We assemble all available geothermal heat flow measurements collected in and around Greenland into a new database. We use this database of point measurements, in combination with other geophysical datasets, to model geothermal heat flow in and around Greenland. Our geothermal heat flow model is generally cooler than previous models of Greenland, especially in southern Greenland. It does not suggest any high geothermal heat flows resulting from Icelandic plume activity over 50 million years ago.

The last interglacial period, known as marine isotope substage (MIS) 5e, was the last time in recent geologic history when sea level was substantially higher than present. It is an important time period to understand because climate models forecast a higher global sea level in the not-too-distant future. Geologic records of this high-sea stand (marine terraces, reefs) along the Pacific coast of North America are reviewed here with the identification of knowledge gaps where more work is needed.

We present a library of high-resolution laser-induced fluorescence (LiF) reference spectra using the Smithsonian rare earth phosphate standards for electron microprobe analysis. With the recurring interest in rare earth elements (REEs), LiF may provide a powerful tool for their rapid and accurate identification. Applications of the spectral LiF library to natural materials such as rocks could complement the spectroscopy-based toolkit for innovative, non-invasive exploration technologies.

Under a NATO project, we installed a monitoring system at the Khoko landslide facing the Enguri artificial reservoir (Greater Caucasus). During 2016–2019, we compare slope deformation with meteorological factors and variations in the water level of the reservoir. Our results indicate that the landslide displacements appear to be controlled by variations in hydraulic load and partially by rainfall.

Tectonically active coasts are dynamic environments that host densely populated areas and associated infrastructure. We measured and described last interglacial marine terraces along 5000 km of the western South American coast. The pattern of terrace elevations displays short- to long-wavelength structures that may be controlled by crustal faults and the subduction of major bathymetric anomalies. Latitudinal climate characteristics may further influence their generation and preservation.