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Prof Clare Warren

Academic Director, Graduate School

Graduate School

clare.warren@open.ac.uk

ORCID Profile

Biography

I am the Director of the Graduate School,  responsible for the academic quality assurance and enhancement of the postgraduate research programme at the Open University.

In addition, I am Professor of Metamorphic Geology in the School of Environment, Earth and Ecosystem Sciences.

 

Research interests

My research determines how and when deeply buried rocks record the timing of their burial and exhumation, and how elements of societal interest are concentrated and diluted during metamorphic cycling.

 

Teaching interests

I am a Senior Fellow of the Higher Education Academy and a Recognised Supervisor under the UKGCE Supervior Recognition scheme.  At postgraduate level I specialize in teaching research and researcher development skills. At undergraduate level I specialises in teaching geochronology, metamorphic geology and structural geology.

 

External collaborations

2022 Awarded the Geological Society of London's Dewey Medal

2020 Awarded the Metamorphic Studies Group Barrow Award

 

2023-present Chair of NERC Environmental Isotope Facility Panel C

2021-present Member of Belgian FWO Peer Review College

2020-2014 Associate Editor of the Journal of Metamorphic Geology

2018-2021 Open University REF UoA B7 Panel Chair

2018-present Member of NERC Peer Review College

 

 

Projects

CENTA2 Doctoral Training Partnership (2019 intake)

The Central England NERC Training Alliance (CENTA), is a consortium of research intensive Universities (Open, Birmingham, Leicester, Loughborough, Warwick and Cranfield) and research institutes who together to provide excellence in doctoral research training. CENTA encompasses research activities within three broad themes: Climate and Environmental Sustainability; Organisms and Ecosystems; and Dynamic Earth. The Open University STEM Faculty has match-funded 3 studentships per year throughout the project.

Fluids driving the evolution of the continental crust: influence of pathway networks, fluxes, and time scales

Fluids transfer and concentrate elements, enhance chemical reactions and facilitate deformation within the Earth’s crust. The transported elements may eventually concentrate in economically important reserves. Finding and responsibly exploiting such reserves depends on understanding how, when and where fluids flow from the scale of micrometres to kilometres. FluidNET will provide a stimulating cross-disciplinary environment for the training of a cohort of early stage researchers in skills that are essential across the resources sector. These researchers will apply field observations, innovative analytical techniques and creative modelling approaches; to communicate effectively with a broad range of audiences; and to engage effectively with end-users of their research. Such skills will meet future employment demand and will enhance Europe’s capacity to provide innovative solutions to critical resource requirements.

How, when and what do geochronometers record in deformed metamorphic rocks

Geochronology fundamentally underpins our knowledge of how the continental crust forms and evolves by providing the rates and timescales of burial, metamorphism and deformation. High spatial resolution in-situ analyses (via laser ablation) allow for the precise and accurate measurement of isotope ratios from individual geochronometer minerals within thin sections. These isotope ratios provide tightly constrained ages that can be linked to petrographic observations and mineral chemical analyses, all of which underpin the modern field of ‘petrochronology’ [1]. There is a still considerable debate about the importance and role of changing metamorphic conditions, bulk rock chemistry, deformation and fluid infiltration in determining when the geological clock starts ticking in deformed and metamorphosed rocks that have experienced a lengthy and protracted geological history. In-situ U-Th-Pb geochronology datasets from metamorphosed and deformed rocks commonly yield a range of dates that spans more time than the analytical uncertainty of a single “age” would suggest. This span of ages therefore suggests either that: (1) protracted crystallization took place over a range of pressure, temperature and deformation (P-T-d) conditions, (2) there was incomplete isotopic resetting during cooling and exhumation, or (3) there has been analytical mixing of mineral domains of different age. Recent studies have demonstrated that individual samples that have undergone similar P-T-d conditions, i.e. from the same outcrop, can yield strikingly varied mineral dates [2], indicating that the rock’s bulk chemical composition exhibits a strong control on the reactions that allow the geochronometer minerals to crystallise or dissolve [3]. It is also well known that different geochronometer minerals within the same rock respond differently to pressure, temperature and deformation [4,5]. The major aim of this project is to develop new U-Th-Pb petrochronological tools and workflows to help constrain how and when time is recorded in deformed rocks during burial and exhumation of the continental crust. This will be achieved by: (1) analysing different samples that are closely spatially associated (e.g. on the sub-metre scale) but which have different bulk chemical compositions, and (2) analysing rocks of similar bulk composition in less strained versus more strained localities. A suite of analytical datasets using the petrochronology approach will be applied to each rock unit, encompassing imaging techniques, petrography, microstructural analysis, in-situ U-Th-Pb geochronology, and modelling of metamorphic conditions. Integration of these data will inform how different geochronometers respond during the deformation and metamorphism of a rock unit.

CENTA2 DTP Extension (2024 start)

The Central England NERC Training Alliance (CENTA), is a consortium of research intensive Universities (Open, Birmingham, Leicester, Loughborough, Warwick and Cranfield) and research institutes who together to provide excellence in doctoral research training. CENTA encompasses research activities within three broad themes: Climate and Environmental Sustainability; Organisms and Ecosystems; and Dynamic Earth. The Open University STEM Faculty has match-funded 3 studentships per year throughout the project.

CENTA 2018 Intake

The Central England NERC Training Alliance (CENTA), is a consortium of research intensive Universities (Open, Birmingham, Leicester, Loughborough, Warwick and Cranfield) and research institutes who together to provide excellence in doctoral research training. CENTA encompasses research activities within three broad themes: Climate and Environmental Sustainability; Organisms and Ecosystems; and Dynamic Earth. The Open University STEM Faculty has match-funded 3 studentships in the 2018 intake.

Landscape stories: engaging with environmental science through storytelling

We will work with a grassroots ethnic minority walking organisation to co-design walking routes that showcase aspects of the geological, landscape and ecological evolution of their local area that specifically link to OU research. This will: • Improve visibility of EES (and EES careers) within diverse communities who are under-represented in EES research • Engage these communities in cutting-edge EES from the Open University • Encourage confidence in walk leaders to communicate the science of the environment to their walk participants. • Train Earth/environmental scientists in mixed-methods approaches to public engagement evaluation

CENTA2 DTP 2022 Intake

The Central England NERC Training Alliance (CENTA), is a consortium of research intensive Universities (Open, Birmingham, Leicester, Loughborough, Warwick and Cranfield) and research institutes who together to provide excellence in doctoral research training. CENTA encompasses research activities within three broad themes: Climate and Environmental Sustainability; Organisms and Ecosystems; and Dynamic Earth. The Open University STEM Faculty has match-funded 3 studentships per year throughout the project.

Walking the Walk: Co-producing approaches to diversifying participation in Earth and environmental science education and careers

For many people working in the environmental sciences today, the first spark of interest in the field came from experiences in nature. Whether walking, hiking or visiting the coast, immersion in the natural world can often plant the seeds of curiosity that lead to a lifelong desire to know more about how and why it works. In the UK, much of the natural “the countryside” is perceived as an overwhelmingly “white” space, hostile to people from non-white backgrounds. Not only does this mean that for many that seed is never planted, but the lack of familiarity with experiences in “the outdoors” means the fieldwork seen as necessary for an environmental education (and commonly required for accredited degree programs) presents a barrier to degree level study. This is a major problem for the field, as environmental impacts such as those driven by climate change affect everyone. Financial, cultural and opportunity barrier to accessing the outdoors, are recognised by both environmental organisations and grassroots groups. This project will bring together environmental scientists and grassroot community groups to tackle barriers in order to make outdoor learning accessible to all. We will test approaches to bring environmental science learning directly to those trying to make the UK countryside a more inclusive environment and learn from the experiences of both environmental scientists and activist groups in spending time immersed in nature.

CENTA2 DTP 2021 Intake

The Central England NERC Training Alliance (CENTA), is a consortium of research intensive Universities (Open, Birmingham, Leicester, Loughborough, Warwick and Cranfield) and research institutes who together to provide excellence in doctoral research training. CENTA encompasses research activities within three broad themes: Climate and Environmental Sustainability; Organisms and Ecosystems; and Dynamic Earth. The Open University STEM Faculty has match-funded 3 studentships per year throughout the project.

CENTA2 DTP 2020 Intake

The Central England NERC Training Alliance (CENTA), is a consortium of research intensive Universities (Open, Birmingham, Leicester, Loughborough, Warwick and Cranfield) and research institutes who together to provide excellence in doctoral research training. CENTA encompasses research activities within three broad themes: Climate and Environmental Sustainability; Organisms and Ecosystems; and Dynamic Earth. The Open University STEM Faculty has match-funded 3 studentships per year throughout the project.

CENTA 2017 intake

CENTA is a geographically and scientifically coherent consortium offering a wide range of excellent NERC science embedded in a vibrant multidisciplinary environment. The Universities (Birmingham, Leicester, Loughborough, Open and Warwick) and Institutes (British Geological Survey and Centre for Ecology and Hydrology) have a strong track record of producing PhD graduates fit for further research or other relevant employment. The Open University STEM Faculty has match-funded 3 studentships in the 2017 intake.

CENTA 2016 intake

CENTA is a geographically and scientifically coherent consortium offering a wide range of excellent NERC science embedded in a vibrant multidisciplinary environment. The Universities (Birmingham, Leicester, Loughborough, Open and Warwick) and Institutes (British Geological Survey and Centre for Ecology and Hydrology) have a strong track record of producing PhD graduates fit for further research or other relevant employment. The Open University STEM Faculty has match-funded 3 studentships in the 2016 intake.

Crust-mantle exchange in orogenic lower crust: the record in high temperature eclogites

Crust-mantle exchange in orogenic lower crust: the record in high temperature eclogites project. PhD studentship was awarded to Eleni Wood.

NERC Doctoral Training Partnerships

CENTA is a geographically and scientifically coherent consortium offering a wide range of excellent NERC science embedded in a vibrant multidisciplinary environment. The Universities (Birmingham, Leicester, Loughborough, Open and Warwick) and Institutes (British Geological Survey and Centre for Ecology and Hydrology) have a strong track record of producing PhD graduates fit for further research or other relevant employment. We will advance PhD training significantly by offering broad and holistic educational opportunities in the environmental sciences, including innovative approaches to cohort training, supported by the Open University’s Virtual Research Environment learning platform. Where we offer leading national capability, we will offer training to other NERC consortia in addition to CENTA students. We are match-funding this bid for 20 studentships annually.CENTA defines its four areas of science excellence as follows: 1) Anthropogenic impacts and environmental sustainability. 2) Evolution of organisms and ecosystems. 3) Dynamic Earth. 4) Organisms.

Engaging Environmental Research: Developing Productive Partnerships With End-users - Staff costs

This award allows Prof Rick Holliman and Dr Clare Warren to offer three week-long hands-on training workshops in 2017 for postgraduate researchers in the environmental sciences. The workshops will teach researchers how to identify and engage with end-users and research stakeholders.

Publications

Book Chapter

Approaches and best practices for dating orogenic processes using 40Ar/39Ar geochronology (2024)

Journal Article

Co-Constructing “Third Spaces” for Engagement with and for Minoritized Community Groups and Environmental Scientists (2024)

Allanite U–Pb dating places new constraints on the high‐pressure to high‐temperature evolution of the deep Himalayan crust (2024)

Kyanite petrogenesis in migmatites: resolving melting and metamorphic signatures (2023)

Critical metal enrichment in crustal melts: the role of metamorphic mica (2022)

Understanding earthquakes using the geological record: an introduction (2021)

The closure of the Rocas Verdes Basin and early tectono-metamorphic evolution of the Magallanes Fold-and-Thrust Belt, southern Patagonian Andes (52–54°S) (2021)

Dating continental subduction beneath the Samail Ophiolite: garnet, zircon, and rutile petrochronology of the As Sifah eclogites, NE Oman (2021)

Structural and metamorphic inheritance controls strain partitioning during orogenic shortening (Kalak Nappe Complex, Norwegian Caledonides) (2020)

Protracted shearing at mid‐crustal conditions during large‐scale thrusting in the Scandinavian Caledonides (2020)

Evolution of the melt source during protracted crustal anatexis: An example from the Bhutan Himalaya (2020)

Determining cooling rates from mica 40Ar/ 39Ar thermochronology data: effect of cooling path shape (2019)

The nature and significance of the Faroe-Shetland Terrane: linking Archaean basement blocks across the North Atlantic (2019)

Garnet–monazite rare earth element relationships in sub-solidus metapelites: a case study from Bhutan (2019)

The Mesozoic along-strike tectono-metamorphic segmentation of Longmen Shan (eastern Tibetan plateau) (2018)

Replacement reactions and deformation by dissolution and precipitation processes in amphibolites (2018)

Numerical models of P–T, time and grain-size controls on Ar diffusion in biotite: an aide to interpreting 40Ar/39Ar ages (2018)

Influence of dissolution/reprecipitation reactions on metamorphic greenschist to amphibolite-facies mica 40Ar/39Ar ages in the Longmen Shan (eastern Tibet) (2018)

Recycling Argon through Metamorphic Reactions: the Record in Symplectites (2018)

The identification and significance of pure sediment-derived granites (2017)

Anomalously old biotite 40Ar/39Ar ages in the NW Himalaya (2017)

Plate tectonics: When ancient continents collide (2017)

Supporting future scholars of engaged research (2017)

Argon redistribution during a metamorphic cycle: Consequences for determining cooling rates (2016)

Using monazite and zircon petrochronology to constrain the P–T–t evolution of the middle crust in the Bhutan Himalaya (2016)

Influence of deformation and fluids on Ar retention in white mica: Dating the Dover Fault, Newfoundland Appalachians (2016)

The geology and tectonics of central Bhutan (2016)

Argon behaviour in an inverted Barrovian sequence, Sikkim Himalaya: the consequences of temperature and timescale on 40Ar/39Ar mica geochronology (2015)

Using U-Th-Pb petrochronology to determine rates of ductile thrusting: time windows into the Main Central Thrust, Sikkim Himalaya (2015)

