scholarly journals Global Implication of Mesoproterozoic (1.4 Ga) Magmatism Within Sette-Daban Range (Southeast Siberia)

2021 ◽  
Author(s):  
Sergey Malyshev ◽  
Alexey Ivanov ◽  
Andrey Khudoley ◽  
Vadim Kamenetsky ◽  
Maya Kamenetsky ◽  
...  
Keyword(s):  
Siberian Craton ◽  
Direct Consequence ◽  
Large Igneous Province ◽  
Tectonic Activity ◽  
Geochemical Data ◽  
Trace Element Pattern ◽  
Tectonic Events ◽  
Element Pattern ◽  
Igneous Province ◽  
Break Up

Abstract Mesoproterozoic period included several global tectonic events like break-up of Nuna and formation of Rodinia. However, although Siberia is a significant piece of both supercontinents, Mesoproterozoic time is marked by quiescence of magmatic and tectonic activity in it. We report here a mafic dyke (named Gornostakh dyke) in the southeastern Siberian Craton dated at 1419 ± 32 Ma by LA-ICPMS U-Pb geochronology of apatite. Paleogeographic reconstructions suggest that Siberia was connected to Laurentia and Baltica and their reconfiguration interrupts a prolonged tectonic quiescence in the Siberian Craton from ca. 1.88 Ga reflecting a transition from Nuna to Rodinia configuration. The 1419 Ma Gornostakh dyke and coeval deformation observed in the structure of the region may be a direct consequence of this transition. The dyke has tholeiitic compositions with high MgO and alkaline content, low-Ti, and arc-like trace element pattern. Due to the absence of subduction tectonics in the study area, geochemical data could be attributed to a significant contribution from metasomatically enriched subcontinental lithospheric mantle previously modified by subduction processes. Such mafic magmatism on the margin of the Siberian Craton could be related to a hypothetic large igneous province, which initiated the continental break-up.

scholarly journals Global implication of mesoproterozoic (~ 1.4 Ga) magmatism within the Sette-Daban Range (Southeast Siberia)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sergey V. Malyshev ◽  
Alexei V. Ivanov ◽  
Andrey K. Khudoley ◽  
Alexander E. Marfin ◽  
Vadim S. Kamenetsky ◽  
...  
Keyword(s):  
Siberian Craton ◽  
Direct Consequence ◽  
Flood Basalt ◽  
Large Igneous Province ◽  
Tectonic Activity ◽  
Geochemical Data ◽  
Trace Element Pattern ◽  
Tectonic Events ◽  
Element Pattern ◽  
Southeastern Margin

AbstractMesoproterozoic period included several global tectonic events like break-up of Nuna and formation of Rodinia. However, although Siberia is a significant piece of both supercontinents, Mesoproterozoic time is marked by quiescence of magmatic and tectonic activity in it. We report here a mafic dyke (named Gornostakh dyke) in the southeastern Siberian Craton dated at 1419 ± 32 Ma by LA-ICPMS U–Pb geochronology of apatite. The dyke has tholeiitic compositions with high MgO and alkaline content, low-Ti, and arc-like trace element pattern. Due to the absence of subduction tectonics in the study area, geochemical data could be attributed to a significant contribution from metasomatically enriched subcontinental lithospheric mantle previously modified by subduction processes. That kind of composition is common for low-Ti dykes of intraplate flood basalt provinces similar to, for example, Permian–Triassic Siberian large igneous province (LIP). Paleogeographic reconstructions suggest that Siberia was connected to Laurentia and Baltica and their reconfiguration interrupts a prolonged tectonic quiescence in the Siberian Craton from ca. 1.88 Ga reflecting a transition from Nuna to Rodinia configuration. The mafic magmatism on 1419 Ma on the southeastern margin of the Siberian Craton together with coeval extensional tectonics observed in the structure of the Sette-Daban ridge proposes a hypothetical LIP which may be a direct consequence of the beginning of this transition.

