Publications by authors named "Eric Tonui"
Article Synopsis
- The Antarctic ice cap plays a crucial role in influencing global ocean circulation and climate, but evidence of its glacial history is limited.
- New research focuses on sulfates found in glaciogenic deposits from the Lewis Cliff Ice Tongue, revealing distinct isotope signatures that provide insights into past environmental conditions.
- These findings suggest that ice-free cold deserts may have existed in Antarctica since the Miocene, indicating a fluctuating ice sheet size while maintaining a hydrological cycle similar to today's.
The canonical initial 26Al/27Al ratio of 4.5 x 10(-5) has been a fiducial marker for the beginning of the solar system. Laser ablation and whole-rock multiple-collector inductively coupled plasma-source mass spectrometry magnesium isotope analyses of calcium- and aluminum-rich inclusions (CAIs) from CV3 meteorites demonstrate that some CAIs had initial 26Al/27Al values at least 25% greater than canonical and that the canonical initial 26Al/27Al cannot mark the beginning of solar system formation.
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