Welcome to the Isotope Geochemistry Lab at
Lamont-Doherty Earth Observatory. The lab is composed of members of
the Department of Earth and
Environmental Sciences and LDEO with a wide range of
interests, united by a passion for scientific inquiry and discovery.
Current projects range from studies of
magmatic processes to chemical oceanography, from the history of the
early Earth to recent climate changes. Most studies utilize the
products of natural radioactive decay in rocks and waters, as process
tracers and to determine absolute ages. Routinely used isotopic
techniques include Rb-Sr, Sm-Nd, Th-U-Pb, Lu-Hf, Li isotopes, and
intermediate products of U-decay.
The group has an active field program.
Recent trips include sampling of volcanics and sediments from the
Pacific, Atlantic, Indian, Antarctic and Arctic ocean floor,
volcanoes in Mexico, Chile, and off the coast of eastern Africa,
uplifted coral reefs in Barbados, sediments of the glacial Dead Sea,
tufas and sediments at Mono Lake in California, sediments from the
Parana River in Argentina, and glacial flour from the Greenland coast.
The facility includes ultra-clean and
conventional chemistry labs, a multi-collector thermal ionization
mass spectrometer (TIMS), and a multi-collector inductively coupled
plasma mass spectrometer (MC-ICPMS). Complementary analytical
facilities at Lamont also available for use by lab members include
plasma mass spectrometers and spectrophotometers for trace element
analyses, mass spectrometers for rare gas analyses, x-ray
diffraction, scanning electron microscope, and electron microprobe.
Prospective students and post-doctoral
fellows with a passion for scientific exploration, who are willing to
get their hands dirty but keep their samples clean are encouraged to