Determination of Fullerenes (C60/C70) from the Permian-Triassic Boundary in the Meishan Section of South China  

作　　者：LIYanfang LIANGHandong YINHongfu SUNJing CAIHou＇an RAOZhu RANFanlin 

机构地区：[1]ChinaUniversityofMiningandTechnology,Beijing100083 [2]ChinaUniversityofMiningandTechnology,Beijing100083／／KeyLaboratoryofCoalResources,MinistryofEducation,Beijing100083 [3]ChinaUniversityofGeosciences,Wuhan,Hubei430074

出　　处：《Acta Geologica Sinica(English Edition)》2005年第1期11-15,共5页地质学报（英文版）

基　　金：the National Natural Science Foundation of China(No.40072055,40232025); the Research Fund for the Doctoral Program of Higher Education(No.20040290005).

摘　　要：Fullerenes (C 60 /C 70 ), clays and rocks near the Permian-Triassic (P/T) boundary in the Meishan section of South China are explored by means of comprehensive analytical techniques, including ultrasonic extraction with column purification, high-performance liquid chromatography (HPLC) and matrix assisted laser desorption/ionization time-of- flight mass spectrometry (MALDI TOF MS). The study confirms the existence of fullerenes toward the P/T event boundary and their absence in clays and limestones beyond the boundary. In particular, the white clay, known as the event boundary, contains fullerenes of 0.33 ppb, while the red material, as the first lamina fill of goethite and gypsum on the base of the white clay, contains fullerenes of 1.23 ppb, and the last lamina of 2.50 ppb. Significantly, distinct enrichment of fullerenes is coincident with the disappearance of fossil records of marine species (94%) just at the base of the white clay, implying that geological fullerenes would be one of temporal remnants led by the P/T catastrophic event. This work strongly supports that fullerenes would be one of significant records of the P/T catastrophic event but their origin remains to be studied further.Fullerenes (C 60 /C 70 ), clays and rocks near the Permian-Triassic (P/T) boundary in the Meishan section of South China are explored by means of comprehensive analytical techniques, including ultrasonic extraction with column purification, high-performance liquid chromatography (HPLC) and matrix assisted laser desorption/ionization time-of- flight mass spectrometry (MALDI TOF MS). The study confirms the existence of fullerenes toward the P/T event boundary and their absence in clays and limestones beyond the boundary. In particular, the white clay, known as the event boundary, contains fullerenes of 0.33 ppb, while the red material, as the first lamina fill of goethite and gypsum on the base of the white clay, contains fullerenes of 1.23 ppb, and the last lamina of 2.50 ppb. Significantly, distinct enrichment of fullerenes is coincident with the disappearance of fossil records of marine species (94%) just at the base of the white clay, implying that geological fullerenes would be one of temporal remnants led by the P/T catastrophic event. This work strongly supports that fullerenes would be one of significant records of the P/T catastrophic event but their origin remains to be studied further.

关 键 词：FULLERENES mass extinction PERMIAN-TRIASSIC laminas Meishan section China 

分 类 号：Q911.6[天文地球—古生物学与地层学] P534.51[生物学—古生物学]