How many methods of radiometric dating are there

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Wind-blown atmospheric dust is a major driver of global climate change. Dust impacts incoming solar radiation, changes cloud formation and drives changes in oceanic productivity. However, there are large gaps in our understanding of the source, activity and impact of dust in the geological past, meaning that dust is often not properly included in many climate models that forecast future climate. Plugging these gaps by establishing the source and flux of dust, the controls on emission and the associated climatic changes with dust deposition are therefore pressing research priorities. We work on a number of aspects of past dust and climate change. Our research includes using radiometric dating techniques such as luminescence dating to constrain the timing and rate of dust and loess deposition, attempting to source the past activity of dust emitting regions using novel single grain geochemical, mineralogical and magnetic methods on single dust particles of a range of sizes, and reconstructing past climate changes recorded in dust deposits like loess. We also utilise mineral geochemical methods to trace the linked tectonic-climatic-surface process evolution of the Tibetan plateau and Eurasia generally, using the vast Miocene-Pleistocene Eurasian Loess deposits.

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Evolutionists suggest that there are a number of species of fish that may qualify as a link between fish and amphibians.

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Loess deposits and wind-blown dust

My PhD project is focused on the development and application of different radiometric dating techniques on impact structures. Impact structures are formed by one of the most spectacular and fastest surface-modifying process on Earth, which can change the geo- and biosphere in a couple of seconds. Unfortunately the ages of many craters are not well-constrained or unknown. This is largely attributable to the lack of suitable dating material due to erosion, post-impact alteration, thermal overprinting, and contamination.

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