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The moon in the sky above the Great Unconformity within the Colorado National Monument
The Great Unconformity, Colorado National Monument
The Great Unconformity, Colorado National Monument
The Great Unconformity, Colorado National Monument

The moon sets over an exposure of the Great Unconformity within the Colorado National Monument (Colorado, USA). At this location, Paleoproterozoic granite (foreground) is unconformably overlain by the Upper Triassic Chinle Formation.

The moon sets over an exposure of the Great Unconformity within the Colorado National Monument (Colorado, USA). At this location, Paleoproterozoic granite (foreground) is unconformably overlain by the Upper Triassic Chinle Formation.

Geologist examines multi-colored lacustrine shales of the Oligocene Amargosa Valley Formation, California
Multi-colored lacustrine shales of the Oligocene Amargosa Valley Formation
Multi-colored lacustrine shales of the Oligocene Amargosa Valley Formation
Multi-colored lacustrine shales of the Oligocene Amargosa Valley Formation

Research Geologist Jens-Erik Lundstern explores multi-colored lacustrine shales of the Oligocene Amargosa Valley Formation (Bat Mountain, California, USA). 

View of Cenozoic fluvial conglomerates in the Delamar Mountains with person for scale
Cenozoic fluvial conglomerates in the Delamar Mountains, Nevada
Cenozoic fluvial conglomerates in the Delamar Mountains, Nevada
Cenozoic fluvial conglomerates in the Delamar Mountains, Nevada

Research Geologist Jens-Erik Lundstern poses as a scale for middle Cenozoic fluvial conglomerates in the Delamar Mountains (southern Nevada, USA). 

Some members of the USGS Geologic Framework of the Intermountain West project in the field
Geologic Framework of the Intermountain West project members
Geologic Framework of the Intermountain West project members
Geologic Framework of the Intermountain West project members

Intermountain West Project members pose at the summit of Crested Butte (Colorado, USA) prior to examining the Crested Butte laccolith (from left to right, Jeremy Workman, Allison Dombrowski, Ian Hillenbrand, Amy Gilmer, Kenzie Turner, and Ren Thompson). 

Intermountain West Project members pose at the summit of Crested Butte (Colorado, USA) prior to examining the Crested Butte laccolith (from left to right, Jeremy Workman, Allison Dombrowski, Ian Hillenbrand, Amy Gilmer, Kenzie Turner, and Ren Thompson). 

A view looking westward to Cottonwood Pass in the Sawatch Range, Colorado
Cottonwood Pass, Colorado
Cottonwood Pass, Colorado
Cottonwood Pass, Colorado

A view westward from Cottonwood Pass (Sawatch Range, Colorado, USA) into the Taylor Park basin. The peaks in the backgorund are composed of igneous and metamorphic rocks ranging in age from early Paleozoic to Eocene, uplifted along the Taylor Park fault.

A view westward from Cottonwood Pass (Sawatch Range, Colorado, USA) into the Taylor Park basin. The peaks in the backgorund are composed of igneous and metamorphic rocks ranging in age from early Paleozoic to Eocene, uplifted along the Taylor Park fault.

Photo of East Red Mountain, Colorado
East Red Mountain in the Grizzly Peak caldera, Colorado
East Red Mountain in the Grizzly Peak caldera, Colorado
East Red Mountain in the Grizzly Peak caldera, Colorado

Vivid red, orange, and yellow colors highlight hydrothermally altered rocks on East Red Mountain in the Grizzly Peak caldera (Sawatch Range, Colorado, USA).

Geologists discuss Oligocene-Miocene Troublesome outcrop near Kremmling, Colorado
Oligocene-Miocene Troublesome outcrop
Oligocene-Miocene Troublesome outcrop
Oligocene-Miocene Troublesome outcrop

Intermountain West Project members discuss an outcrop of the Oligocene-Miocene Troublesome Formation (near Kremmling, Colorado, USA).

Hiker walks over sedimentary rocks in Death Valley National Park
Sedimentary rocks in Death Valley National Park
Sedimentary rocks in Death Valley National Park
Sedimentary rocks in Death Valley National Park

Research Geologist Theresa Schwartz walks over Cenozoic sedimentary rocks in Death Valley National Park (California, USA).

Geologist standing next to shoreface deposits in New Mexico
Mineral-bearing shoreface deposits in the Upper Cretaceous Trinidad Sandstone
Mineral-bearing shoreface deposits in the Upper Cretaceous Trinidad Sandstone
Mineral-bearing shoreface deposits in the Upper Cretaceous Trinidad Sandstone

Research Geologist Marieke Dechesne investigates heavy mineral-bearing shoreface deposits in the Upper Cretaceous Trinidad Sandstone (Raton Basin, New Mexico, USA).

