Detection of Hydraulically Conductive Fractures
When There Is No Outcrop
John Fountain, Ph.D.
SUNY Buffalo
The rock fracture group at UB has developed a methodology that combines digital fracture analysis in sparse outcrops with soil gas analyses to detect buried faults and fractures. The results of six New York studies have shown that fractures that are vertically continuous through units of different lithologies are characterized by much larger soil gas anomalies. Structural studies by Bob Jacobi and his students have determined that these fracture systems are characterized by high density of fractures over a narrow zone and are related to faults at depth – although no offset may be apparent at the surface. Such fractures typically extend through unconsolidated deposits above the bedrock, suggesting that they are hydraulically important. The common continuation of the fractures through the unconsolidated sediments suggests that many of the local fault systems have been reactivated since the last glaciation. Our technique allows rapid detection of such fracture zones.
Thursday, January 11th
Cocktail at 5:30 p.m. in the Regatta Bar
Dinner at 6:30 p.m., talk to follow
Cost is $25.00
Wyndham Syracuse (315-432-0200)
Reservations are due by Friday, January 5th
Call or e-mail Sarah McCulloch (607-836-4400 or
sarah@geologic.net)If reservations are made and not cancelled by 1/5/2001 you will be charged for the dinner because CNYAPG must pay for each reservation made.
Directions:
From 690 take the Thompson Road North exit. Follow Thompson Road north to the Carrier Circle. Take Route 298 East. Go ~1/2 mile to the first light, Wyndham is on the left.
From the Thruway take exit 35 (East Syracuse and Route 298). After toll both go around the traffic circle to Route 298 East. Go ~1/2 mile to the first light, Wyndham is on the left.