Northern Territory Geochronology Uranium-Lead …

This dataset comprises uranium-lead (U-Pb) age determinations (reported in millions of years) and isotope ratios for zircon and monazite from rocks from the Northern Territory. Supplementary lutetium-hafnium (Lu-Hf) and oxygen (O) isotope ratios are also provided for zircon from selected samples.

ZIRCON SHRIMP U-PB DATING FOR GARNET-BEARING GNEISSIC ...

Garnet-bearing gneissic granite from Laoshan,Bengbu was dated by zircon SHRIMP U-Pb method.The CL images revealed that the zircon from the dated sample generally displayed core-mantle-rim structure.The age of the core domains was Neoproterozoic(a concordant age of 673 Ma±12 Ma),the mantle yielded an age of 210 Ma±4 Ma~242 Ma±5 Ma with low Th/U values of 0.02~0.15,and the rims …

Extended periodic table - Wikipedia

An extended periodic table theorises about chemical elements beyond those currently known in the periodic table and proven up through oganesson, which completes the seventh period (row) in the periodic table at atomic number (Z) 118.. If further elements with higher atomic numbers than this are discovered, they will be placed in additional periods, laid out (as with the existing periods) to ...

U-PB ZIRCON AND MONAZITE GEOCHRONOLOGY AND HAFNIUM ...

u-pb zircon and monazite geochronology and hafnium isotopic geochemistry of neoacadian and early alleghanian plutonic rocks in the alabama eastern blue ridge, southern appalachian mountains by stanton b ingram iii dr. joshua j. schwartz, committee chair dr. harold h. stowell dr. samantha e. hansen dr. mark g. steltenpohl a thesis

Characterization of the Paleoproterozoic Hottah terrane ...

The Wopmay orogen is a Paleoproterozoic orogenic belt along the western margin of the Archean Slave craton in northwest Canada. It comprises the following tectonic elements (), from east to west: supracrustal rocks of the Coronation margin deposited on the extended Slave craton; an internal metamorphic zone consisting of complexly deformed rocks of the margin and possibly including ...

U–Pb age and Lu–Hf signatures of ... - Cambridge Core

U–Pb and Lu–Hf isotope analyses of detrital zircon from the latest Ordovician (Hirnantian) Langøyene Formation, the Late Silurian Ringerike Group and the Late Carboniferous Asker Group in the Oslo Rift were obtained by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS).

Geochemical, isotopic, and zircon (U-Pb, O, Hf isotopes ...

Stars represent the three samples studied for zircon oxygen and hafnium isotopes. Their composition is given in Table 1. B A 0 50 100 Km El Barquero Beach Vivero Puebla de Trives Viana do Bolo Puebla de Sanabria Miranda do Douro Hiendelaencina. Geologica Acta, 15(4), 245-260, I (2017)

Californium - Wikipedia

The zircon hafnium (ε Hf [t] > +12 to +20) and oxygen (δ 18 O = 4.6‰–6.0‰) isotope compositions strongly suggest that these plutons were derived from a typical depleted mantle source. These Hf-O isotope compositions coupled with the absence of zircon inheritance indicate a minimal contribution from partial melting of either subducting ...

LA-ICP-MS and SIMS U-Pb and U-Th zircon …

Schmitt A.K., Klitzke M., Gerdes A., Schäfer C. Zircon hafnium-oxygen isotope and trace element petrochronology of intraplate volcanics from the Eifel (Germany) and implications for mantle versus crustal origins of zircon megacrysts. J. Petrol. 2017 [Google Scholar]

Zircon M127 - A Homogeneous Reference Material for …

This is the peer reviewed version of the following article: Nasdala, L. and Corfu, F. and Valley, J. and Spicuzza, M. and Wu, F. and Li, Q. and Yang, Y. et al. 2016. Zircon M127 - A Homogeneous Reference Material for SIMS U-Pb Geochronology Combined with Hafnium, Oxygen and, …

Hf isotopic compositions of the standard zircons for U-Pb ...

Using the newly published Yb isotopic abundances and the mass bias relationship between Yb and Hf, we carried out an analysis of Hf isotopes in the standard zircon 91500 by means of 193 nm laser attached to Neptune multi-collector ICP-MS (LA-MC-ICPMS). The obtained Hf isotopic data, in eitherin situ or line scan modes, are not only identical for different spot sizes, but also are consistent ...

34 Liu D Y, Wilde S A, Wan Y S, et al. Combined U-Pb ...

34 Liu D Y, Wilde S A, Wan Y S, et al. Combined U-Pb, Hafnium and oxygen isotope analysis of zircons from meta-igneous rocks in the southern North China Craton reveal multiple events in the late Mesoarchean-early Neoarchean. Chem Geol, 2009, 261: 140-154

U-Pb dating, oxygen and hafnium isotopic ratios of zircon ...

U-Pb age, oxygen and hafnium isotopic ratios in zircon from rocks of ocean core complexes at Mid-Atlantic Ridge have been studied using SHRIMP and MC-LA-ICP-MS techniques. U-Pb dating revealed four group of zircons: 1) 0,6-1,7 Ma, 2) 6,7-11,2 Ma, 3) 12,9-17,6 Ma, 4) ≥200 to 2044 Ma. The δ18O values range from 4,74 to 7,2‰ and are distinct ...

