 Jonathan H. Berg Chair |
Petrology
|
Jonathan H. Berg Chair |
Petrology
|
(A) Origin and evolution of earth's lower crust under the Transantarctic Mountains. Rare samples of the earth's deep crust that are carried to the surface by volcanic eruptions are analyzed for clues as to their origin. (B) Origin and evolution of ocean-island volcanism at the Balleny Islands Hotspot. Lava chemistry is used to characterize and interpret heterogeneity in the underlying mantle.
Origin and evolution of ancient volcanism associated with the Mid-Continent Rift in the Lake Superior region of North America. One of the world's thickest accumulations of basaltic lavas is being studied to determine the composition of the sources in the earth's mantle, the crustal processes that modified the primary magma compositions, and the intricate relationships between these geochemical and tectonic processes that caused North America to nearly rift apart 1,100 million years ago.
Origin of Anorthosite. The chemistry of anorthosite and related rocks in northern coastal Labrador is being studied in an attempt to understand the processes that might have produced this enigmatic igneous rock type that consists predominantly of the mineral plagioclase.
I teach a variety of courses for undergraduate non-majors, undergraduate and graduate students majoring in geology. This table provides a listing of the courses I teach, as well as a copy of the most recent syllabus for each course, and the description of the course that appears in the NIU course catalog.
Course Name |
Syllabus |
Course Info |
| GEOL 120 Introductory Geology | 120 | |
| GEOL 312 Igneous and Metamorphic Petrology | ||
| GEOL 411 Optical Mineralogy | ||
| GEOL 480 Theoretical Petrology | ||
| GEOL 580 Metamorphic Petrology | ||
| GEOL 646A Mineralogy | ||
| GEOL 646B Petrology | ||
| GEOL 647B Isotope Geochemistry |
Berg, J.H., Weis, D., McIntosh, W.C., and Cameron, B.I., 1997. Age and origin of HIMU volcanism in the Balleny Islands: Melting of plume-delivered deep mantle or shallow asthenospheric mantle? 7th V.M. Goldschmidt Conference (in press).
Wysoczanski, R.J., Ireland, T.R., Berg, J.H., and Gamble, J.A., 1997. An oceanic crustal origin for young continental crust along the West Antarctica - Australia sector of the Paleozoic Gondwana seaboard, 7th V.M. Goldschmidt Conference (in press).
Wysoczanski, R.J., Berg, J.H., and Fanning, C.M., 1996. Isotopic resetting of zircon in high temperature granulite facies xenoliths from the Transantarctic Mountains, 13th Australian Geological Convention, Abstracts volume, 41, 485.
Berg, J.H., Weis, D., Cameron, B.I., Eargle, G.A.J., 1996. A comparison of alkali basalts from the "oceanic" Balleny Islands and the "continental" Possession Islands of Antarctica: Implications for lithospheric interaction, Shallow Level Processes in Ocean Island Magmatism: Distinguishing Mantle and Crustal Signatures, AGU Chapman Conference on Shallow Level Processes in Ocean Island Magmatism, Abstracts Volume, p. 14.
Berg, J.H., Weiss, D., and Cameron, B.I., 1995. Enriched HIMU source for the Balleny Island basalts, Southern Ocean, Eos Trans. AGU, 76, 693.
Berg, J.H., Wilson, S.A., Weis, D., and Cameron, B.I., 1995. Petrology and geochemistry of lavas from the Balleny Islands, VII International Symposium on Antarctic Earth Sciences, Abstracts Volume, p. 37.
Berg, J.H., Wysoczanski, R.J., and Fanning, C.M., 1995. Zircon crystallization ages from the lower crust of the Transantarctic Mountains: SHRIMP data from granulite xenoliths at Foster Crater, VII International Symposium on Antarctic Earth Sciences, Abstracts Volume, p. 36.
Shirey, S.B., Klewin, K.W., Berg, J.H. and Carlson, R.W., 1994. Temporal changes in the source of flood basalts: Isotopic and trace element evidence from the 1100 Ma old Keweenawan Mamainse Point Formation, Ontario, Geochim. Cosmochim. Acta, 58, 4475-4490.
Berg, J.H., Emslie, R.F., Hamilton, M.A., Morse, S.A., Ryan, A.B., and Wiebe, R.A., 1994. Anorthositic, granitoid, and related rocks of the Nain Plutonic Suite. International Geological Correlation Programme, Field Excursion Guidebook, IGCP Projects 290 & 315, 69 p.
Berg, J.H., 1993. Jonathon Intrusion, Nain Plutonic Suite, Labrador, IGCP 290 Conference on Parental Anorthosite Magmas and Tectonic and Metamorphic Processes in the Evolution of Anorthosites, Conference Abstracts, p. 5.
Gamble, J.A., Wysoczanski, R.J., Berg, J.H., Kyle, P.R., Thirlwall, M.T., and Menzies, M.A., 1993. The nature of the lithosphere beneath East and West Antarctica based on xenoliths in basalts: An overview, IGCP 304 International Workshop on the Xenolith Window into the Lower Crust, Abstract Volume, p. 11.
Berg J.H. and Wu, B., 1992. Crustal xenoliths from Cape McCormick Crater, northern Victoria Land, In Yoshida, Y., Kaminuma, K. and Shiraishi, K., Eds., Recent Progress in Antarctic Earth Science, TERRAPUB, Tokyo, 265-271.
Wu, B. and Berg, J.H., 1992. Early Paleozoic lamprophyre dikes of southern Victoria Land: Geology, petrology, and geochemistry, In Yoshida, Y., Kaminuma, K. and Shiraishi, K., Eds., Recent Progress in Antarctic Earth Science, TERRAPUB, Tokyo, 257-264.
Klewin, K.W. and Berg, J.H., 1991. Petrology of the Keweenawan Mamainse Point lavas, Ontario: Petrogenesis and continental rift evolution, J. Geophys. Res. 96, 457-474.
Berg, J.H., Bennett, V.C. and McCulloch, M.T., 1991. Lower crustal evolution beneath an early-Paleozoic active continental margin: Nd and Sr isotopic data on crustal xenoliths from the McMurdo region of Antarctica, EOS Trans. AGU, 72, 297.
Berg, J.H., Moscati, R.J. and Herz, D.L., 1989. A petrologic geotherm from a continental rift in Antarctica, Earth Planet. Sci. Letters., 93, 98-108.
Kalamarides, R.I, Berg, J.H. and Hank, R.A., 1987. Lateral isotopic discontinuity in the lower crust: an example from Antarctica, Science, 237, 1192-1195.
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Last revised 11/14/05