20.500.12556/DiRROS-24904 Transmission electron microscopy analysis of shock veins in the meteorite Jesenice Presevna elektronska mikroskopija udarnih žil v meteoritu Jesenice Meteorite Jesenice is a weakly (S3) shocked ordinary chondrite from Slovenia. The shock event was violent enough to cause localized partial melting of the meteorite and the formation of shock veins. Inside the shock veins, metal-sulfide globules were found, which provided evidence for a post-shock cooling rate of 2.2·105 Ks–1 – 7.4·103 Ks–1. From the mineral paragenesis of the shock veins, shock pressure and peak shock temperature were deduced as 2.5–15 GPa and 1500–2150 °C, respectively. We provide evidence that shock veins were formed via a shear and friction mechanism. Furthermore, the confirmed presence of ordered FeNi metal (tetrataenite) found in the matrix indicates that the shock occurred in the parent body of the meteorite Jesenice. Meteorit Jesenice je šibko udarno metamorfoziran (S3) navadni hondrit iz Slovenije. Udarni dogodek je bil dovolj silovit, da je povzročil delno taljenje meteorita in s tem nastanek udarnih žil. V udarnih žilah so bile najdene kovinsko-sulfidne globule, s katerimi smo določili hitrost ohlajanja na 2.2·105 K s–1 – 7.4·103 K s–1. Iz mineralne združbe udarnih žil smo določili najvišji udarni tlak in najvišjo temperature na 2.5–15 GPa oz. 1500–2150 °C. Sklepamo, da je do nastanka žil prišlo z mehanizmom strižnega trenja. V meteoritu smo potrdili tudi obstoj minerala tetrataenita, kar nakazuje, da je do dogodka udarne metamorfoze prišlo znotraj starševskega telesa meteorita Jesenice. chondrite shock stage shock veins metal-sulfide globules tetrataenite transmission electron microscopy hondrit udarna metamorfoza udarne žile kovinsko-sulfidne globule tetrataenit presevna elektronska mikroskopija true false true Geološki zavod Slovenije Angleški jezik Slovenski jezik Neznano 2025-12-24 08:20:33 2025-12-24 08:22:18 2025-12-25 03:44:40 0000-00-00 00:00:00 2025 0 0 str. 243-250 no. 2 vol. 68 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-12-10 55 0016-7789 10.5474/geologija.2025.010 259317763 1938-Article_Text-12342684-1-10-20251210.pdf 1938-Article_Text-12342684-1-10-20251210.pdf 1 45C0CFE042C090ECC4F5811604A8D23B 7bc2d669d66a4a18d94c428bf3493c57bf5459acfc2928feb6a9b1d0cf52877c 7b719a43-e099-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=37277 Geološki zavod Slovenije Geologija 0 0 0