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DOI | 10.1029/2019GL083321 |
Preservation of Cyanobacterial UVR-Shielding Pigment Scytonemin in Carbonate Ooids Formed in Pleistocene Salt Lakes in the Qaidam Basin, Tibetan Plateau | |
Sun, Yu1,2; Li, Yiliang3,4; Li, Long5; He, Hongping1,2 | |
2019-09-05 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Peoples R China; Canada |
英文摘要 | The formation of ooids and their use as a proxy to trace biogeochemical cycles have long been controversial. Here, we examined three beds of evaporite-cemented ooids in the Qaidam Basin, including a layer of dolomitic ooids formed at 293 +/- 4 kyr and cemented by gypsum at 266 +/- 3 kyr, a layer of aragonitic ooids formed at 163 +/- 1 kyr and cemented by halite at 111 +/- 0.8 kyr, and another layer of aragonitic ooids formed at 38 +/- 0.5 kyr and cemented by gypsum at 23 +/- 0.3 kyr. The Raman spectra of organic extracts from these ooids indicate ubiquitous preservation of scytonemin, a unique cyanobacterial ultraviolet radiation (UVR)-shielding pigment. This discovery suggests that ooids are capable of preserving biomarker from their depositional environment. Consequently, ooid may be used as a proxy for tracing biogeochemical processes and potentially applied to the search for life on Mars. |
英文关键词 | ooids scytonemin Qaidam Basin biosignature |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000485378000001 |
WOS关键词 | DALANGTAN PLAYA ; MARS ; CONSTRAINTS ; EVOLUTION ; HOLOCENE ; VALUES ; ANALOG ; CRUST |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/186941 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Ney Lab Mineral Phys & Mat, CAS Key Lab Mineral & Metallogeny, Guangzhou, Guangdong, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Univ Hong Kong, Dept Earth Sci, Pokfulam, Hong Kong, Peoples R China; 4.CAS Ctr Excellence Comparat Planetary, Hefei, Anhui, Peoples R China; 5.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB, Canada |
推荐引用方式 GB/T 7714 | Sun, Yu,Li, Yiliang,Li, Long,et al. Preservation of Cyanobacterial UVR-Shielding Pigment Scytonemin in Carbonate Ooids Formed in Pleistocene Salt Lakes in the Qaidam Basin, Tibetan Plateau[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Sun, Yu,Li, Yiliang,Li, Long,&He, Hongping.(2019).Preservation of Cyanobacterial UVR-Shielding Pigment Scytonemin in Carbonate Ooids Formed in Pleistocene Salt Lakes in the Qaidam Basin, Tibetan Plateau.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Sun, Yu,et al."Preservation of Cyanobacterial UVR-Shielding Pigment Scytonemin in Carbonate Ooids Formed in Pleistocene Salt Lakes in the Qaidam Basin, Tibetan Plateau".GEOPHYSICAL RESEARCH LETTERS (2019). |
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