Ausst. 117/118 - Hl. Georg im Kampfe mit dem Drachen. Hl. Wolfgang : Teigdrucke

Vorbesitzer: Dominikanerkloster Frankfurt am Main;

Na 1 Nachlass Max Horkheimer, 356 - Korrespondenzen mit Herbert Marcuse (p. V 118, 1-383)

287 Briefe und Beilagen zwischen Herbert Marcuse und Max Horheimer, 1950-1973;

Ms. lat. oct. 118 - Stundenbuch nach dem Gebrauch von Rom

Vorbesitzer: Nicolaus Sandonnino (?); Zaramellini (?)

Na 1 Nachlass Max Horkheimer, 666 - "Research Project on Anti-Semitism" (p. IX 113-IX 118)

Max Horkheimer (?): "Why Research on Antisemitism?" (12.11.1943), a) Typoskript, 8 Blatt, b) Typoskript mit eigenhändigen Korrekturen und handschriftlichen Ergänzungen, 7 Blatt, c) Teilstück, Typoskript, 1 Blatt; Isaque Graeber: "Modern Antisemitism in Western Society. A Comperative Study of 'Critical Situations'" (1943), Typoskript mit eigenhändigen Korrekturen, 118 Blatt; Institute of Social Research: "Report on Isaque Graebers Study on Modern Antisemitism in Western Society. A Comperative Study of 'Critical Situations'" (24.11.1943), Typoskript, 73 Blatt; Institute of Social Research: "The Project of Political Antisemitism" (30.11.1943) a) Typoskript mit handschriftlichen Ergänzungen, 29 Blatt, b) Kurzfassung, Typoskript, 6 Blatt; "Memorandum to John Doe. Subject: Research Project on Antisemitism" (30.11.1943), Typoskript mit handschriftlichen Ergänzungen, 2 Blatt; Institute of Social Research: "Project on Antisemitism. Studies Completed or in Preparation" (Dezember 1943), Entwurf, Typoskript, 2 Blatt;

Helium and neon isotopes in oceanic crust of ODP Hole 118-735B

In an attempt to determine the helium and neon isotopic composition of the lower oceanic crust, we report new noble gas measurements on 11 million year old gabbros from Ocean Drilling Program site 735B in the Indian Ocean. The nine whole rock samples analyzed came from 20 to 500 m depth below the seafloor. Helium contents vary from 3.3*10**-10 to 2.5*10**-7 ccSTP/g by crushing and from 5.4*10**-8 to 2.4*10**-7 ccSTP/g by melting. 3He/4He ratios vary between 2.2 and 8.6 Ra by crushing and between 2.9 and 8.2 by melting. The highest R/Ra ratios are similar to the mean mid-ocean ridge basalt (MORB) ratio of 8+/-1. The lower values are attributed to radiogenic helium from in situ alüha-particle production during uranium and thorium decay. Neon isotopic ratios are similar to atmospheric ratios, reflecting a significant seawater circulation in the upper 500 m of exposed crust at this site. MORB-like neon, with elevated 20Ne/22Ne and 21Ne/22Ne ratios, was found in some high temperature steps of heating experiments, but with very small anomalies compared to air. These first results from the lower oceanic crust indicate that subducted lower oceanic crust has an atmospheric 20Ne/22Ne ratio. Most of this neon must be removed during the subduction process, if the ocean crust is to be recirculated in the upper mantle, otherwise this atmospheric neon will overwhelm the upper mantle neon budget. Similarly, the high (U+Th)/3He ratio of these crustal gabbros will generate very radiogenic 4He/3He ratios on a 100 Ma time scale, so lower oceanic crust cannot be recycled into either MORB or oceanic island basalt without some form of processing.