Roger L. Nielsen

Professor

EDUCATION

B.S., Geology, University of Arizona , 1976
M.S., Geology, University of Arizona , 1978
Ph.D., Geology, Southern Methodist University , Dallas , Texas , 1983

ACADEMIC POSITIONS

• Graduate Research Assistant, University of Arizona, 1976-1978
• Graduate Research Assistant: Department of Geological Sciences, University of New Mexico, 1978-1979
• Graduate Research Assistant, Department of Geology, Southern Methodist University, 1979-1982
• Assistant Professor, Department of Geology, University of Maryland, 1982-1988
• Research Associate, College of Oceanography , Oregon State University, 1988-1991
• Associate Professor, College of Oceanic and Atmospheric Sciences, Oregon State University, 1991-2000
• Professor, College of Oceanic and Atmospheric Sciences, Oregon State University 2000-
• Professor and Director, Geology Program, Department of Geosciences, Oregon State University 2000-3
• Professor and Chair, Department of Geosciences, Oregon State University 2003-

FIELDS OF SPECIALIZATION

Igneous Petrology
Mineral chemistry and phase equilibria
Microanalysis Techniques

PROFESSIONAL ACTIVITIES

American Geophysical Union
American Microanalysis Society
Mineralogical Society of America

PROFESSIONAL COMMITTEES, COMMISIONS AND BOARDS

• Member - AGU - VGP Education and Outreach Committee - 1997-2000
• Chair - AGU - VGP Education and Outreach Committee -2000-2002
• AGU VGP Student Judging Committee 1998-9 Organized the judging of the student presentations at the AGU national meetings.
• GERM trace element modeling editor - 1997- Charged with compilation and editing trace element partitioning data, references and models and put them in a web compatible form .

PUBLICATIONS
Manuscripts in press or submitted

1. Kohut, E.J., Stern, R.J., Kent, A.J.R., Nielsen, R.L., Bloomer, S.H., and Leybourne, M (submitted) The Origins of High-Mg Lavas in the Mariana Arc: Evidence from Olivine-Hosted Melt Inclusions ( Jour . of Petrol.).
2. Rowe, M. C., Nielsen, R.L., and Kent., A. J. (submitted) Anomalous Fe contents in rehomogenized olivine hosted melt inclusions from oxidized magmas (American Mineralogist).

Reviewed Technical Publications

58 Kohut, E.J. and Nielsen, R.L., 2004, Melt inclusion formation mechanisms and compositional effects in high-An feldspar and high-Fo olivine in anhydrous mafic silicate liquids. Contrib. Mineral. Petrol., 147, 684-704.

57 Kohut, E.J. and Nielsen, R.L., 2003, Low pressure phase equilibria of anhydrous anorthite bearing mafic magmas G-cubed , v. 4 #7, ISSN 1527-2027.

56 Zimmerman, C.E. and Nielsen, R.L., 2003, Effect of Analytical conditions on the measurement of Strontium/Calcium ratios in otoliths of anadromous salmonids using wavelength dispersive electron microprobe analysis. Fisheries Bulletin , 101, 712-718

55 Michael, P.J., McDonough, W.F., Nielsen, R.L., Cornell, W.C., 2002, Depleted Melt Inclusions in Plagioclase: Messages from the Mantle or Mirages from the Magma Chamber ? Chem. Geol. , 183, 43-61.

54 Sours-Page, R., Nielsen, R.L. and Batiza, R., 2002, Parental magma diversity on a fast-spreading ridge: Evidence from olivine and plagioclase-hosted melt inclusions in axial and seamount lavas from the northern East Pacific Rise Chem. Geol. ,, 183, 237-262.

53 Norman , M., Garcia, M., Kamenetsky, D. and Nielsen, R.L., (2002) Melt inclusions in Hawaiian picrites: Melting and source compositions Chem. Geol. ,, 183, 143-168.

52 Petcovic, H.L., Grunder, A.L. and Nielsen, R.L., 2001, Partial melting of tonalite at the margins of a Columbia River Basalt Group dike, Wallowa Mountains, northeastern Oregon. Oregon Geology 63, #3, 71-76.

51 Hilyard , MD , Nielsen, RL, Beard, JS, Patino-Duce, A, Blencoe, J., 2000, Partitioning of REE and HFSE between pargasitic amphibole and natural silicate melt, Geochim. Cosmochim. Acta , 64, 1103-1120.

