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The IMAGE Lab hosts three spaces:
The Chemistry Lab is an ISO Class 6 / FS209E Class 1000 chemistry lab with three ISO Class 4 / FS209E Class 10 vertical laminar flow hoods, weighing station, and related equipment to conduct cation exchange column chromatography for U-Th geochronology
The Mass Spectrometer Lab is an ISO Class 7 / FS209E Class 10,000 clean room and hosts three instruments:
A Thermo Neoma multi-collector inductively coupled plasma mass spectrometer (ICP-MS)
An Agilent 8900 QQQ ICP-MS
An ESI Lasers NWR 193 ImageGEO Laser Ablation system
The Preparation Lab: A space to cut, drill, dremel, sonicate, separate, and epoxy-mount samples.
Applications
Applications
Using the QQQ ICP-MS (and researchers co-leading this work with me):
Using the QQQ ICP-MS (and researchers co-leading this work with me):
In situ trace element concentration profiling of volcanic glass and carbonate biominerals (Akhtar)
In situ trace element concentration profiling of volcanic glass and carbonate biominerals (Akhtar)
In situ U-Pb dating (Apen)
In situ U-Pb dating (Apen)
in situ elemental mapping in ice cores (Weldeghebriel)
in situ elemental mapping in ice cores (Weldeghebriel)
Solution-based geochemical assay of water (Omengo)
Solution-based geochemical assay of water (Omengo)
Solution-based measurements of lithium isotopes (Weldeghebriel)
Solution-based measurements of lithium isotopes (Weldeghebriel)
Using the Neoma (in progress; and researchers leading this work):
Using the Neoma (in progress; and researchers leading this work):
Uranium-series (U-Th-Pb) geochronology of carbonates (Niespolo, Salas-Saavedra)
Uranium-series (U-Th-Pb) geochronology of carbonates (Niespolo, Salas-Saavedra)
Strontium isotopes by Laser Ablation (LA) ICP-MS (Niespolo, Weldeghebriel)
Strontium isotopes by Laser Ablation (LA) ICP-MS (Niespolo, Weldeghebriel)
Split-Stream laser ablation dual ICP-MS to simultaneously measure major and trace elements on the QQQ and a selected isotope system on the Neoma (Niespolo)
Split-Stream laser ablation dual ICP-MS to simultaneously measure major and trace elements on the QQQ and a selected isotope system on the Neoma (Niespolo)
Research Themes
Research Themes
I am interested in anchoring paleoclimate and fossil records to absolute timescales to assess correlations of local and global environmental changes to evolution and adaptation.
I am interested in anchoring paleoclimate and fossil records to absolute timescales to assess correlations of local and global environmental changes to evolution and adaptation.
A Core Research Theme addresses outstanding questions on the timing and tempo of human evolution, the development of modern human behaviors, and the timing of global-scale human colonization. How these are recorded, what local environments were like during these significant leaps in biological and cultural evolution, and human-environment interactions, drive my research.
A Core Research Theme addresses outstanding questions on the timing and tempo of human evolution, the development of modern human behaviors, and the timing of global-scale human colonization. How these are recorded, what local environments were like during these significant leaps in biological and cultural evolution, and human-environment interactions, drive my research.
In the field, I include landscape survey, sediment and tephra stratigraphy, drill cores, and archaeological excavation to constrain the ages and paleoenvironments of deposits critical to understanding the core research themes.
In the field, I include landscape survey, sediment and tephra stratigraphy, drill cores, and archaeological excavation to constrain the ages and paleoenvironments of deposits critical to understanding the core research themes.
In the lab, I use a combination of micro-analytical approaches (laser ablation, petrography, electron microscopy, x-ray techniques) and high-precision mass spectrometry to target the optimal sample needed for the geological/chronological question of interest.
In the lab, I use a combination of micro-analytical approaches (laser ablation, petrography, electron microscopy, x-ray techniques) and high-precision mass spectrometry to target the optimal sample needed for the geological/chronological question of interest.
I am also interested in understanding crustal processes using petrology and isotope geochemistry, a focus of my M.S. research (see "recent projects" in the Research drop-down menu).
I am also interested in understanding crustal processes using petrology and isotope geochemistry, a focus of my M.S. research (see "recent projects" in the Research drop-down menu).
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