Results 61 to 70 of about 24,344 (266)

GEOCHEMISTRY AND RAMAN SPECTRA OF ZIRCONS FROM ORE (PGE-Au) AMPHIBOLITES OF THE TRAVYANAYAGUBA MASSIF, NORTH KARELIA

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The results of an integrated morphological, precision geochemistry and Raman spectroscopy study of heterogeneous and polygenic zircons from the likely paleoproterozoic mafic rocks - ore (Pt-Pd-Au) amphibolites of the Travyanaya Guba massif located in the
Владимир Николаевич Кожевников, Светлана Николаевна Ивашевская, Владимир Иванович Кевлич, Vladimir Kozhevnikov, Svetlana Ivashevskaya, Vladimir Kevlich   +5 more
doaj   +1 more source

Reidite Formation From Zircon Subjected to 20, 40, and 60 GPa Shock Experiments

Journal of Raman Spectroscopy, EarlyView.
Structure disordering as a result of shock pressure: In zircon shocked from 20 to 60 GPa, the shock‐induced structural disorder increases with increasing shock pressure (gray area). Shock disorder of zircon is an integral part of its transformation to reidite: Reidite occurs after amorphous material.
Dmitry A. Zamyatin, Elizaveta Kovaleva
wiley   +1 more source

ARCHEAN ZOISITITES OF THE GRIDINO ECLOGITEBEARING MELANGE, BELOMORIAN PROVINCE OF THE FENNOSCANDIAN SHIELD: GEOLOGY, UPB ZIRCON AGES AND GEODYNAMIC SETTING

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The new results of the isotope UPb dating of zircons from zoisitites, which are the isofacies accessories of the eclogites in the Gridino eclogitebearing melange of the Belomorian mobile belt, Fennoscandian Shield, are reported.
Александр Иванович Слабунов, Олег Иванович Володичев, Ли Сяоли, Олег Александрович Максимов, Slabunov Alexander, Oleg Volodichev, Li Xiaoli, Oleg Maksimov   +7 more
doaj   +1 more source

LA-ICP-MS U–Pb ages of detrital zircons from Middle Jurassic sedimentary rocks in southwestern Fujian: Sedimentary provenance and its geological significance

Open Geosciences, 2020
In order to determine the tectonic regime change of the early Mesozoic in the South China Block, this study analyzed sedimentary rocks in the Middle Jurassic of southwestern Fujian by modal analysis of sandstones, elemental geochemical analysis of ...
Zhongjie Xu, Jintao Kong, Rihui Cheng, Yizhi Lan, Liaoliang Wang   +4 more
doaj   +1 more source

Zircon

Southern Spaces, 2016
Robert Morgan reads the poem "Zircon" in Zirconia, North Carolina, recalling his uncles' experience of digging the crystalline mineral and pondering its ability to clock the long register of time.
openaire   +2 more sources

U–Pb dating and Sm–Nd isotopic analysis of granitic rocks from the Tiris Complex : new constaints on key events in the evolution of the Reguibat Shield, Mauritania [PDF]

, 2012
The Reguibat Shield of N Mauritania and W Algeria represents the northern exposure of the West African Craton. As with its counterpart in equatorial West Africa, the Leo Shield, it comprises a western Archaean Domain and an eastern Palaeoproterozoic ...
Abdouloye, T.B., Darbyshire, F., Gillespie, M., Horstwood, M.S.A., O'Connor, E.A., Pitfield, P.E.J., Schofield, D.I.   +6 more
core   +1 more source

The Material Basis of 18th‐Century Meissen Porcelain

Archaeometry, EarlyView.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source

Hafnium isotope composition of zircon from the platinum-bearing Feklistov massif (Shantar Archipelago, Sea of Okhotsk, Russia)

Литосфера, 2018
Object. This study firstly evaluates Hf-isotope characteristics of zircons from wehrlite of the platinum-bearing Feklistov massif, which is closely associated with platinum coastal placer deposits. Materials and methods.
Kreshimir N. Malitch, Inna Yu. Badanina
doaj   +1 more source

Onset of giant planet migration before 4480 million years ago

, 2019
Immediately after their formation, the terrestrial planets experienced intense impact bombardment by comets, leftover planetesimals from primary accretion, and asteroids.
Abramov, Oleg, Brasser, Ramon, Kelly, Nigel M., Mojzsis, Stephen J., Werner, Stephanie C.   +4 more
core   +1 more source

MINERALOGICAL, PETROGRAPHIC AND GEOCHEMICAL EVIDENCE FOR ZIRCON FORMATION CONDITIONS WITHIN THE BURPALA MASSIF, NORTHERN BAIKAL REGION

Геодинамика и тектонофизика
This paper reports investigation on zircons from quartz syenite, alkaline and foid syenite, as well as metasomatic rock from the fenitization zone hosted by the Burpala massif.
A. E. Starikova, A. V. Malyutina, I. A. Izbrodin, A. G. Doroshkevich, T. A. Radomskaya, A. T. Isakova, D. V. Semenova, A. V. Korsakov   +7 more
doaj   +1 more source