Pacific superplume-related oceanic basalts hosted by accretionary complexes of Central Asia, Russian Far East and Japan

Safonova, Inna; Utsunomiya, Atsushi; Kojima, Soichi; Nakae, Satoshi; Tomurtogoo, O.; Filippov, A. N.; Koizumi, Kazuto

doi:10.1016/j.gr.2009.02.008

Cited by 177 publications

(100 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[32]. [32], Singgalo type of Ontong Java [8], and Hawaiian tholeiitic and alkali basalts [3]. [28], Ontong Java [43], Kerguelen [27], Caribbean [31], Parana-Etendeka [10], Mino-Tamba [15,16], Siberia [1], and Pechenga [12,13]…”

Section: Resultsmentioning

confidence: 99%

“…The associated basaltic greenstone in this formation was studied preliminarily by Tsukada et al [46,47] and Safonova et al [32]. They suggest that alkali basalts with typical ocean island basalt (OIB) affinity formed as an oceanic island or seamount in an intraplate oceanic setting of the Paleo-Asian or PaleoPacific paleo-ocean that existed between the Angara (Siberian) craton and the North China (Sino-Korean) blocks.…”

Section: Petrogenesis Of Basaltic Greenstonesmentioning

confidence: 90%

“…However, the geochemistry of these greenstones has not been studied in detail, except for brief descriptions by Orolmaa and Erdenesaikhan [29] and Tsukada et al [47]. The geochemical characteristics of Middle Paleozoic greenstones are of particular interest for understanding mantle evolution, petrogenesis, and geodynamic processes in the Hangay-Henteybelt [29,32]. To address these issues, the first three authors conducted fieldwork during the summers of 2011 and 2012 around Uyangasoum.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Discovery of Ferropicrites and High-Magnesian Andesites From the Erdenetsogt Formation, Central Mongolia

Ganbat

Ishiwatari

Orolmaa

et al. 2016

Proc. Mong. Acad. Sci.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Petrogenesis Of Basaltic Greenstonesmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Discovery of Ferropicrites and High-Magnesian Andesites From the Erdenetsogt Formation, Central Mongolia

Ganbat

Ishiwatari

Orolmaa

et al. 2016

Proc. Mong. Acad. Sci.

View full text Add to dashboard Cite

show abstract

“…Several different models have been proposed to explain the tectonic development of the belt: (1) ʻmiogeosyncline basinʼ; Devonian -Carboniferous thick turbidite basin probably deposited on ʻhiddenʼ Archean -Neoproterozoic basement (Kovalenko et al, 1996;Badarch et al, 2002, and references therein); (2) oceanic turbidite terrane (Tomurtogoo, 2002); and (3) accretionary complex (Şengör et al, 1993;Şengör and Natal'in, 1996;Teraoka et al, 1996;Kurimoto et al, 1997;Zorin, 1999;Dorjsuren et al, 2006;Kurihara et al, 2006Kurihara et al, , 2009Tomurotgoo, 2006Tomurotgoo, , 2012Tsukada et al, 2006Tsukada et al, , 2013Byamba et al, 2009;Safonova et al, 2009, Safonova andSantosh, 2012). Presently, the latter hypothesis is widely accepted and evidenced by recent comprehensive sedimentological, biostratigraphical, and geochemical studies conducted on rocks of oceanic plate stratigraphy, which occur as thrust slices (Tomurtogoo, 2002(Tomurtogoo, , 2006(Tomurtogoo, , 2012Kurihara et al, 2006Kelty et al, 2008;Safonova et al, 2009;Bussien et al, 2011;Roser, 2012, 2013), and the hypothesis is partly demonstrated in the new tectonostratigraphic subdivision map of Mongolia (Tomurtogoo, 2006(Tomurtogoo, , 2012. The opening time of the Hangay -Hentey paleo -ocean has been variably interpreted in the literature: Vendian (Şengör et al, 1993;Şengör and Natal'in, 1996;Tomurtogoo et al, 2005;Maruyama et al, 2007;Xiao et al, 2008), Silurian (Zorin, 1999;…”

Section: Geological Outlinementioning

confidence: 99%

“…However, the geochemistry of these greenstones has not been studied in detail, except for brief descriptions by and Tsukada et al (2013). The geochemical characteristics of Middle Paleozoic greenstones are of particular interest for understanding mantle evolution, petrogenesis, and geodynamic processes in the Hangay -Hentey belt Safonova et al, 2009Safonova et al, , 2012. To address these issues, the first three authors conducted fieldwork during the summers of 2011 and 2012 in the Uyanga area of the southern Hangay region.…”

Section: Introductionmentioning

confidence: 99%

Middle Paleozoic greenstones of the Hangay region, central Mongolia: Remnants of an accreted oceanic plateau and forearc magmatism

