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Articles 421 - 450 of 1481
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The Impact Of Diet On Wastewater Treatment Works Phosphorus Loading, Chloe Down, Sean Comber
The Impact Of Diet On Wastewater Treatment Works Phosphorus Loading, Chloe Down, Sean Comber
School of Geography, Earth and Environmental Sciences
No abstract provided.
Policing The Global Countryside: Toward A Research Agenda, Richard Yarwood
Policing The Global Countryside: Toward A Research Agenda, Richard Yarwood
School of Geography, Earth and Environmental Sciences
No abstract provided.
Allometric Relationships Of Ecologically Important Antarctic And Arctic Zooplankton And Fish Species, Fokje L. Schaafsma, Carmen L. David, Doreen Kohlbach, Julia Ehrlich, Giulia Castellani, Benjamin A. Lange, Martina Vortkamp, André Meijboom, Anna Fortuna-Wünsch, Antonia Immerz, Hannelore Cantzler, Apasiri Klasmeier, Nadezhda Zakharova, Katrin Schmidt, Anton P. Van De Putte, Jan Andries Van Franeker, Hauke Flores
Allometric Relationships Of Ecologically Important Antarctic And Arctic Zooplankton And Fish Species, Fokje L. Schaafsma, Carmen L. David, Doreen Kohlbach, Julia Ehrlich, Giulia Castellani, Benjamin A. Lange, Martina Vortkamp, André Meijboom, Anna Fortuna-Wünsch, Antonia Immerz, Hannelore Cantzler, Apasiri Klasmeier, Nadezhda Zakharova, Katrin Schmidt, Anton P. Van De Putte, Jan Andries Van Franeker, Hauke Flores
School of Geography, Earth and Environmental Sciences
Allometric relationships between body properties of animals are useful for a wide variety of purposes, such as estimation of biomass, growth, population structure, bioenergetic modelling and carbon flux studies. This study summarizes allometric relationships of zooplankton and nekton species that play major roles in polar marine food webs. Measurements were performed on 639 individuals of 15 species sampled during three expeditions in the Southern Ocean (winter and summer) and 2374 individuals of 14 species sampled during three expeditions in the Arctic Ocean (spring and summer). The information provided by this study fills current knowledge gaps on relationships between length and …
Solving The Housing Market Crisis In England And Wales: From New Towns To Garden Communities, M Taylor, Stephen Essex, Olivia Wilson
Solving The Housing Market Crisis In England And Wales: From New Towns To Garden Communities, M Taylor, Stephen Essex, Olivia Wilson
School of Geography, Earth and Environmental Sciences
This paper examines the causes of the current housing crisis in England and Wales as it has emerged since the 1940s and the potential contribution of an alternative model of sustainable housing delivery in the form of garden communities. The analysis focuses on the shifts in housing needs, political ideology, spatial planning policy, the house-building industry, and the role of the land market on the supply, quality and affordability of housing since 1945. The construction of new settlements, such as the Garden Cities and New Towns programmes of the twentieth century, has once again emerged as a potential means to …
Re-Purposing Universities: The Path To Purpose, Victoria Hurth, Iain S. Stewart
Re-Purposing Universities: The Path To Purpose, Victoria Hurth, Iain S. Stewart
School of Geography, Earth and Environmental Sciences
As the extent of damage to environmental systems from our business-as-usual activity becomes ever more alarming, Universities as core social institutions are under pressure to help society lead the transition to a sustainable future. Their response to the issues, that they themselves have helped reveal, has, however, been widely criticised for being wholly inadequate. Universities can be observed to engage with sustainability issues inad-hocways, with the scale of attention and commitment dependant mainly on the level of pressure exerted by stakeholders that works to overcome aspects of inherent inertia. Sustainability initiatives can therefore be regarded mainly as bolt-ons. This mirrors …
Responding To Eruptive Transitions During The 2020–2021 Eruption Of La Soufrière Volcano, St. Vincent, E. P. Joseph, M. Camejo-Harry, T. Christopher, R. Contreras-Arratia, S. Edwards, O. Graham, M. Johnson, A. Juman, J. L. Latchman, L. Lynch, V. L. Miller, I. Papadopoulos, K. Pascal, R. Robertson, G. A. Ryan, A. Stinton, R. Grandin, I. Hamling, M. J. Jo, J. Barclay, P. Cole, B. V. Davies, R. S.J. Sparks
