Mapping the Moho in the Iberian Mediterranean Margin by Multicoverage Processing and Merging of Wide-Angle and Near-Vertical Reflection Data

Vidal, N.; Gallart, J.; Dañobeitia, J. J.; Díaz, Jordi

doi:10.1007/978-94-011-0043-4_16

Cited by 7 publications

(7 citation statements)

References 21 publications

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“…The map of crustal thickness ( Fig. 10) has been constructed from the CDP (Common Depth Point) and COP (Constant Offset Profiling) interpretations of the Valsis lines constrained by ESP (Expanded Spread Profiling) interpretations ( Watts et al ., 1990 ; Maillard et al ., 1992 ; Mauffret et al ., 1992 ; Torne et al ., 1992 ; Collier et al ., 1994 ; Gallart et al ., 1994 ; Vidal et al ., 1995 ). We also studied some industrial lines that show a reflection Moho that can be correlated with one of the Valsis lines.…”

Section: Crustal Structurementioning

confidence: 99%

“…Onshore as well as offshore, this study has been combined with other refraction experiments ( Zeyen et al ., 1985 ; Banda et al ., 1980 ; Martin & Surinach, 1988; Danobeitia et al ., 1990 ; Gallart et al ., 1990 ). The Spanish ESCI program collected normal incidence seismic reflection data on the Iberian margin which also provides new insight into the deep structure of the area by multicoverage processing and a combination of wide‐angle and near‐vertical reflection data ( Vidal et al ., 1995 ; Gallart et al ., 1995 ).…”

Section: Crustal Structurementioning

confidence: 99%

“…In the Valencia Trough, the reflective lower crust is a layer characterized by subhorizontal and sometimes tilted reflectors, alternating with transparent zones ( Fig. 11a; Vidal et al ., 1995 ). This layer contains lateral variations in its thickness and in the dip of the reflectors.…”

Section: Crustal Structurementioning

confidence: 99%

“…However, the ESCI Valencia wide‐angle reflection data ( Vidal et al ., 1995 ) in the area show clear reflections coming from the base of the crust beneath the Balearic promontory. The lack of a clear reflection pattern in the transition offshore from the Balearic Islands could also be due to the presence of numerous highs and lows in the basement structure (probably volcanoes).…”

Section: Crustal Structurementioning

confidence: 99%

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Crustal structure and riftogenesis of the Valencia Trough (north‐western Mediterranean Sea)

Mauffret¹

1999

Basin Research

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The Valencia Trough is a rift formed during the late Oligocene -early Miocene opening of the western Mediterranean Sea. In this paper, we focus on the crustal structure and on the deep structure of the basin which is hard to delineate because of the widespread volcanism that conceals part of the basement. This work is the result of the study of a dense network of seismic profiling surveys and exploratory wells made in the region. The structure of the deep basement reveals the importance of transfer fracture zones which represent steps in the deepening of the basin. The thinning of the crust follows the basement deepening and we find the same partitioning of structural blocks at the crustal level. Transfer faults also represent limits in the thinning of the crust and each compartment thus delineated has a different thinning and different extensional ratios. Such a discrepancy between the thinning of the upper crust and the thinning of the lower crust may be common in many other rift zones, but is seldom as well imaged as in this study of the Valencia Trough. The transfer zones are related to extensional processes but a simple shear opening is envisaged to explain the discrepancies between thinning and extension and the asymmetry of the margins. The more efficient thinning in the lower crust can be explained by a thermal anomaly in accordance with the recent evolution of the trough. The steady thinning of the margins is discussed in terms of a marginal basin in a compressional context. strike and across the basin, and the geometry of the

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Section: Crustal Structurementioning

confidence: 99%

Section: Crustal Structurementioning

confidence: 99%

Section: Crustal Structurementioning

confidence: 99%

Section: Crustal Structurementioning

confidence: 99%

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Crustal structure and riftogenesis of the Valencia Trough (north‐western Mediterranean Sea)

Mauffret¹

1999

Basin Research

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“…The second profile was collected as part of the STREAMERS/ESCI project and approximately parallels VALSIS 821 but is about 50 km to the west. This profile was collected with superior equipment for imaging deep structure, namely a 180 channel, 4.5 km streamer and 7118 cu inch airgun array (Vidal et al 1995). Neither of these profiles show any evidence for any SE-dipping reflectors in the lower crust or upper mantle.…”

Section: A T a P R O C E S S I N G A N D A S S E S S M E N T O F Thmentioning

confidence: 99%

Seismic-reflection constraints on lithospheric extension: pure versus simple shear

Collier¹,

Watts²

1997

Geophysical Journal International

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Contemporary tectonic stress in northeastern Iberia. New results from borehole breakout analysis

Jurado

Müller

1997

Tectonophysics

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Mapping the Moho in the Iberian Mediterranean Margin by Multicoverage Processing and Merging of Wide-Angle and Near-Vertical Reflection Data

Cited by 7 publications

References 21 publications

Crustal structure and riftogenesis of the Valencia Trough (north‐western Mediterranean Sea)

Crustal structure and riftogenesis of the Valencia Trough (north‐western Mediterranean Sea)

Seismic-reflection constraints on lithospheric extension: pure versus simple shear

Contemporary tectonic stress in northeastern Iberia. New results from borehole breakout analysis

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