In this study, petrological, structural, geochemical, and geochronological analyses of the Statherian alkali feldspar granite porphyritic in southwestern part Korean Peninsula were conducted to examine petrogenesis granitoids their tectonic setting. Zircon U-Pb dating revealed that two granites formed around 1.71 Ga 1.70–1.68 Ga, respectively. The results geochemical showed both have a high con...

In this study, petrological, structural, geochemical, and geochronological analyses of the Statherian alkali feldspar granite porphyritic in southwestern part Korean Peninsula were conducted to examine petrogenesis granitoids their tectonic setting. Zircon U-Pb dating revealed that two granites formed around 1.71 Ga 1.70–1.68 Ga, respectively. The results geochemical showed both have a high con...

Abstract Poor drinking water quality in household wells is hypothesised as being a potential contributor to the high prevalence of chronic kidney disease uncertain aetiology (CKDu) among farming communities Medawachchiya area, Anuradhapura, Sri Lanka. One natural processes that can affect dissolution minerals contained within an aquifer by water–rock interactions (WRIs). Here we present compreh...

Changes in the enantiomer ratios (ERs) of chiral pollutants in the environment are often considered evidence of biological alteration despite the lack of data on causal or mechanistic relationships between microbial parameters and ER values. Enantiomer ratios that deviate from 1:1 in the environment provide evidence for the preferential microbial degradation of one enantiomer, whereas ER values...

The spatial distributions of anthropogenic 129I and natural 127I in iodide (I−) iodate (IO3−) were investigated the upper central Arctic Ocean. results show that molecular ratios reductive to oxidative ranged from 0.228 0.560 for 0.383 0.827 Polar Mixed Layer (PML). Greater 127I− concentrations markedly higher I−/IO3− both found PML over Lomonosov Alpha Ridges. This suggests in-situ formation I...

The vast majority of antibiotic resistant genes (ARG) acquired by human pathogens have originated from the natural environment. Therefore, understanding factors that influence intrinsic levels of ARG in the environment could be epidemiologically significant. The selection for metal resistance often promotes AR in exposed organisms; however, the relationship between metal levels in nature and th...

The Bonaparte project is a multi-year bedrock mapping program initiated by the British Columbia Geological Survey during the 2000 field season. The project is focused on Mesozoic arc volcanic and plutonic rocks of the Quesnel Terrane in the northeastern part of the Bonaparte Lake (92P) map sheet (Figure 1). This area encompasses a northwest-trending belt of high mineral potential that includes ...

During cruise SO 58 of the FRG research vessel Sonne in 1988, surface sediments were collected from the deep waters of the Sulu Trench (Philippines) for organic geochemical investigations. The purpose of geochemical analyses of surface sediments is to obtain information on the nature and origin of gaseous hydrocarbons detected in these sediments and from this information to estimate the hydroca...

a r t i c l e i n f o As most bivalve mollusks are filter feeders or deposit feeders—predatory septibranchs (Poromyacea) being the notable exception—they are closely linked with the activity of primary producers. Perhaps this is nowhere more evident than in shallow water habitats influenced by seasonal phytoplankton blooms. In these systems, photoautotrophs are capable of changing the physical ...

Variations in the geochemistry and mineralogical compositions of ferromanganese (Fe-Mn) nodules are closely related to variations environmental parameters. Therefore, analysis Fe-Mn can reconstruct paleo-ocean environment. Here, three differently shaped were collected from open seamount 9-1 western Pacific Magellan Seamount. Geochemical analyses conducted using micro X-ray fluorescence (μ-XRF) ...