Responding To Eruptive Transitions During The 2020–2021 Eruption Of La Soufrière Volcano, St. Vincent, E. P. Joseph, M. Camejo-Harry, T. Christopher, R. Contreras-Arratia, S. Edwards, O. Graham, M. Johnson, A. Juman, J. L. Latchman, L. Lynch, V. L. Miller, I. Papadopoulos, K. Pascal, R. Robertson, G. A. Ryan, A. Stinton, R. Grandin, I. Hamling, M. J. Jo, J. Barclay, P. Cole, B. V. Davies, R. S.J. Sparks
School of Geography, Earth and Environmental Sciences
Abstract: A critical challenge during volcanic emergencies is responding to rapid changes in eruptive behaviour. Actionable advice, essential in times of rising uncertainty, demands the rapid synthesis and communication of multiple datasets with prognoses. The 2020–2021 eruption of La Soufrière volcano exemplifies these challenges: a series of explosions from 9–22 April 2021 was preceded by three months of effusive activity, which commenced with a remarkably low level of detected unrest. Here we show how the development of an evolving conceptual model, and the expression of uncertainties via both elicitation and scenarios associated with this model, were key to anticipating this …
Optimizing Opportunities For Oak Woodland Expansion Into Upland Pastures, Thomas R. Murphy, Mick E. Hanley, Jonathan S. Ellis, Paul H. Lunt
Optimizing Opportunities For Oak Woodland Expansion Into Upland Pastures, Thomas R. Murphy, Mick E. Hanley, Jonathan S. Ellis, Paul H. Lunt
School of Geography, Earth and Environmental Sciences
No abstract provided.
First, Do No Harm: Time For A Systems Approach To Address The Problem Of Health-Care-Derived Pharmaceutical Pollution, Kelly Thornber, Fiona Adshead, Angeliki Balayannis, Richard Brazier, Ross Brown, Sean Comber, Caroline Court, Iain Davidson, Michael Depledge, Caroline Farmer, Stuart Gibb, Richard Hixson, Claas Kirchhelle, Keith Moore, Marco Motta, Lydia Niemi, Stewart Owen, David Pencheon, Sharon Pfleger, Emma Pitchforth, Neil Powell, Wiebke Schmidt, Richard Smith, Georgina Sowman, Wendy Tyler-Batt, Helen Wilkinson, Edward Cf Wilson, Lora Fleming, William Gaze, Charles Tyler
First, Do No Harm: Time For A Systems Approach To Address The Problem Of Health-Care-Derived Pharmaceutical Pollution, Kelly Thornber, Fiona Adshead, Angeliki Balayannis, Richard Brazier, Ross Brown, Sean Comber, Caroline Court, Iain Davidson, Michael Depledge, Caroline Farmer, Stuart Gibb, Richard Hixson, Claas Kirchhelle, Keith Moore, Marco Motta, Lydia Niemi, Stewart Owen, David Pencheon, Sharon Pfleger, Emma Pitchforth, Neil Powell, Wiebke Schmidt, Richard Smith, Georgina Sowman, Wendy Tyler-Batt, Helen Wilkinson, Edward Cf Wilson, Lora Fleming, William Gaze, Charles Tyler
School of Geography, Earth and Environmental Sciences
Chemical pollution is considered one of the nine planetary boundaries, and increasing evidence suggests that we are already operating outside of this, risking irreversible environmental change. Pharmaceutical chemicals are vital components of modern health care, but their contamination of global waterways is threatening environmental and human health, contributing to biodiversity loss, driving antimicrobial resistance, and jeopardising progress towards the sustainable development goals. With the global pharmaceutical market now worth more than US$1·25 trillion and continuing to grow as populations age and suffer from more chronic, non-communicable diseases, there is an urgent need to integrate pharmaceutical pollution into sustainable health-care strategies, …
Atomic Spectrometry Update: Review Of Advances In The Analysis Of Metals, Chemicals And Materials, Simon Carter, Robert Clough, Andy Fisher, Bridget Gibson, Ben Russell
Atomic Spectrometry Update: Review Of Advances In The Analysis Of Metals, Chemicals And Materials, Simon Carter, Robert Clough, Andy Fisher, Bridget Gibson, Ben Russell
School of Geography, Earth and Environmental Sciences
This review covers advances in the analysis of advanced materials, metals, fuels and lubricants, nanostructures, ceramics, refractories, organic and inorganic chemicals, catalysts and nuclear materials by a range of techniques including X-ray, ICP, LIBS, mass spectrometry, synchrotron-based techniques, plus non-destructive and ablation surface techniques.
