The influence of rock uplift rate on the formation and preservation of individual marine terraces during multiple sea level stands

This is a Preprint and has not been peer reviewed. This is version 1 of this Preprint.

Downloads

Download Preprint

Supplementary Files
Authors

Luca Malatesta , Noah J. Finnegan , Kimberly L. Huppert , Emily I. Carreño 

Abstract

Marine terraces are a cornerstone for the study of paleo sea level and crustal deformation. Commonly, individual erosive marine terraces are attributed to unique sea level high-stands. This stems from early reasoning that erosive marine platforms could only be significantly widened at the beginning of an interglacial. However, this implies that wave erosion is insignificant during the vast majority of sea level history. Here, we postulate that the total duration of sea level occupation at a bedrock elevation is a proxy for the erosion potential. The total duration of sea level occupation (hence wave erosion) depends strongly on rock uplift rate. Certain rock uplift rates may promote the generation and preservation of particular terraces while others prevent it. The elevations and widths of terraces eroded during specific sea level stands may vary widely from site to site and depend on local rock uplift rate. This leads to potential misidentification of terraces if each terrace in a sequence is assumed to form uniquely at successive interglacial high stands and to reflect their elevations. Representing a proxy for the entire erosion potential of sea level history allows us to address creation/preservation biases at different rock uplift rates.

DOI

https://doi.org/10.31223/X5031T

Subjects

Climate, Geology, Geomorphology

Keywords

wave erosion, coastal geology, rock uplift

Dates

Published: 2021-05-13 11:23

Last Updated: 2021-05-13 18:23

License

CC BY Attribution 4.0 International

Additional Metadata

Conflict of interest statement:
None

Add a Comment

You must log in to post a comment.


Comments

There are no comments or no comments have been made public for this article.