Chromian-spinel compositions from the Bo Xinh ultramafics, Northern Vietnam: Implications on tectonic evolution of the Indochina block

XuanThanh, Ngo; Tu, Mai Trong; Itaya, Tetsumaru; Kwon, Sanghoon

doi:10.1016/j.jseaes.2011.02.004

Cited by 38 publications

(29 citation statements)

References 71 publications

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“…The later northward subduction of the oceanic plate generated continental arc magmatism on the southern margin of the Karakoram block. This calc-alkaline magmatism has a zircon SHRIMP U-Pb and K-Ar biotite age of 97-115 Ma (Fraser et al, 2001;Ravikant, 2006;Searle et al, 1998;Thanh et al, 2010Thanh et al, , 2011Thanh et al, , 2012. These geochronological data are closely comparable with our data and those of Khan et al (2007) from basic rocks of the Shyok ophiolite.…”

Section: Age Of the Shyok Suturesupporting

confidence: 88%

A Cretaceous forearc ophiolite in the Shyok suture zone, Ladakh, NW India: Implications for the tectonic evolution of the Northwest Himalaya

Thanh

Rajesh

Itaya

et al. 2012

Lithos

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Section: Age Of the Shyok Suturesupporting

confidence: 88%

A Cretaceous forearc ophiolite in the Shyok suture zone, Ladakh, NW India: Implications for the tectonic evolution of the Northwest Himalaya

Thanh

Rajesh

Itaya

et al. 2012

Lithos

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“…Thanh et al . () and Zhang et al . () described the stratigraphy and structure of the Nam Co Formation and suggested that at least some parts of the formation are of an accretionary prism formed along the subduction zone between the Indochina and South China blocks.…”

Section: Regional Geologymentioning

confidence: 96%

“…To the north, the Song Ma region has long been accepted as the zone of amalgamation of the Indochina and South China blocks (e.g. Sengor et al ., ; Metcalfe, ; Tri and Khuc, 2011; Thanh, ; Thanh et al ., , ; Faure et al ., ). Recently, Faure et al .…”

Section: Introductionmentioning

confidence: 97%

Subduction initiation of Indochina and South China blocks: insight from the forearc ophiolitic peridotites of the Song Ma Suture Zone in Vietnam

2015

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The Song Ma region, which is located in the northwestern Vietnam represents the zone of amalgamation between Indochina and South China blocks. Numerous scattered ultramafic rocks occur in this region in association with Early to Middle Palaeozoic greenschists and paragneisses, and all these rocks were subjected to hydrous metamorphism and deformation. Here, we present new field data, mineral chemistry and geochemistry from a suite of hydrated peridotites within the Song Ma region and discuss the tectonic significances of the region. We also combine the available data within the Song Ma region and Indochina–South China blocks to discuss the tectonic evolution of the subduction zone. Based on the results, we suggest that the peridotites from the Song Ma are mantle residues that suffered a high degree of partial melting in a forearc tectonic setting. The present data together with the available data within the Song Ma region and the Indochina and South China blocks clearly represent a southward directed Middle Palaeozoic subduction system. The Middle Palaeozoic subduction and accretion events mark the evolutionary history along an active convergent margin between the Indochina and South China blocks, possibly related to the amalgamation of the Pangaea supercontinent. Copyright © 2015 John Wiley & Sons, Ltd.

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“…Beyond, ferritchromite is usually attributed to the effects of low to medium grade metamorphism up to lower amphibolite facies (Farahat 2008;xuan Thanh et al 2011). Mn and Zn show high content and introduced into spinel during alteration and metamorphism.…”

Section: Tab 1: Heavy Mineral Assemblage Of Cave Sediments From the mentioning

confidence: 99%

Heavy minerals in sediments from the Mošnica Cave: Implications for the pre-Quaternary evolution of the middle-mountain allogenic karst in the Nízke Tatry Mts., Slovakia

