Aerial of eddy in channel near vent D
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Aerial of eddy in channel near vent D
Aerial of eddy in channel near vent D
Ray Copper Mine
Production level in the Ray porphyry copper mine, AZ.
Production level in the Ray porphyry copper mine, AZ.
Monsoon-Rain Flow in an Ephemeral Channel near Sierra Vista, Arizona
As part of the assessment of the binational San Pedro aquifer, the effects of urbanization on runoff in ephemeral streams was studied. Ephemeral streams are those that flow in response to precipitation. Runoff in tributaries to the San Pedro River is important in understanding the water budget of the river.
As part of the assessment of the binational San Pedro aquifer, the effects of urbanization on runoff in ephemeral streams was studied. Ephemeral streams are those that flow in response to precipitation. Runoff in tributaries to the San Pedro River is important in understanding the water budget of the river.
PubTalk 8/2007 — Dark Holes in Muir's "Range of Light"
Insights from southern Sierra Nevada caves and karst
By John C. Tinsley, Geologist
Insights from southern Sierra Nevada caves and karst
By John C. Tinsley, Geologist
Cliff Dwellings
Cliff dwelling known as Square Tower House in Mesa Verde National Park. (Scanned From Negative)
Cliff dwelling known as Square Tower House in Mesa Verde National Park. (Scanned From Negative)
Endocrine Disruption: Sex-Changing Fish and More
We talk with Carl Schreck, USGS biologist, on the effects humans are having on aquatic life by introducing chemicals and waste products into lakes and streams. How do these contaminants affect aquatic species' reproductive systems, metabolism, mood, growth development, and more? Listen to find out.
We talk with Carl Schreck, USGS biologist, on the effects humans are having on aquatic life by introducing chemicals and waste products into lakes and streams. How do these contaminants affect aquatic species' reproductive systems, metabolism, mood, growth development, and more? Listen to find out.
Cliff Dwellings
Cliff dwelling known as Square Tower House in Mesa Verde National Park. (Scanned From Negative)
Cliff dwelling known as Square Tower House in Mesa Verde National Park. (Scanned From Negative)
Collecting Rice Sample
USGS researcher, Dr. Windham-Myers, collecting a white rice sample after 2 months of growth.
USGS researcher, Dr. Windham-Myers, collecting a white rice sample after 2 months of growth.
Wildlife and Agricultural Wetlands
A diversity of birds forage for small fish and invertebrates on fallow fields throughout the year.
A diversity of birds forage for small fish and invertebrates on fallow fields throughout the year.
Passion Flower Vine (Passiflora sp.)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
Passion flower vine (Passiflora sp.)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
Passion Flower Vine (Passiflora sp.)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
Passion Flower Vine (Passiflora sp.)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
Passion Flower Vine (Passiflora sp.)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
Passion Flower Vine (Passiflora sp.)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
The leaves, buds, tendrils, and flowers of a passion flower vine (Passiflora). (Scanned From Negative)
Snake Cactus (Genus Unidentified)
Snake cactus that has wrapped itself about the trunk of a Sabal palm on the Gulf coast of Florida. (Scanned From Negative)
Snake cactus that has wrapped itself about the trunk of a Sabal palm on the Gulf coast of Florida. (Scanned From Negative)
Frangipani (Plumeria sp.)
The leaves and flowers of the popular tropical tree, Plumeria. This specimen in Florida has been employed as a landscape ornamental. (Scanned From Negative)
The leaves and flowers of the popular tropical tree, Plumeria. This specimen in Florida has been employed as a landscape ornamental. (Scanned From Negative)
Gumbo Limbo Tree
One of the largest living gumbo limbo trees (Bursera simaruba).
One of the largest living gumbo limbo trees (Bursera simaruba).
Morning-Glory (Ipomoea Sp.)
Leaves and purple flowers of a Morning-glory as it colonizes the sands of a coastal dune on a Gulf coast barrier island. (Scanned From Negative)
Leaves and purple flowers of a Morning-glory as it colonizes the sands of a coastal dune on a Gulf coast barrier island. (Scanned From Negative)
Morning-Glory (Ipomoea Sp.)
Leaves and purple flowers of a railroad vine (beach morning-glory) as it colonizes the sands of a coastal dune on a Gulf coast barrier island
Leaves and purple flowers of a railroad vine (beach morning-glory) as it colonizes the sands of a coastal dune on a Gulf coast barrier island