Bibliothek verbrannter Bücher : eine Auswahl der von den Nationalsozialisten verfemten und verbotenen Literatur ; in 10 Bänden
- ;1060°;C and ~22 kbar. Ultrahigh-temperature conditions persisted even after a significant drop in pressure. We dated monazite, zircon, rutile, garnet and apatite from felsic granulite by U;Pb, biotite from retrogressed felsic granulite by Rb;Sr, and titanite from mafic granulite by U;Pb. Zircon and titanite give within analytical uncertainties the same age at 341·;5 ±; 0·;8 Ma (2{sigma}) and 342·;0 ±; 0·;8 Ma (2{sigma}), respectively, demonstrating (1) a similar closure temperature for both minerals in dry systems and (2) a closure temperature for titanite considerably higher than 550°;C. Monazite plots discordantly and yields a 207Pb/206Pb age at 338·;0 ±;0·;5 Ma (2{sigma}), which represents a minimum age because of the possibility of excess 206Pb. Rutile, garnet and apatite have little radiogenic lead and show a wide range of apparent 206Pb/238U ages, which reflects initial isotopic heterogeneities originating from the reaction history rather than later disturbances. Biotite yields an Rb;Sr age at 323·;0 ±; 2·;3 Ma (2{sigma}). The;1060°;C and ~22 kbar. Ultrahigh-temperature conditions persisted even after a significant drop in pressure. We dated monazite, zircon, rutile, garnet and apatite from felsic granulite by U;Pb, biotite from retrogressed felsic granulite by Rb;Sr, and titanite from mafic granulite by U;Pb. Zircon and titanite give within analytical uncertainties the same age at 341·;5 ±; 0·;8 Ma (2{sigma}) and 342·;0 ±; 0·;8 Ma (2{sigma}), respectively, demonstrating (1) a similar closure temperature for both minerals in dry systems and (2) a closure temperature for titanite considerably higher than 550°;C. Monazite plots discordantly and yields a 207Pb/206Pb age at 338·;0 ±;0·;5 Ma (2{sigma}), which represents a minimum age because of the possibility of excess 206Pb. Rutile, garnet and apatite have little radiogenic lead and show a wide range of apparent 206Pb/238U ages, which reflects initial isotopic heterogeneities originating from the reaction history rather than later disturbances. Biotite yields an Rb;Sr age at 323·;0 ±; 2·;3 Ma (2{sigma}). The age data in combination with the P;T path demonstrate that exhumation of the Saxon Granulite Massif to a middle- to upper-crustal level proceeded at a fast average rate (>9;18 mm/yr) and subsequently slowed down significantly (<2 mm/yr).…
| URL: | http://www.verbrannte-buecher.de |
|---|---|
| ISBN: | 978-3-487-13612-0 |
| Publisher: | Olms |
| Place of publishing: | Hildesheim |
| Editor(s): | Potsdam Moses-Mendelssohn-Zentrum für europäisch-jüdische Studien |
| Further contributing person(s): | Julius H. Schoeps, Simone Barck, Gerhard Bauer, Margrid Bircken, Uri Faber, Arcady Fried, Gert Mattenklott, Helmut Peitsch, Silvia Schlenstedt, Werner Treß, Clemens Zintzen |
| Publication type: | Monograph/Edited Volume |
| Language: | German |
| Year of first publication: | 2008 |
| Publication year: | 2008 |
| Release date: | 2017/03/25 |
| Organizational units: | Philosophische Fakultät / Institut für Germanistik |
