上海国土资源
上海國土資源
상해국토자원
2014年
2期
43~48
,共null页
IODP349航次 南海中央海盆 大洋钻探 地球物理测井 大洋玄武岩
IODP349航次 南海中央海盆 大洋鑽探 地毬物理測井 大洋玄武巖
IODP349항차 남해중앙해분 대양찬탐 지구물리측정 대양현무암
IODP Expedition 349; central basin of the South China Sea; ocean drilling; geophysical logging; oceanic basalt
作为新十年国际大洋发现计划的首航,IODP349航次以研究南海构造演化和深海盆洋壳为重点,在南海中央海盆深水区完成了5个站位的取芯工作,钻探总深度4317m,其中沉积岩取芯1503m,基底玄武岩取芯近100m,获得的最大井深1008m.首次获得具有极高科学价值的大洋玄武岩、火山碎屑岩、深海钙质碳酸盐岩、浊流沉积岩、基底之上的半远洋沉积红层、富含有机质的浅海砂岩等岩芯,同时还完成了2个最深站位的地球物理测井工作,在地球动力学、大洋岩石圈演化、深海沉积学、深海极端微生物学等方面取得突破性科学进展.
作為新十年國際大洋髮現計劃的首航,IODP349航次以研究南海構造縯化和深海盆洋殼為重點,在南海中央海盆深水區完成瞭5箇站位的取芯工作,鑽探總深度4317m,其中沉積巖取芯1503m,基底玄武巖取芯近100m,穫得的最大井深1008m.首次穫得具有極高科學價值的大洋玄武巖、火山碎屑巖、深海鈣質碳痠鹽巖、濁流沉積巖、基底之上的半遠洋沉積紅層、富含有機質的淺海砂巖等巖芯,同時還完成瞭2箇最深站位的地毬物理測井工作,在地毬動力學、大洋巖石圈縯化、深海沉積學、深海極耑微生物學等方麵取得突破性科學進展.
작위신십년국제대양발현계화적수항,IODP349항차이연구남해구조연화화심해분양각위중점,재남해중앙해분심수구완성료5개참위적취심공작,찬탐총심도4317m,기중침적암취심1503m,기저현무암취심근100m,획득적최대정심1008m.수차획득구유겁고과학개치적대양현무암、화산쇄설암、심해개질탄산염암、탁류침적암、기저지상적반원양침적홍층、부함유궤질적천해사암등암심,동시환완성료2개최심참위적지구물리측정공작,재지구동역학、대양암석권연화、심해침적학、심해겁단미생물학등방면취득돌파성과학진전.
As the first expedition of the new International Ocean Discovery Program （IODP）, Expedition 349 aims tounderstand the tectonics and evolution of the oceanic crust of the South China Sea. The expedition drilled and took coresat five sites in the central basin of the South China Sea. In total, drilling penetrated 4317 m, and 1503 m of sediment coresand nearly 100 m of oceanic basalt were recovered. The deepest hole drilled was 1008 m. A full suite of geophysical loggingwas also conducted at the two deepest sites. For the first time, oceanic basalts, volcaniclastic breccias, calcareous deposits,turbidites, red clay, and organic-rich shallow-marine sandstone were all recovered. These samples should yield importantinformation on the evolution of the deep ocean basin of the South China Sea. Data obtained through IODP Expedition 349should enable scientific breakthroughs in various fields, including geodynamics, the evolution of the oceanic lithosphere,deep-sea sedimentology, and extremophiles.