Landscape photo with Joshua tree in foreground
Joshua trees near Las Vegas
Joshua trees near Las Vegas
Joshua trees near Las Vegas

Joshua trees (Yucca brevifolia) grow on middle Cenozoic sedimentary rocks of the Las Vegas region (southern Nevada, USA).  

Joshua trees (Yucca brevifolia) grow on middle Cenozoic sedimentary rocks of the Las Vegas region (southern Nevada, USA).  

Geologists  inspect young aeolian deposits of the San Juan River corridor in Bluff, Utah
Aeolian deposits of the San Juan River corridor
Aeolian deposits of the San Juan River corridor
Aeolian deposits of the San Juan River corridor

Intermountain West Project members Adam Hudson and Michael Frothingham inspect young aeolian deposits of the San Juan River corridor (Bluff, Utah, USA). 

Intermountain West Project members Adam Hudson and Michael Frothingham inspect young aeolian deposits of the San Juan River corridor (Bluff, Utah, USA). 

segmented sediment core from Lake Lucille in Alaska, split into 9 columns, numbered D2 through D10
Sediment core photography
Sediment core photography
Sediment core photography

Photography of split sediment cores is calibrated for color/light. This example is from Lake Lucille, Alaska.

Photography of split sediment cores is calibrated for color/light. This example is from Lake Lucille, Alaska.

Photo of footprints found in White Sands National Park
Footprints found in White Sands National Park
Footprints found in White Sands National Park
Footprints found in White Sands National Park

Footprints found in White Sands National Park were dated to the Last Glacial Maximum by USGS Research Geologists Kathleen Springer and Jeff Pigati.

Footprints found in White Sands National Park were dated to the Last Glacial Maximum by USGS Research Geologists Kathleen Springer and Jeff Pigati.

Photograph showing red-brown buttes of sedimentary rocks incised by the sediment-rich brown water of the Colorado River.
Grand_Canyon_20230908_Brennan.jpg
Grand_Canyon_20230908_Brennan.jpg
Drone image captured during almond field mapping in the Central Valley of California
Drone image captured during almond field mapping in the Central Valley of California
Drone image captured during almond field mapping in the Central Valley of California
Drone image captured during almond field mapping in the Central Valley of California

In August 2023, the USGS National Uncrewed Systems Office (NUSO) participated in a collaborative field campaign to collect remote sensing data over agricultural crop fields in California's Central Valley. Hyperspectral satellites were commissioned in coordination with hyperspectral UAS flights at an altitude of 300 feet above ground level.

In August 2023, the USGS National Uncrewed Systems Office (NUSO) participated in a collaborative field campaign to collect remote sensing data over agricultural crop fields in California's Central Valley. Hyperspectral satellites were commissioned in coordination with hyperspectral UAS flights at an altitude of 300 feet above ground level.

Dense point cloud generated using UAS photogrammetric techniques based on imagery acquired at the Alamosa NWR
Dense point cloud generated using UAS photogrammetric techniques based on imagery acquired at the Alamosa NWR
Dense point cloud generated using UAS photogrammetric techniques based on imagery acquired at the Alamosa NWR
Boardwalk through the Bonanza Creek Long-Term Ecological Research Site near Fairbanks, Alaska
Boardwalk through the Bonanza Creek Long-Term Ecological Research Site near Fairbanks, Alaska
Boardwalk through the Bonanza Creek Long-Term Ecological Research Site near Fairbanks, Alaska
Boardwalk through the Bonanza Creek Long-Term Ecological Research Site near Fairbanks, Alaska

Boardwalk through the Bonanza Creek Long-Term Ecological Research Site near Fairbanks, Alaska

In August 2023 the NUSO flew UAS equipped with custom methane-detecting sensors over Interior Alaska to support USGS and U.S. Environmental Protection Agency (EPA) Office of Research and Development research into low-cost ways to measure methane emissions.

Boardwalk through the Bonanza Creek Long-Term Ecological Research Site near Fairbanks, Alaska

In August 2023 the NUSO flew UAS equipped with custom methane-detecting sensors over Interior Alaska to support USGS and U.S. Environmental Protection Agency (EPA) Office of Research and Development research into low-cost ways to measure methane emissions.

Providing shade to a remote pilot flying a UAS over crops in California
Providing shade to a remote pilot flying a UAS over crops in California
Providing shade to a remote pilot flying a UAS over crops in California
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