Search Results - "Heaman, L. M."

Geochronology and geochemistry of the MAX porphyry Mo deposit and its relationship to Pb-Zn-Ag mineralization, Kootenay Arc, southeastern British Columbia, Canada by Lawley, C. J. M, Richards, Jeremy P, Anderson, R. G, Creaser, R. A, Heaman, L. M

“…The MAX porphyry Mo deposit is located at the northern end of the Kootenay arc in southeastern British Columbia, Canada. Molybdenum mineralization is…”
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Circa 2.3‐Ga Magmatism of the Arrowsmith Orogeny, Uranium City Region, Western Churchill Craton, Canada by Hartlaub, R. P., Heaman, L. M., Chacko, T., Ashton, K. E.

“…The western margin of the Churchill craton records a complex history of Paleoproterozoic tectonism. The most prominent of these tectonic events is recorded…”
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The Mesoproterozoic Zig-Zag Dal basalts and associated intrusions of eastern North Greenland: mantle plume?lithosphere interaction by Upton, B. G. J., R m, O. T., Heaman, L. M., Blichert-Toft, J., Kalsbeek, F., Barry, T. L., Jepsen, H. F.

“…The lavas of the Zig-Zag Dal Formation of eastern North Greenland constitute a Mesoproterozoic tholeiitic flood basalt succession up to 1,350 m thick,…”
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Timing and origin of magmatism in the Sverdrup Basin, Northern Canada—Implications for lithospheric evolution in the High Arctic Large Igneous Province (HALIP) by Dockman, D.M., Pearson, D.G., Heaman, L.M., Gibson, S.A., Sarkar, C.

“…Cretaceous magmatism in the Sverdrup Basin of Arctic Canada is widely considered to be part of the circum-Arctic High Arctic Large Igneous Province (HALIP)…”
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No evidence for Hadean continental crust within Earth’s oldest evolved rock unit by Reimink, J. R., Davies, J. H. F. L., Chacko, T., Stern, R. A., Heaman, L. M., Sarkar, C., Schaltegger, U., Creaser, R. A., Pearson, D. G.

“…Little is known about the character of the Hadean crust. Geochemical analyses of the 4-billion-year-old Acasta Gneiss from Canada suggest Earth’s earliest…”
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Age of the Ballachulish and Glencoe Igneous Complexes (Scottish Highlands), and paragenesis of zircon, monazite and baddeleyite in the Ballachulish Aureole by Fraser, G. L, Pattison, D. R. M, Heaman, L. M

“…U-Pb zircon ages are presented for the Ballachulish Igneous Complex (207Pb-206Pb age 427±1 Ma; 206Pb-238U age 423±0.3 Ma) and Glencoe Volcanic Complex…”
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Filling in the juvenile magmatic gap: Evidence for uninterrupted Paleoproterozoic plate tectonics by Partin, C.A., Bekker, A., Sylvester, P.J., Wodicka, N., Stern, R.A., Chacko, T., Heaman, L.M.

“…Despite several decades of research on growth of the continental crust, it remains unclear whether the production of juvenile continental crust has been…”
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A nitrogen isotope fractionation factor between diamond and its parental fluid derived from detailed SIMS analysis of a gem diamond and theoretical calculations by Petts, D.C., Chacko, T., Stachel, T., Stern, R.A., Heaman, L.M.

“…To determine the magnitude of N-isotope fractionation between diamond and its parental fluid, detailed C- and N-isotope analyses of a complexly-zoned,…”
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Polymetamorphic evolution of the Lewisian complex, NW Scotland, as recorded by U-Pb isotopic compositions of zircon, titanite and rutile by Corfu, F., Heaman, L. M., Rogers, G.

