A5001527678- Astro and Planetary Science
- Planetary Science and Exploration
- Geological and Geochemical Analysis
- Space Exploration and Technology
- Geology and Paleoclimatology Research
- Geological Modeling and Analysis
- Isotope Analysis in Ecology
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- Nuclear Physics and Applications
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Geological formations and processes
- Electron and X-Ray Spectroscopy Techniques
- Geotourism and Geoheritage Conservation
- Geography Education and Pedagogy
- Stellar, planetary, and galactic studies
- Advanced Electron Microscopy Techniques and Applications
- earthquake and tectonic studies
- Cultural Heritage Materials Analysis
- Spacecraft Design and Technology
- Research Data Management Practices
- Heme Oxygenase-1 and Carbon Monoxide
- Vitamin C and Antioxidants Research
- Geographic Information Systems Studies
University of Plymouth
2017-2024
Geological Society of London
2023-2024
Imperial College London
2023-2024
Natural History Museum
2020
German Oceanographic Museum
2020
Direct links between carbonaceous chondrites and their parent bodies in the solar system are rare. The Winchcombe meteorite is most accurately recorded chondrite fall. Its pre-atmospheric orbit cosmic-ray exposure age confirm that it arrived on Earth shortly after ejection from a primitive asteroid. Recovered only hours falling, composition of largely unmodified by terrestrial environment. It contains abundant hydrated silicates formed during fluid-rock reactions, carbon- nitrogen-bearing...
Abstract The Winchcombe meteorite is a CM chondrite breccia composed of eight distinct lithological units plus cataclastic matrix. degree aqueous alteration varies between intensely altered CM2.0 and moderately CM2.6. Although no lithology dominates, three heavily rock types (CM2.1–2.3) represent >70 area%. Tochilinite–cronstedtite intergrowths (TCIs) are common in several lithologies. Their compositions can vary significantly, even within single lithology, which prevent clear assessment...
Negative impacts of global climate change are predicted for a range taxa. Projections predict marked increases in sea surface temperatures and ocean acidification (OA), arguably placing calcifying organisms at most risk. While detrimental environmental on the growth ultrastructure bivalve mollusc shells have been shown, rapid diel fluctuations pH typical coastal systems often not considered. Mytilus edulis, an economically important marine calcifier vulnerable to change, were exposed current...
Abstract Fusion crusts form during the atmospheric entry heating of meteorites and preserve a record conditions that occurred deceleration in atmosphere. The fusion crust Winchcombe meteorite closely resembles other stony meteorites, particular CM2 chondrites, since it is dominated by olivine phenocrysts set glassy mesostasis with magnetite, highly vesicular. Dehydration cracks are unusually abundant Winchcombe. Failure this weak layer an additional ablation mechanism to produce large...
'GeoFutures' is the Geological Society of London’s flagship conference series focussing on 21st century geoscience and solutions that geoscientists can offer to global challenges. The cycles through Society’s five strategic science themes, with inaugural 2023 meeting centred theme 'Digital Geoscience' 2024 focussed ‘Planetary Geoscience’.Both meetings have sought foster collaboration within out community by bringing together researchers, engineers,...
The geosciences have a long association with economic development and growth owing to the legacy of coal, oil gas exploration, mining. However, in 21st century where cleaned up their act are leading way sustainability climate science, digital technologies, space exploration globally, it’s often still hard shake outdated perceptions our field, anecdotally this has been cited as contributor diminishing student numbers seen across university programmes (Stephen et al. 2023; 2024).This...
Ureilite meteorites are arguably our only large suite of samples from the mantle a dwarf planet and typically contain greater abundances diamond than any known rock. Some also lonsdaleite, which may be harder diamond. Here, we use electron microscopy to map relative distribution coexisting diamond, graphite in ureilites. These maps show that lonsdaleite tends occur as polycrystalline grains, sometimes with distinctive fold morphologies, partially replaced by + rims cross-cutting veins....
Abstract The Winchcombe meteorite fell on February 28, 2021 and was the first recovered fall in UK for 30 years, carbonaceous chondrite. widely observed by meteor camera networks, doorbell cameras, eyewitnesses, 213.5 g (around 35% of final mass) collected quickly—within 12 h—of its fall. It, therefore, represents an opportunity to study very pristine extra‐terrestrial material requires appropriate careful curation. a narrow (600 m across) strewn field ~8.5 km long oriented approximately...
