New insights into deformation mechanisms in the gravitationally driven Niger Delta deep-water fold and thrust belt (Record no. 177385)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02289nab a2200205 4500 |
| 008 - CÓDIGOS DE INFORMACIÓN DE LONGITUD FIJA - INFORMACIÓN GENERAL | |
| Campo de control de longitud fija | 260224s2010 xxu |
| 245 00 - TITULO | |
| Título | New insights into deformation mechanisms in the gravitationally driven Niger Delta deep-water fold and thrust belt |
| 260 ## - PUBLICACION, DISTRIBUCION, ETC | |
| Lugar de publicación, distribución, etc. | |
| Nombre de publicador, distribuidor, etc. | |
| Fecha de publicación, distribución, etc. | sep. 2010 |
| 270 ## - FECHA DE CARGA | |
| Fecha de carga | 13/10/2010 ; 13/10/2010 |
| 300 ## - DESCRIPCION FISICA | |
| Otra extensión | 24 p. ; 1401-1424 |
| 520 ## - RESUMEN, ETC | |
| Resumen | Transcripción del resumen del autor. We use two- and three-dimensional seismic reflection data from the deep-water Niger Delta fold and thrust belt to document evidence for two, discrete, postfaulting deformation mechanisms. An early phase of thrust-propagation folding is followed by folding caused by thickness changes within the basal shale detachment unit. The later phase of folding is caused by a lateral redistribution of the strata within the basal detachment unit. This example of late deformation occurred over a 4–5-m.y. period as a result of the displacement of approximately 590 km3 (370 mi3) of the underlying strata within the detachment unit. In another deformation event in the basal detachment unit, about 160 km3 (100 mi3) moved, laterally creating a synform in the overburden and parallel onlap fill, indicative of the relatively rapid creation of accommodation space. On the basis of seismic reflection data from the delta and a consideration of the volumes and rates of movement of sedimentary rock, we conclude that the poorly imaged succession commonly referred to as mobile shale cannot deform solely by ductile mechanisms as interpretations of shale tectonic provinces have commonly suggested but instead by brittle processes that involve thickening by thrust faulting and subseismic accommodation structures. Processes such as liquefaction, where a complete loss of shear strength is observed, had a minimal function. Therefore, the term "mobile shale" in this setting is widely exaggerated. An awareness of postfaulting deformation mechanisms will be important for the successful exploration of gravitationally driven fold and thrust belts. |
| 581 ## - ESTADO DE COLECCIÓN | |
| Estado de colección | 9 |
| 773 0# - CORRECCIÓN | |
| Título | AAPG Bulletin |
| Partes relacionadas | 94 |
| 942 ## - DESC. DE MATERIAL | |
| Tipo de item KOHA | Artículo de Revista |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Maloney, Dominic |
| 9 (RLIN) | 47075 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Davies, Richard |
| 9 (RLIN) | 26257 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Imber, Jonathan |
| 9 (RLIN) | 47076 |
| Biblioteca propietaria | Biblioteca actual | Fecha de adquisición | Inventario | Total de préstamos | Inventario | Fecha de carga | Tipo de item KOHA |
|---|---|---|---|---|---|---|---|
| Biblioteca Alejandro Angel Bulgheroni | Biblioteca Alejandro Angel Bulgheroni | 05/03/2026 | 200049325 | 200049325 | 05/03/2026 | Artículo de Revista |
