Geology-Paleontology

The Geology/Paleontology faculty are exploring processes recorded in the rock record, including sedimentary, structural, igneous, marine, planetary and glacial geology; paleontology and geobiology. Research is process-oriented and interdisciplinary, with a strong field component. Active areas of research include faulting and crustal deformation within the lithopshere and along tectonic plate boundaries, the sedimentary record of climate and sea-level change, tectonic drivers of magmatism, volcanic systems, the evolution of the crust and mantle in the context of seafloor spreading, subduction zone processes, arc magmatism and ocean island volcanoes, glacial and landslide geomorphology, the structure and evolution of deeply exhumed rocks, and the evolution of life. Many of these topics include both terrestrial and marine approaches. The faculty has developed strong collaborations with scientists at the American Museum of Natural History.

Terry A. Plank
Personal Information
Terry
A.
Plank
Arthur D. Storke Memorial Professor
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
411 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8410

Fax: 

(845) 365-8155

Fields of interest: 

Geochemistry, Igneous Petrology

My research is focused on magmas associated with the plate tectonic cycle, at both divergent and convergent plate margins. My main contributions have been to the understanding of: * Magma generation: quantifying the roles of decompression, temperature and water in driving mantle melting * Crustal recycling at subduction zones: providing global flux estimates of marine sediment subducted into oceanic trenches, and tracing sediment geochemically from the seafloor to arc volcanoes * Water content of magmas, and the effects on magma evolution, mantle and slab temperature, and eruptive vigor.

My tools are geochemical, field work has taken me to Nicaragua and the Aleutians, and to sea. I have served on the MARGINS steering committee, the editorial boards of Geology and Earth & Planetary Science Letters, the EarthScope Advisory Committee, as co-chief scientist on Leg 185 of the Ocean Drilling Program, co-lead-author of the SZ4D Vision Document, and one of the writing team for the NAS ERUPT Report.

Plank received the Houtermans Medal from the European Association for Geochemistry, the Donath Medal from the Geological Society of America, is a Fellow of the American Geophysical Union, the Geochemical Society, the Geological Society fo America, and the Mineralogical Society of America. In 2012 she was named a MacArthur Foundation Fellow,  in 2013 elected into the National Academy of Sciences, and in 2016 the American Academy of Arts and Sciences.

Some of my projects include:

  • Magmatism and Mantle Lithosphere across the Basin and Range
  • Volatiles In arc magmas and mantle xenoliths
  • Diffusion clocks of volcanic processes
  • Subduction fluxes of volatile and stable isotope tracers
Education
Ph.D.
Columbia University, Lamont-Doherty Earth Observatory
1993
A.B.
Dartmouth College
1985
Postdoc: Megan Newcombe
Selected Publications:
NanoSIMS results from olivine-hosted melt embayments: Magma ascent rate during explosive basaltic eruptions., Lloyd, A.S; Plank, T; Ruprecht, P; Hauri, E.H., Rose, W; Gonnermann, H.M. Journal of Volcanology and Geothermal Research, Volume: 283 p.: 1-18 (2014) http://dx.doi.org/10.1016/j.jvolgeores.2014.06.002.
Melting during late-stage rifting in Afar is hot and deep, Ferguson, D. J.; Maclennan, J.; Bastow, I. D.; Pyle, D. M.; Jones, S. M., Keir; D., Blundy, J. D.; Plank, T.; Yirgu, G. Nature 07/2013, Volume: 499 p.: 70-73 (2013) 0.1038/nature12292
Why do mafic arc magmas contain ~4 wt% water on average?, Plank, T., Kelley, K.A., †Zimmer, M.M., Hauri, E.H. and Wallace, P.J. Earth and Planetary Science Letters, Frontiers Article, Volume: 364 p.: 168-179 (2013)
Feeding andesitic eruptions with a high-speed connection from the mantle., Ruprecht, P. and Plank, T. Nature, Volume: 50 p.: 68-72 (2013) doi:10.1038/nature12342
The Hf-Nd isotopic composition of marine sediments, Vervoort, Jeff D.; Plank, Terry; Prytulak, Julie Geochimica Et Cosmochimica Acta 10/2011, Volume: 75 p.: 5903-5926 (2011)
New geothermometers for estimating slab surface temperatures, Plank, T.; Cooper, L.; Manning; C.E. Nature Geoscience, Volume: 2 p.: 611-615 (2009)
Maya Tolstoy
Personal Information
Maya
Tolstoy
Professor
Earth and Environmental Sciences
Marine Geology and Geophysics
Contact Information
303B Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8791

Fax: 

(845) 365-8156

Fields of interest: 

