FN Archimer Export Format
PT J
TI Seafloor Massive Sulfides from the Northern Equatorial Mid-Atlantic Ridge: New Discoveries and Perspectives
BT 
AF CHERKASHOV, G.
   POROSHINA, I.
   STEPANOVA, T.
   IVANOV, V.
   BEL'TENEV, V.
   LAZAREVA, L.
   ROZHDESTVENSKAYA, I.
   SAMOVAROV, M.
   SHILOV, V.
   GLASBY, G. P.
   FOUQUET, Yves
   KUZNETSOV, V.
AS 1:1;2:1;3:1;4:2;5:2;6:2;7:2;8:2;9:2;10:3;11:4;12:5;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;
C1 VNIIOkeangeol, St Petersburg 190121, Russia.
   Polar Marine Geosurv Expedit, Lomonosov, Russia.
   Kola Res Ctr, Murmansk Region, Russia.
   IFREMER, Plouzane, France.
   St Petersburg State Univ, St Petersburg, Russia.
C2 VNIIOKEANGEOL, RUSSIA
   POLAR MARINE GEOSURV EXPEDIT, RUSSIA
   KOLA RES CTR, RUSSIA
   IFREMER, FRANCE
   UNIV ST PETERSBURG STATE, RUSSIA
SI BREST
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
IF 0.452
TC 43
UR https://archimer.ifremer.fr/doc/00013/12413/9800.pdf
LA English
DT Article
CR GEOFAR
   SERPENTINE
   TAMMAR
BO Le Noroit
   Pourquoi pas ?
   Le Nadir
DE ;hydrothermal systems;mid-atlantic ridge;seafloor massive sulfides
AB In addition to the two new hydrothermal fields Krasnov (l6 degrees 38' N) and Ashadze (13 degrees N) discovered in 2003-2004, some later discoveries were made in the Northern Equatorial segment of the Mid-Atlantic Ridge (MAR). Two new major seafloor massive sulfide (SMS) deposits: Semyenov (13 degrees 31' N) and Zenith-Victory (20 degrees 08' N), as well as the now extended Puy des Folles hydrothermal field (20 degrees 30.5' N), provide enough data to make conclusions about the general characteristics of SMS deposits in the northern equatorial MAR environment. Parameters of SMS deposits, such as their distribution, geological setting, morphology, composition and age, are discussed in this paper. A majority of studied SMS deposits (Ashadze, Logatchev, Semyenov) are associated with uplifted lower crust and mantle rocks (oceanic core complex, or OCC) at the MAR segments with asymmetric mode of accretion. OCC is tectonically uplifted along with detachment faults, which exhume deep-seated rocks onto the seafloor. Detachment faults, in turn, could be the conduits for the circulation of seawater and discharge of hydrothermal fluids. Gabbro-peridotite hosted deposits are characterized by high concentrations of copper, gold and cobalt. The relationship between the size of the deposits and their age is documented.
PY 2010
SO Marine Georesources & Geotechnology
SN 1064-119X
PU Taylor & Francis Inc
VL 28
IS 3
UT 000281363800004
BP 222
EP 239
DI 10.1080/1064119X.2010.483308
ID 12413
ER

EF