Harry Hess Is Coming to Kirtland!

By: Hailey Johnson

About Harry Hess

Harry studies the ocean floor and what the ocean floor is made up of. Harry is also an expert in seafloor spreading. Seafloor spreading is the formation of new areas of oceanic crust, which occurs through the up welling of magma at mid ocean ridges and it's subsequent outward movement on either side. One of his most important contributions to science was the concept of seafloor spreading. He came up with the theory of the continental drift theory. As a professor at Princeton he continued his work on mountain ranges and island arcs. He ended up developing a unifying hypothesis that tied together the creation of island arcs with the presence of gravity anomalies and magnetic belts of serpentine which is a rock which is formed by the crystallization of magma. Harry was also a reserve officer in the Navy. While Harry was on a boat he mapped out a large part of the Pacific Ocean. He discovered that the underwater flat-topped sea mounts he named guyots. After the war ended he continued to study guyots and mid ocean ranges.

Here is a video about seafloor spreading: https://www.youtube.com/watch?v=k-_Z6p5cjKg

Harry Hess is Comeing to Kirtland

Thursday, Dec. 19th 1963 at 2:15pm

Kirtland Middle School

This will take place in the Kirtland Middle School gym.

December 19, 1963

Harry Hess is coming to our school! He is going to talk to us about the Continental Drift Theory and all about the ocean floor. The assembly will start at 1:30 p.m. through 2:15 pm. this Friday, in the gym.