Fault Slip-Rates And Coulomb Stress Interactions In The Intersection Zone Of The Hope, Kelly And Alpine Faults, South Island, New Zealand, Jessie L. Vermeer, Mark C. Quigley, Robert M. Langridge, Brendan G. Duffy, Zoë K. Mildon, Manuel Lukas Diercks
Fault Slip-Rates And Coulomb Stress Interactions In The Intersection Zone Of The Hope, Kelly And Alpine Faults, South Island, New Zealand, Jessie L. Vermeer, Mark C. Quigley, Robert M. Langridge, Brendan G. Duffy, Zoë K. Mildon, Manuel Lukas Diercks
School of Geography, Earth and Environmental Sciences
Plate boundary faulting in New Zealand's South Island involves transfer of ∼50% of slip from the largest fault (Alpine Fault) onto the Hope-Kelly Fault system through a structurally complex fault intersection zone. The slip-rate contributions of faults within the Hope-Kelly system and possible role of static stresses in facilitating slip transfer are explored in this study. Lidar-based geomorphic and fault mapping combined with luminescence dating of fault-proximal sedimentary deposits constrain post-last glacial slip-rates on the Hope and Kelly faults. Dextral slip-rates on the central Hope Fault (12–15 mm/yr) decrease westward on the Taramakau section from 5.6 (+2.1/−0.7) mm/yr to 1.7 …
Microplastics In The School Classrooms Of Shiraz, Iran, Sajjad Abbasi, Andrew Turner, Reza Sharifi, Mohammad Javad Nematollahi, Mehrzad Keshavarzifard, Tahereh Moghtaderi
Microplastics In The School Classrooms Of Shiraz, Iran, Sajjad Abbasi, Andrew Turner, Reza Sharifi, Mohammad Javad Nematollahi, Mehrzad Keshavarzifard, Tahereh Moghtaderi
School of Geography, Earth and Environmental Sciences
Microplastics (MPs) are a pervasive and ubiquitous environmental contaminant. However, very little information exists on the quantities or characteristics of MPs in the indoor setting. In the present study, MPs have been isolated from settled classroom dust samples collected from 50 schools in the city of Shiraz, Iran. Concentrations of MPs on a number basis ranged from about 80 to over 56,000 MP per g of dry dust and there was an increase in concentration towards the centre and southeast of the city. The geographical distribution is attributed to a larger population and student density, higher traffic loading and greater …
Mesoscale Eddies And The Impact Of Coastal Iron Supply On Primary Production In The South Pacific Subtropical Front, Stephen M. Chiswell, Philip W. Boyd, Sylvia G. Sander, Michael J. Ellwood, Angela Milne
Mesoscale Eddies And The Impact Of Coastal Iron Supply On Primary Production In The South Pacific Subtropical Front, Stephen M. Chiswell, Philip W. Boyd, Sylvia G. Sander, Michael J. Ellwood, Angela Milne
School of Geography, Earth and Environmental Sciences
No abstract provided.
Consumer Engagement At The Uea: Deliverable 5.1, Ian Bailey, Gina Kallis, Phedeas Stephanides, Konstantinos Chalvatis
Consumer Engagement At The Uea: Deliverable 5.1, Ian Bailey, Gina Kallis, Phedeas Stephanides, Konstantinos Chalvatis
School of Geography, Earth and Environmental Sciences
No abstract provided.
