A synthesis of the Cretaceous wildfire record related to atmospheric oxygen levels?  

作　　者：Da-Wei Lü Wen-Xu Du Zhi-Hui Zhang Yuan Gao Tian-Tian Wang Jin-Cheng Xu Ao-Cong Zhang Cheng-Shan Wang 

机构地区：[1]Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals,College of Earth Sciences and Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong Province,China [2]School of Earth Sciences and Resources,China University of Geosciences,Bejing 100083,China [3]Institute of Earth Sciences,China University of Geosciences(Bejing),Beijing 100083,China

出　　处：《Journal of Palaeogeography》2024年第1期149-164,共16页古地理学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Grant Nos.42102127, 42172117);the Natural Science Foundation of Shandong Province (Grant No. ZR2021QD087);the Chinese Postdoctoral Science Foundation (Grant No.2021M702019);the SDUST Research Fund,Shandong University of Science and Technology (Grant No.2018TDJH101)。

摘　　要：The Cretaceous was a significant greenhouse period in Earth's history with higher atmospheric CO_(2) levels and temperatures than today. Although evidence of combustion has been widely described from the Cretaceous deposits, our understanding of the spatiotemporal diversification pattern and process of the Cretaceous wildfires is still limited. In this study, we comprehensively synthesize a total of 271 published Cretaceous wildfire occurrences based on the by-products of burning, including fossil charcoal, pyrogenic inertinite(fossil charcoal in coal), and pyrogenic polycyclic aromatic hydrocarbons(PAHs). Spatially, the dataset shows a distinctive distribution of reported wildfire evidence characterized by high concentration in the middle latitudinal areas of the Northern Hemisphere(30°N-60°N) over the Cretaceous. Temporally, an overall increasing trend of the reported wildfire data from the Early Cretaceous to the Late Cretaceous is coincident with higher atmospheric O_(2) levels. However, the spatial and temporal patterns may result from many types of factors, such as taphonomy, preservation, and researcher biases, instead of a real picture of the Cretaceous wildfire evolution. To better understand the spatiotemporal diversification of the Cretaceous wildfire, more investigations on the record of wildfire occurrences during this period would be necessary in the future.

关 键 词：WILDFIRE CRETACEOUS Atmospheric oxygen TAPHONOMY Charcoal 

分 类 号：P534.53[天文地球—古生物学与地层学] P532[天文地球—地质学]