Samples and cores from the USGS Woods Hole Coastal and Marine Science Center: interactive map

Sample types

Cores are cylindrical samples of unconsolidated sediment or rock, collected vertically through the surface of the sea floor or lake floor and into the substrate beneath.

Grabs are samples consisting of the unconsolidated substrate found on the surface of the sea or lake bed.

Dredges are rock samples plucked from the sea or lake bed by devices that act as scoops (dredges) towed behind research vessels.

Slides may be microfossil slides (foraminifera and diatoms picked by paleontologists or geologists), thin sections of geological samples, or smear slides of unconsolidated sediment.

Subsamples are discrete samples taken from other samples (cores, grabs, and dredges).

Other samples are those that don't fall into one of the other categories (cores, dredges, grabs, slides, subsamples). These samples might include coral skeletons, water samples and peel samples.

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Click the map to show data near to the point you clicked.

Samples are listed in the sidebar.

Click the sample ID to see more details about it.

Click the field activity to learn about it.

To select data from a rectangular area, hold the Ctrl key and drag the pointer.

Sample types
	Cores
	Grabs
	Dredges
	Slides
	Subsamples
	Other
Geographic reference
	Oceans
	OpenStreetMap
	Shaded relief
	US States
	US Counties
	US county names

Platform
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Activity
Sample type
Device
Date collected
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WHCMSC samples

How to use this map

Sample types

Show data layers

Search for samples

Find geographic areas

Explore the data

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Geographic areas

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