贵州瓮安陡山沱组剖面碳同位素生物地球化学研究
CARBON ISOTOPIC BIO-GEOCHEMICAL STUDY ON THE SECTION OF DOUSHANTUO FORMATION IN WENG'AN,GUIZHOU PROVINCE
查看参考文献37篇
|
文摘
|
在对扬子地台贵州瓮安陡山沱组剖面干酪根碳同位素组成进行分析后发现其变化显示了一定的规律性.碳同位素规律变化反映了最初的沉积信息,特别是有机质埋藏量的变化.获得的陡山沱期沉积岩中碳同位素组成研究结果初步反映了震旦-寒武交变期沉积环境的面貌;碳同位素组成变化规律可以用于反映扬子地台沉积层序和世界同期地层全球碳循环的对比和参考.为扬子区陡山沱期环境变化和生物演化提供了证据.δ13Cker值在-32.3‰和-24.5‰(PDB)间漂移与δ13Ccarb值在-4.9‰和3.6‰(PDB)间的变化,反映了当时海水的碳同位素组成.无机和有机碳同位素组成之差的△δorg-carb值沿剖面不断变化,是由于沉积有机质中有促进发酵功能的细菌数量比例变化所致. |
|
其他语种文摘
|
Secular variations of carbon isotopic composition of organic and carbonate carbon in Doushantuo Formation, which is exposed on the Yangtze Platform at Weng'an ,Guizhou Province, south China,were recognized. §13C values for organic matter varied from -33. 4%o to -26. 5%o-The carbon isotopic composition for carbonate carbon displayed variations between -4. 9%<> and 3, 6%o. A change in the isotopic difference (^8Org-carb) between both isotope records reflected a difference in the proportional contribution of bacterial biomass to the total sedimentary organic matter. In general,the observed changes were considered to be the primary depositional values, notably variations in the burial of organic matter. The study provided new carbonate carbon and organic carbon isotope data and curves during the Doushantuo interval of terminal Neoproterozoic and early Paleozoic age,and reflected variations of sedimentary environment and also offered im-portant correlation and reference for sedimentary sequence and global stratum of the same period. Furthermore, it presented crucial information for completely understanding for territorial and global events. |
|
来源
|
矿物岩石
,2005,25(2):75-80 【核心库】
|
|
关键词
|
瓮安
;
震旦-寒武交变期
;
陡山沱组
;
瓮安生物群
;
成磷事件
;
碳酸盐岩和干酪根碳同位素组成
|
|
地址
|
1.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550002
2.
Geologisch-Palaontologisches Institut,Universitat Münster, Germany
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-6872 |
|
学科
|
地质学 |
|
基金
|
国家自然科学基金
|
|
文献收藏号
|
CSCD:1992972
|
参考文献 共
37
共2页
|
|
1.
Zhang Y. New data on multicelular thallophytes and fragments of cellular tissues from late Proterozoic phosphate rocks.
Lethaia,1992,25:1-18
|
被引
31
次
|
|
|
|
|
2.
Xiao S. Three-dimensional preservation of algae and animal embryos in a Newprotoerozoic phosphorite[J].
Nature,1998,391:553-558
|
被引
66
次
|
|
|
|
|
3.
LiC. Precambriansponges with cellular structures[J].
Science,1998,279:879-882
|
被引
1
次
|
|
|
|
|
4.
杨杰东. 中国南方震旦系陡山沱组 Sm-Nd 同位素年龄测定.
科学通报,1994,39(1):65-68
|
被引
16
次
|
|
|
|
|
5.
王宗哲. 扬子地台震旦纪海水碳同位素的变化.
高校地质学报,1996,2(1):112-119
|
被引
21
次
|
|
|
|
|
6.
杨卫东. 滇黔磷块岩沉积学、地球化学与可持续开发战略[M].
滇黔磷块岩沉积学、地球化学与可持续开发战略,1997:1-106
|
被引
7
次
|
|
|
|
|
7.
周传明. 贵州瓮安地区上震旦统碳同位素特征.
地层学杂志,1997,21(2):124-129
|
被引
13
次
|
|
|
|
|
8.
郭庆军. 贵州瓮安生物群出现和磷矿形成的沉积地球化学研究[J].
矿物岩石地球化学通报,2003,22(3)
|
被引
1
次
|
|
|
|
|
9.
Li R. Spatial and temporal variations in carbon and sulfur isotopic compositions of Sinian sedimentary rocks in the Yangtze platform.
Precambrian Res,1999,97:59-75
|
被引
17
次
|
|
|
|
|
10.
Shields G. new francolite-bound sulphate δ34S data and acritical appraisal of the existing record[J].
Chemical Geology,2004,204:163-182
|
被引
4
次
|
|
|
|
|
11.
Feng H. δ13Ccarb and Ceanom excursions in the post-glacial Neoproterozoic and Early Cambrian interval in Guizhou.
Progress in Natural Science,2004(special issue):154-158
|
被引
1
次
|
|
|
|
|
12.
Zhang T. Variations of sulfur and carbon isotopes in seawater during the Doushantuo stage in late Neoproterozoic[J].
Chin Sci Bull(in Eng),2003,48(13):1375-1380
|
被引
4
次
|
|
|
|
|
13.
陈多福. 贵州瓮福新元古代陡山沱期磷矿床铅同位素特征及来源探讨.
地球化学,2002,31(1):49-54
|
被引
11
次
|
|
|
|
|
14.
Chen D. Possible REE constraints on the depositional and diagenetic environment of Doushantuo Formation phosphorites containing the earliest metazoan fauna[J].
Chem Geol,2003,201:103-118
|
被引
1
次
|
|
|
|
|
15.
Magaritz M. A clue to faunal extinction[J].
Geology,1989,17:337-340
|
被引
10
次
|
|
|
|
|
16.
KumpL R. carbonates and organic matter[J].
ChemGeol,1999,161:181-198
|
被引
1
次
|
|
|
|
|
17.
Hayes J M. The abundance of 13C in Marine Organic matter and isotopic fractionation in the Global biogeochemical cycle of carbon during the past 800 Ma[J].
Chem Geol,1999,161:103-125
|
被引
43
次
|
|
|
|
|
18.
Veizer J. 87Sr/86Sr.
Chem Geol,1999,161:59-88
|
被引
427
次
|
|
|
|
|
19.
Des Marais D J. Carbon isotope evidence for the stepwise oxidation of the Proterozoic environment[J ].
Nature,1992,359:605-609
|
被引
22
次
|
|
|
|
|
20.
Des Marais D J. Isotope evolution of the biogeochemical carbon cycle during the Proterozoic Eon[J].
Organic Geochemistry,1997,27(5/6):185-193
|
被引
4
次
|
|
|
|
|
了解气象卫星更多信息，请访问