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New Ocean Basin Diagram

illustration of the upper layers of the earth showing the formation of a new ocean basin as the mid-ocean spreading center adds to the oceanic plate

Rift valleys formed as the thick continental crust (orange) ripped apart and thined. A narrow basin, with thin oceanic crust (black), developed as the two continental fragments split apart.

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Modified from “Parks and Plates: The Geology of our National Parks, Monuments and Seashores,” by Robert J. Lillie, New York, W. W. Norton and Company, 298 pp., 2005, www.amazon.com/dp/0134905172.

Public domain:Full Granting Rights

Image

Geologic Resources Division, Code: GRD

NPS.gov Collection

01/30/2020

01/30/2020

Public Can View

Thursday, January 30, 2020 12:50:24 PM

Thursday, January 30, 2020 12:50:24 PM

illustration new ocean basin@10x.jpg

Thursday, January 30, 2020 7:00:21 PM

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599.5 kB

2020-01-30T12:00:21-07:00

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