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Birthplace of the Reflection Seismograph

Oklahoma County
Location: on grounds of Belle Isle Metropolitan Library, Oklahoma City
Coordinates: 35.525897, -97.556988
Material: Granite
Sponsor(s): Geophysical Society of Oklahoma City
Topics: Early Statehood, 1907–1941; Petroleum

Field tests that confirmed the validity of the reflection seismography method of prospecting for oil were conducted near this spot on June 4, 1921. The shot has virtually echoed around the world. This monument was erected to commemorate the golden anniversary of the event.

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Oklahoma Historical Society
800 Nazih Zuhdi Drive
Oklahoma City, OK 73105
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