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2020627 Geochemistry and zircon U–Pb ages of basic rocks in the Kekebieketi mining area from Fuyun Xinjiang China and their geological significance 27 Post250 Ma thermal evolution of the central haysia Block SE China in response to flatslab subduction

Lund University Publiions A revised geochronology for

Zircon grains from nine samples of metavolcanic rocks gneisses granitoids and migmatites from the Blekinge Province in southeasternmost Sweden have been dated by UPb using ion microprobe The results suggest that most of the Blekinge bedrock was formed within a narrow time interval of 177175 Ga including the Vastana supracrustal formation and coastal

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Cooling and exhumation of the midJurassic porphyry

20141226 LETTER Cooling and exhumation of the midJurassic porphyry copper systems in Dexing City SE China insights from geo and thermochronology Xuan Liu Hongrui Fan Noreen J Evans Geoffrey E Batt Brent I A McInnes Kuifeng Yang Kezhang Qin

Tectonics Vol 40 1

2021111 Apatite and zircon helium thermochronometry data from the Western Transverse Ranges WTR yield lateMiocene through Pleistocene cooling ages Reverse faulting within the block initiated prior to and propagates toward the Big

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Tectonomagmatic events of the Qilian orogenic belt in

2020312 The results indie that the detrital zircon ages mainly comprise five populations 220–280 Ma 400–520 Ma 800–1000 Ma 1200–2100 Ma and 2200–2700 Ma The sediments in the Central Qilian Block exhibit zircon age peaks at ~18 Ga and ~10 Ga which support that the Central Qilian Block successively accreted to the Coluia and

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Science Bulletin ScienceDirect by Elsevier

The date an article was first made available online will be carried over Please be aware that although articles in press do not have all bibliographic details available yet they can already be cited using the year of online publiion and the DOI as follows authors article title Publiion year DOI

Magmatic response to the interplay of collisional and

This range cannot be explained by the evolution of the North China crust which has a zircon Hf model age typically between 34 and 27 Ga Geng et al 2012 Kim et al 2014 but is most strongly correlated with ε Hf t values of the Neoproterozoic 780–750 Ma rocks in the northern and western margins of the Yangtze Block in South China

A Brief History of Earth Historical Geology

A Brief History of Earth Based on An Introduction to Geology Chapter 8 Earth History Geologic time on Earth represented circularly to show the individual time divisions and important events Ga=billion years ago Ma=million years ago

Tectonics Vol 40 1

2021111 Apatite and zircon helium thermochronometry data from the Western Transverse Ranges WTR yield lateMiocene through Pleistocene cooling ages Reverse faulting within the block initiated prior to and propagates toward the Big

Geological Journal Vol 56 0

2021106 The gneissic granites in the southern Yili Block were dated at 968873 Ma and were derived from partial melting of Mesoproterozoic greywackes and formed in a collisionrelated setting A compilation and comparisons of available zircon ages from the microcontinental blocks in SW Central Asian Orogenic Belt show that they have similar magmatic

The provenance of Borneos enigmatic Research Online

20201013 Research Online Faculty of Science Medicine and Health Papers Faculty of Science Medicine and Health 2016 The provenance of Borneos enigmatic alluvial diamonds A case study from Cempaka SE Kalimantan Lloyd T White Royal Holloway University of London Ian T Graham University of New South Wales D Tanner Royal Holloway University of London

Detrital zircons from Late Paleozoic to Triassic

The Gongshan Block is a segment of the northern Sibumasu Terrane which is a continental strip derived from Eastern Gondwana However the formation history of the Gongshan Block and its relationship with other East Gondwanaderived blocks remain unclear Here we present five hundred and eighty new analyses of UPb ages of detrital

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A Brief History of Earth Historical Geology

A Brief History of Earth Based on An Introduction to Geology Chapter 8 Earth History Geologic time on Earth represented circularly to show the individual time divisions and important events Ga=billion years ago Ma=million years ago

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Segmental closure of the MongolOkhotsk Ocean Insight

Single zircon grains ranging in age from 500 Ma to 900 Ma distributed in all the formations correspond in age to the Neoproterozoic granites of the Erguna block again suggesting a local sediment source Wu et al 2011 Sun et al 2013 Smirnova and Sorokin 2019 Gordienko et al 2019 The oldest zircon grains 16 Ga to 18 Ga were

Tectonomagmatic events of the Qilian orogenic belt in

2020312 The results indie that the detrital zircon ages mainly comprise five populations 220–280 Ma 400–520 Ma 800–1000 Ma 1200–2100 Ma and 2200–2700 Ma The sediments in the Central Qilian Block exhibit zircon age peaks at ~18 Ga and ~10 Ga which support that the Central Qilian Block successively accreted to the Coluia and

Magmatic response to the interplay of collisional and

This range cannot be explained by the evolution of the North China crust which has a zircon Hf model age typically between 34 and 27 Ga Geng et al 2012 Kim et al 2014 but is most strongly correlated with ε Hf t values of the Neoproterozoic 780–750 Ma rocks in the northern and western margins of the Yangtze Block in South China

Minerals Free FullText Geochemistry Zircon U–Pb

2019513 Zircon LAICPMS U–Pb dating indied that the quartz syenite and alkali granite formed in Early Cretaceous at 1258 ± 12 Ma and 1273 ± 10 Ma respectively their εHft values are −2267 to −1319 with depleted model ages TDM ranging from 1296 Ma to 1675 Ma and crustal model ages TDMC of 2036–2617 Ma

PostCollisional Potassic and Ultrapotassic Magmatism in

The presence of zircon xenocrysts with a Pbevaporation age of 471 ± 33 Ma documents the importance of crustal anatexis in their genesis Processes responsible for the partial melting of metasomatized lithospheric mantle and postcollisional magmatism in the Lhasa block could be a consequence of 1 convective removal of the lower lithosphere

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The western boundary between the Yangtze and

202129 haysia Block Mao et al 2006 Cheng et al 2012 2013 Xu et al 2015a with a poor logic that the WSn deposits have been regarded as the most typical and diagnostic deposit type in the Nanling area of haysia Block Based on the different geological and geophysical characteristics from the Yangtze Block the southeastern Yunnan and