Relationship between shape classification of Pacific seamount morphology and distribution of cobalt-rich crust resources

ZHANG Wei-yan; ZHANG Fu-yuan; HU Guang-dao; ZHAO Hong-qiao; YANG Sheng-xiong; CHENG Yong-shou; LI Shou-jun; ZHU Ke-chao

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Article Navigation > Haiyang Xuebao > 2008 > 30(6): 76-84

ZHANG Wei-yan, ZHANG Fu-yuan, HU Guang-dao, ZHAO Hong-qiao, YANG Sheng-xiong, CHENG Yong-shou, LI Shou-jun, ZHU Ke-chao. Relationship between shape classification of Pacific seamount morphology and distribution of cobalt-rich crust resources[J]. Haiyang Xuebao, 2008, 30(6): 76-84.

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Relationship between shape classification of Pacific seamount morphology and distribution of cobalt-rich crust resources

1.
Laboratory of Submarine Geosciences of State Oceanic Administration, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
Institute of Mathematical Geology and Remote Sensing Geology, China University of Geosciences, Wuhan 430074, China
3.
Guangzhou Marine Geological Investigation Bureau, Ministry of Land and Natural Resources, Guangzhou 510760, China
4.
National Marine Information Center, State Oceanic Administration, Tianjin 300171, China

Received Date: 2007-08-01
Rev Recd Date: 2008-09-22

Abstract

Abstract

Seamount shape statistic parameters (summit diameter, seamount height, basal diameter, flatness, seamount slope, and the ratio of seamount height to basal diameter) have been complied from 60 profiles of well-surveyed Pacific seamounts in the heig htrange of 1 350~4 650 m.Multivariate statistic analysis on six parameters shows that seamount shape type can be classified by the ratio of seamount height to basal diameter.The ratio is less than 0.10 for the guyots (Type Ⅰ), or more than 0.10 for the pointed cone seamounts (TypeⅡ).And for the ratio being equal to 0.10 the flatness and the slope are referred, the flatter and gentler seamount is at tributed to Type Ⅰ, ot herwise TypeⅡ.The Magellan Seamounts and the Marshall Islands in the west Pacific Ocean are distributed basically by the guyot, but the Wake-Marcus Seamounts, the Mid-Pacific Ocean Mountains and the Lines Islands between the west and central Pacific grow generally with two type seamounts.Compared with the cobalt-rich crust on the pointed cone seamount and the guyot, it is discovered that the pebble crusts are richer in the guyot than the pointed cone seamount but the laminated crusts develop well in both type seamounts.In the central Pacific Ocean, the cobalt-rich crusts are richer in the pointed cone seamounts than the guyot.But the summit area is smaller in the pointed cone seamount than the guyot, the cobalt-rich crust resources are not potential in TypeⅡ seamount of the central Pacific Ocean.In the central and west Pacific Ocean, the laminated crusts grow richer on the guyot in the Mag ellan Seamounts and the Wake-Marcus Islands than the Mid-Pacific Mountains, the Marshall Islands and the Lines Islands, the former average thickness is more than 3 cm but the latter is less than 3 cm.As a whole, there is obvious difference in two type seamounts, the cobalt-rich crusts on the guyot in the west Pacific Ocean develop better than the central Pacific Ocean, and the cobalt-rich crust resource in the west ward slope of guyot is richer than the east ward one, to the contrary in the pointed cone seamounts.
- Pacific Ocean,
- seaflo or volcano shape,
- classification,
- cobalt-rich crust,
- cluster analysis

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References(19)

References

沈裕军,钟祥,贺泽全.大洋钴结壳资源研究开发现状[J].矿冶工程,1999,19(2):11-13.

施阔里尼科,谢洛施别尔格,米克海里科,等.麦哲伦海山区平顶山钴结壳的产出条件、分布规律和形成特点[J].陈邦彦译自ТихоокеанскаяГеология,2001,20 (2):76-86.

许东禹.俄罗斯大洋固体矿产资源调查研究进展[J].海洋地质动态,2002,18(10):21-28.

初凤友,孙国胜,李晓敏,等.中太平洋海山富钴结壳生长习性及控制因素[J].吉林大学学报(地球科学版),2005,35(3):320-325.

WOOD C A.Calderas:a planetary perspective[J].J Geophys Res,1984,89:8391-8406.

LACEY A,OCKENDON J R,TURCOTTE D L.On the geometrical form of volcanoes[J].Earth Planet Sci Lett,1981,54:139-143.

ANGEVINE C L,URCOTTE D L,OCKENDON J R.Geometrical form of aseismic ridges,volcanoes and seamounts[J].J Geophys Res,1984,89:11287-11292.

HOWELL D G.Tectonostratigraphic Terranes of the Circum-Pacific Region[M].Houston:Circum-Pacific Council for Energy and Mineral Resources,1985:3-30.

SMITH D K.Shape analysis of Pacific seamounts[J].Earth and Planetary Letters,1988,90:457-466.

SMITH D K.Comparison of the shapes and sizes of seafloor volcanoes on Earth and "pancake" domes on Venus[J].J Volcanology and Geothermal Reaesrch,1996,73:47-64.

FLOOD G Peter.Development of northwest Pacific guyots:general results from Ocean Drilling Program Legs 143 and 144[J].The Island Arc,1999,8:92-98.

MITCHELL C Niel.Transition from circular to stellate forms of submarine volcanoes[J].J Geophys Res,2001,106(B2):1987-2003.

SHEPARD F P.海底地质学[M].梁元博,于联生译.北京:科学出版社,1979:314.

PRINGLE M S,DUNCAN R A.Radiometric ages of basaltic lavas recovered at Sites 865,866 and 869[G]//WINTERER E L,SAGER W,FIRTH J V,eds.Proceedings of the Ocean Drilling Program,Scientific Results 143.Texas:College Station,1995:277-283.

KOPPERS A A P,STAUDIGEL H,PRINGLE M S,et al.Short-lived and discontinuous intraplate volcanism in the South Pacific:hot spots or extensional volcanism?[J].Geochemistry Geophysics Geosystems,2003,10(4):1-49.

KOPPERS A A P,STAUDIGEL H,WIJBRANS J R,et al.The Magellan seamount trail:implications for Cretaceous hotspot volcanism and absolute Pacific plate motion[J].Earth and Planetary Science Letters,1998,163:53-68.

PACER Team.Database development and maintenance[DB/OL].Seamount Catalog.(2004-06-01)[2006-09-16].http://erda.sdsc.edu/website/cgi-bin/,2006.

章伟艳,张富元,杨克红,等.太平洋海山地形与钴结壳资源分布的分形研究[J].沉积学报,2006,24(5):705-713.

潘家华,刘淑琴.西太平洋富钴结壳的分布、组分及元素地球化学[J].地球学报——中国地质科学院院报,1999,20(1):47-54.

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