The 1925 meteorite fall near Ellemeet and Serooskerke, the Netherlands

Abstract

Two meteorites impacted in 1925 around the town of Serooskerke on the isle of Schouwen, the Netherlands. The largest mass is widely known as the "Ellemeet" diogenite, while a second mass, heavily weathered due to environmental exposure, also survived until the present day. This work aims to reconstruct the history of the 1925 fall and for the first time documents the second mass, known as the "Serooskerke," by integrating a historical and experimental approach. The study of historical news archives and cadastral records redefined the 1925 impact site at N 51°42.086 0 E 3°49.789 0 . Environmental exposure experiments reproducing the effects of rainfall and frost weathering identified the latter as the main cause for the second mass' reported disintegration in the field sometime during the 1925-1926 winter. The bulk mineralogy of the second mass was established using XRD powder diffraction for a 2h range of 3-70°and was found to be identical to an Ellemeet reference sample. UV/VIS/nIR spectroscopy (300-2500 nm) was subsequently used to broadly compare the second mass to HED clan meteorites Bouvante, EET87503, Johnstown and asteroid 4 Vesta in order to corroborate its vestan origin. The historical and geographic relationship of the two masses and the comparable bulk mineralogy supported the pairing of these two meteorites. This makes the Serooskerke a valuable legacy of the 1925 fall, especially as the location of~50% of the remaining Ellemeet mass is presently unknown.

Pairwise Alignment of Archaeological Fragments Through Morphological Characterization of Fracture Surfaces

“…We have shown that the proposed morphological features can guide precise pairwise alignment (and may even be useful in global reconstruction). That capability is not only required in archaeology, but also has uses in other fields: such as bone fracture reduction in medical applications (Liao et al, 2020), skull reassembly in forensic investigation (Zhang et al, 2015) or even in reassembling broken meteorites (de Vet, 2015).…”