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Pacific-Izanagi Ridge

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Journal Article
Journal: Geology
Published: 20 August 2019
Geology (2019) 47 (10): 953–957.
...Jeremy Tsung-Jui Wu; Jonny Wu Abstract Recent studies have debated the timing and spatial configuration of a possible intersection between the Pacific-Izanagi spreading ridge and the northeast Asian continental margin during Cretaceous or early Cenozoic times. Here we examine a newly compiled...
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Journal Article
Journal: Geology
Published: 28 April 2021
Geology (2021) 49 (8): 952–957.
...Toru Yamasaki; Gen Shimoda; Kenichiro Tani; Jinichiro Maeda; Futoshi Nanayama Abstract Recent reconstructions of global plate motions suggest that the Izanagi-Pacific Ridge was subducted along the eastern margin of Eurasia at ca. 50 Ma. In the Hidaka magmatic zone (HMZ), which was located...
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Series: GSA Special Papers
Published: 01 January 2005
DOI: 10.1130/0-8137-2388-4.721
... over mantle plumes. In contrast, several observations do not fit the plume head model. The initial eruption was coincident with a reorientation of the Pacific-Izanagi ridge and an 800-km jump of the triple junction, a low probability occurrence if plume heads behave independently of plate motions...
Series: GSA Special Papers
Published: 01 May 2015
DOI: 10.1130/2015.2511(05)
... examination of bathymetric and magnetic anomaly lineations also shows that the strike of the Pacific-Izanagi Ridge changed gradually on the west side of the triple junction around chron M22. Our observations indicate that the plate boundary reorganization began several million years before the formation...
Journal Article
Published: 01 May 1993
Canadian Journal of Earth Sciences (1993) 30 (5): 893–907.
...., Aluk–Antarctic Ridge beneath Antarctica); (2) slower subduction of the trailing plate (e.g., Nazca–Antarctic Ridge beneath Chile and PacificIzanagi Ridge beneath Japan); (3) transform motion between the trailing and overriding plates (e.g., San Andreas Transform); or (4) divergence between...
Image
Tectonic evolution of Sikhote-Alin (Russian Far East) to Japan during the I...
Published: 20 August 2019
Figure 4. Tectonic evolution of Sikhote-Alin (Russian Far East) to Japan during the Izanagi-Pacific ridge-trench intersection in the early Cenozoic based on this study. PAC—Pacific plate; IZA—Izanagi plate. (A) Mid-Cretaceous to Paleocene arc magmatism was characterized by more-enriched isotopic
Image
Schematic illustrations showing geodynamic setting of the subduction of the...
Published: 28 April 2021
Figure 4. Schematic illustrations showing geodynamic setting of the subduction of the Izanagi-Pacific Ridge–transform intersection in the Eocene. (A) Reconstructed map of the subducting Izanagi-Pacific Ridge at 57 Ma generated by GPlates software ( Müller et al., 2016 , 2018 ) and the inferred
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2430(22)
... Figure 6 shows the plate configuration at M0 time (125 Ma, the beginning of the Cretaceous normal polarity superchron) for the area. The Pacific plate boundaries are constrained by magnetic lineations; the Pacific-Izanagi-Farallon boundaries are drawn assuming a ridge-ridge-ridge triple junction...
Image
(A) Tectonic framework and distribution of Cretaceous to Eocene igneous roc...
Published: 20 August 2019
and western Hokkaido. CSF—Central Sikhote-Alin fault; HTL—Hatagawa tectonic line; TTL—Tanakura tectonic line; MTL—Median tectonic line; ISTL—Itoigawa-Shizuoka tectonic line. (B–D) Proposed plate tectonic reconstructions of the Izanagi and Pacific plates and the Izanagi-Pacific spreading ridge. Lengths
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2430(23)
...). The Pacific plate attained a rhombic outline. The Shatsky Rise and western Mid-Pacific Mountains formed in conjunction with triple junctions along the Pacific-Izanagi and Pacific-Farallon ocean ridges. Island arc systems in the northwestern part of the basin underwent rifting, leading to the generation...