A Multi-Trophic Marker Approach Reveals High Feeding Plasticity In Barents Sea Under-Ice Fauna, Doreen Kohlbach, Lukas Smik, Simon T. Belt, Haakon Hop, Anette Wold, Martin Graeve, Philipp Assmy
A Multi-Trophic Marker Approach Reveals High Feeding Plasticity In Barents Sea Under-Ice Fauna, Doreen Kohlbach, Lukas Smik, Simon T. Belt, Haakon Hop, Anette Wold, Martin Graeve, Philipp Assmy
School of Geography, Earth and Environmental Sciences
Microalgae growing within and attached to the bottom of Arctic sea ice (sympagic algae) can serve as a nutritious food resource for animals inhabiting the sea-ice water interface (under-ice fauna), particularly during the bottom ice-algal bloom in spring. As a consequence, under-ice fauna is likely impacted by sea-ice decline and changes in ice-algal primary production. To investigate this, samples of pelagic (=PPOM) and ice-associated particulate organic matter (=IPOM) and the iceassociated amphipods Apherusa glacialis and Eusirus holmii, and polar cod (Boreogadus saida), collected below ridged sea ice at two locations with pronounced differences in productivity in the northern Barents Sea …
Understanding The Complexity Of Sediment Residence Time In Rivers: Application Of Fallout Radionuclides (Frns), E. Muñoz-Arcos, G. E. Millward, C. C. Clason, C. Bravo-Linares, W. H. Blake
Understanding The Complexity Of Sediment Residence Time In Rivers: Application Of Fallout Radionuclides (Frns), E. Muñoz-Arcos, G. E. Millward, C. C. Clason, C. Bravo-Linares, W. H. Blake
School of Geography, Earth and Environmental Sciences
Riverine sediments play an important role in the healthy functioning of river ecosystems as they provide nutrients and a connectivity signal throughout the catchment sediment cascade. However, excess sediment supply to rivers can have several detrimental impacts on water quality, availability and ecology. The application of catchment management practices requires a comprehensive understanding of both spatial and temporal sediment dynamics to tackle point and diffuse river pollution. While the sources, pathways and fate of eroded sediment in river systems have been widely studied, temporal dynamics have received less attention, mainly due to the complexity of the processes and the lack …
The Potential Of Peatlands As Nature-Based Climate Solutions, Maria Strack, Scott J. Davidson, Takashi Hirano, Christian Dunn
The Potential Of Peatlands As Nature-Based Climate Solutions, Maria Strack, Scott J. Davidson, Takashi Hirano, Christian Dunn
School of Geography, Earth and Environmental Sciences
Purpose of ReviewDespite covering only 3% of the land surface, peatlands represent the largest terrestrial organic carbon stock on the planet and continue to act as a carbon sink. Managing ecosystems to reduce greenhouse gas (GHG) emissions and protect carbon stocks provide nature-based climate solutions that can play an important role in emission reduction strategies, particularly over the next decade. This review provides an overview of peatland management pathways that can contribute to natural climate solutions and compiles regional and global estimates for the size of potential GHG emission reductions.Recent FindingsDegraded peatlands may account for 5% of current anthropogenic GHG …
A Nation That Rebuilds Its Soils Rebuild Itself- An Engineer's Perspective, Karen L. Johnson, Neil D. Gray, Wendy Stone, Bryce F.J. Kelly, Mark F. Fitzsimons, Cathy Clarke, Lynsay Blake, Stephen Chivasa, Florence Mtambanengwe, Paul Mapfumo, Andy Baker, Sabrina Beckmann, Lena Dominelli, Andrew L. Neal, Tariro Gwandu
A Nation That Rebuilds Its Soils Rebuild Itself- An Engineer's Perspective, Karen L. Johnson, Neil D. Gray, Wendy Stone, Bryce F.J. Kelly, Mark F. Fitzsimons, Cathy Clarke, Lynsay Blake, Stephen Chivasa, Florence Mtambanengwe, Paul Mapfumo, Andy Baker, Sabrina Beckmann, Lena Dominelli, Andrew L. Neal, Tariro Gwandu
School of Geography, Earth and Environmental Sciences
Nations can build and rebuild degraded soils to help address climate change and potentially improve the nutritional content of food if we change policies that allow the addition of safe mineral and organic wastes to soil. We present a framework that facilitates the transition from intensive conventional to more regenerative farming practices by considering soil’s natural cycle. Our paper is presented in three parts. Firstly, we consider that ’soil is living’; just like humans, the soil biome needs a balanced diet of macro and micronutrients as well as a nurturing environment. We simplify the soil science and take a systems …
Geophagy And Microplastic Ingestion, Hoda Amiri, Mohammad Hoseini, Sajjad Abbasi, Mohammad Malakootian, Majid Hashemi, Neamatollah Jaafarzadeh, Andrew Turner
Geophagy And Microplastic Ingestion, Hoda Amiri, Mohammad Hoseini, Sajjad Abbasi, Mohammad Malakootian, Majid Hashemi, Neamatollah Jaafarzadeh, Andrew Turner
School of Geography, Earth and Environmental Sciences
No abstract provided.
