Stephen Johnston

Publications

English, J., and Johnston S.T., 2005. Collisional orogenesis in the northern Canadian Cordillera: Implications for Cordilleran crustal structure, ophiolite emplacement, continental growth and the terrane hypothesis. Earth and Planetary Science Letters, in press.

Gladwin, K., & Johnston, S.T., 2005. Mid-Cretaceous pinning of accreted terranes to miogeoclinal assemblages in the northern Cordillera: Irreconcilable with Paleomagnetic data? In Haggert, J., Enkin, R., editors; Cordilleran Paleogeography. GAC Special Paper, in press.

English, J., Johnston, S.T., et al., 2005. Stratigraphy and structure of the central Whitehorse Trough: Fold and thrust belt formation in the northern Canadian Cordillera. Bulletin of the Canadian Society of Petroleum Geology,in press.

Enkin, R., Johnston, S.T., Baker, J., and Larson, K., 2005. Paleomagnetism of the Solitary Mountain Volcanics, Late Cretaceous Carmacks Group, Yukon: Implications for Cordilleran paleogeography. In Haggert, J., Enkin, R., eds.; Cordilleran Paleogeography. GAC Special Paper, in press.

Gladwin, K., Colpron, M., Johnston, S.T., and Mortensen, J.K., 2005. The Tummel Fault Zone: A Permian to Triassic structure juxtaposing Yukon-Tanana and Cassiar terranes, Northern Cordillera. Canadian Journal of Earth Sciences, in press.

MacKenzie, J.M., Canil, D., Johnston, S.T., et al., 2005. First evidence for ultrahigh-pressure garnet peridotite in the North American Cordillera. Geology, 33, 105-108.

Wulf, G., Johnston, S.T., and Thomas, R.J.,2005. Remagnetization of Mesoproterozoic rocks from the Natal sector of the Namaqua-Natal belt, South Africa. Journal of African Earth Sciences 40, 137-145.

Johnston, S.T., 2004. The d’Entrecasteaux orocline and rotation of the Vanuatu-New Hebrides arc: An Oroclinal Orgy and analogue for Archean Craton Formation. In Weil, A.B., and Sussman, A., editors; Curved Orogens. Geological Society of America, Denver, Special Paper 383, 225-236.

English, J., & Johnston, S.T., 2004. Intracontinental deformation belts of the Laramide: What are the driving forces? International Geology Review, 46, 833-836.

Lewis, J., Eby, M., Weaver, A., and Johnston, S.T., 2004. Global glaciation in the Proterozoic: Reconciling previous modeling results. Geophysical Research Letters, 31, L08201, doi:10.1029/2004GL019725.

Johnston, S.T., and Acton, S., 2003. The Eocene Southern Vancouver Island Orocline – a response to seamount accretion and the cause of basin and fold and thrust belt formation. Tectonophysics Special Issue – Modern and Ancient Orogenic belts, 365, 196-183.

English, J., Johnston, S.T., and Wang, K., 2003. Thermal modeling of the Laramide orogeny: Testing the flat slab subduction hypothesis. Earth and Planetary Science Letters, 214, 619-632 .

Lewis, J., Weaver, A., Johnston, S.T., and Eby, M., 2003. The Neoproterozoic ‘Snowball Earth’: Dynamic Sea Ice over a quiescent ocean. PaleoOceanography, 18, Art. No. 1092.

Canil, D., Johnston, S.T., et al., 2003. Mantle Exhumation in an Early Paleozoic Passive Margin, Northern Cordillera, Yukon. Journal of Geology, 111, 313-327.

Murphy, B., Hynes, A.J., Johnston, S.T., and Keppie, J.D., 2003. The missing record of subduction in ancient orogens: Consideration of modern analogues. Tectonophysics Special Issue – Modern and Ancient Orogenic belts, 365, 185-194.

Johnston, S.T., McCourt, S., Mitchell, A.A., and Bisnath, A., 2003. The Tugela terrane, Natal Tectonic belt: Kibaran magmatism and tectonism along the southeast margin of the Kaapvaal Craton. South African Journal of Geology, 106, 85-97.