Combined U-Pb and Lu-Hf isotope analyses by laser …

HAWKESWORTH CJ AND KEMP AIS. 2006. Using hafnium and oxygen isotopes in zircons to unravel the record of crustal evolution. Chem Geol 226: 144-162. [ Links ] JACKSON SE, PEARSON NJ, GRIFFIN WL AND BELOUSOVA EA. 2004. The application of laser ablation inductively coupled plasma mass spectrometry to in situ U-Pb zircon geochronology. Chem Geol ...

An integrated U-Pb, Hf, and O isotopic provenance analysis ...

The Paleoproterozoic Murmac Bay Group, northern Saskatchewan, Canada, was deposited near the southwestern margin of the Rae craton between 1.93 Ga and 2.32 Ga. We present the first integrated detrital zircon U-Pb geochronology, Lu-Hf, and O isotope analysis of detrital zircon from these rocks with the aim to elucidate provenance and ...

In situ zircon U-Pb, oxygen and hafnium isotopic ...

Six samples of the Linglong granitic pluton from the southeastern margin of the North China craton yield similar Jurassic magmatic zircon U-Pb ages and evolved whole-rock Sr-Nd isotopic compositions. They are weakly peraluminous to strongly peraluminous, with A/CNK (molar Al 2 O 3 /[CaO + Na 2 O + K 2 O]) ratios of 1.05 to 1.3 except one sample with an A/CNK of 0.98.

U-Pb Ages and Hf Isotope Compositions of Detrital Zircons ...

LA-ICP-MS U-Pb dating and in situ Hf isotope analysis were carried out for the detrital zircons to constrain the depositional age and provenance of the Wawukuang Formation, which is believed as the earliest unit of the Laiyang Group in the Jiaolai Basin, and its implications. Most of these detrital zircons from the feldspar quartz sandstone in the Wawukuang Formation are magmatic in origin ...

Age and origin of post collision Baltoro granites, south ...

Hafnium isotopic composition (εHf (0)) is very heterogeneous ranging from - 17.1 to + 4.4 while the oxygen isotopic composition of the granites is homogeneous with mean δ 18 O ranging from 7.2 to 9.4‰. Based on U-Pb geochronology and Hf-O isotopic composition, the involvement of two main sources is suggested (1) Cretaceous calc-alkaline ...

Fermium - Wikipedia

Fermium, 100 Fm Fermium; Pronunciation / ˈ f ɜːr m i ə m / (FUR-mee-əm) Mass number [257] Fermium in the periodic cairt

Abstract: MAGMATIC CONSTRUCTION OF THE BALD …

The Late Jurassic to Early Cretaceous Bald Mountain batholith is a large (~450 km 2), composite, silicic batholith located in the Blue Mountains province, NE Oregon.It intrudes a complex structural boundary containing imbricated slabs of hornblende metagabbro (likely derived from the Wallowa island-arc terrane), which are tectonically interleaved within the Permian to Early Jurassic Elkhorn ...

Template:Infobox fermium - Wikipedia

Fermium, 100 Fm Fermium; Pronunciation / ˈ f ɜːr m i ə m / (FUR-mee-əm) Mass number [257] Fermium in the periodic cairt

5 The U-Pb system - University College London

5.4 Detrital geochronology. Zircon (ZrSiO 4) is a common U-Th-bearing accessory mineral in acidic igneous rocks, which form the main proto-sources of the siliciclastic sediments.Zircon is a very durable mineral that undergoes minimal chemical alteration or mechanical abrasion. Therefore, zircon crystals can be considered time capsules carrying the igneous and metamorphic history of their proto ...

(PDF) Early Cretaceous ridge subduction beneath southern ...

11/9/2018· The zircon hafnium (εHf[t] > +12 to +20) and oxygen (δ18O = 4.6‰–6.0‰) isotope compositions strongly suggest that these plutons were derived from a typical depleted mantle source.

Northern Territory Geochronology Uranium-Lead (UPb ...

This dataset comprises uranium-lead (U-Pb) age determinations (reported in millions of years) and isotope ratios for zircon and monazite from rocks from the Northern Territory. Supplementary lutetium-hafnium (Lu-Hf) and oxygen (O) isotope ratios are also provided for zircon from selected samples.

In situ zircon U–Pb, oxygen and hafnium isotopic ...

In situ zircon U–Pb, oxygen and hafnium isotopic compositions of Jurassic granites from the North China craton: Evidence for Triassic subduction of continental crust and subsequent metamorphism ...

HfNbTaTiZr HIGH ENTROPY ALLOY PROCESSED BY MECHANICAL ALLOYING

HfNbTaTiZr high entropy alloy processed by mechanical alloying 203 Hafnium (fig. 1) is known for its high resistance to concentrated alkalis, but it can react with oxygen, nitrogen, carbon, boron, sulphur, and silicon at high temperatures. Because of its good absorption cross section for thermal neutrons,