Results 91 to 100 of about 652 (123)
Some of the next articles are maybe not open access.
Gas hydrates acting as cap rock to fluid discharge in the Makran accretionary prism?
Geological Society, London, Special Publications, 2002Abstract We present a numerical model of the geothermal field of the Makran accretionary prism and of the slab being subducted below it. Calculated heat flow density values for the sea floor of the abyssal plain and the shelf slope are compared with in situ measured and bottom simulating reflector (BSR ...
G. Delisle, U. Berner
openaire +1 more source
Geo-Marine Letters, 2021
Submarine pockmarks are residual negative geomorphologic features on the seafloor, which are generally considered to be related to fluid escape. In this paper, the geomorphological characteristics and genetic mechanism of pockmarks in the Makran accretionary prism are analyzed by using multi-beam bathymetric data and multichannel seismic data.
Zhen Zhang +11 more
openaire +1 more source
Submarine pockmarks are residual negative geomorphologic features on the seafloor, which are generally considered to be related to fluid escape. In this paper, the geomorphological characteristics and genetic mechanism of pockmarks in the Makran accretionary prism are analyzed by using multi-beam bathymetric data and multichannel seismic data.
Zhen Zhang +11 more
openaire +1 more source
Comparison of measured and BSR-derived heat flow values, Makran accretionary prism, Pakistan
Marine Geology, 2000Abstract During the German research cruise SO-124 on RV Sonne (fall 1997) on the Makran accretionary wedge off Pakistan, geophysical investigations were carried out to study the thermal regime at a gas hydrate bearing sediment in a tectonically deformed accretionary wedge.
N Kaul, A Rosenberger, H Villinger
openaire +1 more source
Offshore Frontal Part of the Makran Accretionary Prism: The Chamak Survey (Pakistan)
2007The 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 +21 more
openaire +2 more sources
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 +4 more
openaire +2 more sources
<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 +4 more
openaire +2 more sources
Appraisal of gas-hydrate/free-gas from VP/VS ratio in the Makran accretionary prism
Marine and Petroleum Geology, 2008Existence 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 +1 more source
2007
This paper discusses the geodynamic evolution of the Makran accretionary prism from a new field investigation in the Pakistani area and from the interpretation of reprocessed seismic lines in the offshore area. The field reconnaissance has provided new structural data about the general structure of the prism and a rejuvenated stratigraphic chart based ...
N. Ellouz-Zimmermann +5 more
openaire +1 more source
This paper discusses the geodynamic evolution of the Makran accretionary prism from a new field investigation in the Pakistani area and from the interpretation of reprocessed seismic lines in the offshore area. The field reconnaissance has provided new structural data about the general structure of the prism and a rejuvenated stratigraphic chart based ...
N. Ellouz-Zimmermann +5 more
openaire +1 more source
Stratal Extension in Thrust Footwalls, Makran Accretionary Prism: Implications for Thrust Tectonics
AAPG Bulletin, 1986Small-scale stratal extension is commonly associated with thrust faults in the Makran accretionary prism of southwest Pakistan. Low-angle normal faults, dipping in the direction of transport relative to the thrust, are common in gouge zones and duplexes, and may also cut the footwall and hanging wall, where they cause stratal extension.
openaire +1 more source
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. +3 more
openaire +2 more sources
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. +3 more
openaire +2 more sources