Dr Jock Churchman

Dr Jock Churchman
 Position Adjunct Senior Lecturer
 Org Unit School of Agriculture, Food and Wine
 Email jock.churchman@adelaide.edu.au
 Telephone +61 8 8313 7232
 Location Floor/Room 3 08 ,  Prescott (CSIRO) ,   Waite
  • Biography/ Background

    Jock Churchman is Adjunct Senior Lecturer at the University of Adelaide and Adjunct Associate Professor at the University of South Australia. He obtained degrees in Chemistry from Otago University in his native New Zealand. He studied the physical chemistry of halloysite for his PhD, under a fellowship from the New Zealand pottery and ceramics industry, and carried out research for this industry for a short time before beginning a two-year post-doctoral fellowship in soil science at the University of Wisconsin. He has continued working on halloysite all of his career, while pursuing many other research topics on clays. These include: the surface chemistry of clays; effect of clays on soil physical properties; clay-organic complexes in soils; environmental uses of clays, especially bentonites; and  weathering and soil formation. He has published nearly 150 papers and co-edited 4 books, most recently The Soil Underfoot (2014) and Natural Mineral Nanotubes (2015). He has received awards from the New Zealand Society of Soil Science, Soil Science Australia (the Prescott and Taylor Awards), AIPEA (International Association for the Study of Clays) ( a Fellowship), and the Clay Minerals Society (the Bailey Award).

     He was employed in the New Zealand Soil Bureau, DSIR for 16 years and in CSIRO Division of Soils (later Land and Water) for 14 years, and has held visiting fellowships at Reading University (1 year) and the University of Western Australia (6 months). He is a former Editor (now Emeritus) of Applied Clay Science. In 2005, he completed a BA (Hons) in philosophy with a thesis on the philosophical status of Soil Science and has published papers on this topic.

  • Publications

    Books and Special Issues of Journals

    Rankin, P.C., Churchman, G.J. (Eds.) 1981.  Soils with Variable Charge Conference Proceedings, Soil Bureau, Department of Scientific and Industrial Research, Lower Hutt, New Zealand. 111p.

     

     

    Churchman, G.J.; Theng, B.K.G. (Eds.) 2002. Special Issue: Clays Research in Australia and New Zealand. Applied Clay Science 20 – issues 4-5 January 2002.

    Churchman, J.; Hesterberg, D.; Singh, B. 2012 Special Issue: Clays and Soils. Applied Clay Science 64, August 2012.

     Churchman, G.J.; Landa, E.R. (Eds.) 2014. The Soil Underfoot. Infinite possibilities for a finite resource, CRC Press, Boca Raton, Florida, USA, 421 pp.

     Pasbakhsh, P.; Churchman, G.J. (Eds.) 2015. Natural Mineral Nanotubes. Apple Academic Press, Oakville, Canada, 498 pp.

    Churchman, G.J., Pasbakhsh, S. Hillier (Eds.). 2016. Special Issue: Halloysite. Clay Minerals 51, No. 3, June 2016.

     

    Top papers

     

    Churchman, G.J. 2018. Game Changer in Soil Science: Functional role of clay minerals in soil. Journal of Plant Nutrition and Soil Sci. 2018, 181, 99–103.

     

    Singh, M., Sarkar, B., Sarkar, S., Churchman, J., Bolan, N., Mandal, M., Purakayastha, T.J., Beerling, D.J. 2018. Stabilization of soil organic carbon as influenced by clay mineralogy. Advances in Agronomy 148, 33-84.

     

    Marchuk, S.,  J. Churchman, P. Rengasamy 2016. Possible effects of irrigation with wastewater on the clay mineralogy of some Australian clayey soils: laboratory study. Soil Research 54, 857-868.

     

    Churchman, G.J., P. Pasbakhsh, D.J. Lowe, B.K.G. Theng 2016 Unique but diverse: some observations on the formation, structure and morphology of halloysite. Clay Minerals 51, 395-416.

     

    Huang, Yu-Tuan, Lowe, David J., Churchman, G. Jock, Schipper, Louis A., Cursons, Ray, Zhang, Heng, Chen, Tsan-Yao, Cooper, Alan. 2016. DNA adsorption by nanocrystalline allophane spherules and nanoaggregates, and implications for carbon sequestration in Andisols. Applied Clay Science 120, 40–50.