Re-Colonization Of Hostile Environments By Benthic Foraminifera: An Example From Montserrat, Lesser Antilles Volcanic Arc, Malcolm B. Hart, Jodie K. Fisher, Christopher W. Smart, Rebecca Speers, Deborah Wall-Palmer
Re-Colonization Of Hostile Environments By Benthic Foraminifera: An Example From Montserrat, Lesser Antilles Volcanic Arc, Malcolm B. Hart, Jodie K. Fisher, Christopher W. Smart, Rebecca Speers, Deborah Wall-Palmer
School of Geography, Earth and Environmental Sciences
The Soufrière Hills Volcano, on the island of Montserrat, has an eruption history spanning over 2 million years. During this time the volcano has undergone multiple eruptions with intervening periods of low activity or dormancy. The most recent activity began in 1995 and has seen a series of major eruptive events. One of the most recent of these, and the focus of this study, occurred on the 20th May 2006. This major dome collapse produced 90 million m3 of volcanic material in only 3 hours, propelling ash clouds through the air and pyroclastic flows down the side of the volcano …
Informing Versus Generating A Discussion: Comparing Two Approaches To Encouraging Mitigation Of Soil Erosion Among Maasai Pastoralists, Anna Rabinovich, Vladimir Zhischenko, Mona Nasseri, Stacey C. Heath, Alpha Laizer, Francis Mkilema, Aloyce Patrick, Maarten Wynants, William H. Blake, Kelvin Mtei, Patrick Ndakidemi
Informing Versus Generating A Discussion: Comparing Two Approaches To Encouraging Mitigation Of Soil Erosion Among Maasai Pastoralists, Anna Rabinovich, Vladimir Zhischenko, Mona Nasseri, Stacey C. Heath, Alpha Laizer, Francis Mkilema, Aloyce Patrick, Maarten Wynants, William H. Blake, Kelvin Mtei, Patrick Ndakidemi
School of Geography, Earth and Environmental Sciences
Soil erosion is a critical problem for pastoralist societies that rely on healthy grazing land for their livelihoods. Previous research suggests that unsustainable land management practice is one of the factors exacerbating soil erosion, and that willingness to adjust this practice is closely linked to community land protection norms. The present research explores approaches to building stronger community norms and intentions linked to mitigating soil erosion among Maasai pastoralists in Northern Tanzania. In particular, we compare two impact approaches based on the information deficit model (exposure to scientific information) and the social identity framework (a group-based discussion). The results demonstrate …
Co2 Uptake Decreased And Ch4 Emissions Increased In First Two Years Of Peatland Seismic Line Restoration, Megan Schmidt, Scott J. Davidson, Maria Strack
Co2 Uptake Decreased And Ch4 Emissions Increased In First Two Years Of Peatland Seismic Line Restoration, Megan Schmidt, Scott J. Davidson, Maria Strack
School of Geography, Earth and Environmental Sciences
No abstract provided.
Heterogeneous Weathering Of Polypropylene In The Marine Environment, John W. Scott, Andrew Turner, Andres F. Prada, Linduo Zhao
Heterogeneous Weathering Of Polypropylene In The Marine Environment, John W. Scott, Andrew Turner, Andres F. Prada, Linduo Zhao
School of Geography, Earth and Environmental Sciences
No abstract provided.
Atomic Spectrometry Update: Review Of Advances In Elemental Speciation, Robert Clough, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, Julian F. Tyson
Atomic Spectrometry Update: Review Of Advances In Elemental Speciation, Robert Clough, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, Julian F. Tyson
School of Geography, Earth and Environmental Sciences
This review covers advances in elemental speciation by a range of coupled techniques, including HPLC-ICP-MS, HPLC-HG-AFS and GC-ICP-MS.
An Exploration Of The Contribution Of Embodied, Situated Research Strategies To Cultural Ecosystem Services And Landscape Assessment Frameworks: An Environmental Empathy Case Study, K Łucznik, Jv Serrano, J Martin
An Exploration Of The Contribution Of Embodied, Situated Research Strategies To Cultural Ecosystem Services And Landscape Assessment Frameworks: An Environmental Empathy Case Study, K Łucznik, Jv Serrano, J Martin
School of Geography, Earth and Environmental Sciences
Since the Millennium Ecosystem Assessment in 2005, interest has increased in cultural ecosystem services (CESs) research to understand the complexity of the non-material benefits that people obtain from ecosystems. The intangible and interactive characteris-tics of CESs present many challenges regarding how to approach, quantify and even de-fine CESs. In this paper, we suggest looking at CESs through the lens of embodied and situated cognition theories. We advocate that such an approach should be applied to the development stage of CES research projects, as the embodied and situated experience of the site aids the development of research questions and future interventions. …
Continuous-Flow Synthesis Of Mesoporous Sba-15, Christopher M.A. Parlett, Hamidreza Arandiyan, Lee J. Durndell, Mark A. Isaacs, Antonio Torres Lopez, Roong J. Wong, Karen Wilson, Adam F. Lee
Continuous-Flow Synthesis Of Mesoporous Sba-15, Christopher M.A. Parlett, Hamidreza Arandiyan, Lee J. Durndell, Mark A. Isaacs, Antonio Torres Lopez, Roong J. Wong, Karen Wilson, Adam F. Lee
School of Geography, Earth and Environmental Sciences
No abstract provided.
