Geochemistry

The Geochemistry faculty study a wide range of processes and interactions, including products of large-scale Earth differentiation, such as the composition, evolution and age of the mantle and core, the formation and evolution of oceanic and continental crust, interactions between the geochemical environment (soil, water, air) and human health, fundamental questions involving the oceans and continental water systems, global geochemical cycles involving the atmosphere, oceans and Earth's interior, natural and engineered methods for carbon capture and storage, and using a wide range of geochemical archives to understand how and why the ocean and climate have changed at timescales ranging from seasons to millions of years. The faculty has developed strong collaborations with Columbia University engineers, biologists, public health researchers and American Museum of Natural History petrologists, planetary geologists and paleontologists.

Maayan Yehudai
Personal Information
Maayan
Yehudai
Graduate Student
Earth and Environmental Sciences
Geochemistry
Contact Information
Maayan_Yehudai.jpg
419 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8328

Fax: 

(845) 365-8155
Frank Pavia
Personal Information
Frank
Pavia
Graduate Student
Earth and Environmental Sciences
Geochemistry
Contact Information
423 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8793

Fax: 

(845) 365-8155

Fields of interest: 

Chemical Oceanography, Isotope Geochemistry, Marine Biogeochemistry, Paleoceanography
Education
M.A.
Columbia University
05/2016
B.A.
Columbia University
05/2014
Selected Publications:
,
Timothy C. Kenna
Personal Information
Timothy
C.
Kenna
Research Scientist
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
227 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8513

Fax: 

(845) 365-8155
Leopoldo Pena
Personal Information
Leopoldo
Pena
Lamont Assistant Research Professor
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
Jonathan Nichols
Personal Information
Jonathan
Nichols
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Biology and Paleo Environment
Contact Information
101D Paleomagnetics
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8428

Fax: 

(845) 365-8150
Robert Newton
Personal Information
Robert
Newton
Research Scientist
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
111 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8686

Fax: 

(845) 365-8155

Fields of interest: 

Physical Oceanography, Arctic Climate Change, Large-scale isotope tracer distributions in the ocean, nutrient cycling in the Arctic Ocean and the Hudson Valley

Some of my projects include:

  • Environmental Tracers Group at LDEO ( details )
  • World Ocean Chemistry Experiment ( details )
  • Arctic Freshwater Initiative ( details )
Education
Ph. D., Earth and Environmental Sciences
Columbia University
2001
M.Phil., Earth and Environmental Sciences
Columbia University
1996
A.B.D., Mathematics
Graduate Center of the City University of New York
1982
B.S., Social Theory, Structure and Change
Empire State College, SUNY
1978
Selected Publications:
Mantle helium reveals Southern Ocean hydrothermal venting, Winckler, G.; Newton, R.; Schlosser, P.;Crone, T Geophysical Research Letters (2010) 10.1029/2009GL042093
Freshwater distribution in the Arctic Ocean: simulation with a high-resolution model and model-data comparison., Newton, R., Schlosser, P., Martinson, D.G., and Maslowski, M. Journal of Geophysical Research, Volume: 113, Issue: C5 p.: C05024 (2008)
A simple model of the Arctic Ocean response to annular wind stress anomalies., Newton, R., Tremblay, B., Cane, M., and Schlosser, P. Journal of Geophysical Research, Volume: 111, Issue: C9 p.: C09019 (2006)
Elements of the global Ocean Circulation inferred from the WOCE tritium and C-14 data sets, Schlosser, P.; Jenkins, W.; Key, R.; Newton, R.; Roether, W.; Top, Z. Geochimica Et Cosmochimica Acta Jun, Volume: 68, Issue: 11 p.: A489-A489 (2004)
Decrease of river runoff in the upper waters of the Eurasian Basin, Arctic Ocean, between 1991 and 1996: Evidence from delta O-18 data, Schlosser, P.; Newton, R.; Ekwurzel, B.; Khatiwala, S.; Mortlock, R.; Fairbanks, R. Geophysical Research Letters May 1, Volume: 29, Issue: 9 p.: - (2002) Doi 10.1029/2001gl013135
Wade McGillis
Personal Information
Wade
McGillis
Lamont Associate Research Professor
Lamont-Doherty Earth Observatory
Geochemistry
Contact Information
401 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8562

Fax: 

(845) 365-8155
Elizabeth Shoenfelt
Personal Information
Elizabeth
Shoenfelt
Graduate Student
Earth and Environmental Sciences
Geochemistry
Contact Information
Shoenfelt.jpg
419 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8328

Fax: 

(845) 365-8155
Juan Carlos deObeso
Personal Information
Juan Carlos
deObeso
Graduate Student
Earth and Environmental Sciences
Geochemistry
Contact Information
207 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8609

Fax: 

(845) 365-8155

An Engineer learning how to be a geologist. I am focusing my research on geochemistry of low temperature alterations of peridotites.

Education
MA in Climate and Society
Columbia University
10/2012
BS in Chemical Engineering
ITESO
09/2008
Kassandra Costa
Personal Information
Kassandra
Costa
Graduate Student
Earth and Environmental Sciences
Geochemistry
Contact Information
107 Comer
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US
(845) 365-8454

Fax: 

(845) 365-8155

Fields of interest: 

Isotope geochemistry, paleoclimatology, paleoceanography, marine biogeochemistry

My research interests involve the application of major elements, trace elements and isotopes to investigate the interface between climate, biogeochemistry, and the environment. I am particularly interested in the tropics, and my recent projects have included stable isotope (dD) geochemistry in Ethiopia, redox (Fe, Cr, U) variability in Indonesia, and productivity and dust (231Pa/230Th, 232Th, d15N) fluctuations in the Central Equatorial Pacific. In my upcoming work, I will investigate the relationship between volcanism and global climate change at orbital timescales by tracking changes in hydrothermal vent activity as recorded in marine sediment cores from the Juan de Fuca Ridge.

Education
Sc. B.
Brown University
05/2012
Selected Publications:
Isotopic reconstruction of the African Humid Period and Congo Air Boundary migration at Lake Tana, Ethiopia, Costa, K.; Russell, J.; Konecky, B.; Lamb, H. Quaternary Science Reviews, Volume: 83 p.: 58-67 (2014)
Glacial forcing of central Indonesian hydroclimate since 60,000 yr B.P, Russell, J.M.; Vogel, H.; Konecky, B.L.; Bijaksana, S.; Huang, Y.; Melles, M.; Wattrus, N.; Costa, K.; King, J.W. Proceedings of the National Academy of Science p.: 2-7 (2014)
Hydrological connectivity and mixing of Lake Towuti, Indonesia in response to paleoclimatic changes over the last 60,000 years, Costa, K.; Russell, J.; Vogel, H.; Bijaksana, S. Palaeogeography, Palaeoclimatology, Palaeoecology (2014)

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