Indiana University Bloomington

Research

OIINK Ozarks, Illinois, Indiana, Kentucky: Unraveling the secrets of North America’s continental interior. Three university research teams from Indiana University, Purdue University, and the University of Illinois—together with the Indiana and Illinois state geological surveys—have teamed up to take on an ambitious project to help understand earthquakes and the geological structures that trigger them. This new research project, supported by the National Science Foundation, is playfully dubbed “OIINK” after its principal study area—the Ozarks, Illinois, Indiana, and Kentucky. The project involves the operation of a large seismic array centered over the Illinois Basin. This new project is being conducted in coordination with the deployment of a nationwide array of seismometers called the USArray (www.iris.edu/USArray/). USArray is a component of a large experimental program called EarthScope (www.earthscope.org), a national scientific experiment directed at understanding the geologic processes that create earthquakes and their relation to continental-scale geologic structures.

Direct imaging with teleseismic wavefields aims to utilize new broadband seismic arrays to provide higher resolution images of the earth. (Pavlis)

Southeast Caribbean Plate Margin Multidisciplinary study of the boundary between the South American and Caribbean plates. Work is focused on a major broadband seismic array experiment centered on Venezuela. (Pavlis)

St. Elias Erosion and Tectonics Project (STEEP) The STEEP project is a multidisciplinary study of tectonics of southeastern Alaska. A focus of the project is understanding possible links between tectonics and glacial erosion. (Pavlis)

Seismic Hazards in Indiana. Current project to study seismic hazards of the state of Indiana through analysis of modern digital seismic data. (Pavlis, Hamburger)

Earthquake location and local earthquake tomography. Local earthquake tomography and the inseparable problem of earthquake location. (Pavlis)

Long-term slip history of the Altyn Tagh fault (China) using provenance of sediment in Cenozoic basins as piercing points (Ritts)

Structural and stratigraphic evolution of the Mesozoic northern Ordos basin, north-central China (Ritts)

Sedimentary architecture and tectonic evolution of Qaidam basin and Hexi Corridor

Cenozoic strike-slip faulting in the Alxa block, China: northeast extension of the Altyn Tagh fault (Ritts)

Stable C-O isotopic records of Cretaceous-Quaternary strata, NW China and Tibet

Architecture of Lower Cretaceous extensional basins, northern and northeast China (Ritts)

Earthquakes and crustal deformation at Pinatubo and Taal volcanoes (Hamburger)

Seismicity and crustal deformation in the U.S. midcontinent (Wabash Valley Seismic Zone of southern Indiana and Illinois; (Hamburger)

Regional Crustal Deformation in Philippines (Hamburger)

Postseismic Deformation. Using GPS data and mechanical models to examine postseismic deformation processes follwing large earthquakes including the 2002 Denali, Alaska Earthquake and the 2004 Parkfield Earthquake. (K. Johnson)

Earthquake cycle deformation. This research involves the development of mechanical viscoelastic earthquake cycle models of interseismic deformation to GPS data for lithosphere rheology and fault slip rates in Taiwan and California (K. Johnson)

Fault Friction. Using GPS measurements of rapid deformation following earthquakes to infer the spatial distribution of frictional properties of faults. (K. Johnson)

Analysis of Suspect Terranes (Wintsch)

Low Grade Rocks and Slaty Cleavage (Wintsch)

Mylonites and Fault Rocks (Wintsch)

Stress within the lithosphere during subduction. (Douglas)

Brittle and ductile deformation of the lithosphere (Douglas)

Development of multimedia tools in geoscience education (Dunning)