The Tethyan Himalaya igneous province: Early melting products of the Kerguelen mantle plume

2021 ◽  
Author(s):  
Sheng-Sheng Chen ◽  
Wei-Ming Fan ◽  
Ren-Deng Shi ◽  
Ji-Feng Xu ◽  
Yong-Min Liu
Keyword(s):  
Mantle Plume ◽  
Crustal Contamination ◽  
Large Igneous Province ◽  
Mafic Rocks ◽  
Os Isotopes ◽  
Igneous Province ◽  
Break Up ◽  
Low Degrees ◽  
The Relationship ◽  
Tethyan Himalaya

Abstract The Kerguelen large igneous province (LIP) has been related to mantle plume activity since at least 120 Ma. There are some older (147–130 Ma) magmatic provinces on circum-eastern Gondwana, but the relationship between these provinces and the Kerguelen mantle plume remains controversial. Here we present petrological, geochronological, geochemical, and Sr–Nd–Hf–Pb–Os isotopic data for high-Ti mafic rocks from two localities (Cuona and Jiangzi) in the eastern Tethyan Himalaya igneous province (147–130 Ma). Zircon grains from these two localities yielded concordant weighted mean 206Pb/238U ages of 137.25 ± 0.98 and 131.28 ± 0.78 Ma (2σ), respectively. The analyzed mafic rocks are enriched in high field strength elements and have positive Nb–Ta anomalies relative to Th and La, which have ocean island basalt-like characteristics. The Cuona basalts were generated by low degrees of melting (3–5%) of garnet lherzolites (3–5 vol.% garnet), and elsewhere the Jiangzi diabases were formed by relatively lower degrees of melting (1–3%) of garnet lherzolite (1–5 vol.% garnet). The highly radiogenic Os and Pb isotopic compositions of the Jiangzi diabases were produced by crustal contamination, but the Cuona basalts experienced the least crustal contamination given their relatively low γOs(t), 206Pb/204Pbi, 207Pb/204Pbi, and 208Pb/204Pbi values. Major and trace element geochemical and Sr–Nd–Hf–Pb–Os isotope data for the Cuona basalts are similar to products of the Kerguelen mantle plume head. Together with high mantle potential temperatures (>1500°C), this suggests that the eastern Tethyan Himalaya igneous province (147–130 Ma) was an early magmatic product of the Kerguelen plume. A mantle plume initiation model can explain the temporal and spatial evolution of the Kerguelen LIP, and pre-continental break-up played a role in the breakup of eastern Gondwana, given the >10 Myr between initial mantle plume activity (147–130 Ma) and continental break-up (132–130 Ma). Like studies of Re-Os isotopes in other LIPs, the increasing amount of crustal assimilation with distance from the plume stem can explain the variations in radiogenic Os.

scholarly journals The links between large igneous provinces, continental break-up and environmental change: evidence reviewed from Antarctica

2013 ◽  
Vol 104 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Bryan C. Storey ◽  
Alan P. M. Vaughan ◽  
Teal R. Riley
Keyword(s):  
Ocean Basin ◽  
Large Igneous Province ◽  
Climatic Effects ◽  
Large Igneous Provinces ◽  
Rifted Margins ◽  
Igneous Provinces ◽  
Igneous Province ◽  
History Of ◽  
Break Up ◽  
Sea Floor Spreading

ABSTRACTEarth history is punctuated by events during which large volumes of predominantly mafic magmas were generated and emplaced by processes that are generally accepted as being, unrelated to ‘normal’ sea-floor spreading and subduction processes. These events form large igneous provinces (LIPs) which are best preserved in the Mesozoic and Cenozoic where they occur as continental and ocean basin flood basalts, giant radiating dyke swarms, volcanic rifted margins, oceanic plateaus, submarine ridges, and seamount chains. The Mesozoic history of Antarctica is no exception in that a number of different igneous provinces were emplaced during the initial break-up and continued disintegration of Gondwana, leading to the isolation of Antarctica in a polar position. The link between the emplacement of the igneous rocks and continental break-up processes remains controversial. The environmental impact of large igneous province formation on the Earth System is equally debated. Large igneous province eruptions are coeval with, and may drive environmental and climatic effects including global warming, oceanic anoxia and/or increased oceanic fertilisation, calcification crises, mass extinction and release of gas hydrates.This review explores the links between the emplacement of large igneous provinces in Antarctica, the isolation of Antarctica from other Gondwana continents, and possibly related environmental and climatic changes during the Mesozoic and Cenozoic.

scholarly journals Enlargement of the area of the Timpton Large Igneous Province (ca. 1.75 ga) of the Siberian craton

