Protocols

Detailed measurement and quantification of sedimentary structure types and their relative abundances in stratigraphic sections, including calculation of stratification ratios.

Standard method for determining exposure ages of rock surfaces using in-situ produced cosmogenic ¹⁰Be nuclides measured by accelerator mass spectrometry. Involves sample collection, quartz purificatio...

Numerical modeling approach combining energy-mass balance calculations with ice-flow modeling to reconstruct past glacier extents and determine paleoclimate conditions. Uses digital elevation models a...

Systematic sampling and isotopic analysis of carbon, oxygen, strontium, and sulfur from carbonate and sulfate minerals to determine paleoenvironmental conditions. Integration of multiple isotopic syst...

Spectroscopic technique for quantitative determination of chemical elements in samples.

In-field filtering of water samples using 0.2 µm polyethersulfone syringe filters. Removes particulate matter from surface water and groundwater samples.

Chemical analysis method for determining precious metal concentrations in mineral samples.

Chemical analysis of igneous and meta-igneous rock samples to determine composition and petrogenesis. Results presented in tables and geochemical diagrams.

Field mapping of volcanic rocks in thirteen 7.5-minute quadrangles combined with petrologic studies and high-resolution age determinations. Includes several hundred new chemical analyses and age deter...

Integration of new and compiled geologic mapping data with geospatial analysis for neotectonic and hydrologic investigations.

Laser ablation inductively coupled plasma mass spectrometry used for U-Pb detrital zircon geochronology analysis. Supports mapping and stratigraphic interpretations of Paleozoic sedimentary rocks.

Fire assay for gold and silver, and spectrographic analysis for 40 elements including copper, lead, molybdenum, tungsten, and uranium.

Analysis of pollen from archaeological site sediments to reconstruct past vegetation.

Scanning electron microscopy with cathodoluminescence imaging for characterizing zircon internal structure.

Regional assessments of major aquifer systems providing quantitative assessments of water occurrence, movement, and availability. Includes classification of stratigraphic sequences and generation of m...