Results 11 to 20 of about 7,648,305 (248)
Processes, 2023 With the targets of petroleum exploration transferred to the deep and ancient strata, abundant oil and gas resources have been found in Lower Paleozoic and older strata in central and western China. Due to complex evolutionary processes including multiple episodes of hydrocarbon accumulation and ubiquitously accompanied by secondary alterations ...
Jie Wang +4 more
openaire +2 more sources
High-precision radiocarbon dating of the construction phase of Oakbank Crannog, Loch Tay, Perthshire [PDF]
, 2010 Many of the Loch Tay crannogs were built in the Early Iron Age and so calibration of the radiocarbon ages produces very broad calendar age ranges due to the well-documented Hallstatt plateau in the calibration curve. However, the large oak timbers that
Dixon, T.N. +5 more
core +9 more sources
Uranium-Lead dating of hominid fossil sites in South Africa [PDF]
, 2005 Discoveries of hominid, or apeman, fossils in the twentieth century have brought human evolution into the scientific spotlight. It is important that ages are assigned to such hominids so that their place in human evolution can be established.
Walker, Joanne
core +7 more sources
Re‐Os isotope systematics in carbonates from Serpent Mound, Ohio: Implications for Re‐Os dating of crustal rocks and the osmium isotopic composition of Ordovician seawater [PDF]
Geochemistry, Geophysics, Geosystems, 2004 Eleven core samples of Ordovician carbonates and shale from within and nearby the Serpent Mound (Ohio) cryptoexplosion structure were analyzed for Re‐Os isotopes. Whole‐rock samples span a large range in measured 187Os/188Os (0.714 to 6.083), and exhibit a linear correlation of 187Os/188Os with 187Re/188Os.
Elisabeth Widom +2 more
openaire +1 more source
Journal of Natural Gas Geoscience, 2020 Re–Os geochronometer has been used in the dating of generation-accumulation, thermal cracking, and thermochemical sulfate reduction of crude oil and the oil-source correlation of petroleum systems in recent years.
Yanming Sai +5 more
doaj +1 more source
Constraining the geothermal parameters of in situ Rb–Sr dating on Proterozoic shales and their subsequent applications [PDF]
Geochronology, 2022 Recent developments in tandem laser ablation mass spectrometer technology have demonstrated the capacity for separating parent and daughter isotopes of the same mass online.
D. Subarkah +12 more
doaj +1 more source
A Review of Research Progress on Re-Os Isotopic System of Carbon-enriched Geological Samples
Yankuang ceshi, 2023 Re and Os are relatively enriched in organic-enriched sedimentary rocks under an anoxic environment due to their organophilic property, and the seawater Os isotopic composition is recorded during the deposition of sedimentary rocks.
LI Xinwei +4 more
doaj +1 more source
Solid Earth Sciences, 2022 South China developed large-scale Mesozoic magmatism and polymetallic mineralization, especially Jurassic W-Sn and Mo-W mineralization. Compared with W-Sn deposits, Mo-W deposits in South China have received less attention.
Lipeng Zhang +6 more
doaj +1 more source
Re-Os geochronology for sulfides and organic-rich sediments. [PDF]
Natl Sci RevRhenium and osmium are both siderophilic and chalcophilic, exhibiting a strong affinity for organic-rich materials. This makes the Re-Os chronometer a valuable complement to geochronometers based on lithophile elements.
Li Y, Glorie S, Selby D.
europepmc +2 more sources
Supplemental Material: Protogenetic sulfide inclusions in diamonds date the diamond formation event using Re-Os isotopes [PDF]
, 2021 Description of Rietveld refinements and composition of the Mss, reciprocal crystallographic orientations and Os diffusion model, unit-cell parameters of pyrrhotite single crystals, and orientation matrices for both inclusions and hosts.<br>
et al., Martha Pamato
openaire +2 more sources