 2014
AUTHOR IDENTIFIERS

FORMATION: 
PhD in Geology (Crystallography, Mineralogy and Metallogeny), UL; MSc in Dynamic Geology, FCUL; Graduation in Geology, FCUL.

POST-DOC ACTIVITIES: 
(1) Arctic ultra-low spreading ridges: Jan Mayen and Loki’s Castle Hydrothermal fields, integrated in an European project (H2Deep-EUROCORES);

(2) Seafloor hydrothermal systems and associated mineral deposits in the Portuguese EEZ and adjacent areas (FCT: SFRH/BPD/68648).

CURRENTLY: Associate Professor and PI at ISE – USJ, Mo / Researcher at Instituto Dom Luis / Associated Lab

RESEARCH INTERESTS

Marine geochemistry, Mineralogy and Petrology; Deep sea hydrothermal systems and associated ore 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

SeaMar – InSituMin projectIn-situ trace elemental and isotopic constraints on modern seafloor massive sulfide mineralization – 现代海底块状硫化物成矿作用的原位微量元素和同位素限制 FDCT File No.: 0041/2021/A1, 2021-2024 (Principal Investigator)

SWIMAR – The role of ultramafic-hosted hydrothermal systems in the formation of seafloor deposits: comparison between SWIR and MAR fields/超基性岩系海底熱泉系統於海床熱液礦床扮演之角色:以 SWIR 及 MAR 熱泉系統相互比較為例. FDCT File No.: 002/2018/A1, 2018-2021 (Principal Investigator)

SMSMOR – Seafloor Massive Sulfides Resource along Mid-Ocean Ridges. InterRidge Working Group. on http://www.interridge.org/WG_SMS_MOR (team member)

Mag.I.C. – Petrology and Geochemistry of Igneous Rocks from Macao: Implications for the Crustal Evolution of Southern China. FDCT File No.: 043/2014/A1, 2015-2018.

BLUE MINING – Breakthrough Solutions for the Sustainable Exploration and Extraction of Deep Sea Mineral Resources. FP7 (7th research framework programme), EU Research Projects. Proj. ref.: 604500, 2014-2018

H2DEEPUltra-slow spreading and hydrogen-based deep biosphere (H2DEEP). EuroMARC Project  (ESF) No. ERAS-CT-2003-980409 of the European Commission. EUROCORES Program  – EuroMarc /0001/2007, 2007-2013

SEAHMA – Seafloor and Sub-seafloor Hydrothermal Modelling in the Azores Sea POCTI/P/MAR/15281/1999. 2001-2008 (team member)

MOMAR – Monitoring the Mid-Atlantic Ridge: MOMAR I, 1998; MOMAR II, 2002.

AMAR – Localização e Caracterização de Fontes Hidrotermais no Segmento AMAR: FCT (Praxis XXI) 1997-98

AMORES – Azores. Mid-Oceanic Ridge Ecosystem Studies: MAS3-CT95-0040) – EU – MAST III 1996 – 1998 (Team member)

MARFLUX / ATJ – Study of Hydrothermal Fluxes in the Azores Triple Junction – EU – 1994-1996

SCIENCE SPREADING PROJECTS:
“The Earth’s Last Frontier – Mysteries of the Deep Sea / 地球最後的樂土 – 深海探索 ” Macau Foundation project Ref. No. MF/2014/25, May 2015. (coordinator)

“Mesozoic magmatism of Macao and Hong Kong in the context of SE China geodynamics – 澳門 與香港的中生代岩漿作用”, Macau Foundation project Ref. No. MF/2016/08, March 2017 (Coordinator)

Others:

Wetland ecosystems as a nature-based solution for climate change adaptation and mitigation in Macao” CTW/2021 (team member)

Nature-based solutions for a cleaner and safer Macao” CTW/2020 (team member)

 

SELECTED PUBLICATIONS

SELECTED COMMUNICATIONS