Results 101 to 110 of about 1,126 (271)
Concordant ages for the giant Kipushi base metal deposit (DR Congo) from direct Rb-Sr and Re-Os dating of sulfides [PDF]
, 2018 We report concordant ages of 451.1 ± 6.0 and 450.5 ± 3.4Ma from direct Rb-Sr and Re-Os isochron dating, respectively, of ore-stage Zn-Cu-Ge sulfides, including sphalerite for the giant carbonate-hosted Kipushi base metal (+Ge) deposit in the ...
Melcher, Frank +2 more
core
Application of Re-Os Geochronolgy to Offshore California Basins
, 2020 The rhenium-osmium (Re-Os) isotope system has historically been used with geochronological applications in the dating of igneous and metamorphic rocks, and in constraining the Earth’s geochemical evolution.
Silva, Leiser Guillermo 1992-
core
Angewandte Chemie International Edition, EarlyView.Electroenzymatic CO2 fixation enables energy‐efficient, highly selective synthesis of complex molecules. Unlocking its full potential requires fundamental understanding of electrode‐coupled reductases and carboxylases. This review critically discusses available enzymes, product scope, and key thermodynamic and kinetic considerations, highlighting ...
Leonardo Castañeda‐Losada +4 more
wiley +1 more source
, 2015 Tephrochronology, the characterisation and use of volcanic-ash layers as a unique chronostratigraphic linking, synchronizing, and dating tool, has become a globally-practised discipline of immense practical value in a wide range of subjects including ...
Lowe, David J.
core
, 2020 The newly-discovered supergiant Huayangchuan uranium (U)-polymetallic (Sr, Se, REEs, Ba, Nb and Pb) deposit is located in the Qinling Orogen, central China.
Chen, Xi +5 more
core +1 more source
Isotopic dating and geochemical characterization of petroleum system events: case studies from the McArthur, Tarim and Sichuan Basins [PDF]
, 2019 This PhD project has examined the behaviour and applicability of Re-Os and Rb-Sr isotope systems for dating and characterizing petroleum systems. Through case studies of ancient petroleum systems in the McArthur, Tarim and Sichuan Basins, outcomes of the
Li, Shaojie
core
, 2005 In mineral deposits the application of the Re-Os system has evolved on two fronts; as a geochronometer in molybdenite, and as a tracer of the source of metals by direct determination of the source of Os contained in the ore minerals.
Barra-Pantoja, Luis Fernando
core
, 2015 The Guilingou porphyry molybdenum deposit in Zhen ' an City, Shaanxi Province is located in the southern Qinling polymetallic belts. The wall rocks of the deposit mainly consist of fine-grained granite, K-feldspar granite and altered coarse-grained ...
Zhai MingGuo +5 more
core
Amino acid racemization dating: Method development using African ostrich (Struthio camelus) eggshell [PDF]
, 2013 Ostrich eggshell (OES) is ubiquitous in archaeological sites in Africa and is a favoured substrate for amino acid racemisation (AAR) geochronology, yielding consistent results and thought to approximate a closed system with respect to protein diagenesis.
Crisp, Molly Katherine
core
, 2019 Precisely dating different generations of mineralization is important for understanding the origin and tectonic environment of ore formation. In this study, we have dated two generations of sulfides from the Lala Fe-Cu deposit, SW China, using in situ Pb-
Li, Xiaochun +5 more
core +1 more source