Johnston, S.T., 2001. The Great Alaskan Terrane Wreck: Oroclinal Orogeny and reconciliation of paleomagnetic and geological data in the northern Cordillera. Earth & Planetary Science Letters 193, 259-272.

Johnston, S.T., Armstrong, R., Heaman, L., McCourt, S., Mitchell, A.A., Bisnath, A., and Arima, M., 2001. Preliminary U-Pb geochronology (SHRIMP and TIMS) of the Tugela terrane, Natal Belt, eastern South Africa. Polar Research 55, 40-58.

Arima, M., Tani, K., Kawate, S., and Johnston, S.T., 2001. Tectonic Evolution of the Tugela terrane, Natal Metamorphic Province, South Africa. Polar Research 55, 1-39.

Arima, M., and Johnston, S.T., 2001. Crustal Evolution of the Tugela terrane, Natal Belt, South Africa. Gondwana Research, 4, 563-564.

Mezger, J., Creaser, R., Erdmer, P., and Johnston, S.T., 2001. Cretaceous backarc basin along the Coast Belt of the northern Canadian Cordillera: evidence from geochemical and Neodymium isotope signatures of the Kluane metamorphic assemblage, SW Yukon. Canadian Journal of Earth Sciences 38, 91 - 103.

Johnston, S.T., 2000. The Cape Fold Belt and Syntaxis, and the rotated Falkland Islands: Dextral transpressional tectonics along the southwest margin of Gondwana. Journal of African Earth Sciences 31, 51-63.

Johnston, S.T., and Thorkelson, D.J., 2000. Continental flood basalts: episodic magmatism above long-lived hotspots. Earth & Planetary Letters 175, 247-256.

Johnston, S.T., 1999. Large scale, orogen-parallel displacement in the Cordillera: A granitic resolution to a paleomagnetic dilemma. Journal of Structural Geology 21, 1103-1108.

Johnston, S.T., Mihalynuk, M.G., Brew, D.A., Hart, C.J.R., Erdmer, P., and Gehrels, G., 1999, Discussion: Paleozoic and Mesozoic rocks of Stikinia exposed in northwestern British Columbia: Implications for correlations in the northern Cordillera. Geological Society of America Bulletin, Geological Society of America Bulletin 111, 1103-1106.

Johnston, S.T., 1999. Squeezing down-plunge projections out of graphics packages. Computers & Geoscience 25, 197 - 200.

Wynne, P.J., Enkin, R.J., Baker, J., Johnston, S.T., & Hart, C.J.R., 1998. The Big Flush - Paleomagnetic signature of a 70 Ma regional hydrothermal event in displaced rocks of the northern Canadian Cordillera. Canadian Journal of Earth Sciences 35, 657-671.

Johnston, S.T., and Thorkelson, D.J., 1997. Cocos - Nazca slab window beneath Central America. Earth and Planetary Science Letters 146, 465-474.

Johnston, S. T, Wynne, P.J., Francis, D., Enkin, R. J., Hart, C. J. R., and Engebretson, D. C., 1996. Yellowstone in Yukon: The Late Cretaceous Carmacks Group. Geology 24, 997 - 1000.

Johnston, S. T, Mortensen, J. K., and Erdmer, P., 1996. Igneous and metaigneous age constraints on the Aishihik metamorphic suite, southwest Yukon. Canadian Journal of Earth Sciences 33, 1543 - 1555.

McMillan, W.J., Thompson, J.F.H., Hart, C.J.R., and Johnston, S.T., 1996. Porphry Deposits of the Canadian Cordillera. Geoscience Canada 23, 125 - 134.

Johnston, S. T., and Erdmer, P., 1995. Reply on “Hot-side-up aureole in southwest Yukon and limits on terrane assembly of the northern Canadian Cordillera”. Geology 23, 1152.

