Comment Policy:

[Sign states not to throw rocks.]I encourage and welcome your comments on all blog posts! I value feedback and want to engage all readers in discussion.

  • Please do keep your comments courteous and on-topic.
  • Please don’t promote services or products; non-commercial links relevant to the discussion (such as other science blogs) are encouraged.

Disclosure and Disclaimers:

The opinions expressed in this blog are my own and do not represent those of my current, past, or future employers or clients. My current work endeavors, employers, or clients are not the subject of my blogging.

This site is for informational purposes only; nothing on this site is intended to serve as professional geologic, geophysical, or hydrologic advice. Your use of this site does not create a consultant-client relationship between you and the author.


Unless stated otherwise, all text and images are copyrighted by C.B.Dawson. In most instances I  will be happy to share my work for non-commercial educational purposes: just please contact me first — I usually have high-quality original versions of the photos on this blog that I can share with teachers or other bloggers.