994 resultados para 1995_03310845 CTD-55 4502112
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A precise synchronization of different climate records is indispensable for a correct dynamical interpretation of paleoclimatic data. A chronology for the TALDICE ice core from the Ross Sea sector of East Antarctica has recently been presented based on methane synchronization with Greenland and the EDC ice cores and δ18Oice synchronization with EDC in the bottom part (TALDICE-1). Using new high-resolution methane data obtained with a continuous flow analysis technique, we present a refined age scale for the age interval from 55–112 thousand years (ka) before present, where TALDICE is synchronized with EDC. New and more precise tie points reduce the uncertainties of the age scale from up to 1900 yr in TALDICE-1 to below 1100 yr over most of the refined interval and shift the Talos Dome dating to significantly younger ages during the onset of Marine Isotope Stage 3. Thus, discussions of climate dynamics at sub-millennial time scales are now possible back to 110 ka, in particular during the inception of the last ice age. Calcium data of EDC and TALDICE are compared to show the impact of the refinement to the synchronization of the two ice cores not only for the gas but also for the ice age scale.
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Electron and ion microprobe data on two samples of welshite from the type locality of Langban, Sweden, gave analytical totals of 99.38-99.57 wt.% and BeO contents of 4.82-5.11 wt.%, corresponding to 1.692-1.773 Be/20 O. Mossbauer and optical spectra of one of these samples gave Fe-[iv](3+)/Sigma Fe = 0.91, Fe-[iv](2+)/Sigma Fe = 0.09, and no evidence of Mn3+. The resulting formula for this sample is Ca2Mg3.8Mn0.62+Fe0.12+Sb1.55+O2[Si2.8Be1.7Fe0.653+Al0.7As0.17O18], and that for the second sample, Ca2Mg3.8Mn0.12+Fe0.12+F0.83+Sb1.25+O2[Si2.8Be1.8F0.653+Al0.25As0.25O18], is related by the substitution involving tetrahedral and octahedral sites: 0.59([vi,iv])(Fe,Al)(3+) approximate to 0.42([vi])(Mg,Mn,Fe)(2+) + 0.21(Sb-[vi],As-[iv])(5+), i.e. 3([vi,iv]) M3+ = 2([vi])M(2+) + M-[vi,iv](5+). WelShite is distinctive among aenigmatite-group minerals in the high proportion of Fe 3+ in tetrahedral coordination and is unique in its Be content, substantially exceeding 1Be per formula unit. Given the cation distributions in other minerals related to aenigmatite, we think it is reasonable to assume that at least one tetrahedral site is >50% occupied by Be and that one octahedral site is >50% occupied by Sb, so that welshite should be retained as a distinct species with its own name in the aenigmatite group.
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von Tassilo Hoffmann
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Vorbesitzer: Abraham Merzbacher
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Welsch (Projektbearbeiter): Diskussion über die Aufhebung der Robot (Fronarbeit) am Beispiel Böhmens. Die grundsätzliche Notwendigkeit dieses Schrittes wird bejaht, eine entschädigungslose Ablösung jedoch abgelehnt
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Welsch (Projektbearbeiter): Verurteilung des ehemaligen Amtsschreibers und Bauaufsehers Heizerath (in Umwandlung der zuvor ausgesprochenen Todesstrafe) zu fünfjähriger Zwangsarbeit wegen Aufruhrs
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Nathan Porges
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Samuel Klein
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Vorbesitzer: Johann Maximilian zum Jungen
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Vorbesitzer: Bartholomaeusstift Frankfurt am Main
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Vorbesitzer: Dominikanerkloster Frankfurt am Main
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2 Briefe zwischen Marga Wadsack und Max Horkheimer, 24.08.1937, 29.08.1937; 1 Brief von Gloria H. Wagner an Max Horkheimer, 27.12.1948; 1 Brief von Herta Wagner an Leo Löwenthal, 05.06.1936; 3 Brief und 1 Beilage zwischen Herta Wagner, 12.03.1936, 1936; 8 Brief zwischen Katja Walch-Lux und Max Horkheimer, 1934-1938; 2 Brief zwischen K. Walcher und Max Horkheimer, 07.08.1936, 04.09.1936 sowie Bemerkungen zum Brief von Max Horkheimer; 2 Briefe zwischen Morris Waldman und Max Horkheimer, 17.04.1940, 11.05.1940; 6 Briefe zwischen Sidney Wallach und Max Horkheimer, 1940; 2 Briefe von Max Horkheimer an Waldman; 2 Briefe von Max Horkheimer an Landau; 1 Brief Max Horkheimer an Warburg; 1 Brief von Hans Wallenberg an Leo Löwenthal, 06.05.1940; 1 Brief von Willard W. Waller an Franz Neumann, 28.04.1941; 2 Briefe und 1 Beilage zwischen Hans Waloschek und Max Horkheimer, 04.08.1938, 31.08.1938; 4 Briefe und 2 Beilagen zwischen Emil J. Walter und Max Horkheimer, 1937, 1938; 5 Briefe und 1 Beilage zwischen Hilde Walter und Max Horkheimer, 1937, 1945; 1 Brief von Rose Walter an Max Horkheimer, 16.11.1938; 2 Briefe zwischen Yu-Chuan Wang und Max Horkheimer, 12.10.1936, 09.12.1936; 1 Brief von Rike Wankmüller-Freyh an Max Horkheimer, 06.07.1949; 1 Brief von Ilse Bach an Heinz Wartenberg, 11.11.1940; 1 Brief von Heinz Wartenberg an Richard Bach, 07.02.1941; 1 Brief von Max Horkheimer an Heinz Wartenberg, 11.03.1941; 1 Brief von Richard Bach an Max Horkheimer; 1 Brief von Franz und Hilde Wasem an Max Horkheimer, 16.02.1949; 5 Briefe zwischen Goodwin Watson und Franz Neumann, 1941; 11 Briefe und Notizen zwischen Julien Wavrinek und Max Horkheimer, 1938-1940; 1 Brief von Max Horkheimer an M. Bruhat; 2 Briefe von Max Horkheimer an Walter Benjamin, 03.05.1940;