Recent landslides are analyzed by using field evidence, remote sensing, and monitoring data, while ancient landslides are studied through downhole geologic logging, geomorphic features, stratigraphy, and dating methods. 

Downhole geologic logging is the process of interpreting soil and rock conditions observed within a borehole during or after drilling. A geologist descends into the borehole to examine changes in lithology, structures, moisture content, strength, and other physical characteristics. This information helps create a detailed vertical profile of subsurface conditions, which is essential for foundation design, slope stability analysis, and hazard assessments. 

With decades of experience, Summit Geoscience provides geotechnical (geologic) peer review (i.e. 3rd party review), for public agencies, across Southern California.  Per the California Geotechnical Engineers Association (CGEA), the purpose of a geotechnical peer review is to check for compliance with minimum code standards, completeness, note obvious factual errors, check consistency of data with conclusions, and ensure standards of geotechnical practice, as well as to identify areas where the proposed design may lead to future significant problems.