     

    Fraser, M.B., Churchman, G.J., Chittleborough, D.J., Rengasamy, P. 2016.Effect of plant growth on the occurrence and stability of palygorskite, sepiolite and saponite in salt-affected soils on limestone in South Australia. Applied Clay Science 124-125, 183-196.

     

    Hong, H., Cheng, F., Yin, K., Churchman, G.J., Wang, C. 2015.Three-component mixed-layer illite/smectite/kaolinite (I/S/K) minerals in hydromorphic soils, south China. American Mineralogist 100, 1883-1891.

     

    Pasbakhsh, P., Churchman, G.J., Keeling, J.L., 2013. Characterisation of properties of various halloysites relevant to their use as nanotubes and microfibre fillers. Applied Clay Science 74, 47-57.

     

    Churchman, G.J., Lowe, D.J. 2012. Alteration, Formation and Occurrence of Minerals in Soils. In: P.M. Huang, Y. Li and M.E. Sumner (eds.). Handbook of Soil Sciences. Properties and Processes, 2nd edition, CRC Press, Boca Raton, Florida, 20.1-20.72.

     

    Churchman, G.J. 2010. Is the geological concept of clay minerals appropriate for soil science? A literature-based and philosophical analysis. Physics and Chemistry of the Earth 35, 927-940.

     

    Churchman, G.J. 2010. The philosophical status of soil science. Geoderma 157, 214-221.

     

    Churchman, G.J., Pontifex, I.R., McClure, S.G. 2010. Factors affecting the formation and characteristics of halloysites or kaolinites in granitic and tuffaceous saprolites in Hong Kong. Clays and Clay Minerals 58, 220-237.

     

    Churchman, G.J., Foster, R.C., D’Acqui, L.P., Janik, L.J., Skjemstad, J.O., Merry, R.H., Weissmann, D.A. 2010. Effect of land-use history on the potential for carbon sequestration in an Alfisol. Soil & Tillage Research 109, 23-35.

     

    Gates, W.P., Bouazza, A., Churchman, G.J. 2009. Bentonite clay keeps pollutants at bay. Elements 5, 105-110.

     

    Bordallo, Heloisa N., Aldridge, Laurence P., Churchman, G. Jock, Gates, Will P., Telling, Mark T. F., Kiefer, Klaus, Fouquet, Peter, Seydel, Tilo, Kimber, Simon A. J. 2008 Quasi-elastic neutron scattering studies on clay interlayer-space highlighting the effect of the cation in confined water dynamics . Journal of Physical Chemistry C, 112, 13982 – 13991.

     

    Churchman, G.J. 2006. Soil phases: the inorganic solid phase. In: G. Certini and R. Scalenghe (eds.) Soils: Basic Concepts and Future Challenges. Cambridge University Press, 23-44.

     

    Churchman, G.J., Gates, W.P., Theng, B.K.G., Yuan, G. 2006. Clays and clay minerals for pollution control. In: F. Bergaya, B.K.G. Theng and G. Lagaly (eds.) Handbook of Clay Science. Developments in Clay Science 1, Elsevier, Amsterdam, 625-675.

     

    Joussein, E., Petit, S., Churchman, J., Theng, B., Righi, D., Delvaux, B. 2005 Halloysite clay minerals – a review. Clay Minerals 40: 383-426.

     

    Zhu, H.Y., Li, J.-Y., Zhao, J.-C., Churchman, G.J. 2005. Photocatalysts prepared from layered clays and titanium hydrate for degradation of organic pollutants in water. Applied Clay Science 28: 79-88.

     

    Churchman, G.J. 2002. Formation of complexes between bentonite and different cationic polyelectrolytes and their use as sorbents for non-ionic and anionic pollutants. Applied Clay Science 21: 177-189.

     

     

     

    Gates, W.P.; Anderson, J.S.; Raven, M.D.; Churchman, G.J. 2002. Mineralogy of a bentonite from Miles, Queensland, Australia and characterisation of its acid activation products. Applied Clay Science 20: 189-197.

     

    Nelson, P.N., Baldock, J.A., Clarke, P., Oades, J.M., Churchman, G.J. 1999. Dispersed clay and organic matter in soil: their nature and associations. Australian Journal of Soil Research 37: 289-315.

     

    Churchman, G.J., Davy, T.J., Aylmore, L.A.G., Gilkes, R.J., Self, P.G.  1995.  Characteristics of fine pores in some halloysites.  Clay Minerals 30: 89-98.

