RATE OF ACCRETION OF MANGANESE CRUST FROM THE SOUTH CHINA SEA BASIN AND ITS GEOCHEMICAL CHARACTERISTICS

Xia Ming; Zhang Chenhui

characteristics of the studied area. Excess ²³⁰Th concentrations in the uppermost layer(1mm) of the crust indicate an upper limit of growth rate of 4 .1 mm/l0⁸yr. This rate of accreti一on for the crust is similar to that for 6A nodule sample from the easter part of the Pacific Ocean.Uniform and low rates of the crust growth from the South China Sea and th nodules forom various oceanic basins suggest that a similar controlling mechanism may take place during their formations in the marine environment.

RATE OF ACCRETION OF MANGANESE CRUST FROM THE SOUTH CHINA SEA BASIN AND ITS GEOCHEMICAL CHARACTERISTICS

Institute of Geology, Academia Sinica

Received Date: 1982-07-16

Publish Date: 1983-06-10

Abstract: characteristics of the studied area. Excess ²³⁰Th concentrations in the uppermost layer(1mm) of the crust indicate an upper limit of growth rate of 4 .1 mm/l0⁸yr. This rate of accreti一on for the crust is similar to that for 6A nodule sample from the easter part of the Pacific Ocean.Uniform and low rates of the crust growth from the South China Sea and th nodules forom various oceanic basins suggest that a similar controlling mechanism may take place during their formations in the marine environment.

HTML

Reference (1)

[1]

(1)夏明等，袖系方法鉴定因际际准样结果，中国科学，(1979)，8，792-7990

(2}契尔登采夫，234U及其在地质学If1的应用。1975,原子能出版社，258.

(3) Bender M.L.et al..Manganesc nodules:their evolution, Science.151(1966)，3708, 325-328.

(4) Bende M.L.，KU T.Land Broecker W.S.Accumulation rates of manganese in Pelagic sediments and nodules.Earth Planet.Sci.Lett.，8(1970)，2，113一1-IS.

(5)Guichard F.、Reyss J.L.and Yokoyama Y.Grovsth rales of manganese nod-ues measured with 10 Be and 26 Nature, 272(1978)，155-156.

(6)Immel R.,and Osmond J.K.Micromanganese nodules in deepsca sediments，Uranium一isotopic esidence for postdeposltionaf origin.Chemicul Geology,18(196)，263-2.2,

(7)Kaufman A .，The232Th concentration of surface ocean water.GeochimCosmochi m.Acfa, 33(1969)，6，717-724.

(8) Krishnaswami S.and Cochran J.K.，Uranium and thorium series nuclides in oriented ferromanganese nodules:growth rates, turnov-er times and nu-elide behavior.Earth Planet.Sci.Lett.,40(1978)，1，45-62.

(9) Krishnaswami Sand Cochran J.K..Time Scales of Deep-Sea Ferromang-anew Nodulc Growth Based on 10Be and Alpha Trach Distributions and their Relation to Urrznium Decac Series Measurements.CoIIoque Inte-rnutional du C.N.R.S(1978)，No.289, 1一13.

(10)Ku T.L .U ranium series disequilibrium in deep sediments.Ph.D.thesis Columbia Universitv, New- York, 157.

(11) Ku T.L.and Broeckcr N.S.Uranium，thorium and protactinium in a man-ganese nodule.Earth Planei.Sci.Left, 2(196i)，317-320.

(12)Ku T. L.，Radiochemical studies on manganese nodules of deep-sea origin.Deep-Soa Research, 16(1969)，625-637.

(13)Ku T.L.Rates of accretion.In marine Manganesc Deposits(1977)(ed.G.P.Glasl,)，219-267 ,Elsevier,N.Y.

(14)Ku T.Land Hnauss Iv.G.Radioactive disequiliorium in fissure一filling ma-terial and its implication in dating of manganese nodules.Colloque Intern-ational du C.N.R.S.No,289, sur la Genese des Nodules de Manganese，1979,Gif一Sur-Yvette, 289一293.

(15)Ku T.L.,Omura A.and Chen P.S.10Be and U一series isotopes in Manganese Nodules from the central Vorth Pacific，Marine Geology and Oceanography of the Pacific ?Manganese Vodule Frovince，1979.(ed.Brischoff J.L.).791-814.

(16)Laloa C.，Ku T.L.，Brichet E.et al.，TECHNO Encrustation Part 1:Radiometric studies. Colloque International du C.V.R.S.No.289, La Genese des Vodules de Manganese, 1979, 261一268.

(17)Moore W.S.，The thorium isotope content ofoceanwater.Earth Planet.Sci.Lett.,53(1981)，3，417一926.

(18)Кузнецов Ю.В.Радцохрнодогця Океана.1976,Атомцздат,280.

(19）Чердынцев В.В.Ц ДР,Происхожцеие железо-марганцевых конкреций Тпхого Океана по данным о раднонзотопах. Геохимня,(1971).3,339-354.

RATE OF ACCRETION OF MANGANESE CRUST FROM THE SOUTH CHINA SEA BASIN AND ITS GEOCHEMICAL CHARACTERISTICS

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related