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Filters Date Range Past year (2) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Volcano Science Center Patrick Whelley Daniel A Coulthard U.S. Geological Survey U.S. Geological Survey - ScienceBase More... Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (2) Harvest Set (2) Tag Schemes None (2) USGS Thesaurus (1) ISO 19115 Topic Category (2) Common geographic areas (1) Lithologic classification of geologic map units (1) View Results as: JSON ATOM CSV

NASA GIFT Iceland Highlands: 2015-2019 Baugur LiDAR LiDAR scans were taken using a tripod mounted Riegl VZ-400 scanning LiDAR. The tripod was set up such that the scanner was between 1.5 and 2.5 m tall. The VZ-400 is a near infrared (1550 nm) scanner. Geometric control was achieved using a pair of Trimble RB GPS antennae, one mounted on the LiDAR scanner (rover) and the other setup as a base station. Before taking a LiDAR scan, the VZ-400 would use the GPSs to fix a real time kinematic (RTK) solution for the scanner’s location and then use that position (scan position) as a reference for LiDAR returns. Post processing was done using RIScan-Pro version 2 (scanner specific software). Also, in post-processing, overlapping areas of point clouds were merged and inaccuracies... Categories: Data; Tags: Baugur, Holocene, 2014, Holuhraun, Iceland, Planetary Sciences, All tags... USGS Science Data Catalog (SDC), Volcanology, Volcanology, cinder, geoscientificInformation, lava flow, lava flow, lidar, regolith, spatter, vent, volcanism, Fewer tags Data Support for a Statistical Perspective on the Petrologic Utility of Polyphase Groundmass Compositions Inferred Via Defocused Beam Electron Probe Microanalysis This dataset contains major and trace element compositions for a sample of basalt recovered from Rangitoto Island, New Zealand. Both bulk rock and microanalytical observations are made and presented. Electron probe microanalysis (EPMA) results detail the compositions of individual phases within the basalt including olivine, clinopyroxene, plagioclase feldspar, glass, and polyphase microcrystalline groundmass. Laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) results detail trace element compositions for the glass as well as on select olivine grains. X-Ray fluorescence (XRF) data detailing major and minor element oxide concentrations were gathered using bulk rock powders. Additional tables detail... Categories: Data; Tags: Geochemistry, New Zealand, Rangitoto Island, USGS Science Data Catalog (SDC), basalt, All tags... geoscientificInformation, microanalysis, polyphase, volcanism, Fewer tags