McMillan, W.J., Thompson, J.F.H., Hart, C.J.R., and Johnston, S.T., 1995. Regional Geological and tectonic setting of porphyry deposits in British Columbia and Yukon Territory in Schroeter, T., ed., Porphyry Deposits of the northwestern Cordillera of North America: Canadian Institute of Mining, Special Volume 46.

Johnston, S.T. and Erdmer, P., 1995, Magmatic flow and emplacement foliations in the Early Jurassic Aishihik Batholith, southwest Yukon: Implications for northern Stikinia in Miller, D.M., and Busby, C., editors, Jurassic Magmatism and Tectonics of the North American Cordillera: Geological Society of America, Special Paper 299, 65-82.

Johnston, S.T. and Erdmer, P., 1995, A hot-side-up aureole in SW Yukon and limits on terrane assembly of the northern Canadian Cordillera: Geology 23, 419-422.

Hart, C.J.R., Johnston, S.T., Francis, D., Smuk, K., Wynne, J., and Enkin R., 1998. Yellowstone in Yukon – a hotspot link to Late Cretaceous alkalic-associated Cu and Au mineralization. In: Cordillera Revisited: Recent developments in Cordilleran Geology, tectonics and mineral deposits, Mustard, P. and Gareau, S., Eds., Geological Association of Canada, Vancouver, BC, 110-117.

Johnston, S.T., Hart, C.J.R., and Mihalynuk, M.G., 1994, The Northern Intermontane Superterrane - a NUNA conference summary: Geoscience Canada 21, 27-30.

Lowe, C., Horner, R.B., Mortensen, J.K., Johnston, S.T. and Roots, C.F., 1994, New geophysical data from southern Yukon and Northwest Territories: Preliminary interpretations and implications for the tectonics and deep geology of the northern Canadian Cordillera: Canadian Journal of Earth Sciences 31, 891-904.

Charlesworth, H.A.K., Johnston, S.T. and Gagnon, L., 1987, Evolution of the triangle zone in the Rocky Mountain Foothills near Coalspur, central Alberta: Canadian Journal Earth Sciences 24, 1668 -1678.

