Abstract
We present in this study a 10Be profile from a deep-sea sediment section extending to 3.5 Ma. The 10Be concentration ranges at 2-14 × 108 atoms/g and shows a clear decay trend. The flux of 10Be ranges at 1-5 × 106 atoms/cm2 y and averages at ≈ 2.5 × 106 atoms/cm2 y. Enhancements in the 10Be record occur at the paleomagnetic reversals and excursions suggesting strong effect of changes in the geomagnetic field intensity. Indication of climatic-related variability is also observed from the generally higher 10Be values during interglacial compared to glacial periods.
Original language | English |
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Pages (from-to) | 513-517 |
Number of pages | 5 |
Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
Volume | 172 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 2000 |
Externally published | Yes |
Keywords
- Accelerator mass spectrometry
- Be
- Marine sediment
- Quaternary
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation