Dr Ria Mitchell

Dr Ria Mitchell

Postdoctoral Researcher,Co-Evolution Initiative

Department: Earth Sciences
Division: ES Invertebrates and Plants Palaeobiology
Phone: + 44 (0)207942 5582

Specialisms

Palaeosols; modern soils; sedimentary petrology; fluvial processes; sedimentary geochemical analysis; terrestrial geology.

Summary

Currently working on: 1. Using new physical and chemical analytical methods to characterize modern-day primitive soils and mineral substrates associated with cryptogamic ground covers. Cryptogams (bryophytes (mosses, liverworts, hornworts), lichen, fungi, cyanobacteria, algae) represent extant relatives of the first terrestrial organisms in the Early Palaeozoic. Studying modern examples gives us the opportunity to deduce the effect cryptogamic ground covers have on weathering and, ultimately, soil formation, and how this might have contributed to larger earth systems, such as the carbon cycle. 2: Sedimentary systems and palaeosol formation associated with the 1.1 Ga North American Midcontinental Rift. 3: The colonization of the terrestrial environment by primitive organisms following volcanic activity. 4: I am also interested in the evolution of fluvial systems in the geological past, and geochemical changes exhibited by palaeosols across major boundaries, particularly mass extinction events.

Qualifications

Degrees

PhD, Royal Holloway, University of London, Earth Science, 2006 - 2010

MSci Geoscience, Royal Holloway, University of London, Geology, 2002 - 2006

Employment history

Non-academic

Assistant Science Technician, Royal Borough of Kensington and Chelsea (Saint Thomas More Language College), Science Department, 2012 - 2013

Scanning Electron Facility Manager, Royal Holloway, University of London, 2007 - 2010

Undergraduate demonstrator/teaching assistant, Royal Holloway, University of London, Earth Sciences, 2007 - 2010

Laboratory Research Technician, Royal Holloway, University of London, 2006 - 2007

Rock crushing and assistant laboratory technician, Royal Holloway, University of London, Earth Science, 2006 - 2010

Highlighted publications

Mitchell RL, Sheldon ND (2016) Sedimentary provenance and weathering processes in the 1.1Ga Midcontinental Rift of the Keweenaw Peninsula, Michigan, USA. Precambrian Research, 275 : 225 - 240. doi: 10.1016/j.precamres.2016.01.017

Mitchell R, Mitchell RL, Kenrick P (2014) New analytical approaches for characterising micro-soils and the weathering effect of cryptogamic ground covers. British Sedimentological Research Group (BSRG) Annual General Meeting, 2012 12 - 20 12 12

Mitchell RL, Kenrick P, Pressel S (2014) Micro CT: A new approach for assessing the effect of cryptogamic ground covers on the development of soils.. Linnean Society of London: Palaeobotany Specialist Group Autumn Meeting 2014, 1211 11 - 12 11 11

Mitchell RL, Sheldon ND (2010) The ∼1100Ma Sturgeon Falls paleosol revisited: Implications for Mesoproterozoic weathering environments and atmospheric CO2 levels. Precambrian Research, 183 (4) : 738 - 748. doi: 10.1016/j.precamres.2010.09.003

Mitchell R (2010) Palaeoenvironmental implications of 1.1 Ga palaeosols. PhD Thesis. (Supervisor(s)) Sheldon ND, Collinson ME.

Mitchell RL, Sheldon N (2009) Weathering and paleosol formation in the 1.1Ga Keweenawan Rift. Precambrian Research, 168 (3-4) : 271 - 283. doi: 10.1016/j.precamres.2008.09.013

Fieldwork

New Zealand fieldwork
2015 - 2015.

Iceland
2014 - 2014.

South Wales
2013 - 2014.

North Wales
2013 - 2013.

Committees

Other, Postgraduate representitive for the Royal Holloway Earth Science student society (Lyell Society), 2008 - 2009.

Memberships

Member, International Association of Sedimentologists, 2014 - on going.

Council member, 2008 - 2009.

Events

Conference Attendance

Attendee/participant, Workshop, Networking, Professional development, Other, Tomography for Scientific Advancement (ToScA) conference, 2014, (Conference), 2014 - 2014.

Attendee/participant, Networking, Professional development, International Association of Bryologist Conference 2013, (Conference), 2013 - 2013.

Workshop Attendance

Attendee/participant, Workshop, Networking, Professional development, Other, 10th New Phytologist Workshop: Origin and evolution of plants and their interactions with fungi, (Workshop), 2014 - 2014.

Attendee/participant, Workshop, Networking, Professional development, Other, NERC Taxonomic Principles and Tools in Botanical Research workshop, (Workshop), 2014 - 2014.

Publications

Mitchell RL, Sheldon ND (2016) Sedimentary provenance and weathering processes in the 1.1Ga Midcontinental Rift of the Keweenaw Peninsula, Michigan, USA. Precambrian Research, 275 : 225 - 240. doi: 10.1016/j.precamres.2016.01.017

Mitchell R (2015, 2 2) Traveling Geologist: Moss and liverwort hunting in Iceland - September 2014. Traveling Geologist

Mitchell R, Mitchell RL, Kenrick P (2014) New analytical approaches for characterising micro-soils and the weathering effect of cryptogamic ground covers. British Sedimentological Research Group (BSRG) Annual General Meeting, 2012 12 - 20 12 12

Mitchell R (2014) https://nhm.academia.edu/RiaMitchell

Mitchell RL, Kenrick P, Pressel S (2014) Micro CT: A new approach for assessing the effect of cryptogamic ground covers on the development of soils.. Linnean Society of London: Palaeobotany Specialist Group Autumn Meeting 2014, 1211 11 - 12 11 11

Mitchell R, Kenrick P (2014) Micro-CT: a new, non-invasive approach to characterizing primitive soils. 9th European Palaeobotany and Palynology Conference, 268 8 - 26 8 8

Mitchell RL, Kenrick P (2014) Micro-CT: a new, non-invasive approach to characterizing primitive soils. 19th International Sedimentological Congress: Sedimentology at the crossroads of new frontiers, 188 8 - 18 8 819th International Sedimentological Congress: Sedimentology at the crossroads of new frontiers (abstract book)

Mitchell RL, Sheldon ND (2010) The ∼1100Ma Sturgeon Falls paleosol revisited: Implications for Mesoproterozoic weathering environments and atmospheric CO2 levels. Precambrian Research, 183 (4) : 738 - 748. doi: 10.1016/j.precamres.2010.09.003

Mitchell R (2010) Palaeoenvironmental implications of 1.1 Ga palaeosols. PhD Thesis. (Supervisor(s)) Sheldon ND, Collinson ME.

Mitchell RL, Sheldon N (2009) Weathering and paleosol formation in the 1.1Ga Keweenawan Rift. Precambrian Research, 168 (3-4) : 271 - 283. doi: 10.1016/j.precamres.2008.09.013

Sheldon ND, Mitchell RL, Collinson ME, Hooker JJ (2009) Eocene-Oligocene transition paleoclimate record from paleosols, Isle of Wight (UK), in C. Koeberl and A. Montanari (eds) The Late Eocene Earth - Hothouse, Icehouse, and Impacts. Geological Society of America Special Papers, 452 : 249 - 260.

Mitchell R (2006) An Interpretation of Palaeoclimate from Palaeosols across the Eocene – Oligocene Boundary on the Isle of Wight. Master's Thesis. (Supervisor(s)) Sheldon ND, Collinson ME.

Sheldon ND, Mitchell RL, Collinson ME, Hooker JJ (2006) Steady paleoclimatic conditions across the Eocene-Oligocene transition indicated by paleosols on two continents. Geological Society of America Abstracts with Programs, 38 :

Contributed Publications

Mitchell R (2015, 2 2) Traveling Geologist: Moss and liverwort hunting in Iceland - September 2014. Traveling Geologist

Mitchell R, Hayes P (2014) www.twitter.com/NHMPalaeobotany

Mitchell R (2014) ResearchGate

Sheldon ND, Mitchell RL, Collinson ME, Hooker JJ (2008) Eocene-Oligocene transition paleoclimatic and paleoenvironmental record from the Isle of Wight (UK). GSA special papers - Late Eocene Earth: Hothouse Icehouse, and Impacts, GSA Special papers 01/2009 (452) : 249 - 259. doi: 10.1130/2009.2452(16)​

Courses taught

Postgraduate: 'The Geological History of Soils (Palaeosols)' - at NERC Soils and Regolith course: from parent rock to critical resource
2/2015.

Invited and keynote speaker

The Geological History of Soils (Palaeosols), NERC Soils and Regolith: rock to critical resource (course): 25/2/2015.

Linnean Society of London Palaeobotany Specialist Group - Autumn Meeting 2014,

Micro-CT: a new, non-invasive approach to characterizing primitive soils, 9th European Palaeobotany and Palynology Conference: 26/8/2014.

International Association of Sedimentologists - International Sedimentological Congress conference, 2014, 18/8/2014.

Public Engagement

External activities

Blast from the Past, 9/11/20132013 - 2013.

Internal activities

Science Uncovered 2013, 20/9/2013

Introduction

Summary

Currently working on: 1. Using new physical and chemical analytical methods to characterize modern-day primitive soils and mineral substrates associated with cryptogamic ground covers. Cryptogams (bryophytes (mosses, liverworts, hornworts), lichen, fungi, cyanobacteria, algae) represent extant relatives of the first terrestrial organisms in the Early Palaeozoic. Studying modern examples gives us the opportunity to deduce the effect cryptogamic ground covers have on weathering and, ultimately, soil formation, and how this might have contributed to larger earth systems, such as the carbon cycle. 2: Sedimentary systems and palaeosol formation associated with the 1.1 Ga North American Midcontinental Rift. 3: The colonization of the terrestrial environment by primitive organisms following volcanic activity. 4: I am also interested in the evolution of fluvial systems in the geological past, and geochemical changes exhibited by palaeosols across major boundaries, particularly mass extinction events.

Qualifications

Degrees

PhD, Royal Holloway, University of London, Earth Science, 2006 - 2010

MSci Geoscience, Royal Holloway, University of London, Geology, 2002 - 2006

Employment history

Non-academic

Assistant Science Technician, Royal Borough of Kensington and Chelsea (Saint Thomas More Language College), Science Department, 2012 - 2013

Scanning Electron Facility Manager, Royal Holloway, University of London, 2007 - 2010

Undergraduate demonstrator/teaching assistant, Royal Holloway, University of London, Earth Sciences, 2007 - 2010

Laboratory Research Technician, Royal Holloway, University of London, 2006 - 2007

Rock crushing and assistant laboratory technician, Royal Holloway, University of London, Earth Science, 2006 - 2010

Highlighted publications

Mitchell RL, Sheldon ND (2016) Sedimentary provenance and weathering processes in the 1.1Ga Midcontinental Rift of the Keweenaw Peninsula, Michigan, USA. Precambrian Research, 275 : 225 - 240. doi: 10.1016/j.precamres.2016.01.017

Mitchell R, Mitchell RL, Kenrick P (2014) New analytical approaches for characterising micro-soils and the weathering effect of cryptogamic ground covers. British Sedimentological Research Group (BSRG) Annual General Meeting, 2012 12 - 20 12 12

Mitchell RL, Kenrick P, Pressel S (2014) Micro CT: A new approach for assessing the effect of cryptogamic ground covers on the development of soils.. Linnean Society of London: Palaeobotany Specialist Group Autumn Meeting 2014, 1211 11 - 12 11 11

Mitchell RL, Sheldon ND (2010) The ∼1100Ma Sturgeon Falls paleosol revisited: Implications for Mesoproterozoic weathering environments and atmospheric CO2 levels. Precambrian Research, 183 (4) : 738 - 748. doi: 10.1016/j.precamres.2010.09.003

Mitchell R (2010) Palaeoenvironmental implications of 1.1 Ga palaeosols. PhD Thesis. (Supervisor(s)) Sheldon ND, Collinson ME.

Mitchell RL, Sheldon N (2009) Weathering and paleosol formation in the 1.1Ga Keweenawan Rift. Precambrian Research, 168 (3-4) : 271 - 283. doi: 10.1016/j.precamres.2008.09.013

Projects

Fieldwork

New Zealand fieldwork
2015 - 2015.

Iceland
2014 - 2014.

South Wales
2013 - 2014.

North Wales
2013 - 2013.

Professional activities

Committees

Other, Postgraduate representitive for the Royal Holloway Earth Science student society (Lyell Society), 2008 - 2009.

Memberships

Member, International Association of Sedimentologists, 2014 - on going.

Council member, 2008 - 2009.

Events

Conference Attendance

Attendee/participant, Workshop, Networking, Professional development, Other, Tomography for Scientific Advancement (ToScA) conference, 2014, (Conference), 2014 - 2014.

Attendee/participant, Networking, Professional development, International Association of Bryologist Conference 2013, (Conference), 2013 - 2013.

Workshop Attendance

Attendee/participant, Workshop, Networking, Professional development, Other, 10th New Phytologist Workshop: Origin and evolution of plants and their interactions with fungi, (Workshop), 2014 - 2014.

Attendee/participant, Workshop, Networking, Professional development, Other, NERC Taxonomic Principles and Tools in Botanical Research workshop, (Workshop), 2014 - 2014.

