Laurence Coogan



55. Coogan, L.A., and Dosso, S.E. (2016) Quantifying Parental MORB trace element compositions from the eruptive products of realistic magma chambers: parental EPR MORB are depleted, Journal of Petrology in press (O’Hara memorial volume).

54. Mao, M, Rukhlov, A.S., Rowins, S.M. Spence, J. and Coogan, L.A. (2016) Detrital apatite trace element compositions: a robust new tool for mineral exploration, Economic Geology, 111, 1187-1222.

53. Coogan, L.A. Parrish, R and Roberts, N.M.W., (2016) Early hydrothermal carbon uptake by the upper oceanic crust: Insight from in situ U-Pb dating, Geology, 44, 147-150.


52. Gillis, K.M., Coogan, L.A., and Brant, C., (2015), The role of sedimentation history and lithology on fluid flow and reactions in off-axis hydrothermal systems: A perspective from the Troodos ophiolite, Chemical Geology, 414, 84–94.

51. Faak, K, Coogan, L.A. and Chakrabory, S. (2015) Large decreases in cooling rate with depth in the lower oceanic crust derived by diffusion modeling of Mg in plagioclase, Earth and Planetary Science Letters, 423, 36-47.

50. Coogan, L.A. and O’Hara M.J. (2015) MORB differentiation: in situ crystallization in replenished-tapped magma chambers, Geochimica et Cosmochimica Acta, 158, 147-161.

49. Coogan L.A. and Dosso, S.E. (2015) Alteration of ocean crust provides a strong temperature dependent feedback on the geological carbon cycle and is a primary driver of the Sr-isotopic composition of seawater, Earth and Planetary Science Letters, 415, 38-46.


48. Anderson, B.A., L.A. Coogan and K.M. Gillis, (2014) Fluid seepage velocities through marine sediments constrained by a global compilation of interstitial water SO42-, Mg2+ and Ca2+ profiles, Journal of Geophysical Research, 119, 6823–6840.

47. Moore, A, Coogan, L.A., Costa, F. and Perfit, M.R. (2014) Primitive melt replenishment and crystal-mush disaggregation in the weeks preceding the 2005-06 eruption 9˚50’N, EPR, Earth and Planetary Science Letters, 403, 15-26.

46. Faak, K., Chakrabory, S. and Coogan, L.A. (2014) A new Mg-in-plagioclase geospeedometer for mafic rocks and the extraction of cooling rates, Geochimica et Cosmochimica Acta, 140, 691-707.

45. Coogan, L.A., Saunders, A.D. and Wilson, R.N. (2014) Aluminium-in-olivine thermometry of primitive basalts: evidence of an anomalously hot mantle source for large igneous provinces, Chemical Geology, 368, 1-10.

44. Coogan, L. A. (2014) Chapter 4.14: The lower oceanic crust, 497-541, in Turekian, K., and Holland, H. D., editors, Treatise on Geochemistry, Elsevier.


43. Anderson, B.A., K.M. Gillis, and L.A. Coogan, (2013) Reconciling hydrological models of the oceanic crust with geological constraints from secondary carbonate minerals. Journal of Geophysical Research, 118, 3917-3930.

42. Faak, K., Chakrabory, S. and Coogan, L. A. (2013) Mg in plagioclase: Experimental calibration of a new geothermometer and diffusion coefficients, Geochimica et Cosmochimica Acta, 123, 195-217.

41. Shejwalkar, A. and Coogan, L.A., (2013). Experimental calibration of the roles of temperature and composition in the Ca-in-olivine geothermometer at 0.1 MPa, Lithos 177, 54-60.

40. Coogan, L.A. Gillis, K.M. (2013) Evidence that low-temperature oceanic hydrothermal systems play an important role in the silicate-carbonate weathering cycle and long-term climate regulation, Geochemistry Geophysics Geosystems, 14, 1771–1786.


39. Brant, C., L.A. Coogan, K.M. Gillis, W.E. Seyfried, N.J. Pester, and J. Spence (2012) Lithium and Li-isotopes in young altered upper oceanic crust from the East Pacific Rise, Geochimica et Cosmochimica Acta, 96, 272–293.

38. Anderson, B.A., L.A. Coogan, K.M. Gillis, (2012) The role of outcrop-to-outcrop fluid flow in off-axis, oceanic hydrothermal systems under abyssal sedimentation conditions. Journal of Geophysical Research, doi:10.1029/2011JB009052.

37. Jowitt, S.J. Jenkin, G.R.T., Coogan, L.A. and Naden, J. (2012) Quantifying the release of base metals from source rocks for volcanogenic massive sulfide deposits: effects of protolith composition and alteration mineralogy, Journal of Geochemical Exploration, 118, 47-59.

