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The environmental context of carbonaceous compressions and implications for organism preservation 1.40 Ga and 0.63 Ga
Zhang, Fenglian1; Wang, Huajian1; Ye, Yuntao1,2; Deng, Yan1,2; Lyu, Yitong1; Wang, Xiaomei1; Yu, Zhichao1; Lyu, Dan1; Lu, Yuanzheng1; Zhou, Chuanming (周传明)3
2021-07-01
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号573页码:18
摘要

Fossil life in the Precambrian is commonly preserved as carbonaceous compressions, where Pre-Cryogenian carbonaceous compressions mainly occur in organic-poor rocks. Black-shale-preserved carbonaceous compressions have become more common since the Ediacaran Period. To explore the depositional context of carbonaceous compressions, micro X-ray fluorescence spectroscopy (mu-XRF) was used to image elemental distributions in carbonaceous compressions and surrounding rocks in Mesopmterozoic and Ediacaran-aged rocks. The carbonaceous compressions preserved in the Xiamaling green silty mudstones (1.40 Ga) and Lantian black shales (0.63 Ga) were selected and scanned, respectively. The behavior of redox-sensitive elements (Mo, U, V, Zn, Cu) in the Xiamaling and Lantian rocks and carbonaceous compressions suggest that the overlying water conditions during their sedimentation were not sulfidic. However, the co-enrichments of Fe and S in Xiamaling and Lantian carbonaceous compressions indicate pyrite permineralization. The Lantian carbonaceous compressions have a higher pyrite permineralization degree and a lower organism decomposition degree than those of the Xiamaling carbonaceous compressions. We speculate that these differences are related to a higher sulfate reduction rate and a lower dissimilatory iron reduction rate in the sediments hosting the Lantian carbonaceous compressions. Such conditions might be achieved through rapid burial and encircling by clay minerals. Overall, our results shed new light on understanding the preservation processes of the Precambrian life and the influence of environmental factors.

关键词Xiamaling Formation Lantian Formation mu-XRF Multi-element imaging Fossil preservation
DOI10.1016/j.palaeo.2021.110449
收录类别SCI
语种英语
关键词[WOS]NEOPROTEROZOIC DOUSHANTUO FORMATION ; EDIACARAN LANTIAN FORMATION ; BURGESS-SHALE ; BLACK SHALES ; EXCEPTIONAL PRESERVATION ; MULTICELLULAR EUKARYOTES ; TUANSHANZI FORMATION ; MATTER PRESERVATION ; INTEGRATED CARBON ; YANSHAN RANGE
资助项目National Key Research and Development Program of China[2017YFC0603101] ; National Natural Science Foundation of China[41872125] ; National Natural Science Foundation of China[41530317] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010101] ; National Science and Technology Major Project of the Ministry of Science and Technology of China[2016ZX05004001] ; Villum Foundation of Denmark[16518]
WOS研究方向Physical Geography ; Geology ; Paleontology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:000656517500013
项目资助者National Key Research and Development Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; Villum Foundation of Denmark
出版者ELSEVIER
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/38274
专题中国科学院南京地质古生物研究所
通讯作者Wang, Huajian
作者单位1.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
4.Univ Southern Denmark, Inst Biol & Nordcee, DK-5230 Odense M, Denmark
推荐引用方式
GB/T 7714
Zhang, Fenglian,Wang, Huajian,Ye, Yuntao,et al. The environmental context of carbonaceous compressions and implications for organism preservation 1.40 Ga and 0.63 Ga[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,573:18.
APA Zhang, Fenglian.,Wang, Huajian.,Ye, Yuntao.,Deng, Yan.,Lyu, Yitong.,...&Canfield, Donald E..(2021).The environmental context of carbonaceous compressions and implications for organism preservation 1.40 Ga and 0.63 Ga.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,573,18.
MLA Zhang, Fenglian,et al."The environmental context of carbonaceous compressions and implications for organism preservation 1.40 Ga and 0.63 Ga".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 573(2021):18.
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