Western Coastal and Marine Geology
Coastal and Seafloor Mapping

Mapping Systems

Sampling: Core and Grab Samplers

A variety of coring and sampling devices provide sediment for texture analysis and stratigraphy that are used to map the distribution of surficial facies and help establish the chronology of tectonic activity and sedimentation.

Photo of NEL box corer on board ship.
Our NEL-style spade box corer is equipped with a bottom-trip camera and strobe.
Weight: 1500 lbs
Box size: 20 x 30 x 60 cm		 Photo of a box core
Sediment sample from NEL spade box corer, shown at right.

We derive environmental and geologic information
from cores with chronology control.

 

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U.S. Department of the Interior    U.S. Geological Survey    Western Coastal & Marine Geology
URL: http://walrus.wr.usgs.gov/mapping/sampling.html
maintained by Laura Zink Torresan
last modified 17 December 2006 (lzt)