CAJ | 학술논문

南大西洋中脊26°S热液区是我国科学家在南大西洋中脊发现的热液区，这是目前为止在大西洋中脊发现的位置最南的热液区。本文应用成因矿物学方法，对取自热液区的烟囱体碎块进行了研究。结果表明，烟囱体由外向内发育3种类型硫化物：富Fe型、Fe-Cu型以及富Cu型硫化物。富Fe型硫化物的矿物组合为黄铁矿-白铁矿；Fe-Cu型硫化物的矿物组合为黄铁矿-黄铜矿；富Cu型硫化物的矿物组合为黄铜矿-黄铁矿。参照Graham的太平洋海隆烟囱理想生长模式，推测26°S热液区烟囱发育较为成熟。
남대서양중척26°S열액구시아국과학가재남대서양중척발현적열액구，저시목전위지재대서양중척발현적위치최남적열액구。본문응용성인광물학방법，대취자열액구적연창체쇄괴진행료연구。결과표명，연창체유외향내발육3충류형류화물：부Fe형、Fe-Cu형이급부Cu형류화물。부Fe형류화물적광물조합위황철광-백철광；Fe-Cu형류화물적광물조합위황철광-황동광；부Cu형류화물적광물조합위황동광-황철광。삼조Graham적태평양해륭연창이상생장모식，추측26°S열액구연창발육교위성숙。
The 26°S hydrothermal field on South Mid-Atlantic Ridge was found by Chinese scientists ,it is the southest hydrothermal field discovered on Mid-Atlantic Ridge .This stydy show that ,according to the mineral assemblages ,sulfides of chimney from this field ,can be classified into three distinct types :Fe-rich ,Fe-Cu type and Cu-rich type .The Fe-rich type sulfide is dominated by pyrite-marcasite assemblages ;the Fe-Cu type is dominated by pyrite-chalcopyrite assemblages ;and the Cu-rich type si by chalcopyrite-pyrite .Accoding the growth history of a model (ideal) chimney of EPR hydrothermal ,chimney from 26°S hydrothermal field is relatively mature .