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Alamagan Volcano - geochronologic points Alamagan Volcano is a Quaternary stratovolcano along the Mariana Arc, an active subduction zone in the western Pacific Ocean. Although primarily submerged, its peak reaches above sea level, with subaerially-exposed volcanic deposits dating back through the Holocene to the late Pleistocene. These feature data represent such deposits and other geologic features of Alamagan Volcano, describing its interpreted eruptive history. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alamagan Island, Andesite, GeochronPoints, Intermediate volcanic rock, Lava flow, All tags... Northern Islands, Northern Mariana Islands, Pacific, Pacific Islands, Pyroclastic rock, United States, Volcanic rock, geochronologic point, geologic maps, radiocarbon, radiocarbon point, radiocarbon sample, volcanic activity, Fewer tags Isotopic, geochronologic and soil temperature data for Holocene and late Pleistocene soil carbonates of the San Luis Valley, Colorado and New Mexico, USA This data release contains radiocarbon dates and clumped isotope ratios for soil carbonates as well as observed soil temperatures for study sites in the San Luis Valley, Colorado and New Mexico, USA. The companion publication can be found at https://doi.org/10.1029/2023GC011221. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado, Geochemistry, Hydrology, Land Use Change, New Mexico, All tags... San Luis Valley, Soil Sciences, USGS Science Data Catalog (SDC), biota, clumped isotopes, radiocarbon, soil carbonate, soil temperature, Fewer tags