Florence Bascom Geoscience Center

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Image of an outcrop of quartzite within the Roanoke Rapids terrane near Coleman Lake.
July 31, 2018

Outcrop of Quartzite Within the Roanoke Rapids

An outcrop of quartzite within the Roanoke Rapids terrane near Coleman Lake.  Laser ablation inductively coupled plasma mass spectrometry U-Pb geochronology on detrital zircon grains within this unit (conducted by the USGS LA-ICPMS Lab in Denver) will provide critical and precise geochronologic age control as a geologic framework model is developed and compiled for the

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Image of an outcrop of blue quartz-bearing granite within the Roanoke Rapids terrane.
July 31, 2018

Outcrop of Blue Quartz-Bearing Granite, Roanoke Rapids

An outcrop of blue quartz-bearing granite within the Roanoke Rapids terrane.  Sensitive high-resolution ion microprobe U-Pb geochronology will precisely determine the age of this rock (conducted by the USGS-Stanford SHRIMP Lab in Menlo Park) and will provide critical geochronologic age control as a geologic framework model is developed and complied for the easternmost

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A lab technician holds up a pollen slide to a white piece of paper
June 15, 2018

Slide of Pollen, Pollen Laboratory

A lab technician holds up the finished product after processing: an almost pure slide of pollen.

A lab technician takes sample weights before drying them in the oven
June 15, 2018

Weighing Sediment Samples from the Great Dismal Swamp, 2018

In the sample preperation room, a lab technician weighs sediments samples before placing them in a warming oven to dry.

A image of the acetolysis set up in a fume hood
June 15, 2018

Acetolysis Set-Up, Pollen Laboratory

Seen in this image is the acetolysis set up. Acetolysis is used to remove the genetic material from inside the pollen, which allows the scientists to better identify and count the pollen.

An image of pollen under a microscope
June 15, 2018

Pollen Under a Microscope

This image was taken through the eyepiece of a microscope. Pollen is mixed in with a few larger pieces of organic material.

Scientists look at a pollen grain using an SEM
June 6, 2018

SEM Laboratory

Scientists look at a pollen palynomorph using a scanning electron microscope (SEM).

Picture of trees within and along the edges of Lake Drummond.
May 9, 2018

Great Dismal Swamp, Lake Drummond

Photograph of Lake Drummond, which is located within the Great Dismal Swamp in Virginia. USGS scientists recently collected peat and lake core samples from the swamp to help reconstruct natural environmental conditions over the past 12,000 years.

This project will help managers understand how this system has changed in order to better manage and restore it.

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Scientists collecting sediment core samples from Lake Drummond, Great Dismal Swamp.
May 9, 2018

Coring on Lake Drummond

Michael Toomey, Jessica Rodysill, and Tom Sheehan collect sediment cores from Lake Drummond, located within the Great Dismal Swamp. The cores were obtained using a vibracore, which was mounted on a platform between two canoes. 

Scientists collect sediment cores from Lake Drummond, located within the Great Dismal Swamp
May 9, 2018

Collecting Cores at Lake Drummond, Great Dismal Swamp

Scientists collect cores on Lake Drummond, located within the Great Dismal Swamp.

Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

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Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

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