scholarly journals Porphyry Cu formation in the middle Jurassic Yerington batholith, Nevada, USA: Constraints from laser Raman, trace element, U-Pb age, and oxygen isotope analyses of zircon

Geosphere ◽  
2017 ◽  
pp. GES01351.1 ◽  
Author(s):  
Tenley J. Banik ◽  
Matthew A. Coble ◽  
Calvin F. Miller
Keyword(s):  
Trace Element ◽  
Oxygen Isotope ◽  
Middle Jurassic ◽  
Laser Raman ◽  
Porphyry Cu ◽  
Isotope Analyses

Re-Os isotopic and trace element compositions of pyrite and origin of the Cretaceous Jinchang porphyry Cu-Au deposit, Heilongjiang Province, NE China

2016 ◽  
Vol 129 ◽  
pp. 67-80 ◽  
Author(s):  
Peng Zhang ◽  
Xiao-Wen Huang ◽  
Bin Cui ◽  
Bo-Chao Wang ◽  
Yi-Fan Yin ◽  
...  
Keyword(s):  
Trace Element ◽  
Heilongjiang Province ◽  
Ne China ◽  
Porphyry Cu

scholarly journals Oxygen isotope composition of zircons from the Talnakh economic intrusion of the Noril’sk province: first data

2019 ◽  
Vol 489 (2) ◽  
pp. 170-173
Author(s):  
I. Yu. Badanina ◽  
E. A. Belousova ◽  
K. N. Malitch ◽  
S. F. Sluzhenikin
Keyword(s):  
Oxygen Isotope ◽  
Isotope Composition ◽  
Oxygen Isotope Composition ◽  
Primary Magma ◽  
Crustal Component ◽  
Layered Series ◽  
Isotope Data ◽  
Oxygen Isotope Data ◽  
First Results ◽  
Isotope Analyses

This study presents the first results of oxygen isotope analyses (18O) collected on zircons from the Talnakh economic intrusion within the Norilsk province. Zircons from gabbro-diorite, gabbroic rocks of the layered series and plagioclase-bearing wehrlite have similar mantle-like mean 18O values (5,39 0,49; 5,64 0,48 and of 5,28 0,34, respectively), which differ from 18O in zircons from sulfide-bearing melanocratic troctolite with a taxitic texture in the lower part of the intrusion (mean 18O = 6,50 0,98). These new oxygen isotope data support (i) the mantle-derived origin of the primary magma(s), parental to the Talnakh intrusion, and (ii) possible involvement of a crustal component during the formation of sulfide-bearing taxitic-textured rocks.

Oxygen isotope and trace element compositions of platiniferous dunite pipes of the Bushveld Complex, South Africa – Signals from a recycled mantle component?

Lithos ◽  
2018 ◽  
Vol 310-311 ◽  
pp. 332-341 ◽  
Author(s):  
T. Günther ◽  
K.M. Haase ◽  
M. Junge ◽  
T. Oberthür ◽  
D. Woelki ◽  
...  
Keyword(s):  
South Africa ◽  
Trace Element ◽  
Oxygen Isotope ◽  
Bushveld Complex ◽  
Mantle Component

The age of dust—A new hydrological indicator in arid environments?

Geology ◽  
2021 ◽  
Author(s):  
Simon Turner ◽  
Heather Handley ◽  
Paul Hesse ◽  
Bruce Schaefer ◽  
Anthony Dosseto
Keyword(s):  
Trace Element ◽  
River Sediments ◽  
Preliminary Evidence ◽  
Arid Environments ◽  
Physical Weathering ◽  
Uranium Series ◽  
Fluvial Transport ◽  
And Storage ◽  
Isotope Analyses ◽  
Dust Deposits

Dust plays important roles in the environment, and there has been much interest in the formation, provenance, and age of the world’s dust deposits. Ongoing debates are concerned with the importance of glacial grinding versus eolian abrasion and fluvial transport in the formation of silt-sized particles. Short-lived uranium-series isotopes afford new insights because they can be used both for provenance fingerprinting and for constraining the integrated age of chemical and physical weathering and subsequent transport and storage of sediments. Here we present trace element and Sr, Nd, and U-series isotope analyses from a number of Australian dusts and suspended river sediments remobilized during floods a year later. The inferred ages of the Australian dust appear to be linked to aridification and the loss of inland megalakes ~30–120 k.y. ago. This provides preliminary evidence that the age of dust may provide a new hydrological indicator in arid environments.

Detrital and authigenic minerals in sediments from the western part of the Indian Ocean

1986 ◽  
Vol 50 (355) ◽  
pp. 69-74 ◽  
Author(s):  
A. E. Tsirambides
Keyword(s):  
Indian Ocean ◽  
Oxygen Isotope ◽  
Western Indian Ocean ◽  
The Other ◽  
Authigenic Minerals ◽  
Volcanic Material ◽  
Two Samples ◽  
The Indian Ocean ◽  
Isotope Analyses ◽  
Mn Oxides

AbstractMineralogical and oxygen isotope analyses have been performed on nine western Indian Ocean core samples in order to distinguish the detrital from authigenic minerals in the sediments. Following the removal of carbonates, organic constituents and Fe and Mn oxides, the residue was separated into five size fractions, the principal minerals present being feldspar, quartz, clinoptilolite, and clay minerals.Oxygen isotope compositions for two samples reflect an authigenic origin for clinoptilolite by the submarine alteration of volcanic material. Oxygen isotope compositions of two separates (free from feldspar and clays) suggest a detrital origin for the quartz in this area. The same mode of origin is apparent for the other components too, except possibly for some smectite which may have formed authigenically.

Sign in / Sign up

Export Citation Format

Share Document