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SEOS COURSES PEOPLE Faculty Staff Grads Postdoc & Research Associates Adjuncts UNDERGRADUATE PROGRAM GRADUATE PROGRAM RESEARCH ALUMNI		Stephen Johnston Publications English, J., and Johnston S.T., 2005. Collisional orogenesis in the northern Canadian Cordillera: Implications for Cordilleran crustal structure, ophiolite emplacement, continental growth and the terrane hypothesis. Earth and Planetary Science Letters, in press. Gladwin, K., & Johnston, S.T., 2005. Mid-Cretaceous pinning of accreted terranes to miogeoclinal assemblages in the northern Cordillera: Irreconcilable with Paleomagnetic data? In Haggert, J., Enkin, R., editors; Cordilleran Paleogeography. GAC Special Paper, in press. English, J., Johnston, S.T., et al., 2005. Stratigraphy and structure of the central Whitehorse Trough: Fold and thrust belt formation in the northern Canadian Cordillera. Bulletin of the Canadian Society of Petroleum Geology,in press. Enkin, R., Johnston, S.T., Baker, J., and Larson, K., 2005. Paleomagnetism of the Solitary Mountain Volcanics, Late Cretaceous Carmacks Group, Yukon: Implications for Cordilleran paleogeography. In Haggert, J., Enkin, R., eds.; Cordilleran Paleogeography. GAC Special Paper, in press. Gladwin, K., Colpron, M., Johnston, S.T., and Mortensen, J.K., 2005. The Tummel Fault Zone: A Permian to Triassic structure juxtaposing Yukon-Tanana and Cassiar terranes, Northern Cordillera. Canadian Journal of Earth Sciences, in press. MacKenzie, J.M., Canil, D., Johnston, S.T., et al., 2005. First evidence for ultrahigh-pressure garnet peridotite in the North American Cordillera. Geology, 33, 105-108. Wulf, G., Johnston, S.T., and Thomas, R.J.,2005. Remagnetization of Mesoproterozoic rocks from the Natal sector of the Namaqua-Natal belt, South Africa. Journal of African Earth Sciences 40, 137-145. Johnston, S.T., 2004. The d’Entrecasteaux orocline and rotation of the Vanuatu-New Hebrides arc: An Oroclinal Orgy and analogue for Archean Craton Formation. In Weil, A.B., and Sussman, A., editors; Curved Orogens. Geological Society of America, Denver, Special Paper 383, 225-236. English, J., & Johnston, S.T., 2004. Intracontinental deformation belts of the Laramide: What are the driving forces? International Geology Review, 46, 833-836. Lewis, J., Eby, M., Weaver, A., and Johnston, S.T., 2004. Global glaciation in the Proterozoic: Reconciling previous modeling results. Geophysical Research Letters, 31, L08201, doi:10.1029/2004GL019725. Johnston, S.T., and Acton, S., 2003. The Eocene Southern Vancouver Island Orocline – a response to seamount accretion and the cause of basin and fold and thrust belt formation. Tectonophysics Special Issue – Modern and Ancient Orogenic belts, 365, 196-183. English, J., Johnston, S.T., and Wang, K., 2003. Thermal modeling of the Laramide orogeny: Testing the flat slab subduction hypothesis. Earth and Planetary Science Letters, 214, 619-632 . Lewis, J., Weaver, A., Johnston, S.T., and Eby, M., 2003. The Neoproterozoic ‘Snowball Earth’: Dynamic Sea Ice over a quiescent ocean. PaleoOceanography, 18, Art. No. 1092. Canil, D., Johnston, S.T., et al., 2003. Mantle Exhumation in an Early Paleozoic Passive Margin, Northern Cordillera, Yukon. Journal of Geology, 111, 313-327. Murphy, B., Hynes, A.J., Johnston, S.T., and Keppie, J.D., 2003. The missing record of subduction in ancient orogens: Consideration of modern analogues. Tectonophysics Special Issue – Modern and Ancient Orogenic belts, 365, 185-194. Johnston, S.T., McCourt, S., Mitchell, A.A., and Bisnath, A., 2003. The Tugela terrane, Natal Tectonic belt: Kibaran magmatism and tectonism along the southeast margin of the Kaapvaal Craton. South African Journal of Geology, 106, 85-97. Johnston, S.T., 2001. The Great Alaskan Terrane Wreck: Oroclinal Orogeny and reconciliation of paleomagnetic and geological data in the northern Cordillera. Earth & Planetary Science Letters 193, 259-272. Johnston, S.T., Armstrong, R., Heaman, L., McCourt, S., Mitchell, A.A., Bisnath, A., and Arima, M., 2001. Preliminary U-Pb geochronology (SHRIMP and TIMS) of the Tugela terrane, Natal Belt, eastern South Africa. Polar Research 55, 40-58. Arima, M., Tani, K., Kawate, S., and Johnston, S.T., 2001. Tectonic Evolution of the Tugela terrane, Natal Metamorphic Province, South Africa. Polar Research 55, 1-39. Arima, M., and Johnston, S.T., 