The Sedimentary Records of Environmental Change Laboratory analyzes physical, biological, and isotopic properties of sediment from lakes and other depositional settings to interpret past environmental and climate changes, and to provide age control. The laboratory is integrated with the Amino Acid Geochronology Laboratory, and affiliated with other analytical labs at NAU and other universities.
We specialize in analyzing sedimentary:
· Biogenic-silica content (wet-alkaline extraction)
· Pigment (chlorophyll) content (Specim hyperspectral core scanner)
· Particle-size distribution (Coulter LS13-320 laser diffraction)
· Magnetic susceptibility (Bartington MS2 system)
· Thermogravimetry (Natzsch STA449-F1)
We prepare samples for radiocarbon dating:
· Acid-base-acid treatment
· Rapid AMS analysis of small carbonate samples
Opportunities are available for students to work and conduct supervised research in the laboratory.