Indications for a meteoritic impact of early Cambrian age at Conception Bay, Newfoundland

Indications for a meteoritic impact of e

Indications for a meteoritic impact of early Cambrian age at Conception Bay, Newfoundland: Discussion

✍ M. M. Anderson; C. J. Hughes 📂 Article 📅 1976 🏛 Springer 🌐 English ⚖ 439 KB

Enigmatic sedimentary–volcanic successio

Enigmatic sedimentary–volcanic successions in the central European Variscides: a Cambrian/Early Ordovician age for the Wojcieszów Limestone (Kaczawa Mountains, SW Poland) indicated by SHRIMP dating of volcanic zircons

✍ Ryszard Kryza; Jan Zalasiewicz; Nikolay Rodionov 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 564 KB

## Abstract Metamorphosed volcanic and sedimentary successions in the central European Variscides are, in many areas, poorly biostratigraphically constrained, making palaeotectonic interpretations uncertain. In such instances, geochronological data are crucial. Sensitive high resolution ion micropr