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During 2023–24, the U.S. Geological Survey, in cooperation with the Edwards Aquifer Authority, revised a previous publication of the geologic framework and hydrostratigraphy of the Edwards and Trinity aquifers that was completed during 2018–20 within northern Medina County, Texas. The purpose of this report is to present the updated geologic framework and hydrostratigraphy of the rocks...

A helicopter overflight on September 18, 2024, allowed for aerial visual and thermal imagery to be collected at the middle East Rift Zone eruption site on Kīlauea.

This reference map depicts the eruption along Kīlauea's middle East Rift Zone as of September 18, 2024.

This reference map depicts the eruption along Kīlauea's middle East Rift Zone as of September 17, 2024.

A helicopter overflight on September 17, 2024, allowed for aerial visual and thermal imagery to be collected at the middle East Rift Zone eruption site on Kīlauea.

This thermal map shows two small lava pads erupted late on September 15, just west of Nāpau Crater on the East Rift Zone of Kīlauea.

This reference map depicts the September 15, 2024, eruption along Kīlauea's middle East Rift Zone.

This reference map depicts the approximate location of the fissures that erupted from the Kīlauea middle East Rift Zone, likely between approximately 9:00 and 10:00 p.m. HST on Sunday 15, 2024, in a remote and closed area of Hawaiʻi Volcanoes National Park.

This map shows recent deformation at Kīlauea over the timeframe of September 2–14, 2024.

Introduction Geologic cross section N–N′ is the sixth in a series of geologic cross sections constructed by the U.S. Geological Survey to document and improve understanding of the geologic framework and petroleum systems of the Appalachian basin. Cross section N–N′ provides a regional view of the structural and stratigraphic framework of the Appalachian basin in the Valley and Ridge...

This map shows recent deformation and earthquakes at Kīlauea, over the timeframe of August 9-21, 2024.

This map shows recent deformation at Kīlauea, over the timeframe of August 7-19, 2024.