Lithological, rheological, and fluid infiltration control on 40Ar/39Ar ages in polydeformed rocks from the West Cycladic detachment system, Greece (2015)

Developing an inverted Barrovian sequence; insights from monazite petrochronology (2014)

Timing and conditions of peak metamorphism and cooling across the Zimithang Thrust, Arunachal Pradesh, India (2014)

Tectonic interleaving along the Main Central Thrust, Sikkim Himalaya (2014)

Tectono-metamorphic evolution of the Jomolhari massif: variations in timing of syn-collisional metamorphism across western Bhutan (2014)

The signature of devolatisation: extraneous 40Ar systematics in high-pressure metamorphic rocks (2013)

Exhumation of (ultra)-high-pressure terranes: concepts and mechanisms (2013)

Metamorphic rocks seek meaningful cooling rate: interpreting 40Ar/39Ar ages in an exhumed ultra-high pressure terrane (2012)

The low-grade Canal de las Montañas Shear Zone and its role in the tectonic emplacement of the Sarmiento Ophiolitic Complex and Late Cretaceous Patagonian Andes orogeny, Chile (2012)

When can muscovite 40Ar/39Ar dating constrain the timing of metamorphic exhumation? (2012)

Using white mica 40Ar/39Ar data as a tracer for fluid flow and permeability under high-P conditions: Tauern Window, Eastern Alps (2012)

Interpreting high-pressure phengite 40Ar/39Ar laserprobe ages: an example from Saih Hatat, NE Oman (2011)

Probing the depths of the India-Asia collision: U-Th-Pb monazite chronology of granulites from NW Bhutan (2011)

Rapid synconvergent exhumation of Miocene-aged lower orogenic crust in the eastern Himalaya (2011)

Metamorphic history of a syn-convergent orogen-parallel detachment: the South Tibetan detachment system, Bhutan Himalaya (2010)

The Grenville Orogen explained? Applications and limitations of integrating numerical models with geological and geophysical data (2010)

Subduction erosion modes: comparing finite element numerical models with the geological record (2009)

Crustal structure: a key constraint on the mechanism of ultra-high-pressure rock exhumation (2009)

Formation and exhumation of ultra-high-pressure rocks during continental collision: role of detachment in the subduction channel (2008)

Modelling tectonic styles and ultra-high pressure (UHP) rock exhumation during the transition from oceanic subduction to continental collision (2008)

Deep subduction and rapid exhumation: role of crustal strength and strain weakening in continental subduction and ultrahigh-pressure rock exhumation (2008)

Structural and stratigraphic controls on the origin and tectonic history of a subducted continental margin, Oman (2007)

Oxidized eclogites and garnet-blueschists from Oman: P–T path modelling in the NCFMASHO system (2006)

Dating the geologic history of Oman’s Semail ophiolite: insights from U-Pb geochronology (2005)

Hydrochemical associations and depth profiles of arsenic and fluoride in Quaternary loess aquifers of northern Argentina (2005)

Dating the subduction of the Arabian continental margin beneath the Semail ophiolite, Oman (2003)

Presentation / Conference

Exploring perspectives of minoritized community walking group leaders to make access to nature more equitable, diverse and inclusive (2023)

Boosting the petrochronology arsenal: REE partitioning between garnet and monazite in Bhutanese pelitic metasediments (2017)

Age of eclogite-facies metamorphism and exhumation in northwestern Bhutan (2016)

Fast subduction, slow exhumation: dating continental subduction beneath the Oman ophiolite (2016)

Chemical evolution of Himalayan leucogranites based on an O, U-Pb and Hf study of zircon (2015)

How and when does argon redistribute during a metamorphic cycle? (2015)

Crystallisation, cooling or contamination: interpreting dispersion in metamorphic 40Ar/39Ar ages (2014)

Linking age to stage? Processes and pitfalls in dating metamorphic cycles. (2014)

STAMP across the Eastern Himalaya: ages and stages of burial, transformation and early exhumation (2013)

High resolution determination of orogenic cooling rates: an eastern Himalayan example (2013)

The signature of devolatisation: excess 40Ar in high pressure rocks (2012)

Metamorphic rocks seek meaningful cooling rates: new views from muscovite 40Ar/39Ar dating (2012)

Characterising exhumation of mid- and lower-orogenic crust during late-stage collision: a case history from NW Bhutan (2012)

40Ar/39Ar systematics in an exhumed ultra-high pressure terrane: implications for the timing of exhumation (2012)

Constraining the cooling history of the Greater Himalayan Sequence in NW Bhutan (2011)

Re-evaluating the closure temperature concept in metamorphic rocks: when does 40Ar/39Ar dating constrain exhumation? (2011)

Working Paper

Co-constructing ‘third spaces’ for engagement between minoritized community groups and environmental scientists (2024)