Filters: Tags: lava flow (X) > Extensions: ArcGIS Service Definition (X) > Types: OGC WMS Layer (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types ArcGIS REST Map Service (2) ArcGIS Service Definition (2) Downloadable (2) Map Service (2) OGC WFS Layer (2) OGC WMS Service (2) Contacts Michael H Zoeller Joel E. Robinson Volcano Science Center U.S. Geological Survey - ScienceBase Natural Hazards More... Categories Data (2) Tag Types Theme (2) Place (2) Harvest Set (2) USGS Scientific Topic Keyword (1) Tag Schemes Common geographic areas (2) None (2) Lithclass6.2 (1) USGS Thesaurus (2) Lithologic classification of geologic map units (1) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

Digital database of the geologic map of Alamagan Volcano, northern Mariana Islands 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: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alamagan Island, Andesite, Intermediate volcanic rock, Lava flow, NMI_Alamagan, All tags... Northern Islands, Northern Mariana Islands, Pacific, Pacific Islands, Pyroclastic rock, USGS Science Data Catalog (SDC), United States, Volcanic rock, Volcanology, geologic maps, volcanic activity, Fewer tags Database for the geologic map of the northern Harrat Rahat volcanic field, Kingdom of Saudi Arabia The Harrat Rahat volcanic field, located in the west-central part of the Kingdom of Saudi Arabia, is the largest of 15 harrats (Arabic for 'volcanic field') hosted within the Arabian plate. Harrat Rahat is 50 to 75 km wide (east-west) and 300 km long (north-south), covering an area of approximately 20,000 square kilometers and encompassing more than 900 observable vents. The overall map area and its dataset show the volcanic geology of the northern part (about 3,340 square kilometers) of Harrat Rahat, at a scale of 1:75,000. Two additional map areas and their feature classes highlight areas of interest at 1:25,000 scale. Northern Harrat Rahat is of interest owing to the location of the city of Al-Madinah Al-Munawarah... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Al-Madinah Al-Munawarah, Basalt, Benmoreite, Harrat Rahat volcanic field, Lava flow, All tags... Mugearite, Saudi Arabia, Trachyte, USGS Science Data Catalog (SDC), geology, geoscientificInformation, volcanic activity, Fewer tags