Publications

Publications

Mitchell RL, Sheldon ND (2016) Sedimentary provenance and weathering processes in the 1.1Ga Midcontinental Rift of the Keweenaw Peninsula, Michigan, USA. Precambrian Research, 275 : 225 - 240. doi: 10.1016/j.precamres.2016.01.017

Mitchell R (2015, 2 2) Traveling Geologist: Moss and liverwort hunting in Iceland - September 2014. Traveling Geologist

Mitchell R, Mitchell RL, Kenrick P (2014) New analytical approaches for characterising micro-soils and the weathering effect of cryptogamic ground covers. British Sedimentological Research Group (BSRG) Annual General Meeting, 2012 12 - 20 12 12

Mitchell R (2014) https://nhm.academia.edu/RiaMitchell

Mitchell RL, Kenrick P, Pressel S (2014) Micro CT: A new approach for assessing the effect of cryptogamic ground covers on the development of soils.. Linnean Society of London: Palaeobotany Specialist Group Autumn Meeting 2014, 1211 11 - 12 11 11

Mitchell R, Kenrick P (2014) Micro-CT: a new, non-invasive approach to characterizing primitive soils. 9th European Palaeobotany and Palynology Conference, 268 8 - 26 8 8

Mitchell RL, Kenrick P (2014) Micro-CT: a new, non-invasive approach to characterizing primitive soils. 19th International Sedimentological Congress: Sedimentology at the crossroads of new frontiers, 188 8 - 18 8 819th International Sedimentological Congress: Sedimentology at the crossroads of new frontiers (abstract book)

Mitchell RL, Sheldon ND (2010) The ∼1100Ma Sturgeon Falls paleosol revisited: Implications for Mesoproterozoic weathering environments and atmospheric CO2 levels. Precambrian Research, 183 (4) : 738 - 748. doi: 10.1016/j.precamres.2010.09.003

Mitchell R (2010) Palaeoenvironmental implications of 1.1 Ga palaeosols. PhD Thesis. (Supervisor(s)) Sheldon ND, Collinson ME.

Mitchell RL, Sheldon N (2009) Weathering and paleosol formation in the 1.1Ga Keweenawan Rift. Precambrian Research, 168 (3-4) : 271 - 283. doi: 10.1016/j.precamres.2008.09.013

Sheldon ND, Mitchell RL, Collinson ME, Hooker JJ (2009) Eocene-Oligocene transition paleoclimate record from paleosols, Isle of Wight (UK), in C. Koeberl and A. Montanari (eds) The Late Eocene Earth - Hothouse, Icehouse, and Impacts. Geological Society of America Special Papers, 452 : 249 - 260.

Mitchell R (2006) An Interpretation of Palaeoclimate from Palaeosols across the Eocene – Oligocene Boundary on the Isle of Wight. Master's Thesis. (Supervisor(s)) Sheldon ND, Collinson ME.

Sheldon ND, Mitchell RL, Collinson ME, Hooker JJ (2006) Steady paleoclimatic conditions across the Eocene-Oligocene transition indicated by paleosols on two continents. Geological Society of America Abstracts with Programs, 38 :

Contributed Publications

Mitchell R (2015, 2 2) Traveling Geologist: Moss and liverwort hunting in Iceland - September 2014. Traveling Geologist

Mitchell R, Hayes P (2014) www.twitter.com/NHMPalaeobotany

Mitchell R (2014) ResearchGate

Sheldon ND, Mitchell RL, Collinson ME, Hooker JJ (2008) Eocene-Oligocene transition paleoclimatic and paleoenvironmental record from the Isle of Wight (UK). GSA special papers - Late Eocene Earth: Hothouse Icehouse, and Impacts, GSA Special papers 01/2009 (452) : 249 - 259. doi: 10.1130/2009.2452(16)​

Teaching and students

Courses taught

Postgraduate: 'The Geological History of Soils (Palaeosols)' - at NERC Soils and Regolith course: from parent rock to critical resource
2/2015.

Impact and outreach

Invited and keynote speaker

The Geological History of Soils (Palaeosols), NERC Soils and Regolith: rock to critical resource (course): 25/2/2015.

Linnean Society of London Palaeobotany Specialist Group - Autumn Meeting 2014,

Micro-CT: a new, non-invasive approach to characterizing primitive soils, 9th European Palaeobotany and Palynology Conference: 26/8/2014.

International Association of Sedimentologists - International Sedimentological Congress conference, 2014, 18/8/2014.

Public Engagement

External activities

Blast from the Past, 9/11/20132013 - 2013.

Internal activities

Science Uncovered 2013, 20/9/2013