Morgan, Julia K. (1996): Clay mineral fabrics from the Iberia abyssal plain; recorders of postrift consolidation and deformation?

Leg/Site/Hole:
ODP 149
ODP 149 897
ODP 149 898
ODP 149 899
Identifier:
2007-088100
georefid

10.2973/odp.proc.sr.149.233.1996
doi

Creator:
Morgan, Julia K.
University of Washington, Department of Geological Sciences, Seattle, WA, United States
author

Identification:
Clay mineral fabrics from the Iberia abyssal plain; recorders of postrift consolidation and deformation?
1996
In: Whitmarsh, Robert B., Sawyer, Dale S., Klaus, Adam, Beslier, Marie-Odile, Collins, Eric S., Comas, Maria Carmen, Cornen, Guy, de Kaenel, Eric, Pinheiro, Luis de Menezes, Gervais, Elisabeth, Gibson, Ian L., Harry, Dennis L., Hobart, Michael A., Kanamatsu, Toshiya, Krawcyzk, Charlotte M., Liu, Li, Lofts, Jeremy C., Marsaglia, Kathleen M., Meyers, Philip A., Milkert, Doris, Milliken, Kitty L., Morgan, Julia K., Ramirez, Pedro, Seifert, Karl E., Shaw, Timothy J., Wilson, Chris, Yin, Chuan, Zhao, Xixi, Proceedings of the Ocean Drilling Program; scientific results, Iberia abyssal plain; covering Leg 149 of the cruises of the Drilling Vessel JOIDES Resolution; Balboa Harbor, Panama, to Lisbon, Portugal; sites 897-901, 10 March-25 May 1993
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
149
353-361
Clay mineral fabrics in clay-rich sediments, collected from drill cores at Sites 897, 898, and 899 in the Iberia Abyssal Plain, were measured using the method of X-ray texture goniometry, to examine the relationships between fabric, strain, and physical properties, and to look for evidence for fabric changes induced by horizontal shortening of the abyssal sediments during Miocene compression. No evidence was found to support the idea that the sediments experienced horizontal ductile strain during their residence, although there was evidence for increasing fabric magnitude with depth, associated with burial and dewatering. A crude, approximately linear, relationship is inferred between discrete water contents and apparent volumetric strains derived from the measured fabric, which may correlate with fabric-strain relationships observed in other settings.
Coverage:Geographic coordinates:
North:40.5019
West:-12.2847East: -12.0725
South:40.4106

Structural geology; Atlantic Ocean; burial; Cenozoic; clay minerals; compression tectonics; deformation; Europe; fabric; Iberian abyssal plain; Iberian Peninsula; Leg 149; Miocene; Neogene; North Atlantic; Northeast Atlantic; Ocean Drilling Program; ODP Site 897; ODP Site 898; ODP Site 899; physical properties; plate tectonics; rifting; sheet silicates; silicates; Southern Europe; stress; structural analysis; syntectonic processes; tectonics; Tertiary; X-ray data;

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