Results 81 to 90 of about 217 (124)

Heat flow variability at the Costa Rica subduction zone as modeled by bottom-simulating reflector depths imaged in the CRISP 3D seismic survey

, 2012
text3D seismic reflection data were acquired by the R/V Langseth and used to extract heat flow information using bottom-simulating reflector (BSR) depths across the southern Costa Rica convergent margin.
Cavanaugh, Shannon Lynn
core  

Seismic quality factors across a bottom simulating reflector in the Makran Accretionary Prism, Arabian Sea

Marine and Petroleum Geology, 2011
The hydrate-bearing sediments above the bottom simulating reflector (BSR) are associated with low attenuation or high quality factor (Q), whereas underlying gas-bearing sediments exhibit high attenuation. Hence, estimation of Q can be important for qualifying whether a BSR is related to gas hydrates and free-gas.
Kalachand Sain
exaly   +3 more sources

Offshore Frontal Part of the Makran Accretionary Prism: The Chamak Survey (Pakistan)

, 2007
The Makran accretionary prism developed in the north-western part of the Indian Ocean as a consequence of the subduction of the Arabian Sea since Late Cretaceous times. It extends from southern Iran to the Baluchistan region of Pakistan where it joins the Chaman-Ornach-Nal left-lateral strike-slip fault systems to the north and the Owen Fracture Zone ...
Ellouz-Zimmermann, Nadine, Lallemant, Siegfried, Castilla, Raymi, Mouchot, Nicolas, Leturmy, Pascale, Battani, Anne, Buret, Christophe, Cherel, Louis, Desaubliaux, Guy, Deville, Eric, Ferrand, J., Lügcke, A., Mahieux, Geoffroy, Mascle, Georges, Mühr, P., Pierson-Wickmann, Anne-Catherine, Robion, Philippe, Schmitz, Julien, Danish, M., Hasany, S., Shahzad, A., Tabreez, A.   +21 more
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Morphotectonics domains and structural styles in the Makran accretionary prism, offshore Iran

Sedimentary Geology, 2007
Abstract The Makran accretionary prism is regarded as one of the most extensive subduction complex on Earth. It provides an ideal example of accretionary prism to study processes related to subduction at plate boundaries such as frontal accretion and underplating.
Ken Mcclay
exaly   +2 more sources

The brittle-ductile transition signature in accretionary prism, insight from thermomechanical modeling. Application to Makran

, 2022
<p>Long-term tectonics numerical modelling at accretionary margin scale is a powerful tool to retrieve the influence of many parameters such as the spatial variations of the frictional properties along a simplified interface and its feedback on the deformation.
Pajang, Sepideh, Le Pourhiet, Laetitia, Cubas, Nadaya, Khatib, Mohammad Mahdi, Heyhat, Mahmoudreza   +4 more
openaire   +3 more sources

Sediment dewatering in the Makran accretionary prism

Earth and Planetary Science Letters, 1985
Abstract Sediments within the Makran accretionary prism are considerably more compacted than the material entering the subduction zone due to the additional tectonic stresses resulting from plate convergence and accretionary processes. Tectonic compaction of the offscraped sediments has been documented by deriving in-situ porosities in the upper 4 km
Robert S White
exaly   +2 more sources

Appraisal of gas-hydrate/free-gas from VP/VS ratio in the Makran accretionary prism

Marine and Petroleum Geology, 2008
Existence of gas-hydrate in the marine sediments elevates both the P- and S-wave seismic velocities, whereas even a small amount of underlying free-gas decreases the P-wave velocity considerably and the S-wave velocity remains almost unaffected. Study of both P- and S-wave seismic velocities or their ratio (VP/VS) for the hydrate-bearing sediment ...
Maheswar Ojha, Kalachand Sain
openaire   +2 more sources

Large-scale sediment underplating in the Makran accretionary prism, southwest Pakistan

Geology, 1985
Field relations in the emergent part of the Makran accretionary prism show that a mid-Miocene to early Pliocene slope and shelf sedimentary sequence was deposited directly on abyssal-plain turbidites without any detectable stratigraphic or structural discordance.
J P Platt, J K Leggett
exaly   +2 more sources

Power‐Law Viscoelastic Flow of the Lower Accretionary Prism in the Makran Subduction Zone Following the 2013 Baluchistan Earthquake

Journal of Geophysical Research: Solid Earth, 2022
AbstractSubduction zone accretionary prisms are commonly modeled as elastic structures where permanent deformation is accommodated by faulting and folding of otherwise elastic materials, yet accretionary prisms may exhibit other deformation styles over relatively short time scales.
Guo Cheng, Shaoyang Li
exaly   +2 more sources

Evidence for a thick free gas layer beneath the bottom simulating reflector in the Makran accretionary prism

Marine Geology, 2000
Seismic reflection data from the Makran continental margin indicate the presence of a strong and widespread bottom simulating reflector (BSR). We apply a nonlinear full waveform inversion technique to multichannel reflection data from this area, to investigate the detailed velocity structure and hence the origin of the BSR.
Sain, K., Minshull, T.A., Singh, S.C., Hobbs, R.W.   +3 more
openaire   +3 more sources