36. Coogan, L.A. and Dosso, S. (2012) An internally consistent, probabilistic, determination of ridge-axis hydrothermal fluxes, Earth and Planetary Science Letters, 323-4, 92-101.


35. Coogan L. A. (2011) Preliminary experimental determination of the partitioning of lithium between plagioclase of different anorthite content, Lithos, 125, 711-715.

34. Gillis, K.M. and Coogan, L.A., (2011). Secular variation in carbon uptake into the ocean crust. Earth and Planetary Science Letters, 302, 385-392.


33. Hamme, R. C., Webley, P. W., Crawford, W. R., Whitney, F. A., DeGrandpre, M. D., Emerson, S. R., Eriksen, C. C., Giesbrecht, K. E., Gower, J. F. R., Kavanaugh, M. T., Pena-Molino, B., Pena, M. A., Sabine, C. L., Batten, S. D., Coogan, L. A., Grundle, D. S. and Lockwood, D. (2010) Volcanic ash fuels anomalous plankton bloom in subarctic Northeast Pacific. Geophys. Res. Lett., 37, doi:10.1029/2010GL044629.

32. Barker, A. K., Coogan, L.A., Gillis, K.M. (2010) Insights into the behaviour of sulphur in mid-ocean ridge axial hydrothermal systems from the composition of the sheeted dyke complex at Pito Deep, Chemical Geology, 275, 105-115.

31. Barker, A. K., Coogan, L.A., Gillis, K.M., Hayman, N.H. and Weis, D. (2010) Direct observation of a fossil high-temperature, fault-hosted, hydrothermal upflow zone in crust formed at the East Pacific Rise, Geology, 38, 379-382.

30. Dohmen, R., Kasemann, S., Coogan, L.A., and Chakraborty, S. (2010) Diffusion of Li in olivine: I. Experimental observations and a multi species diffusion model. Geochimica et Cosmochimica Acta, 74, 274-292.


29. Costa, F., Coogan, L.A., and Chakraborty, S. (2009) The time scales of magma mixing and mingling involving primitive melts and melt-mush interaction at Mid-ocean ridges: Contributions to Mineral Petrology, 159, 371–387.

28. Coogan, L.A. and Cullen, J. (2009) Did natural fission reactors form as a consequence of the emergence of oxygenic photosynthesis during the Archean? Geological Society of America Today, 19, 4-10

27. Coogan, L.A., (2009) An inorganic fingerprint of changing seawater Sr content, Geochemistry Geophysics Geosystems, 10, doi:10.1029/2008GC002341


26. Barker, A. K., Coogan, L.A., Gillis, K.M. and Weis, D. (2008), Strontium isotope constraints on fluid flow in the sheeted dike complex of fast spreading crust: Pervasive fluid flow at Pito Deep, Geochemistry Geophysics Geosystems, DOI: 10.1029/2007GC001901.

25. Wan, Z., Coogan, L.A. and Canil, D. (2008) Experimental calibration of aluminium partitioning between olivine and spinel as an empirical geothermometer, American Mineralogist, 93, 1143-1147.

24. Coogan, L.A., (2008) Reconciling temperatures of metamorphism, fluid fluxes and heat transport in the upper crust at intermediate- to fast-spreading mid-ocean ridges. Geochemistry Geophysics Geosystems, DOI: 10.1029/2007GC001787.


23. Coogan, L.A., Manning, C.E., Wilson, R.N. and E.I.M.F. (2007) Oxygen isotope evidence for short-lived high-temperature pervasive fluid flow in the lower oceanic crust at fast-spreading ridges, Earth and Planetary Science Letters, 260, 524-536.

22. Coogan, L.A., Jenkin, G.R.T. and Wilson, R.N. (2007) Contrasting cooling rates in the oceanic lithosphere at fast- and slow-spreading mid-ocean ridges derived from geospeedometry, Journal of Petrology, 48, 2211-2231.

21. Perk, N.W., Coogan, L.A., Karson, J.A., Klein, E.M. and Hanna, H. (2007) Primitive high level plutonic rocks from Pito Deep: implications for accretion of the lower crust at the Southern East Pacific Rise, Contributions to Mineral Petrology, 154, 575-590.

20. Coogan, L. A. (2007) The lower oceanic crust, in Turekian, K., and Holland, H. D., editors, Treatise on Geochemistry, Elsevier.


19. Coogan, L.A., Howard, K.A., Gillis, K.M., Bickle, M.J., Chapman, H.J., Boyce, A.J., Jenkin, G. R. T. and Wilson, R. N. (2006) Chemical and thermal constraints on focused fluid flow in the lower oceanic crust, American Journal of Science, 306, 389-427.

18. Mackenzie, G.D. Maguire, P.K.H., Coogan, L.A. Khan, M.A., Eaton, M. and Petrides, G. (2006) Geophysical constraints on the crustal architecture of the Troodos Ophiolite: results of the IANGASS project. Geophysical Journal International, 167(3) 1385-1401.

