Metal-bearing molten sulfur collected from a submarine volcano: Implications for vapor transport of metals in seafloor hydrothermal systems

Geology ◽  
2011 ◽  
Vol 39 (4) ◽  
pp. 351-354 ◽  
Author(s):  
J. Kim ◽  
K.-Y. Lee ◽  
J.-H. Kim
Keyword(s):  
Hydrothermal Systems ◽  
Vapor Transport ◽  
Submarine Volcano ◽  
Molten Sulfur

scholarly journals Rare Earth Elements Vapor Transport By Fumaroles in the Post Caldera Complex of Weh Island Submarine Volcano, Aceh Province Northern Sumatra

2017 ◽  
Vol 31 (2) ◽  
Author(s):  
Hananto Kurnio ◽  
Ediar Usman
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Inductively Coupled Plasma ◽  
Single Channel ◽  
Hydrothermal Activity ◽  
Geothermal Field ◽  
Vapor Transport ◽  
Normal Faults ◽  
Submarine Volcano ◽  
Aceh Province

Research found out that fumaroles and solfataras are rare earth element (REE) vapor transport agents in Weh Island submarine volcano – Aceh. Shallow high resolution single channel seismic was used to map the distribution of seafloor fumaroles surrounding the submarine volcano. Samples of REE depositions were taken from Jaboi geothermal field, and mineralization zone at Pria Laot coast; as well as seafloor surrounding active fumaroles by divers.  Rare earth elements (REE) were analysed using ICP – MS (inductively coupled plasma – mass spectrometry) with detection limits ranged from 0.05 to 0.1 ppm (part per million).The central part of Weh submarine volcano is the most active REE deposition. This area is build by normal faults and grabens oriented north – south of open character which acted as channel for hydrothermal fluids reaching seafloor surface.Some REE abundances such as La, Ce, Pr, and Nd due to its location in the central of hydrothermal activity. This proximity explains such abundances of this andesitic component sample of agglomerate.  Keywords: REE, vapor transport, fumaroles, Weh Island, Aceh.Penelitian mendapatkan bahwa fumarole dan solfatara adalah sebagai agen transportasi uap Logam Tanah Jarang (LTJ) di gunungapi bawah laut Pulau Weh – Aceh, Provinsi Nanggroe Aceh Darussalam (NAD). Seismik saluran tunggal dangkal resolusi tinggi digunakan untuk memetakan fumarole dasarlaut di sekitar gunungapi bawah laut tersebut.Bagian tengah gunungapi bawah laut Pulau Weh merupakan area paling aktif pengendapan LTJ. Bagian ini dibangun oleh sesar-sesar normal dan graben berorientasi utara – selatan dengan karakter terbuka sebagai saluran untuk fluida hidrotermal mencapai permukaan dasar laut.Kelimpahan unsur tanah jarang La, Ce, Pr dan Nd dikarenakan posisinya pada pusat aktivitas hidrotermal. Kedekatan dengan pusat hidrotermal ini menjelaskan kelimpahan REE dari contoh komponen andesitic yang diambil dari aglomerat ini.Kata kunci: UTJ (Unsur Tanah Jarang), transportasi uap, fumarol, PulauWeh, Aceh.

Effect of surfactants and their mixtures on wettability of sulfide minerals by molten sulfur

2019 ◽  
Author(s):  
El'vira Kolmachikhina ◽  
◽  
Ekaterina Ryzhkova ◽  
Dar'ya Dmitrieva ◽  
◽  
...  
Keyword(s):  
Sulfide Minerals ◽  
Molten Sulfur

Multiple Donors in Zinc Oxide Substrates

2002 ◽  
Vol 719 ◽  
Author(s):  
K. Thonke ◽  
N. Kerwien ◽  
A. Wysmolek ◽  
M. Potemski ◽  
A. Waag ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Chemical Vapor ◽  
Binding Energies ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Oxide Substrates ◽  
Multiple Donors ◽  
Major Donors ◽  
Available Zinc ◽  
Transport Technique

AbstractWe investigate by photoluminescence (PL) nominally undoped, commercially available Zinc Oxide substrates (from Eagle Picher) grown by seeded chemical vapor transport technique in order to identify residual donors and acceptors. In low temperature PL spectra the dominant emission comes from the decay of bound exciton lines at around 3.36 eV. Zeeman measurements allow the identification of the two strongest lines and some weaker lines in-between as donorrelated. From the associated two-electron satellite lines binding energies of the major donors of 48 meV and 55 meV, respectively, can be deduced.

Hydrothermal systems of the Cascade Range, north-central Oregon

1994 ◽  
Author(s):  
S.E. Ingebritsen ◽  
R.H. Mariner ◽  
David R. Sherrod
Keyword(s):  
Hydrothermal Systems ◽  
Cascade Range ◽  
North Central
Sign in / Sign up

Export Citation Format

Share Document