50 Nielsen, RL and Beard, JS, 2000, Magnetite-melt HFSE partitioning, Chem. Geology , 164, 21-34

49 Nielsen, R.L, Sours-Page, R.E., and Harpp, K., 2000, The role of a Cl-bearing flux in the origin of depleted ocean floor magmas , G-cubed , 1, paper 1999GC000017.

48 Sours-Page, RE, Johnson, KTM, Nielsen, RL and Karsten, J., 1999, The petrogenesis of the diversity of parent magmas in the Endeavour Segment of the Juan de Fuca Ridge. Contrib. Mineral. Petrol. 134, 342-363.

47 Nielsen, RL, Michael, P. and Sours-Page, RE, 1998, Physical and chemical indicators of compromised melt inclusions. Geochim. Cosmochim. Acta , 61, 161-172

46 Nielsen RL, 1998, Trace element partitioning: In: Encyclopedia of Geochemistry , ed. R.W. Fairbridge. Chapman and Hall Publishers.

45 Staudigel, H, Albarede, F, Blicert-Toft, J, Demond, J, McDonough, W, Jacobson, SB, Kelling, R, Langmuir, CH, Nielsen, RL, Plank, T, Rudnick, R, Shaw, HF, Shirey, S, Veizer, J and White, W, 1998, Geochemical Earth Reference Model (GERM): Chem. Geol. 145, 153-161.

44 Johnson, J., Nielsen, R.L., and Fisk, M.R., 1996, Plagioclase-hosted melt inclusions in the Steens Mtn. basalts, Southeastern Oregon , Petrology 4, 267-73.

43 Nielsen RL, Christie DM, Sprtel FM, 1995, Anomalous low Na magmas: Evidence for depleted MORB or analytical artifact? Geochem. Cosmochim. Acta 59, 5023-5026.

42 Nielsen, R.L., Crum, J., Bougouis, R., Forsythe, L.M., Fisk, M.R. and Christie, D.R., 1995, Melt Inclusions in High-An Plagioclase From the Gorda Ridge: An Example of the Local Diversity of MORB Parent Magmas. Contrib. Mineral. Petrol . 122, 34-50.

41 Ariskin, A.A., Barmina, G.S., Ozerov, A.Yu., Nielsen, R.L., 1995, Genesis of high-alumina basalts of Klyuchevskoi Volcano. Petrology 3, 449-472.

40 Duncan , R.A., Fisk, M.R., White, W.M., and Nielsen, R.L., 1994, Tahiti : Geochemical evolution of a French Polynesian Volcano. Jour. Geophys. Res. 99, no. B12, 24341-24357.

39 Forsythe, L.M., Nielsen, R.L., Fisk, M.R., and Gallahan, W.E., 1994, The partitioning of HFSE between pyroxene and natural mafic to intermediate composition silicate liquids at 1 atm to 10 kb. Chem. Geol. 117, 107-126.

38 Hack, P.J., Nielsen, R.L., and Johnston, A.D., 1994, Experimentally determined rare earth element and Y partitioning behavior between clinopyroxene and basaltic liquids at pressures up to 20 Kb. Chem. Geol. 117, 89-106.

37 Nielsen, R.L., Forsythe, L.M., Gallahan, W.E., and Fisk, M.R., 1994, The major element controls on the partitioning of HFSE between magnetite and mafic to intermediate composition natural silicate liquids at 1 atmosphere. Chem. Geol. 117, 167-193.

36 Patino-Douche, M.L., Patino-Douche, A., Mazhar, Q., Nielsen, R.L., 1994, A new set of low concentration standards for Sc, V, Y, La, Ce, Sm, Yb, Lu, Nb, and Ta in silicates. Geostandards , 18, 195-198.

35 Rieman, B.E., Myers, D.L., and Nielsen, R.L., 1994, The use of otolith microchemistry to discriminate O. Nerka of and resident and anadromous origin. Can. J. of Fish. and Aquat. Sci. 51, 68- 77.

34 Ariskin, A.A. and Nielsen, R.L., 1993, COMAGMAT 3.0: A FORTRAN program to model magma differentiation processes Computers and Geoscience s, 19, # 8, 1155-1170.

33 Ariskin, A.A. and Nielsen, R.L., 1993, Application of computer simulation of magmatic processes to the teaching of petrology, Jour. Geol. Ed. , 41, 1-6.