Bónová¹,

Bella²,

Bóna³

et al. 2014

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UDC 551.442(437) Katarína Bónová, Pavel Bella, Ján Bóna, Ján Spišiak, Martin Kováčik, Martin Kováčik & Ľubomír Petro: Heavy minerals in sediments from the Mošnica Cave: Implications for the preQuaternary evolution of the middle-mountain allogenic karst in the Nízke Tatry Mts., Slovakia The cave deposits from the Mošnica Cave located on the northern slope of the Nízke Tatry Mts. were analysed by sedimentological, petrographical and mineralogical methods. Based on mineralogical study the cave sediments are composed of dolomite, quartz, muscovite, amphibole, chlorite, calcite, Kfeldspar and plagioclase. Heavy mineral assemblage is formed by garnet, zircon, apatite, monazite, tourmaline, staurolite, rutile, titanite, epidote, sillimanite, allanite, andalusite and barite. Opaque minerals are represented by ilmenite, pyrite, magnetite, Cr-spinel, Fe-oxyhydroxides and chalcopyrite. Detailed research of chemical composition of the heavy minerals points to their source rocks formed by granitoids, amphibolites and amphibolite gneisses representing the crystalline basement and probably by Triassic cover sediments of the Lúžna Formation. Presence of the allochthonous minerals in the cave from metamorphic complex recently occurred on the opposite southern slope of the Nízke Tatry Mts. indicates a past larger catchment area of the allogenic karst of Mošnica Valley on the pre-Quaternary less dissected terrain. A change of watershed boundary leading through the central range of the Nízke Tatry Mts. was probably connected with the tilting of this mountain range IzvlečekUDK 551.442(437) Katarína Bónová, Pavel Bella, Ján Bóna, Ján Spišiak, Martin Kováčik, Martin Kováčik & Ľubomír Petro: Težki minerali v sedimentih iz jame Mošnica: implikacije za predkvartarni razvoj srednjegorskega alogenega krasa v Nizkih Tatrah, Slovaška Jamski sediment iz jame Mošnica, ki se nahaja na severnem pobočju Nizkih Tater, so bili analizirani z sedimentološkimi, petrografskimi in mineraloškimi metodami. Na podlagi mineraloških raziskav jamske sedimente sestavljajo dolomit, kremen, muskovit, amfibol, klorit, kalcit, K-glinenec in plagioklaz. Težko mineralno frakcijo predstavljajo granat, cirkon, apatit, monazit, turmalin, staurolit, rutil, titanit, epidot, sillmanit, allanit, andaluzit in barit. Neprozorni minerali so zastopani z ilmenitom, piritom, magnetitom, Cr-spinelom, Fe-oksihidroksidi in halkopiritom. Detajlna analiza kemične sestave težkih mineralov je nakazala njihov izvor iz granitov, amfibolitov in amfibolitnih gnajsov, ki predstavljajo kristalinsko podlago in iz triasnih krovnih sedimentov Lužna formacije. Prisotnost alohtonega materiala iz metamorfnega kompleksa, ki so bili najdeni v jami na nasprotnem južnem pobočju Nizkih Tater nakazuje nekdanje večje območje porečja alogenega krasa v dolini Mošnice na predkvartarnim manj razčlenjenim terenu. Sprememba meje porečja, ki poteka skozi osrednje območje Nizkih Tater je bila verjetno povezana z nagibanjem tega pogorja proti severu zaradi kompresijskega tektonskega režima v času poznega ...

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Chromian-spinel compositions from the Bo Xinh ultramafics, Northern Vietnam: Implications on tectonic evolution of the Indochina block

Cited by 38 publications

References 71 publications

A Cretaceous forearc ophiolite in the Shyok suture zone, Ladakh, NW India: Implications for the tectonic evolution of the Northwest Himalaya

A Cretaceous forearc ophiolite in the Shyok suture zone, Ladakh, NW India: Implications for the tectonic evolution of the Northwest Himalaya

Subduction initiation of Indochina and South China blocks: insight from the forearc ophiolitic peridotites of the Song Ma Suture Zone in Vietnam

Heavy minerals in sediments from the Mošnica Cave: Implications for the pre-Quaternary evolution of the middle-mountain allogenic karst in the Nízke Tatry Mts., Slovakia

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