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Maps of elevation of top of Pierre Shale and surficial deposit thickness with hydraulic properties from borehole geophysics and aquifers tests within and near Ellsworth Air Force Base, South Dakota, 2020–21

The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineer Center, collected borehole geophysical data and completed simple aquifer tests to estimate the thickness and hydraulic properties of surficial deposits. The purpose of data collection was to create generalized contour maps of Pierre Shale elevation and surficial deposit thickness within and near Ellsworth Air Force B
By
Dakota Water Science Center

January 18, 2023—Kīlauea summit eruption reference map

This reference map depicts the Kīlauea summit eruption on January 18, 2023.

By
Natural Hazards, Volcano Hazards, Hawaiian Volcano Observatory, Kīlauea

January 17, 2023 — Kīlauea summit thermal maps

A helicopter overflight on January 17, 2023, allowed for aerial visual and thermal imagery to be collected of Halema‘uma‘u crater at the summit of Kīlauea.

By
Natural Hazards, Volcano Hazards, Hawaiian Volcano Observatory, Kīlauea, Kīlauea

Geologic map of the Silver Zone Pass quadrangle, Elko County, Nevada

This 1:24,000-scale geologic map of the Silver Zone Pass quadrangle lies in the southern Toano Range in Elko County, Nevada. Metamorphic and sedimentary strata of the quadrangle range from Neoproterozoic to Permian in age. Important intrusions include the Late Jurassic (ca. 159 Ma) Silver Zone Pass pluton and Cretaceous Toano Spring pluton. In particular, the Silver Zone Pass pluton involves undef
By
National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

January 11, 2023—Kīlauea summit eruption reference map

This reference map depicts the Kīlauea summit eruption on January 11, 2023.

By
Natural Hazards, Volcano Hazards, Hawaiian Volcano Observatory, Kīlauea

January 10, 2023 — Kīlauea summit thermal maps

A helicopter overflight on January 10, 2023, allowed for aerial visual and thermal imagery to be collected of Halema‘uma‘u crater at the summit of Kīlauea.

By
Natural Hazards, Volcano Hazards, Hawaiian Volcano Observatory, Kīlauea

January 8, 2023 — Kīlauea summit thermal maps

 A helicopter overflight on January 8, 2023, allowed for aerial visual and thermal imagery to be collected of Halema‘uma‘u crater at the summit of Kīlauea.

By
Natural Hazards, Volcano Hazards, Hawaiian Volcano Observatory, Kīlauea

January 6, 2023—Kīlauea summit eruption reference map

This reference map depicts the ongoing Kīlauea summit eruption on January 6, 2023.

By
Volcano Hazards, Hawaiian Volcano Observatory, Kīlauea

Geologic map of the source region of Shalbatana Vallis, Mars

Xanthe Terra is a high-standing cratered plain located southeast of Lunae Planum and south of Chryse Planitia in the western equatorial region of Mars. It contains landforms shaped by diverse geologic processes, including various scales of channels and valleys, chaotic terrains, delta fan deposits, and landslides. An extensive outflow channel system is located within Xanthe Terra and the surroundi
By
Natural Hazards, Astrogeology Science Center

Delineating the Pierre Shale from geophysical surveys east and southeast of Ellsworth Air Force Base, South Dakota, 2021

The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineer Center, used surface-geophysical methods to delineate the top of Cretaceous Pierre Shale along survey transects in selected areas east and southeast of Ellsworth Air Force Base, South Dakota, from April to September 2021. Two complementary geophysical methods—electrical resistivity and passive seismic—were used along
By
Dakota Water Science Center

December 12, 2022 — Mauna Loa Eruption Map

This reference map depicts the ongoing Mauna Loa eruption on Dec. 12, 2022.

By
Volcano Hazards, Hawaiian Volcano Observatory, Mauna Loa

December 11, 2022 — Mauna Loa Eruption Map

This reference map depicts the ongoing Mauna Loa eruption on Dec. 11, 2022.

By
Volcano Hazards, Hawaiian Volcano Observatory, Mauna Loa