干旱区生态环境知识资源中心(Arid): Intensive peatland wildfires during the Aptian-Albian oceanic anoxic event 1b: Evidence from borehole SK-2 in the Songliao Basin, NE China

Arid

DOI	10.1016/j.jop.2022.06.002
	Intensive peatland wildfires during the Aptian-Albian oceanic anoxic event 1b: Evidence from borehole SK-2 in the Songliao Basin, NE China
	Zhang, Zhi-Hui; Lu, Da-Wei; Wang, Tian-Tian; An, Dong-Zhao; Liu, Hai-Yan; Wang, Dong-Dong; Wang, Cheng-Shan
通讯作者	Lü, DW
来源期刊	JOURNAL OF PALAEOGEOGRAPHY-ENGLISH
ISSN	2095-3836
EISSN	2524-4507
出版年	2022
卷号	11 期号:3 页码:448-467
英文摘要	The Cretaceous has been considered a high-fire world accompanied by widespread by-products of combustion in the rock record. The mid-Cretaceous oceanic anoxic event 1b (OAE1b) is marked by one of the major perturbations in the global carbon cycle characterized by deposition of organic-rich sediments in both marine and terrestrial settings. However, our understanding is still limited on changes in wildfire activity during OAE1b period. Here, we carried out a comprehensive analysis, including organic carbon isotope (813Corg), total organic carbon (TOC), coal petrology, trace elements, and pyrolytic polycyclic aromatic hydrocarbons (pyroPAHs), of coal seams of the middle Aptian to early Albian Shahezi Formation from borehole SK-2 in Songliao Basin, Northeast China. Two negative 813Corg excursions in the Shahezi Formation can be corresponded with the 113/Jacob and Kilian sub-events of OAE1b. Moreover, the intensive peatland wildfires have been identified during the sub-event periods of OAE1b based on the co-occurrence of high abundance of charcoal and pyroPAHs at that time. In addition, Sr/Ba, Sr/Cu and Sr/Rb ratios demonstrate that enhanced peatland wildfires were controlled by dryer climate conditions owing to episodic northward migration of arid zones in East Asia related with rising global temperature during the sub-events of OAE1b. The climate-driven extensive wildfire activity in the mid-latitude terrestrial ecosystems can be a contributing factor for OAE1b through the increased flux of nutrients fuelling primary producers in the lake and marine environments and leading to more speculative anoxia to allow the deposition of organic-rich sediments. Our results provide essential understanding of the importance of wildfires in driving mechanism of oceanic anoxic events (OAEs) in Earth's history.
英文关键词	Lower Cretaceous OAEs Peatland Wildfire Coals
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000918316900003
WOS关键词	POLYCYCLIC AROMATIC-HYDROCARBONS ; U-PB GEOCHRONOLOGY ; PALEOMAGNETIC DATA ; SHAHEZI FORMATION ; VOCONTIAN BASIN ; FIRE ; OXYGEN ; RECORD ; DIVERSIFICATION ; ENVIRONMENT
WOS类目	Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Geology ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393562
推荐引用方式 GB/T 7714	Zhang, Zhi-Hui,Lu, Da-Wei,Wang, Tian-Tian,et al. Intensive peatland wildfires during the Aptian-Albian oceanic anoxic event 1b: Evidence from borehole SK-2 in the Songliao Basin, NE China[J],2022,11(3):448-467.
APA	Zhang, Zhi-Hui.,Lu, Da-Wei.,Wang, Tian-Tian.,An, Dong-Zhao.,Liu, Hai-Yan.,...&Wang, Cheng-Shan.(2022).Intensive peatland wildfires during the Aptian-Albian oceanic anoxic event 1b: Evidence from borehole SK-2 in the Songliao Basin, NE China.JOURNAL OF PALAEOGEOGRAPHY-ENGLISH,11(3),448-467.
MLA	Zhang, Zhi-Hui,et al."Intensive peatland wildfires during the Aptian-Albian oceanic anoxic event 1b: Evidence from borehole SK-2 in the Songliao Basin, NE China".JOURNAL OF PALAEOGEOGRAPHY-ENGLISH 11.3(2022):448-467.