The subject of this paper is believed to be of interest to many geologists, and it is presented with the idea of initiating and promoting discussion among those interested. The writer does not presume to exhaust the subject, nor even to speak authoritatively on it. His own observations are here set down only as a contribution to the solution of an important and complex problem about which, so far as he is aware, but little is known.
The points to be touched on in this paper are (1) the structure of surface beds, (2) the structure of the sub-surface producing...
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
