What’s interesting about the Wharton Basin is that there isn’t much info on it. There was a huge quake 7.8 magnitude quake in 2000 which should have generated some interest from geologists for study.
http://adartonamap.wordpress.com/2012/02/03/the-wharton-basin/
PDF file. 8 pages. 2 pages of descriptive text. rest are maps. Photos of basin bottom are on page 8
http://www.deepseadrilling.org/22/volume/dsdp22_appendixI.pdf