Abstract
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) was used to analyze chemical elements—major, trace and rare earth elements (REE) concentrations, augmented with quantitative X-ray diffraction (XRD) analysis and thin-section petrography for mineralogical characterization of the Triassic Montney Formation in northeastern British Columbia, Western Canada Sedimentary Basin (WCSB). Results from this study indicate that integration of chemical elements with mineralogy shows affinity to the host lithologies. Evidently, chemical elements are the building blocks for minerals, thus, their significances in the interpretation of geological systems are unambiguous. Herein, major elements concentration such as Al, Fe, K, Mg, Ca, Mn in the samples analyzed from the Montney Formation are interpreted as: 1) indication of dolomitization and diagenesis; 2) trace elements—Rb, Th, U, and Cs are related to the organic matter—kerogen in the clay component of the Montney Formation source rock; and 3) transition metals—Sc, V, Co, Cr, Zn show strong affinity with diagenesis in the study interval.
Highlights
IntroductionThe term trace element in geochemistry refers to chemical elements whose concentration is less than 1000 ppm or 0.1% of a rock’s composition [1] [2], and concentration greater than the aforementioned values refers to ma-
The term trace element in geochemistry refers to chemical elements whose concentration is less than 1000 ppm or 0.1% of a rock’s composition [1] [2], and concentration greater than the aforementioned values refers to ma-How to cite this paper: Egbobawaye, E.I. (2016) Whole-Rock Geochemistry and Mineralogy of Triassic Montney Formation, Northeastern British Columbia, Western Canada Sedimentary Basin
This paper evaluate the Triassic Montney Formation dolomitization and diagenesis using chemical elements whole-rock geochemistry coupled with whole-rock mineralogy and thin-section petrography in order to better understand the Montney Formation dolomitization and diagenesis
Summary
The term trace element in geochemistry refers to chemical elements whose concentration is less than 1000 ppm or 0.1% of a rock’s composition [1] [2], and concentration greater than the aforementioned values refers to ma-. (2016) Whole-Rock Geochemistry and Mineralogy of Triassic Montney Formation, Northeastern British Columbia, Western Canada Sedimentary Basin. Many paleoclimatic studies have utilized chemical elements such as Aluminum (Al), Manganese (Mn), and Barium (Ba) concentrated in the rock record to unravel paleoclimate and tectonic regimes [5] [7]-[9] These studies have led to better understanding of the changes that causes chemical weathering in source areas and help to show the variation in climatic changes in ancient rocks on a geological time scales [10] [11]. The application of whole-rock elements geochemistry are numerous in geological interpretation, its utility in the study of Triassic Montney Formation. This paper evaluate the Triassic Montney Formation dolomitization and diagenesis using chemical elements whole-rock geochemistry coupled with whole-rock mineralogy and thin-section petrography in order to better understand the Montney Formation dolomitization and diagenesis
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