Revisiting the Nd-142 deficits in the 1.48 Ga Khariar alkaline rocks, India

The 146Sm–142Nd system plays a central role in tracing the silicate differentiation of the Earth prior to 4.1 Ga. After this time, given its initial abundance, the 146Sm can be considered to be extinct. Upadhyay et al. (2009) reported unexpected negative 142Nd anomalies in 1.48 Ga rocks of the Khariar nepheline syenite complex (India) and inferred that an early enriched, low-Sm/Nd reservoir must have contributed to the mantle source rocks of the Khariar complex. As 146Sm had been effectively extinct for about 2.6 billion years before the crystallisation of the Khariar samples, this Nd signature should have remained isolated from the convective mantle for at least that long. It was thus suggested that the source rock of Khariar samples had been sequestered in the lithospheric root of the Indian craton. Using a different chemical separation method, and a different Thermal Ionization Mass Spectrometry (TIMS) analysis protocol, the present study attempted to replicate these negative 142Nd anomalies, but none were found. To determine which data set is correct, we investigated three possible sources of bias between them: imperfect cancellation of Faraday collector efficiencies during multidynamic TIMS analysis, rapid sample fractionation between the sequential measurement of 146Nd/144Nd and 142Nd/144Nd, and non-exponential law behaviour resulting from so-called “domain mixing.” Incomplete cancellation of collector efficiencies was found unlikely to cause resolvable biases at the estimated level of variation among collector efficiencies. Even in the case of highly variable efficiency and resolvable biases, there is no reason to suspect that they would reproducibly affect only four rocks out of 10 analysed by Upadhyay et al. (2009). Although domain mixing may explain apparent “reverse” fractionation trends observed in some TIMS analyses, it cannot be the cause of the apparent negative anomalies in the study of Upadhyay et al. (2009). It was determined that rapid mass fractionation during the course of a multidynamic TIMS analysis can bias all measured Nd ratios. After applying an approximate correction for this effect, only one rock from Upadhyay et al. (2009) retained an apparent negative 142Nd anomaly. This, in conjunction with our new, anomaly-free data set measured at fractionation rates too low to cause bias, leads to the conclusion that the anomalies reported by Upadhyay et al. (2009) are a subtle and reproducible analytical artefact. The absence of negative 142Nd anomalies in these rocks relaxes the need for a mechanism (other than crust formation) that can isolate a Nd reservoir from the convective mantle for billions of years.

Ms. hebr. oct. 142 - [Sammelband in 2 Teilen: Handschriftenkonvolut]

Vorbesitzer: שלום יחייא; Hirsch Scheuer; Abraham Merzbacher

Ms. Barth. 142 - Mainzer Diözesanbrevier (Winterteil)

Vorbesitzer: Bartholomaeusstift Frankfurt am Main

Ms. lat. qu. 142 Katalogband - Catalogue d'une importante collection de tableaux choisis dans diverses écoles et formant le cabinet de feu M. Fr. Wilmans de Francfort su le Mein par George, appréciateur d'objets d'arts

Alte Signatur: Art.Ff. 528

Ms. lat. qu. 142 Abbildungsband - Catalogue de la collection de tableaux de Mr Frédéric Wilmans à Francfort s/M.

Alte Signatur: Art.Ff. 528

Ms. Praed. 142 - Breviloquium philosophorum de virtutibus antiquorum

Vorbesitzer: Nicolaus Bernardi; Dominikanerkloster Frankfurt am Main

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 142 - Glückwunschschreiben anlässlich des 68. Geburtstages

u.a.: Redaktion eines Artikels zur Philosophie Schopenhauers im Frankfurter Museum; Fehlende Wertschätzung Schopenhauers; Blätter für literarische Unterhaltung; Preisausgabe von der Fakultät Leipzig; Julius Frauenstädt; Johanna Schopenhauer;

Ms.Ff.F.Stoltze 3. 142 - Brief von Karl Holthof an Friedrich Stoltze

Dank für eine Veröffentlichung in der Frankfurter Latern

Ms. lat. qu. 142 - Catalogue d'une importante collection de tableaux choisis dans diverses écoles et formant le cabinet de feu M. Fr. Wilmans

Alte Signatur: Art. Ff. 528

Na 1 Nachlass Max Horkheimer, 674 - Forschungsprojekte über Antisemitismus, Vorurteil, Autorität: Einzeluntersuchungen (p. IX 141.1-24- IX 142.1-6)

Bettelheim, Bruno; Janowitz, Morris: "A Study on Anxiety and Social Aggression Among Different Groups of War Veterans", 1945-1947; Über die Anfälligkeit der Veteranen für antisemitische Propaganda, Typoskript, englisch, 1 Blatt; "Preliminary Study on the Evaluation of Intolerance Propaganda". Typoskript, 29 Blatt; "Isolationg the Patterns of Intolerance". Typoskript, 30 Blatt; "Distribution of Ethic Intolerance". Typsokript, 18 Blatt; "The Social Characteristics of the Intolerant". Typoskript, 22 Blatt; "Addendum to Social Characteristics of the Intolerant". Typoskript, 16 Blatt; "Impact of War Experiences". Typoskript, 26 Blatt; "Pattern on Sterepotypes". Typoskript, 14 Blatt; "Appendix No. 1: Schedule of Questions Employed in Interview". Typoskript, 6 Blatt; "Appendix No. 2: The Verteran´s Comment on the Interview Situation". Typoskript, 7 Blatt; "Preliminary Report of the Evaluation of Tolerance Propaganda". Typoskript, 19 Blatt; Einleitung zur Beschreibung des Forschungsprojekts, Typoskript, englisch, 1 Blatt; "Instructions for Interviewers". Typoskript, 2 Blat; "Questionaire". Typoskrip, 10 Blatt; "Prupose of the Investigation". Typoskript, 4 Blatt; "Schedule for Interviewers". Typoskript, 6 Blatt; "Appendix: Chicago Veterans Project". Typoskript, 3 Blatt; Memodanden zu Sitzungen mit Bruno Bettelheim, Edward Shils und Theodor W. Adorno; Memorandum 03.04.1945, Typoskript, 2 Blatt; Memorandum 15.03.1945; a) Typoskript, 3 Blatt; b) Typoskript, 4 Blatt; Memorandum 07.03.1945; a) Typoskript, 5 Blatt; b) Typoskript, 6 Blatt; University of Chicago: 1 Brief an Max Horkheimer, Chicago, 29.10.1945; University of Chicago, 1 Brief an Edward Shils undBruno Bettelheim, Chicago, 05.07.1945; Fine, Benjamin: "For Education against Intolerance and Prejudice"; Sonderdruck aus: The Menorah Journal, 1944, Vol. XXXII, No. 2, S. 161-180; Drucksachen, Materialien, 10 Blatt; Ackerman, Nathan W.: zum 'Psychoanalyst Project', 1945-1946; "Towards a Dynamic definition of Anti-Semitism". Typoskript, 13 Blatt; "The Use of Psychoanalytic Case Histories for the Study of Anti-Semitism". Typoskript, 14 Blatt; "Case Material Summary", Tabelle, 5 Blatt; "From for the Collection of Clinical Data on Anti-Minority and Anti-Semitic Attitudes". Als Typoskript vervielfältigt, 5 Blatt; "Case 2". Typoskript, 5 Blatt; "Case 24". Typoskript, 8 Blatt;

Ms. lat. oct. 142 - Theologische Sammelhandschrift

Die Foliierung geht nur bis Bl. 268; zusätzlich gibt es das Blatt 53a.