Results 21 to 30 of about 3,754 (159)

Identification of Gas Accumulation Adjacent to the Gas Hydrate Bearing Zone by Inversion Utilizing AVO Attribute [PDF]

Journal of Petroleum Science and Technology, 2018
The presence of gas hydrate and associated gas in the Makran Accretionary Prism, offshore Iran, has been confirmed by various seismic indicators, including the bottom-simulating reflector (BSR), amplitude blanking, and bright spot. The pre-stack analysis
Effat Behboudi, Nasser Keshavarz, Asghar Naderi   +2 more
doaj   +1 more source

Review of Geochronologic and Geochemical Data of the Greater Antilles Volcanic Arc and Implications for the Evolution of Oceanic Arcs

Geochemistry, Geophysics, Geosystems, Volume 23, Issue 4, April 2022., 2022
Abstract The Greater Antilles islands of Cuba, Hispaniola, Puerto Rico and Jamaica plus the Virgin Islands host fragments of the fossil convergent margin that records Cretaceous subduction (operated for about 90 m.y.) of the American plates beneath the Caribbean plate and ensuing arc‐continent collision in Late Cretaceous‐Eocene time.
H. Y. Hu, R. J. Stern, Y. Rojas‐Agramonte, A. Garcia‐Casco   +3 more
wiley   +1 more source

New Constraints for the On‐Shore Makran Subduction Zone Crustal Structure

Journal of Geophysical Research: Solid Earth, Volume 127, Issue 1, January 2022., 2022
Abstract The Makran Subduction Zone is the primary seismic/tsunami hazard of the northwestern Indian Ocean, but little is known of its on‐shore seismic structure. We derived a shear wave velocity model extending to 100 km depth beneath a ∼400 km‐long seismic profile oriented parallel to the convergence vector of the Arabian Sea Plate. Receiver function/
Keith Priestley, Farhad Sobouti, Rahil Mokhtarzadeh, Mohsen A. Irandoust, Reza Ghods, Khalil Motaghi, Tak Ho   +6 more
wiley   +1 more source

Evolution of the Thermal and Dehydration State of Sediments Entering the North Sumatra Subduction Zone

Geochemistry, Geophysics, Geosystems, Volume 22, Issue 4, April 2021., 2021
Abstract Shallow slip on the plate‐boundary fault during the 2004 Mw 9.2 Aceh‐Andaman Earthquake, offshore North Sumatra, has been linked to thick incoming sediments on the oceanic plate with advanced diagenetic and sediment property changes at the depths of plate boundary fault development.
Duncan E. Stevens, Timothy J. Henstock, Lisa C. McNeill   +2 more
wiley   +1 more source

Assessment of gas-hydrate saturations in the Makran accretionary prism using the offset dependence of seismic amplitudes [PDF]

GEOPHYSICS, 2010
We estimate the saturations of gas hydrate and free gas based on measurements of seismic-reflection amplitude variation with offset (AVO) for a bottom-simulating reflector coupled with rock-physics modeling. When we apply the approach to data from a seismic line in the Makran accretionary prism in the Arabian Sea, the results reveal lateral variations
M. Ojha, K. Sain, T. Minshull
semanticscholar   +4 more sources

Crustal Structure of the UAE‐Oman Mountain Range and Arabian Rifted Passive Margin: New Constraints From Active and Passive Seismic Methods

Journal of Geophysical Research: Solid Earth, Volume 126, Issue 4, April 2021., 2021
Abstract The Semail ophiolite, a thick thrust sheet of Late Cretaceous oceanic crust and upper mantle, was obducted onto the previously rifted Arabian continental margin in the Late Cretaceous, and now forms part of the United Arab Emirates (UAE)‐Oman mountain belt.
S. Pilia, M. Y. Ali, M. P. Searle, A. B. Watts, C. Lü, D. A. Thompson   +5 more
wiley   +1 more source

Crustal Deformation and Fault Strength of the Sulawesi Subduction Zone

Tectonics, Volume 40, Issue 3, March 2021., 2021
Abstract This paper investigates the seismicity and rheology of the North‐Sulawesi subduction zone. Body‐wave modeling is used to estimate focal mechanisms and centroid depths of moderate magnitude (M5–M6.5) earthquakes on the North Sulawesi megathrust and surrounding region.
T. Greenfield, A. C. Copley, C. Caplan, P. Supendi, S. Widiyantoro, N. Rawlinson   +5 more
wiley   +1 more source

Effects of mass waste events on thrust wedges: Analogue experiments and application to the Makran accretionary wedge [PDF]

, 2010
Olistostromes cover large portions of active thrust wedges like Makran, Gulf of Cadiz, and offshore Borneo. Olistostrome emplacement by submarine mass flow represents an instantaneous and massive mass redistribution that may influence thrust wedge ...
Burg, J.P., Dolati, A., Smit, J.H.W., Sokoutis, D.   +3 more
core   +2 more sources

Tectonics of the Papua‐Woodlark Region

Geochemistry, Geophysics, Geosystems, Volume 22, Issue 1, January 2021., 2021
Abstract The Papua‐Woodlark region exemplifies many plate tectonic processes, from active continental breakup to double plunging subduction zones. We present a synthesis of geological and geophysical data from the region and interpret these data to characterize the present plate boundaries.
Elizabeth K. Benyshek, Brian Taylor
wiley   +1 more source

Release of mineral-bound water prior to subduction tied to shallow seismogenic slip off Sumatra [PDF]

, 2017
Plate-boundary fault rupture during the 2004 Sumatra-Andaman subduction earthquake extended closer to the trench than expected, increasing earthquake and tsunami size.
Abby R. Kenigsberg, Andre Hüpers, Bjorlykke, Brandon Dugan, Brian M. House, Farid Chemale, Freya L. Mitchison, Gilles Guèrin, Hideki Mukoyoshi, Hugo F. A. Pouderoux, Insun Song, Jan Backman, Katerina E. Petronotis, Kevin T. Pickering, Kitty L. Milliken, Lisa C. McNeill, Manheim, Mari Hamahashi, Marina C. G. Frederik, Marta E. Torres, Mebae Kuranaga, Nisha Nair, Paola Vannucchi, Peter J. Vrolijk, Sarah Kachovich, Satoko Owari, Steffen Kutterolf, Sylvain Bourlange, Tamara N. Jeppson, Tao Yang, Timothy J. Henstock, Tobias A. Colson, Vacquier, Wenhuang Chen, Xixi Zhao, Yehua Shan   +35 more
core   +5 more sources