Adaptation Of The Revised Universal Soil Loss Equation (Rusle) To Soil Loss Modeling In A Semi-Arid Watershed: A Case Study From Western High Atlas, Morocco, Latifa Bou-Imajjane, Mhamed Alaeddine Belfoul, Martin Stokes, Abdenbi Elaloui, Adnane Labbaci, Ayady H El, Yassine Ez-Zaouy
Adaptation Of The Revised Universal Soil Loss Equation (Rusle) To Soil Loss Modeling In A Semi-Arid Watershed: A Case Study From Western High Atlas, Morocco, Latifa Bou-Imajjane, Mhamed Alaeddine Belfoul, Martin Stokes, Abdenbi Elaloui, Adnane Labbaci, Ayady H El, Yassine Ez-Zaouy
School of Geography, Earth and Environmental Sciences
No abstract provided.
Metal Contamination Of Intertidal Sediment And Macroalgae In An Area Impacted By Paint From Abandoned Boats, Andrew Turner
Metal Contamination Of Intertidal Sediment And Macroalgae In An Area Impacted By Paint From Abandoned Boats, Andrew Turner
School of Geography, Earth and Environmental Sciences
No abstract provided.
Tracking Hunter-Gatherer Impact On Vegetation In Last Interglacial And Holocene Europe: Proxies And Challenges, Anastasia Nikulina, Katharine Macdonald, Fulco Scherjon, E Pearce, Marco Davoli, Jens Christian Svenning, Emily Vella, Marie José Gaillard, Anhelina Zapolska, Frank Arthur, Alexandre Martinez, Kailin Hatlestad, Florence Mazier, Maria Antonia Serge, Karl Johan Lindholm, Ralph Fyfe, Hans Renssen, Didier M. Roche, Sjoerd Kluiving, Wil Roebroeks
Tracking Hunter-Gatherer Impact On Vegetation In Last Interglacial And Holocene Europe: Proxies And Challenges, Anastasia Nikulina, Katharine Macdonald, Fulco Scherjon, E Pearce, Marco Davoli, Jens Christian Svenning, Emily Vella, Marie José Gaillard, Anhelina Zapolska, Frank Arthur, Alexandre Martinez, Kailin Hatlestad, Florence Mazier, Maria Antonia Serge, Karl Johan Lindholm, Ralph Fyfe, Hans Renssen, Didier M. Roche, Sjoerd Kluiving, Wil Roebroeks
School of Geography, Earth and Environmental Sciences
No abstract provided.
Book Review: The Guitar: Tracing The Grain Back To The Tree, P Simpson
Book Review: The Guitar: Tracing The Grain Back To The Tree, P Simpson
School of Geography, Earth and Environmental Sciences
No abstract provided.
Dating Martian Mafic Crust; Microstructurally Constrained Baddeleyite Geochronology Of Enriched Shergottites Northwest Africa (Nwa) 7257, Nwa 8679 And Zagami, Lg Staddon, Jr Darling, Wh Schwarz, Nr Stephen, Et Al
Dating Martian Mafic Crust; Microstructurally Constrained Baddeleyite Geochronology Of Enriched Shergottites Northwest Africa (Nwa) 7257, Nwa 8679 And Zagami, Lg Staddon, Jr Darling, Wh Schwarz, Nr Stephen, Et Al
School of Geography, Earth and Environmental Sciences
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 a geochronometer within highly shocked lithologies, are less well constrained. To investigate the effects of shock metamorphism on baddeleyite U-Pb chronology, we have conducted high-resolution microstructural analysis and in-situ U-Pb isotopic measurements for baddeleyite within enriched basaltic shergottites Northwest Africa (NWA) 7257, NWA 8679 and Zagami. Electron backscatter diffraction (EBSD) analyses of baddeleyite reveal significant microstructural heterogeneity within individual thin sections, recording widespread partial to complete reversion from high-pressure (≥3.3 GPa) orthorhombic zirconia polymorphs. …