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Introduction
You can read Geoff's profile at: http://www.enveast.ac.uk/student-profiles
Publications
Publications (9)
The late Miocene-early Pliocene was a time of global cooling and the development of modern meridional thermal gradients. Equatorial Pacific sea surface conditions potentially played an important role in this global climate transition, but their evolution is poorly understood. Here, we present the first continuous late Miocene-early Pliocene (8.0-4....
A model to estimate the annual layer thickness of deposited snowfall at a deep ice core site, compacted by vertical strain with respect to depth, is assessed using ultra-high-resolution laboratory analytical techniques. A recently established technique of high-resolution direct chemical analysis of ice using ultra-violet laser ablation inductively-...
The late Miocene to early Pliocene carbonate-rich sediments recovered at Integrated Ocean Drilling Program (IODP) Site U1338 during the Expedition 320/321 Pacific Equatorial Age Transect (PEAT) program contain abundant calcareous nanno- and microfossils. Geochemical proxies from benthic and planktonic foraminiferal and coccolithophore calcite could...
The late Miocene to early Pliocene carbonate-rich sediments recovered at Integrated Ocean Drilling Program (IODP) Site U1338 during the Expedition 320/321 Pacific Equatorial Age Transect (PEAT) program contain abundant calcareous nanno- and microfossils. Geochemical proxies from benthic and planktonic foraminiferal and coccolithophore calcite could...
Globally, late Miocene (11.61-5.33 Ma) to early Pliocene (5.33 Ma–3.60 Ma) climate records indicate relative long-term stability, but regional signals are less clear. For example, the extent to which Equatorial Pacific
climate may have been influenced by changes in boundary conditions such as the closure of the Central
American Seaway (13–1.9 Ma) r...
The late Miocene (11.61 - 5.33 Ma) was one of the more stable climatic periods of the Cenozoic. Superimposed on this stable background climate, a number of threshold events occurred, including the late Miocene Carbon Isotope Shift (CIS, 7.6-6.6 Ma) and the Messinian Salinity Crisis (MSC, 5.96-5.33 Ma). The goal of our study is to constrain the back...
