A5079862441- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Geological and Geophysical Studies
- Marine Biology and Ecology Research
- Paleontology and Stratigraphy of Fossils
- Seismic Imaging and Inversion Techniques
- Hydrocarbon exploration and reservoir analysis
- Isotope Analysis in Ecology
- Ocean Acidification Effects and Responses
- Marine and coastal ecosystems
- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geological formations and processes
- Astro and Planetary Science
- Geological Modeling and Analysis
- Geomagnetism and Paleomagnetism Studies
- Geological Studies and Exploration
- NMR spectroscopy and applications
- Cephalopods and Marine Biology
- Calcium Carbonate Crystallization and Inhibition
- Offshore Engineering and Technologies
- Marine and coastal plant biology
- High-pressure geophysics and materials
- Geophysical Methods and Applications
Potters Bar Community Hospital
2022-2024
University College London
2013-2022
Institute of Oceanology
2022
Chinese Academy of Sciences
2022
University of New Caledonia
2019
Expedition (United Kingdom)
2019
International Ocean Discovery Program
2019
Ministry of Agriculture and Forestry and Food
2019
Taranaki Base Hospital
2019
Stockholm University
2019
Abstract Data from International Ocean Discovery Program (IODP) Expedition 371 reveal vertical movements of 1–3 km in northern Zealandia during early Cenozoic subduction initiation the western Pacific Ocean. Lord Howe Rise rose deep (∼1 km) water to sea level and subsided back, with peak uplift at 50 Ma north between 41 32 south. The New Caledonia Trough 2–3 55 45 Ma. We suggest these elevation changes resulted crust delamination mantle flow that led slab formation. propose a “subduction...
Abstract Anthropogenic carbon dioxide emissions are forcing rapid ocean chemistry changes and causing acidification (OA), which is of particular significance for calcifying organisms, including planktonic coccolithophores. Detailed analysis coccolithophore skeletons enables comparison calcite production in modern fossil cells order to investigate biomineralization response ancient coccolithophores climate change. Here we show that the two dominant taxa across Paleocene–Eocene Thermal Maximum...
Abstract The Eocene‐Oligocene transition (EOT; ∼34 Ma) was one of the most prominent global cooling events Cenozoic, coincident with emergence continental‐scale ice‐sheets on Antarctica. Calcareous nannoplankton experienced significant assemblage turnover at a time long‐term surface ocean and trophic conditions, suggesting cause‐effect relationships between Antarctic glaciation, broader climate changes, response phytoplankton communities. To better evaluate timing nature these relationships,...
Abstract Sediment mass accumulation rate (MAR) is a proxy for paleoceanographic conditions, especially if biological productivity generated most of the sediment. We determine MAR records from pelagic calcareous sediments in Tasman Sea based on analysis 11 boreholes and >3 million seismic reflection horizon picks. Seismic data regions 10,000–30,000 km 2 around each borehole were analyzed using International Ocean Discovery Program Expedition 371 other boreholes. Local was affected by...
Integrated Ocean Drilling Program Expedition 342 (June-July 2012) cored nine sites and 18 holes (Sites U1403-U1411) on the J-Anomaly Southeast Newfoundland ridges in the NW Atlantic Ocean. These recovered sections ranging from Pleistocene to upper Albian, but expedition particularly focussed recovery of expanded Paleogene successions with high quality microfossil preservation. This was achieved by choosing with thick packages drift-type sediments topographic highs that would maximise...
Key extinctions in two major planktonic foraminiferal groups and high taxic turnover radiolarians have led to the identification of Middle/Late Eocene Turnover (MLET) point towards significant palaeoclimatic and/or palaeoceanographic changes at around 38 million years ago. Here we present quantitative calcareous nannofossil data from Ocean Drilling Program Site 1052 (Blake Nose, western North Atlantic) order investigate response phytoplankton during MLET. Our show only minor shifts taxon...
Abstract Environmental and biotic responses to early Eocene hyperthermal events in the southwest Pacific are critical for global paleoclimate reconstructions during Cenozoic greenhouse intervals, but detailed multidisciplinary studies generally missing from this time location. carbonate sediments were recovered International Ocean Discovery Program Expedition 371 at Site U1510 on southern Lord Howe Rise Tasman Sea. Part of Early Climatic Optimum (EECO; 53.26–49.14 Ma) superimposed have been...
Abstract The absolute position during the Cenozoic of northern Zealandia, a continent that lies more than 90% submerged in southwest Pacific Ocean, is inferred from global plate motion models, because local paleomagnetic constraints are virtually absent. We present new paleolatitude using data International Ocean Discovery Program Site U1507 on Zealandia and U1511 drilled adjacent Tasman Sea Basin. After correcting for inclination shallowing, five estimates provide trajectory past middle...
SUMMARY Rapid onset of subduction tectonics across the western Pacific convergent margins in early Eocene was followed by a slower phase margin growth proto Tonga-Kermadec system north Zealandia during middle to tectonic adjustment. We present new age constraints from International Ocean Discovery Program Expedition 371 borehole data on deformation events northern Zealandian sediments that document formation boundary northwest New Zealand. The shows shortening event lasted up 20 myr and...
The abundance, wide distribution, and high evolutionary rates of calcareous nannofossils provide a powerful reliable tool for correlating dating marine sedimentary records, especially during the Cenozoic.Their assemblage turnover has been documented extensively across Eocene-Oligocene transition (EOT), but without parallel framework toward detailed biostratigraphy.We present highly resolved semiquantitative nannofossil data from continuous record recovered International Ocean Discovery...