     

    Churchman, G.J., Weissmann, D.A.  1995.  Separation of sub-micron particles from soils and sediments without mechanical disturbance.  Clays and Clay Minerals  43: 85-91.

     

    Churchman, G.J., Slade, P.G., Self, P.G. & Janik, L.J.  1994. Nature of interstratified kaolin-smectites in some Australian soils.  Australian Journal of Soil Research 32: 805-822.

     

    Churchman, G.J., Skjemstad, J.O. & Oades, J.M. 1993 Influence of clay minerals and organic matter on effects of sodicity on soils.  Australian Journal of Soil Research 31: 779-800.

     

     

    Churchman, G.J. & Burke, C.M. 1991. Properties of subsoils in relation to various measures of surface area and moisture contents.  Journal of Soil Science 42: 463-478.

      

     

    Churchman, G.J. and Gilkes, R.J. 1989. Recognition of intermediates in the possible transformation of halloysite to kaolinite.  Clay Minerals 24, 579-590.

     

     

    Churchman, G.J. & Tate, K.R. 1986.  Aggregation of clay in six New Zealand soil types as measured by disaggregation procedures.  Geoderma 37:  207-220.

     

    Churchman, G.J., Whitton, J.S., Claridge, G.G.C. & Theng, B.K.G. 1984.  Intercalation method using formamide for differentiating halloysite from kaolinite.  Clays and Clay Minerals 32:  241-248.

     

    Churchman, G.J. & Theng, B.K.G. 1984.  Interactions of halloysites with amides:  Mineralogical factors affecting complex formation.  Clay Minerals 19:  161-175.

     

    Churchman, G.J. & Payne, D. 1983.  Mercury intrusion porisimetry of some New Zealand soils in relation to clay mineralogy and texture.  Journal of Soil Science 34:  437-452.

     

    Theng, B.K.G., Russell, M., Churchman, G.J. & Parfitt, R.L. 1982.  Surface properties of allophane, halloysite and imogolite.  Clays and Clay Minerals 30:  143-149.

     

    Churchman, G.J. 1980.  Clay minerals formed from micas and chlorites in some New Zealand soils. Clay Minerals 15:  59-76.

     

    Churchman, G.J. & Jackson, M.L. 1976.  Reaction of montmorillonite with acid aqueous solutions : solute activity control by a secondary phase.  Geochimica et Cosmochimica Acta 40:  1521-1529.

     

    Churchman, G.J. & Carr, R.M. 1975.  The Definition and Nomenclature of Halloysites.  Clays and Clay Minerals 23:  382-388.

     

    Churchman, G.J., Aldridge, L.P. & Carr, R.M. 1972.  The relationship between the hydrated and dehydrated states of an halloysite.  Clays and Clay Minerals 20:  241-246.

     

    Books and Special Issues of Journals

    Rankin, P.C., Churchman, G.J. (Eds.) 1981.  Soils with Variable Charge Conference Proceedings, Soil Bureau, Department of Scientific and Industrial Research, Lower Hutt, New Zealand. 111p.

     

    Churchman, G.J., Fitzpatrick, R.W., Eggleton, R.A. (Eds.). 1995. Clays Controlling the Environment. Proceedings of the 10th International Clay Conference, Adelaide, Australia, July 18-23, 1993. CSIRO Publishing, Melbourne, Australia, 526 pp. 

    Churchman, G.J.; Theng, B.K.G. (Eds.) 2002. Special Issue: Clays Research in Australia and New Zealand. Applied Clay Science 20 – issues 4-5 January 2002.

    Churchman, J.; Hesterberg, D.; Singh, B. 2012 Special Issue: Clays and Soils. Applied Clay Science 64, August 2012.

     Churchman, G.J.; Landa, E.R. (Eds.) 2014. The Soil Underfoot. Infinite possibilities for a finite resource, CRC Press, Boca Raton, Florida, USA, 421 pp.

     Pasbakhsh, P.; Churchman, G.J. (Eds.) 2015. Natural Mineral Nanotubes. Apple Academic Press, Oakville, Canada, 498 pp.

    Churchman, G.J., Pasbakhsh, S. Hillier (Eds.). 2016. Special Issue: Halloysite. Clay Minerals 51, No. 3, June 2016.

