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CHEMICAL-SPECIES OF IRIDIUM AND OTHER TRACE-ELEMENTS IN THE CRETACEOUS-TERTIARY BOUNDARY CLAYS AND THEIR IMPLICATION
Kong P(孔屏); Chai ZF(柴之芳); Mao XY(毛雪瑛); Ma SL(马淑兰); KONG, P; CHAI, CF; MAO, XY; MA, SL
刊名JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES
1991
卷号151期号:1页码:#REF!
学科分类Chemistry; Nuclear Science & Technology
通讯作者KONG, P (reprint author), ACAD SINICA,INST HIGH ENERGY PHYS,POB 2732,BEIJING 100080,PEOPLES R CHINA.
文章类型Article
英文摘要The geological samples: Cretaceous-Tertiary (K-T) boundary clays, meteorites, volcanic lava, and ultrabasic rock were separated into carbonate, metal, sulfide, oxide, silicate and acid-resistant residue by a selective chemical dissolution procedure developed in our laboratory. Some conclusions were drawn by analyzing the chemical speciation of anomalous iridum in the above samples and especially by studying the characteristics of mineral components in those residue phases. (1) It is impossible that the anomalous Ir was caused by geochemical enrichment; (2) The iridium enrichment in the K-T boundaries did not necessarily associate with kerogen; (3) The volcanic activity has participated in the extinction event at the end of Cretaceous; (4) Extraterrestrial impact was the trigger of K-T event. Then, we proposed a mixed model by which the extant anomalous Ir in K-T boundary clays was interpreted as a combined effect of extraterrestrial impact, volcano eruption and post-depositional redistribution.
类目[WOS]Chemistry, Analytical ; Chemistry, Inorganic & Nuclear ; Nuclear Science & Technology
收录类别SCI
WOS记录号WOS:A1991GK01200022
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226899
专题院士_期刊论文
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Kong P,Chai ZF,Mao XY,et al. CHEMICAL-SPECIES OF IRIDIUM AND OTHER TRACE-ELEMENTS IN THE CRETACEOUS-TERTIARY BOUNDARY CLAYS AND THEIR IMPLICATION[J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES,1991,151(1):#REF!.
APA 孔屏.,柴之芳.,毛雪瑛.,马淑兰.,KONG, P.,...&MA, SL.(1991).CHEMICAL-SPECIES OF IRIDIUM AND OTHER TRACE-ELEMENTS IN THE CRETACEOUS-TERTIARY BOUNDARY CLAYS AND THEIR IMPLICATION.JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES,151(1),#REF!.
MLA 孔屏,et al."CHEMICAL-SPECIES OF IRIDIUM AND OTHER TRACE-ELEMENTS IN THE CRETACEOUS-TERTIARY BOUNDARY CLAYS AND THEIR IMPLICATION".JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES 151.1(1991):#REF!.
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