17. Coogan, L.A. and Hinton, R.H. (2006) Do the trace element compositions of detrital zircons require Hadean continental crust? Geology, 34(8) 633-636.


16. Coogan, L.A., Kasemann, S. and Chakraborty, S. (2005) Rates of hydrothermal cooling of new oceanic upper crust derived from Li-geospeedometry, Earth and Planetary Science Letters, 240, 415-424.

15. Coogan, L.A., Hain, A., Stahl, S. and Chakraborty, S. (2005) Experimental determination of the diffusion coefficient for calcium in olivine between 900°C and 1500°C, Geochimica et Cosmochimica Acta, 69, 3683-3694.

14. Gillis K.M., Coogan L.A. and Pedersen R.B. (2005) Strontium isotope constraints on fluid flow in the upper oceanic crust at the East Pacific Rise. Earth and Planetary Science Letters, 232, 83-94.


13. Coogan, L.A., Thompson, G.M., MacLeod, C.J., Dick, H.J.B., Edwards, S.J., Hosford, A. and Barry, T.L. (2004) A combined basalt and peridotite perspective on 14 Myr of melt generation at the Atlantis Bank segment of the Southwest Indian Ridge: evidence for temporal changes in mantle dynamics? Chemical Geology, 207, 13-30.


12. Coogan, L.A., (2003) Contamination of the lower oceanic crust in the Oman ophiolite Geology, 31, 1065-1068.

11. Gillis K.M., Coogan, L.A. and Chaussidon, M. (2003) Volatile behavior in the roof of an axial magma chamber from the East Pacific Rise. Earth and Planetary Science Letters, 213, 447-462.

10. Coogan, L.A., Mitchell, N.C. and O'Hara, M.J. (2003) Roof assimilation at fast-spreading ridges: an investigation combining geophysical, geochemical and field evidence. Journal of Geophysical Research, 108, DOI 10.1029/2001JB001171.


9. Coogan, L.A., Jenkin, G.R.T. and Wilson R.N. (2002) Constraining the cooling rate of the lower oceanic crust: a new approach applied to the Oman ophiolite. Earth and Planetary Science Letters, 199, 127-146.

8. Gillis, K.M. and Coogan, L.A. (2002) Anatectic migmatites from the roof of an ocean ridge magma chamber. Journal of Petrology, 43, 2075-2095.

7. Coogan, L.A., Gillis, K.M., MacLeod, C.J. Thompson, G. and Hékinian, R. (2002) Petrology and geochemistry of the lower ocean crust formed at the East Pacific Rise and exposed at Hess Deep: a synthesis and new results. Geochemistry  Geophysics  Geosystems, DOI 10.1029/2001GC000230.

6. Coogan, L.A., Banks, G.J., Gillis, K.M., MacLeod, C.J. and Pearce, J.A. (2002) Hidden melting signatures recorded in the Troodos ophiolite plutonic suite: evidence for widespread generation of depleted melts and intra-crustal melt aggregation. Contributions to Mineralogy and  Petrology, 144, 484-505.

5. Coogan, L.A., Thompson, G. and MacLeod, C.J. (2002) A textural and geochemical investigation of high level gabbros from the Oman ophiolite: implications for the role of the axial magma chamber at fast spreading ridges, Lithos, 63, 67-82.


4. Coogan, L.A., Wilson, R.N., Gillis, K.M., and MacLeod, C.J. (2001) Near-solidus evolution of oceanic gabbros: insights from amphibole geochemistry, Geochimica et Cosmochimica Acta, 65, 4339-4357.

3. Coogan, L.A., MacLeod, C.J., Dick, H.J.B., Edwards, S.J., Kvassnes, A., Natland, J.H., Robinson, P.T., Thompson, G. and O’Hara, M.J. (2001) Whole-rock geochemistry of gabbros from the Southwest Indian Ridge: constraints on geochemical fractionations between the upper and lower oceanic crust and magma chamber processes at (very) slow-spreading ridges, Chemical Geology 178, 1-22.


2. Coogan, L.A., Kempton, P.D., Saunders, A.D. and Norry, M.J. (2000) Melt aggregation within the crust beneath the Mid-Atlantic Ridge: evidence from plagioclase and clinopyroxene major and trace element compositions, Earth and Planetary Science Letters, 176, 245-257.

1. Coogan, L.A., Saunders, A.D., Kempton, P.D. and Norry, M.J. (2000) Textural and major, minor and trace element evidence for porous melt migration through a gabbroic crystal mush beneath the Mid-Atlantic Ridge, Geochemistry Geophysics  Geosystems, 1 Paper 2000GC000072.


Publication list (last up-dated 2016)