     

    Top papers

     

    Churchman, G.J. 2018. Game Changer in Soil Science: Functional role of clay minerals in soil. Journal of Plant Nutrition and Soil Sci. 2018, 181, 99–103.

     

    Singh, M., Sarkar, B., Sarkar, S., Churchman, J., Bolan, N., Mandal, M., Purakayastha, T.J., Beerling, D.J. 2018. Stabilization of soil organic carbon as influenced by clay mineralogy. Advances in Agronomy 148, 33-84.

     

    Marchuk,S,  J. Churchman, P. Rengasamy 2016. Possible effects of irrigation with wastewater on the clay mineralogy of some Australian clayey soils: laboratory study. Soil Research 54, 857-868.

     

    Churchman,G.J., P. Pasbakhsh, D.J. Lowe, B.K.G. Theng 2016 Unique but diverse: some observations on the formation, structure and morphology of halloysite. Clay Minerals 51, 395-416.

     

    Churchman, G.J., P. Pasbakhsh, S. Hillier 2016. The rise and rise of halloysite. Clay Minerals 51, 303-308.

     

    Huang, Yu-Tuan, Lowe, David J., Churchman, G. Jock, Schipper, Louis A., Cursons, Ray, Zhang, Heng, Chen, Tsan-Yao, Cooper, Alan. 2016. DNA adsorption by nanocrystalline allophane spherules and nanoaggregates, and implications for carbon sequestration in Andisols. Applied Clay Science 120, 40–50.

     

    Hong, H., Cheng, F., Yin, K., Churchman, G.J., Wang, C. 2015.Three-component mixed-layer illite/smectite/kaolinite (I/S/K) minerals in hydromorphic soils, south China. American Mineralogist 100, 1883-1891.

     

    Pasbakhsh, P., Churchman, G.J., Keeling, J.L., 2013. Characterisation of properties of various halloysites relevant to their use as nanotubes and microfibre fillers. Applied Clay Science 74, 47-57.

     

    Churchman, G.J., Lowe, D.J. 2012. Alteration, Formation and Occurrence of Minerals in Soils. In: P.M. Huang, Y. Li and M.E. Sumner (eds.). Handbook of Soil Sciences. Properties and Processes, 2nd edition, CRC Press, Boca Raton, Florida, 20.1-20.72.

     

    Churchman, G.J. 2010. Is the geological concept of clay minerals appropriate for soil science? A literature-based and philosophical analysis. Physics and Chemistry of the Earth 35, 927-940.

     

    Churchman, G.J. 2010. The philosophical status of soil science. Geoderma 157, 214-221.

     

    Churchman, G.J., Pontifex, I.R., McClure, S.G. 2010. Factors affecting the formation and characteristics of halloysites or kaolinites in granitic and tuffaceous saprolites in Hong Kong. Clays and Clay Minerals 58, 220-237.

     

    Churchman, G.J., Foster, R.C., D’Acqui, L.P., Janik, L.J., Skjemstad, J.O., Merry, R.H., Weissmann, D.A. 2010. Effect of land-use history on the potential for carbon sequestration in an Alfisol. Soil & Tillage Research 109, 23-35.

     

    Gates, W.P., Bouazza, A., Churchman, G.J. 2009. Bentonite clay keeps pollutants at bay. Elements 5, 105-110.

     

    Bordallo, Heloisa N., Aldridge, Laurence P., Churchman, G. Jock, Gates, Will P., Telling, Mark T. F., Kiefer, Klaus, Fouquet, Peter, Seydel, Tilo, Kimber, Simon A. J. 2008 Quasi-elastic neutron scattering studies on clay interlayer-space highlighting the effect of the cation in confined water dynamics . Journal of Physical Chemistry C, 112, 13982 – 13991.

     

    Churchman, G.J. 2006. Soil phases: the inorganic solid phase. In: G. Certini and R. Scalenghe (eds.) Soils: Basic Concepts and Future Challenges. Cambridge University Press, 23-44.

     

    Churchman, G.J., Gates, W.P., Theng, B.K.G., Yuan, G. 2006. Clays and clay minerals for pollution control. In: F. Bergaya, B.K.G. Theng and G. Lagaly (eds.) Handbook of Clay Science. Developments in Clay Science 1, Elsevier, Amsterdam, 625-675.

