[3] The Ellsworth Land Volcanic Group belongs to the Patagonia-Antarctic Peninsula sequence, along the Mapple & Brennecke Formations and the N and Ellsworth-Whitmore terrane isolated granitoids.

[4] This units form part of the wider first-stage event (V1) of the Chon Aike Province, proving connection with both areas in the Early Jurassic, with the closest unit in South America being the Tobífera and Lemaire Formations (Fuegian Andes), the Quemado Complex (Austral Patagonia), the Bahía Laura Volcanic Complex (Deseado Massif) and the Marifil,Cañadón Asfalto, Lonco Trapial & Garamilla Formation in Central-Northern Patagonia.

[9] The Antarctic Peninsula has been traditionally interpreted as a native continental arc, yet more recent studies suggest it is a collection of terranes merged onto the Gondwana margin.

[3] The Mesozoic volcanic-sedimentary layers in the Ellsworth land sit atop older metamorphosed sedimentary rocks, like Ordovician to Permian basement on the Trinity Peninsula Group.

[11] Plutonic rocks, forming widespread outcrops, dominate the Antarctic Peninsula's igneous landscape, with their full extent and connectivity still not fully understood due to limited exposure and data availability.

[13] Ellsworth Land intertongues with the Sweeney Fm and is overlied by the Latady Group, marked by intense folding, thrust faulting, and pluton intrusion during the Late Jurassic to Early Cretaceous period.

[3] The Ellsworth Land VG shows considerable alteration and metamorphism, leading to challenges with volcanic sections correlation due to variations in rock types and minor faulting, with an estimated thickness of roughly 1000 meters in the Sweeney Mountains, where is present in most peaks, where is characterized by silicic ignimbrite, featuring diverse weathering patterns and lithology dominated by feldspar-rich ignimbrite.

Sedimentary layers mainly consist of well-sorted sandstone and siltstone with ripple patterns, suggesting deposition in freshwater, likely in a lacustrine body with associated subaerial fluvial units.

The leaf-based macroflora is conifer-dominated and corresponds to genera recovered in the Argentinian Cañadón Asfalto Formation, where cuticular analisis of the same taxa suggests common environmental stress.