Results 11 to 20 of about 4,759,109 (83)

U-Pb geochronology of the Fort Augustus granite gneiss: constraints on the timing of Neoproterozoic and Palaeozoic tectonothermal events in the NW Highlands of Scotland [PDF]

open access: yes, 2001
The West Highland granite gneiss suite in Inverness-shire, Scotland, represents a series of S-type, anatectic granites formed by partial melting of host Neoproterozoic metasediments of the Moine Supergroup.
Kinny, P.D.   +14 more
core   +9 more sources

SHRIMP ion probe zircon geochronology and Sr and Nd isotope geochemistry for southern Longwood Range and Bluff Peninsula intrusive rocks of Southland, New Zealand [PDF]

open access: yes, 2006
Permian–Jurassic ultramafic to felsic intrusive complexes at Bluff Peninsula and in the southern Longwood Range along the Southland coast represent a series of intraoceanic magmatic arcs with ages spanning a time interval of 110 m.y.
Ireland, Trevor R.   +7 more
core   +1 more source

Late Precambrian U-Pb titanite age for peak regional metamorphism and deformation (Knoydartian orogeny) in the western Moine, Scotland [PDF]

open access: yes, 2003
There has been controversy over the number and timing of orogenies in the Precambrian Moine block in the Scottish Caledonides since the earliest radiometric dating in the 1960s. This work challenges a recent hypothesis, that this sector of the Laurentian
Tanner, P.W.G., Evans, J.A.
core   +3 more sources

U–Pb dating of cements in Mesozoic ammonites [PDF]

open access: yes, 2014
Dating sedimentary carbonates using the U-Pb method can help improve the Phanerozoic timescale. Using a novel combination of laser-ablation, multi-collector, inductively-coupled-plasma, mass-spectrometry (LA–MC–ICP–MS) and thermal ionization multi ...
Li, Q.   +11 more
core   +1 more source

A low U/Pb souce in the Moon: U-Th-Pb systematics of lunar meteorite Yamato-793169 [PDF]

open access: yes, 1993
P(論文)U-Th-Pb isotopic data were determined on mineral separates of the diabasic lunar meteorite, Yamato-793169,in order to define its age and characterize its magma source.
Torigoye,Noriko   +2 more
core   +1 more source

U-Th-Pb isotopic systematics of lunar meteorite Asuka-31 [PDF]

open access: yes, 1992
P(論文)U-Th-Pb isotopic systematics indicate that Asuka-31 is of lunar origin and was formed 3940±8Ma. The Pb isotopic composition is extremely nonradiogenic compared with those of typical Apollo mare basalts. The Pb-Pb, U-Pb, and Th-Pb ages are concordant
Misawa, Keiji   +2 more
core   +1 more source

Indications of suppression of excited Υ states in Pb-Pb collisions at √sNN = 2.76TeV [PDF]

open access: yes, 2011
This is the pre-print version of the Published Article which can be accessed from the link below.A comparison of the relative yields of Υ resonances in the μ+μ- decay channel in Pb-Pb and pp collisions at a center-of-mass energy per nucleon pair of 2.76 ...
S. Lynch   +999 more
core   +1 more source

U-Th-Pb isotopic systematics of lherzolitic shergottite Yamato-793605 [PDF]

open access: yes, 1997
P(論文)We have undertaken U-Th-Pb isotopic studies on lherzolitic shergottite, Yamato-793605. Four mineral separates (olivine, plagioclase, and two phases of pyroxene) and a whole-rock sample were leached with dilute acid in order to remove secondary Pb ...
Misawa,Keiji   +3 more
core   +1 more source

K-feldspar sand-grain provenance in the Triassic, west of Shetland : distinguishing first-cycle and recycled sediment sources? [PDF]

open access: yes, 2009
Sandstone provenance studies can help constrain palaeogeographic reconstructions and ancient drainage system scales and pathways. However, these insights can be obscured by difficulties in geochemically distinguishing or adequately characterising ...
Daly, J. Stephen   +9 more
core   +1 more source

(Table 4) U-Pb monazite results of metatexite G8-58.1 from Mt. Dalton, northern Oates Land

open access: yes, 2004
No 1-12: Session 1, calibration error of reference monazite: Pb/U 1.03%; Pb/Th 1.27% (n=9).
Fletcher, I R   +7 more
core   +1 more source

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