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Active Fault-Related Folding: Structural Evolution, Geomorphologic Expression, Paleoseismology, and Seismic Hazards

1 May 2007
This special section focuses on the structural development and evolution of folds above active thrust faults, and the use of such data to elucidate the relationship between faults and folds, the rates of deformation, and the seismic hazards posed by these structures. This research is highly interdisciplinary, including everything from analysis of seismic reflection data, to cosmogenic radionuclide dating of deformed geomorphic surfaces, to borehole excavations of young growth strata, to comparisons of structural data with various models of fold formation (discrete element models, analog models, kinematic models). These issues are of great societal, as well as scientific, importance in light of the recent occurrence of several large, damaging thrust earthquakes (1994 Northridge, 1999 Taiwan, 2005 Kashmir).

Seventy-fifth Anniversary Papers

10 December 1995

Tectonics and Topography

10 October 1994
This special section on tectonics and topography developed from an American Geophysical Union Chapman Conference convened in the late summer of 1992 in Snowbird, Utah. The intent of the gathering was to assemble a diverse group of Earth scientists working on ultimately the same problem: the interaction between crustal and surficial processes or, euphemistically, tectonics and topography.

Northern Chugach Mountains-Southern Copper River Basin Segment of the Alaskan Transect

10 November 1989
This special section of the Journal of Geophysical Research is the first of a two-part collection of papers addressing the nature and evolution of the lithosphere in southern Alaska. Collectively, these papers document the important role of subduction-related accretion in continental growth, a process which continues today in southern Alaska.

Yukon-Koyukuk Basin and Its Borderlands, Western Alaska

10 November 1989
This special section of the Journal of Geophysical Research is devoted to a study of the origin and evolution of the Yukon-Koyukuk basin and its borderlands in western Alaska. The Yukon-Koyukuk basin, which is variously referred to as the "Yukon-Koyukuk geosyncline," the "Koyukuk basin," or the "Yukon-Koyukuk province," is a large, wedge- shaped tract of Jurassic and Cretaceous sedimentary and igneous rocks that extends over much of western Alaska.

Rio Grande Rift

10 May 1986
These volumes are a manifestation of the research activity which lead to the formation of the Rio Grande rift consortium whose purpose is to foster rift-related research and communication. This organization has sponsored several special sessions at geological and geophysical meetings and has generally increased the awareness of this important feature.

Accretion Tectonics

10 May 1982
Abundant geological and geophysical data demonstrate tectonic complexities on land far greater than those on the ocean floor. In the oceans, geological features are well explained by plate tectonics.

Magmatism and Extension

10 June 1995
The relationship between magmatism and the formation of continental rift zones is the subject of much controversy. In particular, the cause and effect relationships between magmatism and extension and the mode of generation of magma during the process of extension are still hotly debated.

California-Arizona Crustal Transect

10 January 1990
Recent research along the east half of a crustal geotraverse across the Cordillera from the Southern California Borderland to the Colorado Plateaus in Arizona was the subject of a workshop held in Flagstaff, Arizona, in May 1988. The diversity of earth science disciplines brought together by this stimulating CACTIS (California-Arizona Crustal Transect - Interim Synthesis) workshop offered new insights toward an understanding of the crustal structure and evolution of this region.