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Eingeladener Vortrag
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Analytische Methoden zur Feststellung der Herkunft eines Baustoffes sind bislang kaum entwickelt worden. In Deutschland gibt es eine Reihe von Kalkiagerstätten, die in unterschiedlichen geologischen Formationen Kalk oder Dolomit enthalten. Das unterschiedliche geologische Alter von Kalken sowie die ursprüngliche mineralische Zusammensetzung und die geologische Historie spiegeln sich im 87Sr/88Sr-lsotopenverhältnis weder. Mittels der Thermionen-Massenspektrometrie kann dieses Verhältnis ermittelt und somit zur Herkunftsbestimmung eines Kalkes herangezogen werden.