Preliminary Petrography of Impactites from El'Gygytgyn Srater, NE Siberia: Including Cores from ICDP-Lake Drilling Hole 1 Vrije Universiteit Brussel
The 3.6 Ma, 18 km diameter Elgygytgyn impact crater in NE Siberia formed in a target composed of 83.2 to 89.3 Myr old volcanic rocks. A generalized pre-impact upper target stratigraphy was established (top to bottom) 250 m rhyolitic ignimbrites, 200 m of rhyolitic tuffs and lavas, 70 m of andesitic tuffs and lavas, and 100 m of rhyolitic and dacitic ash tuffs and welded tuffs.