32 Beattie, P., Drake, M.J., Jones, J., Leeman, W., Longhi, J., McKay, G., Nielsen, R, Plame, H., Shaw, D., Takahashi, E. and Watson, B., 1993, Terminology for trace element partitioning. Geochim. Cosmochim. Acta . 57, 1605-1606.

31 Frey, F.A., Walker , N., Stakes, D., Hart, S.R. and Nielsen, R.L., 1993, Geochemical characteristics of basaltic glasses from the AMAR and FAMOUS axial valleys, Mid-Atlantic Ridge (35-37 o N): Petrogenetic implications. EPSL, 115, 117-136

30 Sinton, C.W., Christie, D.M., Nielsen, R.L., Coombs, V.L., and Fisk, M.R., 1993, Near-primary melt inclusions in anorthite phenocrysts from the Galapagos Platform. EPSL , 119, 527-537.

29 Nielsen, R.L., 1992, BIGD.FOR A FORTRAN program to calculate trace element partition coefficients for natural mafic and intermediate composition magmas. Computers and Geosciences , 18 no. 7, 773-788.

28 Gallahan, W. E. and Nielsen, R.L., 1992, Experimental determination of the partitioning of Sc, Y and REE between high-Ca clinopyroxene and natural mafic liquids. Geochim. Cosmochim. Acta , 56, 2387-2404.

27 Nielsen, R.L., Gallahan, W.E., and Newberger, F., 1992, The partitioning of Sc, Y, and the REE between olivine, low-Ca pyroxene, ilmenite, magnetite and natural silicate magmas. Contrib. Mineral Petrol., 110, 488-499.

26 Toole, C. and Nielsen, R.L., 1992, Analytical considerations for testing hypotheses related to otolith microchemistry using the electron microprobe. Fisheries Bulletin , 90, 421-427.

25 Nielsen, R.L. and DeLong, S.E., 1992, A numerical approach to modeling boundary layer fractionation: Application to differentiation in natural open magma systems. Contrib. Mineral. Petrol. , 110, 355-369.

24 Laird, G., Brown, R.R. and Nielsen, R.L., 1991, Some comments on the eutectic solidification of Cr-Ni (-Si - Mn) white cast iron, Materials and Sci. Tech. 7, 631-644

23 Laird, G., Nielsen, R. L. and Macmillan, M. 1991, On the nature of eutectic carbides in Cr-Ni white cast irons. Metallurgical Transactions of America . 22A, 1709-1720

22 Nielsen, R.L., 1990. The theory and application of a model of open magma system processes. Modern Methods of Petrology: Reviews in Mineralogy ed. J. Nicholls and J.K. Russell. v 24, 65-106.

21 Nielsen, R.L. and Gallahan, W.E., 1990. In defense of the two lattice melt model: a comment on Ellison and Hess. Geochim. Cosmochim. Acta., 55, 132-135

20 Nielsen, R. L., 1990. The use of simulated data sets for the evaluation of the sensitivity of Pearce element ratio analysis. in Theory and application of Pearce Element Ratios to geochemical data analysis, eds. Russell and Stanley, 8, 157-178.

19 Defant, M.J. and R.L. Nielsen, 1990. Interpretation of open system petrogenetic processes: Phase equilibria constraints on magma evolution. Geochim Cosmochim. Acta., 54, 87-102.

18 French, B.M. and R.L. Nielsen, 1990. Vredefort Bronzite Granophyre: Chemical evidence relating to its origin. Tectonophysics, 171, #1, 119-138.

17 Nielsen, R.L., E.S. Landis, V.M. Ceci and C. Poston ,1989. The commingling of diverse magma types in the Flagstaff Lake Igneous Complex. Invited paper for Jackson Memorial Volume of Maine Geological Survey Bulletin, Vol. 2, Igneous and Metamorphic Petrology of Maine, 120-145.

16 Nielsen, R.L., 1989. Phase equilibria constraints on liquid lines of descent generated by paired assimilation and fractional crystallization: Trace elements and Sr and Nd isotopes. Jour. Geophys. Res ., 94, B1,787-794.

15 Nielsen, R.L., 1988. A model for the simulation of combined major and trace element liquid lines of descent. Geochim. Cosmochim. Acta , 52:27-38.

