Along the coast of the Huon Peninsula, in Papua New Guinea,…

Along the coast of the Huon Peninsula, in Papua New Guinea, coral reef benches currently occupy an elevation 400 meters above modern sea level.  These reef benches have been dated with Uranium-Thorium methods to be 120 kyr old.  What is the uplift rate of this part of the Huon Peninsula?

Shown in the diagram on the right is an offset stream system…

Shown in the diagram on the right is an offset stream system. On the upper side of the diagram is a stream flowing down the page, currently ponded by a RLSS fault, and on the lower portion of the diagram, are 3 beheaded streams with streambed sediment ages shown as 300, 200, and 100 years old.  Given the distances between the beheaded streams, shown, what is the history of slip rates?