Abstract As part of an integrated consortium study, we have undertaken O, Cd, Cr, Si, Te, Ti, and Zn whole rock isotopic measurements the Winchcombe CM2 meteorite. δ 66 values determined for two aliquots are +0.29 ± 0.05‰ (2SD) +0.45 (2SD). The difference between these analyses likely reflects sample heterogeneity. isotope compositions show excellent agreement with published data. 114 Cd a single aliquot is 0.04‰ (2SD), which close to previous result Murchison. 130 Te three gave...
Martian meteorite Northwest Africa (NWA) 8114 – a paired stone to NWA 7034 provides an opportunity examine the thermal history of martian regolith and study near-surface processes ancient environmental conditions near impact crater on Mars. Our reports petrographic alteration textures focuses pyroxene iron oxide grains. Some clasts show exsolution lamellae, indicating high temperature magmatic origin slow cooling. However, transmission electron microscopy reveals that other predominantly are...
Abstract The Mighei‐like carbonaceous (CM) chondrites have been altered to various extents by water–rock reactions on their parent asteroid(s). This aqueous processing has destroyed much of the primary mineralogy these meteorites, and degree alteration is highly heterogeneous at both macroscale nanoscale. Many CM meteorites are also heavily brecciated juxtaposing clasts with different histories. Here we present results from fine‐grained team consortium study Winchcombe meteorite, a recent...
Fieldwork is an integral part of geoscience subjects, but changing career pathways and student demographics have major implications for the future compulsory fieldwork. The ways in which fieldwork taught learning outcomes it fulfils urgently need updating.
Baddeleyite (monoclinic; m-ZrO2) is a widespread accessory phase within shergottites. However, the effects of shock loading on baddeleyite U-Pb isotopic systematics, and therefore its reliability as geochronometer highly shocked lithologies, are less well constrained. To investigate metamorphism chronology, we have conducted high-resolution microstructural analysis in-situ measurements for enriched basaltic shergottites Northwest Africa (NWA) 7257, NWA 8679 Zagami. Electron backscatter...
A survey of astronomy and geophysics professionals has revealed prevalent bullying harassment within the sector, with women marginalized groups most likely to suffer. It is time for community face up issue discuss ways tackling it.
Abstract Northwest Africa 6963 (NWA 6963) is a coarse‐grained, gabbroic Martian meteorite that further extends our sample collection, both compositionally and texturally. Gabbroic shergottite NWA provides direct petrologic evidence of intrusive igneous conditions within the crust. Here, we analyzed geochemical zoning profiles microstructural‐crystallographic information from electron backscattered diffraction augite pigeonite to constrain crystallization history 6963. Compositional reveal...
Abstract In many orogenic gold deposits, is located in quartz veins. Understanding vein development at the microstructural scale may therefore provide insights into processes influencing distribution of gold, its morphology, and relationship to faulting. We present evidence that deformation during aseismic periods produce characteristic microstructures crystallographic preferred orientations, which are observed across multiple deposits events. Quartz veins comprise a matrix coarse,...
Abstract Ureilite meteorites contain regions of localized olivine reduction to Fe metal widely accepted have formed by redox reactions involving oxidation graphite, a process known as secondary smelting. However, the possibility that other reductants might be responsible for this has largely been ignored. Here, 17 ureilite samples are investigated assess whether, instead smelting only solid reactants, CHOS gas/fluid could caused much Features consistent with gas‐ or supercritical...
Generation of mouse models for COVID-19 pathogenesis is keen interest as they would allow efficient investigation disease mechanisms, well providing a vaccine and drug development platform. However, the current transgenic hACE2 ...The classical manifestation pulmonary infection. After host cell entry via human angiotensin–converting enzyme II (hACE2), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus can infect epithelial cells, ...
The aqueously altered CM carbonaceous chondrite meteorites can be used to investigate the nature and transport of volatiles in early solar system. We present preliminary results an effort collect 2D infrared (IR) spectral maps from matrix fine-grained rims (FGRs) material that surround chondrules inclusions Murchison CM2 meteorite using synchrotron IR micro-spectroscopy. main features mid-IR spectra FGRs occur at ∼3500 cm−1 ∼1000 are attributed OH/H2O SiO bonds phyllosilicates anhydrous...