Wildfires in the Campanian of James Ross Island: a new macro-charcoal record for the Antarctic Peninsula

• Published in: Polar Research
• Main Authors: Lima, Flaviana Jorge de, Sayão, Juliana Manso, Ponciano, Luiza C. M. de Oliveira, Weinschütz, Luiz C., Figueiredo, Rodrigo G., Rodrigues, Taissa Marques, Bantim, Renan Alfredo Machado, Saraiva, Antonio Álamo Feitosa, Jasper, André, Uhl, Dieter, Kellner, Alexander W.A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Norwegian Polar Institute 2021
• Subjects: Charcoal; Palaeo-wildfires; Cretaceous; Southern Hemisphere; Gondwana; Cretaceous high-fire; Antarctic; Antarctic Peninsula; Ross Island; The Antarctic; Antarc*; James Ross Island; Polar Research
• Online Access: https://polarresearch.net/index.php/polar/article/view/5487; https://doi.org/10.33265/polar.v40.5487

The Cretaceous “high-fire” period was a global event that reached almost all continental masses during that period in Earth’s history. The extensive wildfires directly affected plant communities. Significant palaeobotanical records in the Antarctic Peninsula have been studied from the James Ross Sub-Basin, especially from the Santa Marta Formation. However, there is no described evidence for palaeo-wildfires in the area so far. Here, we present the first occurrence of fossilized macro-charcoal coming from James Ross Island, confirming that palaeo-wildfires occurred in the Campanian vegetation preserved in the Santa Marta Formation. The new charcoal material has a gymnospermous taxonomic affinity, more specifically with the Araucariaceae, which is in accordance with previous palaeobotanical records from James Ross Island. This occurrence adds new information to the construction of the palaeo-wildfire scenario for Gondwana.