14 Nielsen, R.L., 1988. TRACE.FOR: A program for the calculation of combined major and trace element liquid lines of descent for natural magmatic systems. Computers & Geosciences , 14(1):15-35.

13 Nielsen, R.L., P.M. Davidson and T.L. Grove , 1988. Pyroxene-melt Equilibria: An updated model. Contrib. Mineral. Petrol ., 100, 361-373

12 Shirey, S.B. and R.L. Nielsen, 1988. Developments in Petrology, 1987. Geotimes :36-40.

11 Newman, J.R. and R.L. Nielsen, 1987. The X-ray fluorescence characteristics of the rhyodacite sources of the Taos Plateau, New Mexico. Archeometrics , 29:262-274.

10 Nielsen, R.L., A.F. Glazner, D.R. Baker, H. Nekvasil and J.K. Russell, 1987. Developments in phase equilibria models for igneous systems, EOS , 68(9):121-127.

9 Nielsen, R.L. and M.A. Dungan, 1985. The petrology and geochemistry of the Ocate Volcanic Field, North Central New Mexico. Geol. Soc. Amer. Bull ., 96:296-312.

8 Nielsen, R.L., 1985. EQUIL: A program for the modeling of low pressure differentiation processes in natural mafic magma bodies. Computers & Geosciences , 11(5):531-546.

7 Nielsen, R.L., 1985. A method for the elimination of compositional dependence of trace element distribution coefficients. Geochim. Cosmochim. Acta , 49:1775-1779.

6 Newman, J. and R.L. Nielsen, 1985. X-ray sourcing of northern New Mexico obsidians. Jour. Field Arch ., 12:512-520.

5 Nielsen, R.L., 1984. Open system fractionation and magma mixing in the origin of the intermediate composition lavas of the Ocate Volcanic Field, New Mexico. Proceedings of the ISEM Conference on Open Magmatic Systems, Taos , New Mexico , p. 116-120.

4 Nielsen, R.L. and M.A. Dungan, 1983. Low pressure mineral-melt equilibria in natural anhydrous mafic systems. Contrib. Mineral. Petrol ., 84:310-326.

3 Ma, M.S., R.A. Schmitt, R.L. Nielsen, R.D. Taylor, R.D. Warner and K. Keil, 1979. Petro-genesis of Luna 16 aluminous Mare basalts. Geophys. Res. Lett ., 11:909-914.

2 Nielsen, R.L. and M.J. Drake, 1979. Pyroxene-melt Equilibria. Geochim. Cosmochim. Acta , 43:1259-1272.

1 Nielsen, R.L. and M.J. Drake, 1978. The case for at least three Mare basalt magmas at the Luna 24 landing site. Mare Crisium: The View from Luna 24 , p. 419-428, Pergamon Press.

b. Reviewed Proceedings

6 Dungan, M.A., D. Phelps, J.C. Stormer, D.P. Blanchard, R.L. Nielsen, N.J. McMillian and R.A. Thompson, 1981. Late Cenozoic volcanism of the northern New Mexico-southern Colorado portion of the Rio Grande Rift. Proceedings of the LPI Conference on Planetary Rift Processes, Salt Lake City , Utah , p. 137-141.

5 Ma, M.S., R.A. Schmitt, R.L. Nielsen, R.D. Warner, G.J. Taylor and K. Keil, 1979. Luna 16 basalts and breccias: New chemical and petrologic data. Lunar Planet. Sci. X , p. 762-764.

4 Lindstrom, M.M., R.L. Nielsen and M.J. Drake, 1977. Petrology and geochemistry of lithic fragments separated from the Apollo 15 deep drill core. Proceedings of the 8th Lunar Science Conference , p. 2869-2888.

3 Nielsen, R.L. and M.J. Drake, 1978. Pyroxene-melt Equilibria: An update. Lunar Planet. Sci. IX , p. 805-807.

2 Nielsen, R.L. and M.J. Drake, 1977. Pyroxene-melt equilibria, Fe as a trace element and several pyroxene geothermometers. Proceedings of the International Conference on Experimental Trace Element Geochemistry, Sedona, Arizona, 91-94.

1 Nielsen, R.L. and M.J. Drake, 1977. Pyroxene-melt equilibria and a possible pyroxene geothermometer for low alkali basaltic rocks. Lunar Science VIII , p. 732-735

last updated October 11, 2004 by lrv