Results 11 to 20 of about 1,682 (219)

The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces

open access: yesGeophysical Monograph Series, Page 229-246., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson   +2 more
wiley  

+12 more sources

THE PRECAMBRIAN HISTORY OF THE ORIGIN AND EVOLUTION OF THE SOLAR SYSTEM AND EARTH. PART 1

open access: yesГеодинамика и тектонофизика, 2015
The paper provides a review of early stages of development the Solar System and the geological history of Earth with reference to the latest data on the origin of the Solar System and the formation of the first continental rocks and results of studies of
M. I. Kuz’min
doaj   +1 more source

Basement Nature of the West Junggar Terrane: Insight from the Age and Hf-O-H2O of Xenocrystic Zircons from Jurassic Basalt [PDF]

open access: yesLithosphere
The West Junggar region is located in the southwestern part of the Central Asian Orogenic Belt (CAOB). The basement nature of the West Junggar terrane—whether ancient or juvenile—has long fueled debate.
Senpei Wu   +4 more
doaj   +1 more source

ZIRCONS FROM ROCKS OF THE MURZINKA-ADUI METAMORPHIC COMPLEX: GEOCHEMISTRY, THERMOMETRY, POLYCHRONISM, AND GENETIC CONSEQUENCES

open access: yesГеодинамика и тектонофизика, 2021
Transformation of the oceanic crust into the continental one in orogenic belts is an important problem in petrological studies. In the paleocontinental sector of the Urals, a key object for tracing the stages of metamorphism and investigating the origin ...
G. Yu. Shardakova   +4 more
doaj   +1 more source

The Constraints of Carbonaceous Mudstone Re-Os and Detrital Zircons U-Pb Isotopic Dating on the Diagenetic and Metallogenic Ages from the Dabaoshan Copper Deposit in Guangdong Province

open access: yesYankuang ceshi, 2022
BACKGROUND With the development of high-precision negative thermal ionization mass spectrometry (N-TIMS) technology, Re-Os isotopic dating of carbonaceous mudstone is more and more widely used in the determination of sedimentary age. The controversy over
LIU Wusheng   +8 more
doaj   +1 more source

Zircon Hf isotopic compositions of the basement gneiss in Bayan Obo: Constraints on crustal evolution of the Yinshan Block in the North China Craton

open access: yesSolid Earth Sciences, 2023
Bayan Obo, located in the north margin of the Yinshan Block, North China Craton (NCC), contains the Archean to Paleoproterozoic basement rocks which may shed light on the early crustal evolution of the NCC.
Ying Wei   +4 more
doaj   +1 more source

The timing of the initial collision between the South and North China blocks constraining from the sediments in the eastern Sichuan Basin

open access: yesScientific Reports, 2023
In this study, detrital zircon U–Pb geochronology, trace element and Hf isotopic compositional data from the Early-Middle Triassic clastic rocks in the eastern Sichuan Basin were obtained to distinguish the sediment provenance and constrain the timing of
Tianjia Liu   +8 more
doaj   +1 more source

Geochronology, trace elements and Hf isotopic geochemistry of zircons from Swat orthogneisses, Northern Pakistan

open access: yesOpen Geosciences, 2020
In this study, zircon grains are applied for U–Pb dating, Hf isotopes and trace elements to reveal the origin of magmatism and tectonic evolution of Late Paleozoic rocks of the Indian plate, Northern Pakistan.
Sheikh Lawangin   +3 more
doaj   +1 more source

Plagioclasites from chromite-bearing ultramafic rocks of the Rai-Iz massif

open access: yesЛитосфера, 2016
The corundum-bearing and without-corundum plagioclasites from chromite-bearing ultramafic rocks of Rai-Iz massif were studied. Chemical composition of the rock-forming minerals and rock geochemical characteristics was determined.
N. V. Vakhrusheva   +6 more
doaj   +2 more sources

Dating the Sedimentary Protolith of the Daldyn Group Quartzite, Anabar Shield, Russia: New Detrital Zircon Constraints

open access: yesGeosciences, 2020
Quartzites and paragneisses of the Archean granulite series of the Anabar Shield (Siberian Craton, Russia) are described geochemically. The Sm-Nd isotope systematics of the rocks and the U-Pb age (SHRIMP II) and geochemistry of zircons from quartzites ...
Nikolay I. Gusev   +2 more
doaj   +1 more source

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