Susan Ivy Ochs: Catalogue data in Autumn Semester 2021

Name Prof. em. Dr. Susan Ivy Ochs
FieldQuaternary Geology and Geomorphology
Labor für Ionenstrahlphysik (LIP)
ETH Zürich, HPK H 25
Otto-Stern-Weg 5
8093 Zürich
Telephone+41 44 633 38 86
DepartmentEarth Sciences
RelationshipRetired Adjunct Professor

651-4901-00LQuaternary Dating Methods Information 3 credits2GI. Hajdas, M. Christl, S. Ivy Ochs
AbstractReconstruction of time scales is critical for all Quaternary studies in both Geology and Archeology. Various methods are applied depending on the time range of interest and the archive studied. In this lecture, we focus on the last 50 ka and the methods that are most frequently used for dating Quaternary sediments and landforms in this time range.
ObjectiveStudents will be made familiar with the details of the six dating methods through lectures on basic principles, analysis of case studies, solving of problem sets for age calculation and visits to dating laboratories.

At the end of the course students will:
1. understand the fundamental principles of the most frequently used dating methods for Quaternary studies.
2. be able to calculate an age based on data of the six methods studied.
3. choose which dating method (or combination of methods) is suitable for a certain field problem.
4. critically read and evaluate the application of dating methods in scientific publications.
Content1. Introduction: Time scales for the Quaternary, Isotopes and decay
2. Radiocarbon dating: principles and applications
3. Cosmogenic nuclides: 3He,10Be, 14C, 21Ne, 26Cl, 36Cl
4. U-series disequilibrium dating
5. Luminescence dating
6. Introduction to incremental: varve counting, dendrochronology and ice cores chronologies
7. Cs-137 and Pb-210 (soil, sediments, ice core)
8. Summary and comparison of results from several dating methods at specific sites
Prerequisites / NoticeVisit to radiocarbon lab, cosmogenic nuclide lab, accelerator (AMS) facility.

Visit to Limno Lab and sampling a sediment core
Optional (individual): 1-5 days hands-on radiocarbon dating at the C14 lab at ETH Hoenggerebrg

Required: attending the lecture, visiting laboratories, handing back solutions for problem sets (Exercises)
651-4903-00LQuaternary Geology and Geomorphology3 credits2GS. Ivy Ochs, M. Luetscher, H. Stoll
AbstractIn this course the student is familiarized with the manner in which glacial, periglacial, fluvial, gravitational, karst, coastal and aeolian processes produce characteristic landforms and sedimentary deposits. The student is introduced to subdivisions of the Quaternary, with a focus on climatic changes in the Alps. Competency in these themes is gained through practical exercises and discussion.