2019 ◽  
Vol 10 (4) ◽  
pp. 829-839
Author(s):  
D. P. Gladkochub ◽  
T. V. Donskaya ◽  
R. E. Ernst ◽  
U. Söderlund ◽  
A. M. Mazukabzov ◽  
...  
Keyword(s):  
Siberian Craton ◽  
River Flow ◽  
Large Igneous Province ◽  
Dyke Swarm ◽  
Middle Section ◽  
Geochronological Data ◽  
Igneous Province

We present new geochronological data on dolerites from the Chaya dyke swarm of the Baikal inlier of the Siberian craton. The U‐Pb dating of baddeleyite from one dyke located at the SW end of the Chaya dyke swarm yielded an age of 1752±6 Ma, similar to the previously obtained age of a dyke in the NE end of this swarm. These ages estab‐ lish an age of 1752 Ma for a unified Chaya dyke swarm that extends for more than 200 km in the Baikal inlier of the Siberian craton. These new data confirm that the entire Chaya dyke swarm (as well as the Timpton‐Algamay and Eastern Anabar swarms) is a part of an overall radiating dyke swarm belonging to the Late Paleoproterozoic Timpton Large Igneous Province (LIP), the center of which is located in the middle section of the Vilyuy river flow. Thus, the LIP is enlarged to include the area further west in the Siberian craton.

scholarly journals Geochemistry and Petrogenesis of Mesoproterozoic Dykes of the Irkutsk Promontory, Southern Part of the Siberian Craton

Minerals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 545 ◽  
Author(s):  
T. Donskaya ◽  
D. Gladkochub ◽  
R. Ernst ◽  
S. Pisarevsky ◽  
A. Mazukabzov ◽  
...  
Keyword(s):  
Mantle Plume ◽  
Siberian Craton ◽  
Coarse Grained ◽  
Large Igneous Province ◽  
Element Abundances ◽  
Igneous Province ◽  
Oceanic Island Basalts ◽  
T Values ◽  
Dyke Swarms ◽  
Extensional Setting

We present new geochemical and Nd isotopic data on two Mesoproterozoic Listvyanka (1350 ± 6 Ma) and Goloustnaya (1338 ± 3 Ma) mafic dyke swarms located in the Irkutsk Promontory of the southern part of the Siberian craton. Listvyanka dykes are sub-vertical with NNE trend, while Goloustnaya dykes are characterized by prevailing W trend. Listvyanka and Goloustnaya dykes are composed of medium to coarse grained dolerites. All dolerites correspond to sub-alkaline tholeiitic basalts according to their major-element compositions with lower to moderate mg#, varying from 36 to 54. The trace and rare earth element abundances in Listvyanka and Goloustnaya dolerites are generally close to basalts of the oceanic island basalts (OIB) type. The Listvyanka dolerites demonstrate slightly positive εNd(t) values varying from +1.1 to +1.5, while the Goloustnaya dolerites are characterized by lower εNd(t) values ranging from −0.9 to +0.1. Geochemical and isotopic affinities of the Listvyanka dolerites suggest their enrichment by a mantle plume related source. For the Goloustnaya dolerites, we assume also some additional lithospheric input to their mantle plume-related source. The emplacement of both studied dolerites took place in intracontinental extensional setting, caused by a single rising mantle plume. Listvyanka and Goloustnaya dolerites are coeval to several mafic magmatic events in northern Laurentia and likely represent part of the Mesoproterozoic plumbing system of a Siberian–Laurentian Large Igneous Province.

Large igneous province of about 1750 Ma in the Siberian Craton

2010 ◽  
Vol 430 (2) ◽  
pp. 168-171 ◽  
Author(s):  
D. P. Gladkochub ◽  
S. A. Pisarevsky ◽  
R. Ernst ◽  
T. V. Donskaya ◽  
U. Söderlund ◽  
...  
Keyword(s):  
Siberian Craton ◽  
Large Igneous Province ◽  
Igneous Province

Collision of the Caribbean Large Igneous Province with the Americas: Earliest evidence from the forearc of Costa Rica

2019 ◽  
Vol 131 (9-10) ◽  
pp. 1555-1580 ◽  
Author(s):  
Goran Andjić ◽  
Peter O. Baumgartner ◽  
Claudia Baumgartner-Mora
Keyword(s):  
Costa Rica ◽  
North America ◽  
Large Igneous Province ◽  
Geochemical Data ◽  
Published Data ◽  
Valuable Insight ◽  
Oceanic Plateau ◽  
The Pacific ◽  
Igneous Province ◽  
The Caribbean

