Results 91 to 100 of about 6,387 (218)
Structural history of northern Koshiki Islands and northern Okinawa Trough
Structural evidences in the Koshiki Islands and northern Okiwana trough are very important to understand the opening history of the back arc basin. Based on the fault orientation, fault character, cross-cutting relationship and moved direction, NNE-trending fault system of each area is identified as the rifting phase deformation of the Northern Okinawa-
Hisashi Oiwane +2 more
openaire +3 more sources
On the origin of the North Pacific arcs [PDF]
We present a new hypothesis that relates global plate tectonics to the formation of marginal basins, island arcs, spreading ridges and arc-shaped mountain belts around the North Pacific Ocean.
Fornós, Joan J. +3 more
core +3 more sources
Formation Age of the Ryukyu Arc-Okinawa Trough System.
The Ryukyu Arc-Okinawa Trough system is one of several arc-backarc systems alongthe margin of the western Pacific and east Asia. Recent results of seismic refractionand reflection studies have revealed that the origin of the trough is the continental rifting, and the trough is in a state of the active rifting stage (e. g.
openaire +2 more sources
Spatial Heterogeneity of the Microbial Community in the Surface Sediments in the Okinawa Trough
The Okinawa Trough (OT) has been a focus of scientific research for many years due to the presence of vibrant hydrothermal and cold seep activity within its narrow basin.
Ye Chen +7 more
doaj +1 more source
International audienceSedimentary ?15N record for the past 30 ka buried in the Okinawa Trough in the western North Pacific mimicking the pattern from the Eastern Tropical North Pacific (ETNP), but the values (4.4?5.8?) and the amplitude of the variation ...
Chang, Y. P. +4 more
core +1 more source
Japan Sea, opening history and mechanism: A synthesis [PDF]
Laurent Jolivet est Professeur à l'Université d'Orléans au 1er Septembre 2009International audienceThe respective tectonic effects of back arc spreading and continental collision in Asia are considered either as two independent processes or as closely ...
Amano +121 more
core +4 more sources
Origin of the Magnetic Anomalies in the Southern Okinawa Trough.
Two-dimensional magnetic modeling was performed to investigate the magnetic structure beneath the southern Okinawa Trough. The E-W elongating magnetic anomalies accompanied with the geologic segment of the Yaeyama Graben are explained by a simple model assuming of the seismic layers of 3.6-6.4km/s with a uniform normal magnetization of 2.5A/m as the ...
Atsushi OSHIDA +2 more
openaire +2 more sources
Slab horizontal subduction and slab tearing beneath East Asia [PDF]
The present‐day architecture of subducted slabs in the mantle as inferred from seismic tomography is a record of plate tectonics through geological time. The unusually large slab that lies nearly horizontally above the 660‐km mantle discontinuity beneath
Gurnis, Michael +3 more
core +1 more source
Marine self-potential survey for exploring seafloor hydrothermal ore deposits [PDF]
We conducted a self-potential survey at an active hydrothermal field, the Izena hole in the mid-Okinawa Trough, southern Japan. This field is known to contain Kuroko-type massive sulphide deposits.
KASAYA, Takafumi +3 more
core +1 more source