2001. Crustal Evolution of the Tugela terrane, Natal Belt, South Africa. Gondwana Research, 4, 563-564. Mezger, J., Creaser, R., Erdmer, P., and Johnston, S.T., 2001. Cretaceous backarc basin along the Coast Belt of the northern Canadian Cordillera: evidence from geochemical and Neodymium isotope signatures of the Kluane metamorphic assemblage, SW Yukon. Canadian Journal of Earth Sciences 38, 91 - 103. Johnston, S.T., 2000. The Cape Fold Belt and Syntaxis, and the rotated Falkland Islands: Dextral transpressional tectonics along the southwest margin of Gondwana. Journal of African Earth Sciences 31, 51-63. Johnston, S.T., and Thorkelson, D.J., 2000. Continental flood basalts: episodic magmatism above long-lived hotspots. Earth & Planetary Letters 175, 247-256. Johnston, S.T., 1999. Large scale, orogen-parallel displacement in the Cordillera: A granitic resolution to a paleomagnetic dilemma. Journal of Structural Geology 21, 1103-1108. Johnston, S.T., Mihalynuk, M.G., Brew, D.A., Hart, C.J.R., Erdmer, P., and Gehrels, G., 1999, Discussion: Paleozoic and Mesozoic rocks of Stikinia exposed in northwestern British Columbia: Implications for correlations in the northern Cordillera. Geological Society of America Bulletin, Geological Society of America Bulletin 111, 1103-1106. Johnston, S.T., 1999. Squeezing down-plunge projections out of graphics packages. Computers & Geoscience 25, 197 - 200. Wynne, P.J., Enkin, R.J., Baker, J., Johnston, S.T., & Hart, C.J.R., 1998. The Big Flush - Paleomagnetic signature of a 70 Ma regional hydrothermal event in displaced rocks of the northern Canadian Cordillera. Canadian Journal of Earth Sciences 35, 657-671. Johnston, S.T., and Thorkelson, D.J., 1997. Cocos - Nazca slab window beneath Central America. Earth and Planetary Science Letters 146, 465-474. Johnston, S. T, Wynne, P.J., Francis, D., Enkin, R. J., Hart, C. J. R., and Engebretson, D. C., 1996. Yellowstone in Yukon: The Late Cretaceous Carmacks Group. Geology 24, 997 - 1000. Johnston, S. T, Mortensen, J. K., and Erdmer, P., 1996. Igneous and metaigneous age constraints on the Aishihik metamorphic suite, southwest Yukon. Canadian Journal of Earth Sciences 33, 1543 - 1555. McMillan, W.J., Thompson, J.F.H., Hart, C.J.R., and Johnston, S.T., 1996. Porphry Deposits of the Canadian Cordillera. Geoscience Canada 23, 125 - 134. Johnston, S. T., and Erdmer, P., 1995. Reply on “Hot-side-up aureole in southwest Yukon and limits on terrane assembly of the northern Canadian Cordillera”. Geology 23, 1152. McMillan, W.J., Thompson, J.F.H., Hart, C.J.R., and Johnston, S.T., 1995. Regional Geological and tectonic setting of porphyry deposits in British Columbia and Yukon Territory in Schroeter, T., ed., Porphyry Deposits of the northwestern Cordillera of North America: Canadian Institute of Mining, Special Volume 46. Johnston, S.T. and Erdmer, P., 1995, Magmatic flow and emplacement foliations in the Early Jurassic Aishihik Batholith, southwest Yukon: Implications for northern Stikinia in Miller, D.M., and Busby, C., editors, Jurassic Magmatism and Tectonics of the North American Cordillera: Geological Society of America, Special Paper 299, 65-82. Johnston, S.T. and Erdmer, P., 1995, A hot-side-up aureole in SW Yukon and limits on terrane assembly of the northern Canadian Cordillera: Geology 23, 419-422. Hart, C.J.R., Johnston, S.T., Francis, D., Smuk, K., Wynne, J., and Enkin R., 1998. Yellowstone in Yukon – a hotspot link to Late Cretaceous alkalic-associated Cu and Au mineralization. In: Cordillera Revisited: Recent developments in Cordilleran Geology, tectonics and mineral deposits, Mustard, P. and Gareau, S., Eds., Geological Association of Canada, Vancouver, BC, 110-117. Johnston, S.T., Hart, C.J.R., and Mihalynuk, M.G., 1994, The Northern Intermontane Superterrane - a NUNA conference summary: Geoscience Canada 21, 27-30. Lowe, C., Horner, R.B., Mortensen, J.K., Johnston, S.T. and Roots, C.F., 1994, New geophysical data from southern Yukon and Northwest Territories: Preliminary interpretations and implications for the tectonics and deep geology of the northern Canadian Cordillera: Canadian Journal of Earth Sciences 31, 891-904. Charlesworth, H.A.K., Johnston, S.T. and Gagnon, L., 1987, Evolution of the triangle zone in the Rocky Mountain Foothills near Coalspur, central Alberta: Canadian Journal Earth Sciences 24, 1668 -1678. Back to Navigation Top