Erdenesaihan

Ishiwatari

Orolmaa

et al. 2013

Journal of Mineralogical and Petrological Sciences

View full text Add to dashboard Cite

The Hangay -Hentey belt in Central Mongolia constitutes a Pacific -type accretionary orogen that formed through the evolution and closure of the Hangay -Hentey paleo -ocean during the Early Paleozoic to Early Mesozoic. From this belt, new geochemical and petrological results are presented for greenstones from the Erdenetsogt Formation hosted by the Tsetserleg accretionary terrane in the Hangay region, with particular emphasis on newly found picritic and andesitic rocks. These rocks occur mostly in the lower portion of the Erdenetsogt Formation as massive lavas, sills, and dikes closely associated with varicolored bedded ribbon cherts and siltstones. The protoliths of the studied greenstones comprise (1) enriched, plume -derived tholeiitic greenstones including picrites and ferrobasalts with oceanic plateau basalt affinity, (2) non -enriched, plume -derived tholeiitic basalts with E -MORB affinity, and (3) arc -derived high -Mg andesites (HMAs). The plume -derived rocks are characterized by chemical signatures such as slight LREE enrichment similar to that of tholeiitic OIB and the existence of ferropicrite with high FeO* (>14 wt%) and MgO (12 -22 wt%), which is characteristic of large igneous provinces (LIPs), including oceanic plateaus. Their tholeiitic composition and high -Fe and -Ti contents require melting of the source mantle peridotite with addition of some recycled Fe -and Ti -rich basaltic material. The non -enriched basalts may have been generated by a higher degree of melting of the same source mantle. The HMAs are characterized by glassy texture, high MgO content (up to 7 wt%), and significant LREE enrichment with depletion in Nb and resemble sanukite of the Setouchi volcanic belt, SW Japan. We infer that the Hangay tholeiitic greenstones probably represent an accreted upper section of an oceanic plateau that developed in the deep -water region of the Hangay -Hentey paleo -ocean in the Devonian. The Hangay HMAs may have been produced by subduction of young oceanic plate after an oceanward back -stepping of the subduction zone that was a result of the collision during the Carboniferous of the oceanic plateau and the active continental margin of the Central Mongolian Massif.

show abstract

Late Mesozoic-Cenozoic apatite fission-track (AFT) cooling history of the Greater Khingan Mountains and its implications for regional tectonics

Wang

Zhang

et al. 2022

Preprint

View full text Add to dashboard Cite

Apatite fission-track (AFT) tests of clastic samples from the Greater Khingan Mountains (GKM) in China show a center age of 260-62 Ma. Thermal modeling of observed fission-track-length distributions shows three stages of rapid cooling that may have been caused by extensions between 130 and 94 Ma, 30 and 15.3 Ma, and 45 and 0 Ma, and a heating event that may have been caused in part by changes in the subduction direction of the Pacific plate between 64 and 45 Ma. The cumulative exhumation since the Early Cretaceous, is approximately 3 km. The steady-state terrain model in the three-dimensional numerical simulation is highly consistent with the time and rate of the two-dimensional thermal history simulation for the Early Cretaceous exhumation event. The cooling age clusters of ˜160 to 100 Ma are similar in the GKM and Hailar-Erlian Basins.This correlation provides a basin-mountain link for the two tectonic domains. Such a basin-mountain coupling lasted through 100-42 Ma, as supported again by the shared cooling ages of samples from the GKM and detritus from the range-bounded basins on the two sides of the mountain range. We interpreted the 130-94 Ma cooling event recorded in the GKM as a result of crustal thickening in response to the closure of the Mongolia-Okhotsk Ocean. An increase in the subduction velocity of the Pacific plate since ca. 45 Ma may have created a post-arc extensional tectonic setting that has prevailed to the present in the GKM. Hosted fileessoar.10511322.1.docx available at https://authorea.com/users/535183/articles/598679-latemesozoic-cenozoic-apatite-fission-track-aft-cooling-history-of-the-greater-khinganmountains-and-its-implications-for-regional-tectonics Hosted file supplemental material.docx available at https://authorea.com/users/535183/articles/598679late-mesozoic-cenozoic-apatite-fission-track-aft-cooling-history-of-the-greater-khinganmountains-and-its-implications-for-regional-tectonics

show abstract

Pacific superplume-related oceanic basalts hosted by accretionary complexes of Central Asia, Russian Far East and Japan

Cited by 177 publications

References 71 publications

Discovery of Ferropicrites and High-Magnesian Andesites From the Erdenetsogt Formation, Central Mongolia

Discovery of Ferropicrites and High-Magnesian Andesites From the Erdenetsogt Formation, Central Mongolia

Middle Paleozoic greenstones of the Hangay region, central Mongolia: Remnants of an accreted oceanic plateau and forearc magmatism

Late Mesozoic-Cenozoic apatite fission-track (AFT) cooling history of the Greater Khingan Mountains and its implications for regional tectonics

Contact Info

Product

Resources

About