     

    Joussein, E., Petit, S., Churchman, J., Theng, B., Righi, D., Delvaux, B. 2005 Halloysite clay minerals – a review. Clay Minerals 40: 383-426.

     

    Zhu, H.Y., Li, J.-Y., Zhao, J.-C., Churchman, G.J. 2005. Photocatalysts prepared from layered clays and titanium hydrate for degradation of organic pollutants in water. Applied Clay Science 28: 79-88.

     

    Churchman, G.J. 2002. Formation of complexes between bentonite and different cationic polyelectrolytes and their use as sorbents for non-ionic and anionic pollutants. Applied Clay Science 21: 177-189.

     

    Churchman, G.J.; Askary, Md.; Peter, P.; Wright, M.; Raven, M.D.; Self, P.G. 2002. Geotechnical properties indicating environmental uses for an unusual Australian bentonite. Applied Clay Science 20: 199-209.

     

     

    Gates, W.P.; Anderson, J.S.; Raven, M.D.; Churchman, G.J. 2002. Mineralogy of a bentonite from Miles, Queensland, Australia and characterisation of its acid activation products. Applied Clay Science 20: 189-197.

     

    Nelson, P.N., Baldock, J.A., Clarke, P., Oades, J.M., Churchman, G.J. 1999. Dispersed clay and organic matter in soil: their nature and associations. Australian Journal of Soil Research 37: 289-315.

     

    Churchman, G.J., Davy, T.J., Aylmore, L.A.G., Gilkes, R.J., Self, P.G.  1995.  Characteristics of fine pores in some halloysites.  Clay Minerals 30: 89-98.

     

    Churchman, G.J., Weissmann, D.A.  1995.  Separation of sub-micron particles from soils and sediments without mechanical disturbance.  Clays and Clay Minerals  43: 85-91.

     

    Churchman, G.J., Slade, P.G., Self, P.G. & Janik, L.J.  1994. Nature of interstratified kaolin-smectites in some Australian soils.  Australian Journal of Soil Research 32: 805-822.

     

    Churchman, G.J., Skjemstad, J.O. & Oades, J.M. 1993 Influence of clay minerals and organic matter on effects of sodicity on soils.  Australian Journal of Soil Research 31: 779-800.

     

    Churchman, G.J. & Burke, C.M. 1991. Properties of subsoils in relation to various measures of surface area and moisture contents.  Journal of Soil Science 42: 463-478.

      

    Churchman, G.J. and Gilkes, R.J. 1989. Recognition of intermediates in the possible transformation of halloysite to kaolinite.  Clay Minerals 24, 579-590.

     

    Churchman, G.J. & Tate, K.R. 1986.  Aggregation of clay in six New Zealand soil types as measured by disaggregation procedures.  Geoderma 37:  207-220.

     

    Churchman, G.J., Whitton, J.S., Claridge, G.G.C. & Theng, B.K.G. 1984.  Intercalation method using formamide for differentiating halloysite from kaolinite.  Clays and Clay Minerals 32:  241-248.

     

    Churchman, G.J. & Theng, B.K.G. 1984.  Interactions of halloysites with amides:  Mineralogical factors affecting complex formation.  Clay Minerals 19:  161-175.

     

    Churchman, G.J. & Payne, D. 1983.  Mercury intrusion porisimetry of some New Zealand soils in relation to clay mineralogy and texture.  Journal of Soil Science 34:  437-452.

     

    Theng, B.K.G., Russell, M., Churchman, G.J. & Parfitt, R.L. 1982.  Surface properties of allophane, halloysite and imogolite.  Clays and Clay Minerals 30:  143-149.

     

    Churchman, G.J. 1980.  Clay minerals formed from micas and chlorites in some New Zealand soils. Clay Minerals 15:  59-76.

     

    Churchman, G.J. & Jackson, M.L. 1976.  Reaction of montmorillonite with acid aqueous solutions : solute activity control by a secondary phase.  Geochimica et Cosmochimica Acta 40:  1521-1529.

     

    Churchman, G.J. & Carr, R.M. 1975.  The Definition and Nomenclature of Halloysites.  Clays and Clay Minerals 23:  382-388.

     

    Churchman, G.J., Aldridge, L.P. & Carr, R.M. 1972.  The relationship between the hydrated and dehydrated states of an halloysite.  Clays and Clay Minerals 20:  241-246.

     

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Entry last updated: Wednesday, 7 Nov 2018

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