AbstractThe Cretaceous period was marked by the most voluminous episodes of oceanic plateau volcanism in the Phanerozoic Eon. Primarily affecting the Pacific, mantle plumes generated oceanic plateaus during three main phases (ca. 145–140 Ma, ca. 122–115 Ma, and ca. 100–90 Ma). Central America is one of the very few circum-Pacific margins where remnants of these Cretaceous plateaus were accreted. The study of their onland exposures provides a highly valuable insight into the complexity and diversity of oceanic plateau histories, from their eruption to their accretion. Exposed in northern Costa Rica, the plateau remnants of the Nicoya Peninsula originated from a Jurassic oceanic crust over-thickened by Early and Late Cretaceous hotspots. These sheared-off pieces of the Farallon Plate testify to the early tectonic interaction of the Caribbean Large Igneous Province (CLIP, ca. 94–89 Ma) with North America, initiated <5 m.y. after the onset of CLIP eruption. By combining our results with previously published data, we propose an updated tectono-stratigraphic framework that divides the Nicoya Peninsula into two oceanic plateau terranes. (1) The accretion timing of the Aptian to Turonian Manzanillo Terrane is constrained by the Coniacian (ca. 89–86 Ma) base of the overlapping Loma Chumico Formation. The proximal tuffaceous forearc deposits of the Loma Chumico Formation are the oldest evidence of a volcanic arc in Costa Rica—called here the Berrugate Arc—as revealed by new biostratigraphic and geochemical data. (2) The Nicoya Complex s. str. is a composite plateau remnant containing rocks of Bajocian to earliest Campanian age. Its accretion occurred during the middle Campanian (ca. 79–76 Ma) and shut down the Berrugate Arc. In contrast to the collision of CLIP with North America, onset of the collision of CLIP with South America began much later, during the latest Campanian (ca. 75–73 Ma).

scholarly journals 40Ar/39Ar Geochronology and New Mineralogical and Geochemical Data from Lamprophyres of Chompolo Field (South Yakutia, Russia)

Minerals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 886
Author(s):  
Evgeny I. Nikolenko ◽  
Konstantin V. Lobov ◽  
Alexey M. Agashev ◽  
Nikolay S. Tychkov ◽  
Maria V. Chervyakovskaya ◽  
...  
Keyword(s):  
Siberian Craton ◽  
Lithospheric Mantle ◽  
Aldan Shield ◽  
Geochemical Data ◽  
Alkaline Magmatism ◽  
Mantle Minerals ◽  
Tectonic Events ◽  
Igneous Activity ◽  
Lithospheric Mantle Source ◽  
Garnet Lherzolites

The alkaline igneous rocks of the Chompolo field (Aldan shield, Siberian craton), previously defined as kimberlites or lamproites, are more correctly classified as low-Ti lamprophyres. The emplacement age of the Ogonek pipe (137.8 ± 1.2 Ma) and the Aldanskaya dike (157.0 ± 1.6 Ma) was obtained using 40Ar/39Ar K-richterite dating. The Chompolo rocks contain abundant xenocrysts of mantle minerals (chromium-rich pyropic garnets, Cr-diopsides, spinels, etc.). The composition of the mantle xenocrysts indicates the predominance of spinel and garnet–spinel lherzolites, while the presence of garnet lherzolites, dunites, harzburgites, and eclogites is minor. The Chompolo rocks are characterized by large-ion lithophile element (LILE) and Light Rare Earth Element (LREE) enrichments, and high field strength element (HFSE) depletions. The rocks of the Ogonek pipe have radiogenic Sr (87Sr/86Sr (t) = 0.70775 and 0.70954), and highly unradiogenic εNd(t) (−20.03 and −20.44) isotopic composition. The trace element and isotopic characteristics of the Chompolo rocks are indicative of the involvement of subducted materials in their ancient enriched lithospheric mantle source. The Chompolo rocks were formed at the stage when the Mesozoic igneous activity was triggered by global tectonic events. The Chompolo field of alkaline magmatism is one of the few available geological objects, which provides the opportunity to investigate the subcontinental lithospheric mantle beneath the south part of the Siberian craton.

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