Energy Resources Program

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Filter Total Items: 90
Image shows grass-covered rocks with rolling hills in the background
January 6, 2021

Tingmerkpuk Ridges

Jurassic rocks exposed in thurst-faulted structures near the southern limit of Western North Slope. In the subsurface farther north, these rocks may be reservoir rocks for natural gas.

Image shows an aerial view of rolling hills and rock formations
January 6, 2021

Western North Slope Foothills

The Kukpowruk River cuts through folded Cretaceous rocks in the central North Slope. These rocks were assessed by the USGS in 2017 and lie above the rocks assessed in the USGS 2021 Western North Slope assessment.

Image shows rocky ground with grasslands and a USGS scientist in the background
January 6, 2021

Western North Slope Foothills

Geologist hikes across folded Cretaceous rocks in the central North Slope. These rocks were assessed by the USGS in 2017 and lie above the rocks assessed in the USGS 2021 Western North Slope assessment.

Image shows a rock core in a trough
October 19, 2020

Austin Chalk Core

Bedding features in the core from the USGS Gulf Coast #4 Bonham borehole, in the Eagle Ford Group mudstones from a depth of about 401 feet, Fannin County, Texas. The Eagle Ford Group lies underneath the Austin Chalk and serves as the source rock for much of the Austin Chalk's petroleum.

Image shows three men in safety equipment standing next to a drill rig
October 19, 2020

USGS Technicians Prepare to Take a Core of the Austin Chalk in Texas

USGS technicians at the USGS Gulf Coast #4 Bonham borehole in preparation for geophysical logging of the Austin Chalk Group and the Eagle Ford Group mudstones, Fannin County, Texas.

Image shows a landscape of a large rock and sediment outcropping with grass coverings
October 11, 2020

Kukpowruk Redwul

Faulted and folded petroleum source rocks in Jurassic and Cretaceous rocks (Kingak Shale, pebble shale unit, and gamma-ray zone of Hue Shale) in southern part of Western North Slope. Thermal maturity of these rocks are at the upper limit of oil preservations. Oil odor indicates that oil was generated from these rocks but it likely migrated to other rocks or was transformed

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Image shows two pyramidal rock outcroppings with grass coverings
October 11, 2020

Kukpowruk Redwul

Geologist examines f Faulted and folded petroleum source rocks in Jurassic and Cretaceous rocks (Kingak Shale, pebble shale unit, and gamma-ray zone of Hue Shale) in southern part of Western North Slope. Thermal maturity of these rocks is at the upper limit of oil preservations. Oil odor indicates that oil was generated from these rocks but it likely migrated to other

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Image is an aerial shot showing grass-covered rolling hills with occasional exposed rock formations
October 11, 2020

Surprise Creek, Western North Slope of Alaska

Overview of folded Triassic, Jurassic, and Cretaceous rocks in southern part of Western North Slope.

Image shows a helicopter with four USGS scientists talking to each other next to it, with grasslands in the background
October 11, 2020

Tingmerkpuk Ridges

Geologists discuss the geology of Jurassic rocks in thurst-faulted structures near the southern limit of Western North Slope.

Silica Crucible and Glass Desiccator
October 11, 2020

Silica Crucible and Glass Desiccator

Geochemists use platinum, silica, and ceramic crucibles, shown here in a glass container called a desiccator.  Silica is used because it is resistant to extremely high temperatures and because it is chemically inert. Silicon, linked up with a pair of oxygen molecules as silicon dioxide, is known as silica. 

Image shows a detail shot of a rock outcropping with grass covering in the background and two USGS scientists in hivis clothes
October 11, 2020

Kokolik River Oil Sand

Oil-saturated sandstone in the Nanushuk Formation in westernmost National Petroleum Reserve in Alaska (NPR-A). Oil in these rocks likely was generated beneath Western North Slope and migrated northeastward into NPR-A.

Click on image for full description.
September 16, 2020

GeoDAWN: Geoscience Data Acquisition for Western Nevada

The USGS Earth Mapping Resources Initiative and USGS 3D Elevation Program (3DEP), Department of Energy Geothermal Technologies Office, Natural Resources Conservation Services, and Bureau of Land Management have partnered to conduct airborne geophysical and 3DEP lidar surveys over parts of Nevada and California to collect information on undiscovered geothermal, critical

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