Marine Geophysics
Education
B.Sc. Honors Geophysics
University of Edinburgh
1988
Ph.D.
Scripps Institution of Oceanography, UCSD
1994
Selected Publications:
Seismic identification of along-axis hydrothermal flow on the East Pacific Rise, Tolstoy, M.; Waldhauser, F.; Bohnenstiehl, D. R.; Weekly, R. T.; Kim, W. Y. Nature Jan 10, Volume: 451, Issue: 7175 p.: 181-U7 (2008) Doi 10.1038/Nature06424
A sea-floor spreading event captured by seismometers, Tolstoy, M.; Cowen, J. P.; Baker, E. T.; Fornari, D. J.; Rubin, K. H.; Shank, T. M.; Waldhauser, F.; Bohnenstiehl, D. R.; Forsyth, D. W.; Holmes, R. C.; Love, B.; Perfit, M. R.; Weekly, R. T.; Soule, S. A.; Glazer, B. Science Dec 22, Volume: 314, Issue: 5807 p.: 1920-1922 (2006) DOI 10.1126/science.1133950
Hydroacoustic constraints on the rupture duration, length, and speed of the Great Sumatra-Andaman Earthquake, Tolstoy, M.; Bohnenstiehl, D. R. Seismological Research Letters Jul-Aug, Volume: 76, Issue: 4 p.: 419-425 (2005)
Broadband calibration of R/V Ewing seismic sources, Tolstoy, M.; Diebold, J. B.; Webb, S. C.; Bohnenstiehl, D. R.; Chapp, E.; Holmes, R. C.; Rawson, M. Geophysical Research Letters Jul 27, Volume: 31, Issue: 14 p.: - (2004) Doi 10.1029/2004gl020234
Breathing of the seafloor: Tidal correlations of seismicity at Axial volcano, Tolstoy, M.; Vernon, F. L.; Orcutt, J. A.; Wyatt, F. K. Geology Jun, Volume: 30, Issue: 6 p.: 503-506 (2002)
Seismic character of volcanic activity at the ultraslow-spreading Gakkel Ridge, Tolstoy, M.; Bohnenstiehl, D. R.; Edwards, M. H.; Kurras, G. J. Geology Dec, Volume: 29, Issue: 12 p.: 1139-1142 (2001) Doi 10.1038/Nature06424
Crustal Thickness on the Mid-Atlantic Ridge - Bulls-Eye Gravity-Anomalies and Focused Accretion, Tolstoy, M.; Harding, A. J.; Orcutt, J. A. Science Oct 29, Volume: 262, Issue: 5134 p.: 726-729 (1993)
Rachel Marzen
Personal Information
Rachel
Marzen
Graduate Student
Earth and Environmental Sciences
Marine Geology and Geophysics
Contact Information
302C Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US

Fax: 

(845) 365-8156
Education
BS
Rice University
05/2015
Selected Publications:
Calcareous microfossil-based orbital cyclostratigraphy in the Arctic Ocean, Marzen, Rachel E.; DeNinno, Lauren H.; Cronin, Thomas M. Quaternary Science Reviews, Volume: 149 (2016) 10.1016/j.quascirev.2016.07.004
Late Holocene sea level variability and Atlantic Meridional Overturning Circulation, Cronin, T. M.; Farmer, J. R.; Marzen, R. E.; Thomas, E.; Varekamp, J. C. Paleoceanography, Volume: 29 (2014) 10.1002/2014PA002632
Bridgit Boulahanis
Personal Information
Bridgit
Boulahanis
Graduate Student
Earth and Environmental Sciences
Marine Geology and Geophysics
Contact Information
Bridgit_Boulahanis2.jpg
303F Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8355

Fax: 

(845) 365-8156
Philipp Ruprecht
Personal Information
Philipp
Ruprecht
Lamont Assistant Research Professor
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
403 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8635

Fax: 

(845) 365-8155

Fields of interest: 

Magma chamber dynamics and magma transport; time scales of magmatic processes; subduction zone volcanism
Education
Ph.D. (geological sciences)
University of Washington
08/2009
Diplom (geological sciences)
Georg-August Universität Göttingen
06/2004
B.Sc. (geological sciences)
Georg-August Universität Göttingen
06/2001
Sean C. Solomon
Personal Information
Sean
C.
Solomon
Director
Lamont-Doherty Earth Observatory
Associate Director for Earth Systems Science
Earth Institute
William B. Ransford Professor of Earth and Planetary Science
Columbia University
Contact Information
214 Monell
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8714

Fax: 

(845) 365-8162
Helen Evans
Personal Information
Helen
Evans
Lamont Assistant Research Professor
Lamont-Doherty Earth Observatory
Marine Geology and Geophysics
Contact Information
101 Borehole
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8639

Fax: 

(845) 365-8777/3182
Alberto Malinverno
Personal Information
Alberto
Malinverno
Lamont Research Professor
Lamont-Doherty Earth Observatory
Marine Geology and Geophysics
Marine Geology and Geophysics
Lecturer
Earth and Environmental Sciences
Contact Information
304A Oceanography
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8577

Fax: 

(845) 365-8156
Edmond A. Mathez
Personal Information
Edmond
A.
Mathez
American Museum of Natural History
Adjunct Senior Research Scientist
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
425 Comer
Palisades
NY
10964-8000
US
(845) 365-8699

Fax: 

(845) 365-8155
Education
Ph.D.
University of Washington
1999
M.S.E.
University of Washington
1994
B.S.M.E.
Columbia University
1992

Pages