Professor Caroline L. Peacock

Mud, mud, glorious mud – mineralogical controls on Earth’s climate

Mineralogical Society Distinguished Lecture GGE Seminar Series, Keele University
Wednesday 9th June 2021 - 13:00-14:00 
Talk by Professor Caroline Peacock, University of Leeds, UK

Mud mud glorious mud - mineralogical controls on Earth’s climate Trace metals are essential for life and the concentration of trace metals in the surface oceans regulates photosynthetic activity, which in turn regulates the drawdown of atmospheric carbon dioxide and ultimately climate. The processes governing the concentraton of trace metals in the oceans are complex but in most cases the ocean sediments provide an important sink for these bio-essential elements, locking up trace metals with sediment minerals. The iron and manganese minerals are particularly reactive towards trace metals and can exert a primary control on trace metal concentrations in the sediments and overlying water column. Investigating the processes by which trace metals become locked into these minerals, and whether trace metals are retained or released by these minerals as they age and change with time, is critical to understanding the role of marine sediments in the carbon cycle and climate. This talk will introduce the importance of trace metals in the ocean system, the importance and peculiarities of marine sediment minerals, the processes by which trace metals are scavenged by these intriguing phases, and what happens to trace metals as these phases change during sediment diagenesis. We will see that the global scale cycling of trace metals in the oceans is governed by molecular scale interactions between trace metals and minerals.

All are welcome to join. There is no charge for the event, but all delegates are asked to register, as this event will be via the Mineralogical Society Zoom account.

Event date
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Zoom meeting
Dr Guido Meinhold
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01782 733617

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