A5071316073- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Hydrocarbon exploration and reservoir analysis
- Geological and Geochemical Analysis
- Evolution and Paleontology Studies
- Geological formations and processes
- Advanced Neuroimaging Techniques and Applications
- Medical Imaging Techniques and Applications
- Spaceflight effects on biology
- Geochemistry and Geologic Mapping
- Isotope Analysis in Ecology
- Geological and Geophysical Studies Worldwide
- CO2 Sequestration and Geologic Interactions
- earthquake and tectonic studies
- Astro and Planetary Science
- Enhanced Oil Recovery Techniques
- Space Exploration and Technology
- Coal Properties and Utilization
- Hydraulic Fracturing and Reservoir Analysis
- Paleontology and Evolutionary Biology
- Plant Diversity and Evolution
National Oceanography Centre
2010-2021
University of Southampton
2010-2021
BG Group (United Kingdom)
2010-2016
Shell (Japan)
2016
There is an unexplained terrestrial mass extinction at the Devonian-Carboniferous boundary (359 million years ago). The discovery in east Greenland of malformed land plant spores demonstrates that was coincident with elevated UV-B radiation demonstrating ozone layer reduction. Mercury data through level prove that, unlike other extinctions, there were no planetary scale volcanic eruptions. Importantly, a major climatic warming ended intense final glacial cycle latest Devonian ice age. A...
Basaltic lava flows and ignimbrite units around Puerto de Santiago, SW Tenerife, were investigated as potential analogues for hydrocarbon‐bearing volcanic reservoir rocks. Conventional helium porosity air permeability measurements together with the results of a micro‐focus X‐ray computed tomography study integrated field observations on flow morphology continuity defined internal zones. Individual typically comprise distinct tops, cores bases, piles showing repeated cycles these three...
Abstract Twelve clastic core samples from the Walloon Coal Measures, Surat Basin were tested for disintegration in artificially produced fluids varying ionic strength. XRD data confirm presence of smectite (water sensitive clay) samples. Flow-through rock experiments demonstrate that higher concentration and soluble plagioclase is, quicker disintegrates artificial low strength fluid. Pre-soaking rocks with high fluid reduces rate fluids. This is explained by very strong clay-clay clay-sand...
There is an unexplained terrestrial mass extinction at the Devonian-Carboniferous boundary (359 million years ago). The discovery in East Greenland of highly aberrant malformed land plant spores demonstrates that was coincident with elevated UV-B radiation demonstrating ozone layer reduction. Mercury data through level proves that, unlike other extinctions, there were no planetary scale volcanic eruptions. Significantly, embedded within a single lacustrine cycle represents major episode...
Abstract The Devonian/Carboniferous Boundary (DCB) interval is associated with mass extinction, isotope excursions and a short glacial episode. This study investigates how boundary extinction environmental change expressed in the high-palaeolatitudinal record of Bolivian Altiplano (western Gondwana). A latest Devonian early Carboniferous section has been investigated using sedimentology, palynology, total organic carbon bulk δ 13 C . Colpacucho Formation Late shelfal–marine siliciclastic...
Summary Volcanic reservoir rocks host significant hydrocarbon reserves but are poorly understood in terms of their properties: especially porosity and permeability characteristics. Basalt lava flows particular interest due to global abundance. Field investigations confirmed that basaltic typically comprise three key facies: flow tops, cores bases. Use traditional poro-perm techniques, alongside high-resolution micro-focus X-ray computed tomography (μCT), enabled the pore architecture be...
Application of micro-focus X-ray computed tomography (μCT) to a suite variably altered volcanic rocks allows quantification and 3D visualisation the pore space down μm scale. This provides unprecedented insights into morphologies when combined with traditional petrographic observations, becomes powerful tool analyse interaction secondary mineralisation porosity. We determine porosity is controlled by amount vesiculation, abundance quench fractures original glass content. Permeability often...