Journal Article
Journal: Geology
Published: 01 March 2005
Geology (2005) 33 (3): 185–188.
... ∼30° reorientation of the Pacific-Izanagi ridge occurred in association with the triple junction jump, suggesting that the jump was caused by external plate tectonic forces ( Sager, 2005 ). Spreading velocities changed as far away as the Atlantic ( Larson and Hilde, 1975 ). Nor is there any evidence...
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Image
<span class="search-highlight">Ridge</span> subduction model of the Lower Yangtze river belt. A. Simplified geolo...
Published: 01 March 2009
subduction between the Izanagi and Pacific plates of eastern China in the Lower Yangtze river belt (LYRB) at ~140 Ma. The thick arrows show the direction of plate drift: Izanagi plate north-northwestward and Pacific plate southwestward (modified after Maruyama et al., 1997 ; Sun et al., 2007a ). C
Journal Article
Journal: Economic Geology
Published: 01 March 2009
Economic Geology (2009) 104 (2): 303–321.
... subduction between the Izanagi and Pacific plates of eastern China in the Lower Yangtze river belt (LYRB) at ~140 Ma. The thick arrows show the direction of plate drift: Izanagi plate north-northwestward and Pacific plate southwestward (modified after Maruyama et al., 1997 ; Sun et al., 2007a ). C...
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Journal Article
Published: 24 June 2019
Geological Magazine (2021) 158 (1): 72–83.
... Sakhalin as a Hawaii-type seamount, composed of large shield volcano(es) that were constructed near a near mid-ocean ridge environment on the downgoing Palaeo-Pacific (or Izanagi) oceanic plate. The collision and accretion of this large seamount with a trench off the coast of Asia took place in the latest...
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Journal Article
Journal: Geology
Published: 01 May 2007
Geology (2007) 35 (5): 407–410.
... that Bowers and Shirshov Ridges were formed by paleo-Hawaiian hotspot magmatism. Age-progressive, intraplate volcanism along the Hawaiian-Emperor Chain (Pacific plate) led Wilson (1963) to first suggest a causal relationship with an upwelling from deep inside Earth (later called “mantle plume...
FIGURES
Image
Early Cretaceous relative plate motion changes were ultimately linked to th...
Published: 01 May 2007
F ig . 2. Early Cretaceous relative plate motion changes were ultimately linked to the rise of the Ontong-Java plume (OJP) head in the southern Pacific basin. A) Prior to the plume event, the Phoenix plate likely dragged other plates southward and the Izanagi plate was being subducted beneath
Image
Early Cretaceous relative plate motion changes were ultimately linked to th...
Published: 01 May 2007
F ig . 2. Early Cretaceous relative plate motion changes were ultimately linked to the rise of the Ontong-Java plume (OJP) head in the southern Pacific basin. A) Prior to the plume event, the Phoenix plate likely dragged other plates southward and the Izanagi plate was being subducted beneath
Image
200 Ma age model from  Müller et al. (2013) . “IP Pole” is implied rotation...
Published: 01 April 2014
pole for Izanagi-Phoenix motion, with associated flow lines shown by the latitude-longitude grid about this pole. Yellow shaded polygon is crust 0–65 m.y. old and red dash line is ridge axis in this alternate model. Insert A is oceanic crustal area versus age plot from Müller et al. Green dot “A100
Journal Article
Journal: Geology
Published: 01 April 2014
Geology (2014) 42 (4): e334.
... pole for Izanagi-Phoenix motion, with associated flow lines shown by the latitude-longitude grid about this pole. Yellow shaded polygon is crust 0–65 m.y. old and red dash line is ridge axis in this alternate model. Insert A is oceanic crustal area versus age plot from Müller et al. Green dot “A100...
FIGURES
Journal Article
Journal: Geosphere
Published: 02 March 2023
Geosphere (2023) 19 (2): 383–405.
... Pinnacles) and Mokumanamana (Necker Island), Pacific Ocean ( Figs. 1 and 2 ). The age and geography of these seamounts eliminate both an on-ridge and mantle-plume origin, and thus they provide new information on potential plate drivers for intraplate volcanism. Figure 1. Overview map shows...
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