Contact Us
Department of Geology
Bryn Mawr College
101 North Merion Avenue
Bryn Mawr, PA 19010
Phone: (610) 526-7392
Fax: (610) 526-5086

Lynne Elkins

 
Elkins

Lecturer and Lab Coordinator

Contact Information:

Bryn Mawr College

Department of Geology

Bryn Mawr, PA 19010

Office Location: 193 Park Science Building

Phone: (610) 526-7971

Fax: (610) 526-5086

email: lelkins (at) brynmawr.edu

Fields of Study:

Igneous geochemistry
Mantle chemical structure and evolution
Uranium series isotopes Igneous geochemistry
Volcanology and volcanic hazards

Research Interests:

I am interested in magmatic processes (including melt generation and transport), mantle-crust interactions and dynamics, the generation of new crust by igneous emplacement, and the long-term chemical evolution of the silicate Earth. To examine these problems, I use a variety of tools, including major element chemistry, trace element chemistry, and variations in long- and short-lived radiogenic isotopes. With these tools I aim to study the means by which melts form in the planet's interior, how those melts are transported, and why they vary from place to place on the Earth's surface. Much of my work has focused on the chemistry and isotopes of volcanic materials erupted at slow-spreading mid-ocean ridges, where new crust is being formed. The processes by which lavas reach the mid-ocean ridges are complex, requiring imperfect mixing of magmas from different depths and a combination of equilibrium and disequilibrium processes during magma transport. My research interests further include the initiation of divergent boundaries at continental rift zones, the relationships between hotspot volcanism and magmatic activity at divergent boundaries, and the morphology and nature of volcanism and crustal production in these very dynamic rifting and ridge environments.

 

Selected Publications:

Elkins, L.J., Sims, K.W.W., Prytulak, J., Blichert-Toft, J., Blusztajn, J., Fretzdorff, S., Reagan, M., Haase, K., Elliott, T., Humphris, S., Schilling, J.-G., 2014, Melt generation beneath Arctic Ridges: Implications from measurements of U decay series disequilibria in the Mohns, Knipovich, and Gakkel Ridges. Geochim. Cosmochim. Acta 127, 140-170.

Elkins, L.J., Sims, K.W.W., Prytulak, J., Elliott, T., Mattielli, N., Blichert-Toft, J., Blusztajn, J., Dunbar, N., Devey, C., Mertz, D., Schilling, J.-G., Murrell, M., 2011, Understanding melt generation beneath the slow-spreading Kolbeinsey Ridge using 238U, 230Th, and 231Pa excesses, Geochim. Cosmochim. Acta 75, 6300-6329.

Elkins, L.J., Gaetani, G.A., Sims., K.W.W., 2008, Partitioning of U and Th during garnet pyroxenite partial melting: Constraints on the source of alkaline ocean island basalts, Earth Planet. Sci. Lett., 265, 270-286.

 

Selected Presentations:

(Presenter*, Undergraduate Student)

Rivers, E.R.*, Elkins, L.J., Sims, K.W.W., Blichert-Toft, J., Devey, C., Chernow, R., Davis, R., Meisenhelder, K., 2013, U-series constraints on magmatism near Jan Mayen, EOS Trans. AGU, Fall Meeting Suppl.

Elkins, L.J.*, Rivers, E.R., Sims, K.W.W., Blichert-Toft, J., Devey, C., Chernow, R., Davis, R., Meisenhelder, K., 2013, Origins of anomalous ridge magmatism near Jan Mayen, Geochim. Cosmochim. Acta Goldschmidt Suppl.

Davis, R.*, Elkins, L.J., Augustin, N., Yeo, I., Meisenhelder, K., Rivers, E., van der Zwan, F., Devey, C., Sims, K.W.W., 2013, Explaining anomalously high magma flux at volcanic centers on the Northern Kolbeinsey and Southern Mohns Ridges using bathymetry and basalt geochemistry, NE GSA Abstracts with Programs, v. 45, 58.

Meisenhelder, K.*, Elkins, L.J., Augustin, N., Yeo, I., Rivers, E., van der Zwan, F., Devey, C., Sims, K.W.W., 2013, Constraining crust formation at slow-spreading ridges using the composition and morphology of Mt. Eggvin, NE GSA Abstracts with Programs v. 45, 58.

Yeo, I.A.*, Augustin, N., Devey, C.W., Deutschmann, M., Elkins, L.J., Laurila, T., Meisenhelder, K., Rivers, E., Rothenbeck, M., van der Zwan, F.M., 2012, The Northern Kolbeinsey Ridge, North Atlantic: Excess volcanism and ridge relocations close to Jan Mayen, EOS Trans. AGU, Fall Meeting Suppl.

Elkins, L.J.*, Sims, K.W.W., 2011, Modeling non-linear variations in melt productivity in mantle melt regimes, EOS Trans. AGU, Fall Meeting Suppl., V32B-03.

Elkins, L.J.*, Sims, K.W.W., J. Prytulak3, N. Mattielli4, T. Elliott5, N. Dunbar6, J. Blichert-Toft7, C. Devey8, D. Mertz8, J.-G. Schilling10, M. Murrell, 2011, Secondary crustal effects on MORB composition at the Kolbeinsey Ridge, Geochim. Cosmochim. Acta, Goldschmidt Suppl., A3396.

Elkins, L.J.,* Sims, K.W.W., 2011, Modeling non-linear variations in melt productivity in mantle melt regimes, EOS Trans. AGU, Fall Meeting Suppl. V32B-03,.

Elkins, L.J.*, Sims, K.W.W., Dunbar, N., 2009, Seawater alteration of Arctic mid-ocean ridge basalts, EOS Trans. AGU, Fall Meeting Suppl., V33D-2063.

Elkins, L.J., Sims, K.W.W.*, Prytulak, J., Blichert-Toft, J., Blusztajn, J., Fretzdorff, S., Haase, K., Elliott, T., Humphris, S., Schilling, J.-G., 2009, Generation of 231Pa, 226Ra, 238U, and 230Th excesses in Arctic mid-ocean ridge basalts from the Kolbeinsey, Mohns, Knipovich, and Gakkel Ridges, Plenary Lecture, 16th International Symposium on Polar Sciences, Incheon Korea.

Elkins, L.J.*, Sims, K.W.W., Prytulak, J., Blichert-Toft, J., Mattielli, N., Elliott, T., Devey, C., Mertz, D., Kelemen, P., Murrell, M., Schilling, J.-G., 2009, (234U/238U) and (230Th/238U) disequilibria in fresh and altered Kolbeinsey Ridge basalts, Geochim. Cosmochim. Acta, Goldschmidt Suppl., 73 (13), Suppl. 1, A325.

Elkins, L.J., Sims, K.W.W.*, Prytulak, J., Mattielli, N., Elliott, T., Blichert-Toft, J., Devey, C., Fretzdorff, S., Mertz, D., Kelement, P., Murrell, M. Schilling, J.-G., Humphris, S., 2008, Insights into melting processes on slow-spreading ridges north of Iceland from U, Th, Ra, and Pa isotopes, IAVCEI 2008 General Assembly, 1c/1e P05.

 

Links