Due to a planned power outage on Friday, 1/14, between 8am-1pm PST, some services may be impacted.
This article is from The Journal of Geology, Volume 30.
View more articles from The Journal of Geology.View this article on JSTOR.View this article's JSTOR metadata.
You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-30085036
For print-disabled users
on March 15, 2013