Biostratigraphy has remained a tool for basin and environmental reconstruction in sedimentology. This study aims to further delineate classify the lithology, environment of deposition, biozonation microorganisms found studied well. Thirty-four (34) ditch cutting samples from OMA well, offshore Dahomey Basin, were considered their textural palynomorphs/palynofacies characterization. The observed...

To improve our knowledge about the geochemical and environmental aftermath of Neoproterozoic global glaciations, we analyzed stable isotopes (δC, δO, δS) and elemental concentrations (Ca, Mg, S, Sr, Fe, andMn) of the∼10-m-thick Zhamoketi cap dolostone atop the Tereeken diamictite in the Quruqtagh area, eastern Chinese Tianshan. Available chemostratigraphic data suggest that the Tereeken diamict...

Abstract Sequence stratigraphy and Electrosequence of the Don-Field Central Swamp depobelt Niger Delta Basin, was carried out using well logs, biostratigraphic core data. The aim this study is to re-characterise revalidate reservoirs within area provide an optimum framework for predicting reservoir character, development quality distribution. Detailed petrophysical evaluation reveals proficient...

dress, I decided that I should pick something that has been a major factor, perhaps the major factor in my professional life—the world’s nickel capital, Sudbury, Ontario. On setting out in July 1957 from Britain to make a life in North America, I was fortunate to obtain a job with Falconbridge Nickel Mines Limited in one of their mines at Sudbury. In my subsequent career as a graduate student, ...

Iron isotopes have been extensively used to trace the history of microbial metabolisms and the redox evolution of the oceans. Archean sedimentary rocks display greater variability in iron isotope ratios and more markedly negative values than those deposited in the Proterozoic and Phanerozoic. This increased variability has been linked to changes in either water column iron cycling or the extent...

The study examines bioclastic carbonate contourites that arise from the broad spectrum of bottom-current related sedimentary processes ranging deposition to erosion. result intermittent accumulation sediment are thin and condensed successions with abundant hiatuses. Such deposits poorly known, since broadly accepted contourite-facies model, bi-gradational sequence, characterizes environments co...

The Xiawolong gold deposit, located in the Muping–Rushan metallogenic belt (eastern Jiaodong Peninsula), is a newly discovered deposit that developed late Early Cretaceous as fine-grained granite. Gold mineralization, which mainly occurs middle of fresh granite dikes, consists stockwork-style and disseminated ores. They are characterized by middle-high-temperature mineral assemblages, such moly...

The Pusangguo deposit (1.42 Mt @ 1.42% Cu, 0.14 1.82% Zn, 0.08 1.01% Pb, and 285.8 t Co 140 g/t Co) is the first Co-rich Cu-Zn-Pb skarn discovered in Gangdese metallogenic belt. However, trace minor element geochemistry of sulfides this has not been studied, limiting further understanding elements’ occurrence mineralization. Here, we identified four ore stages, two types sphalerites (SpI SpII) ...

Iron isotope compositions of sedimentary pyrites (FeS2) are used to constrain the redox evolution Precambrian ocean and early Fe-based metabolisms such as Dissimilatory Reduction (DIR). Sedimentary can record biotic abiotic iron reduction, which have similar ranges Fe isotopic fractionation, well post-depositional histories metamorphic overprints that modify compositions. However, some exceptio...

Ulug-Sair Au-Bi-Te-Se mineralization is one prospect for native Au in the Western Tuva, and its origin remains debated. Mineralization consists of gold–sulfide–quartz veins host sedimentary rocks (conglomerates, siltstones, shales), quartz–tourmaline, quartz–carbonate–sericite–altered rocks. To determine origin, we examined mineralogical–geochemical features, formation conditions, fluid sources...