The 9th Mapping Ancient Africa seminar, and first of 2023, took place on Thursday 19 January. The seminar was delivered by Celine Vidal (University of Cambridge) and showcased recent work on the dating of volcanic deposits to constrain the age of hominin fossils in eastern Africa.
Vidal, C.M., Lane, C.S., Asrat, A., Barfod, D.N., Mark, D.F., Tomlinson, E.L., Tadesse, A.Z., Yirgu, G., Deino, A., Hutchison, W., Mounier, A. & Oppenheimer, C. (2022) Age of the oldest known Homo sapiens from eastern Africa. Nature601, 579-583. https://doi.org/10.1038/s41586-021-04275-8
Vidal, C.M., Fontijn, K., Lane, C.S., Asrat, A., Barfod, D., Tomlinson, E.L., Piermattei, A., Hutchison, W., Tadesse, A.Z., Yirgu, G., Deino, A., Moussallam, Y., Mohr, P., Williams, F., Mather, T.A., Pyle, D.M. & Oppenheimer, C. (2022) Geochronology and glass geochemistry of major Pleistocene eruptions in the Main Ethiopian Rift: Towards a regional tephrostratigraphy. Quaternary Science Reviews 290, 107601. https://dx.doi.org/10.1016/j.quascirev.2022.107601
In the coming weeks lots of pollen can be collected. Due to the nice, sunny weather birch trees are in full flower and release their pollen into the air. This is of course not so good news for the individuals sensitized to the pollen of birch because they can suffer from hay fever symptoms.
Next to birch also the ash trees are flowering. The black buds of the ash branches have bursted, releasing the purple anthers (first figure). Among those anthers you can see some that release their yellow pollen (second figure).
For more about our project on pollen and pollution in the Netherlands see other posts: