Age and metamorphism of some massive sulflde deposits in Virginia,North Carolina and Tennessee |
| |
| Affiliation: | 1. Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, TamilNadu 602105, India;2. Department of Automobile Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, TamilNadu 602105, India;1. School of Computer Science and Engineering, Kyungpook National University, Daegu, Republic of Korea;2. Department of Computer Science, S.S.D. Women’s Institute of Technology, Bathinda (Punjab), India;1. Department of Bioscience, Aarhus University, Vejlsøvej 25, DK-8600 Silkeborg, Denmark;2. Department of Biology & CESAM, University of Aveiro, 3810–193 Aveiro, Portugal |
| |
| Abstract: | Isotopic ages of vein and wall-rock samples have been determined on five massive sulflde deposits of the southern Appalachians. Vein mineral ages of about 1100 m.y. indicate that some ore bodies formed at least as early as the Grenville metamorphism, and probably soon after the formation of the enclosing gneiss and schist. Present textures of the ore were formed during subsequent metamorphic periods at about 450 m.y. and 300 to 330 m.y. ago. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
