If you're in Austin and interested:
Peter Cook is the 2009 Darcy lecturer and has done work with isotopes, fractured rock hydrology, recharge, paleoclimate, and lots of other topics. \ You can find some of his papers here: http://scholar.google.com/scholar?q=pg+cook&hl=en&lr=&start=10&sa=N Info on his tech talk: Speakers: Peter Cook, National Ground Water Association’s 2009 Henry Darcy Distinguished Lecturer Topics: Environmental Tracers in Modern Hydrogeology: Reducing Uncertainty in Ground Water Flow Estimation Series/Event: DGS Technical Session Date & Time: Tuesday, 4/28, 3:45-4:45 pm Location JGB 2.324 (Boyd Auditorium) University of Texas