“…U-Pb isotopic relations in zircon and titanite of granulite and amphibolite gneisses in the Lewisian complex and bordering Laxford Front reveal complex…”
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Timing and origin of midcontinent rift alkaline magmatism, North America. evidence from the Coldwell Complex by HEAMAN, L. M, MACHADO, N

“…The Coldwell Complex represents the largest alkaline intrusion associated with the Midcontinent Rift System in North America. A study of the rock types in the…”
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Pan-Continental River System Draining Grenville Orogen Recorded by U-Pb and Sm-Nd Geochronology of Neoproterozoic Quartzarenites and Mudrocks, Northwestern Canada by Rainbird, R. H., McNicoll, V. J., Thériault, R. J., Heaman, L. M., Abbott, J. G., Long, D. G. F., Thorkelson, D. J.

“…Regional lithostratigraphic correlation of early Neoproterozoic Sequence B on the northwest margin of Laurentia includes a 0.5-2 km-thick, laterally…”
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U-Pb baddeleyite ages for the Scourie dyke swarm, Scotland: evidence for two distinct intrusion events by Heaman, L. M, Tarney, J

“…Precambrian dyke swarms, such as the Scourie dyke swarm in north-west Scotland, are invaluable time-markers, so that a precise and accurate knowledge of their…”
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Pre‐Alpine Crust in the Apuseni Mountains, Romania: Insights from Sm‐Nd and U‐Pb Data by Pană, D. I., Heaman, L. M., Creaser, R. A., Erdmer, P.

“…The Apuseni Mountains in Romania expose pre‐Alpine crustal basement rocks between the Carpathian and Dinaride segments of the Alpine Orogen. Because of a lack…”
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Geochronological constraints on the emplacement history of an anorthosite - rapakivi granite suite. U-Pb zircon and baddeleyite study of the Korosten complex, Ukraine by AMELIN, Yu. V, HEAMAN, L. M, VERCHOGLIAD, V. M, SKOBELEV, V. M

“…In a study, an attempt is made to determine precise ages for the main intrusive components of the Korosten anorthosite-rapakivi granite complex…”
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Timing of eastern North American kimberlite magmatism: continental extension of the Great Meteor hotspot track? by Heaman, L.M., Kjarsgaard, B.A.

“…Twenty-nine new high precision U–Pb perovskite ages for kimberlite and other CO 2-rich ultrabasic rocks, primarily from five fields or clusters in eastern…”
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Intracrustal extension of an Archean orogen revealed using single-grain U-Pb zircon geochronology by Moser, D. E., Heaman, L. M., Krogh, T. E., Hanes, J. A.

“…The metaplutonic Wawa gneiss domain in the southern Superior Province is part of an uplifted block that was exhumed during the Proterozoic, exposing the…”
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The timing of kimberlite magmatism in North America: implications for global kimberlite genesis and diamond exploration by Heaman, L.M, Kjarsgaard, B.A, Creaser, R.A

“…Based on a compilation of more than 100 kimberlite age determinations, four broad kimberlite emplacement patterns can be recognized in North America: (1) a…”
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Magmatism of the mid-Proterozoic Gardar Province, South Greenland: chronology, petrogenesis and geological setting by Upton, B.G.J, Emeleus, C.H, Heaman, L.M, Goodenough, K.M, Finch, A.A

“…A lithospherically weak zone embracing the southern margin of the Greenland Archaean craton and the Ketilidian Julianehåb batholith underwent repeated rifting…”
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A 1,800-million-year-old Proterozoic gneiss terrane in Islay with implications for the crustal structure and evolution of Britain by Marcantonio, F, Dickin, A. P, McNutt, R. H, Heaman, L. M

“…A basement gneiss terrane is exposed in the western part of Islay, an island south of Mull in Scotland. The gneiss terrane has been inferred previously to be…”
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The Archean Murmac Bay Group: evidence for a giant Archean rift in the Rae Province, Canada by Hartlaub, R.P, Heaman, L.M, Ashton, K.E, Chacko, T

“…The lower amphibolite to-granulite facies Archean Murmac Bay Group of the southwestern Rae Province, Canada, formed during continental extension (rifting) of…”
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