Clay minerals are considered the most important components of clastic reservoir rock evaluation studies. The Shurijeh gas reservoir Formation, represented by shaly sandstones of the Late Jurassic-Early Cretaceous age, is the main reservoir rock in the Eastern Kopet-Dagh sedimentary Basin, NE Iran. In this study, X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopic (S...

Red beds, conglomerates and salt were considered azoic and problematic rocks, but Paleopalynology and Inorganic Geochemistry proved to be useful for placing them in time and space. In the early last century, in Mexican NE region, only three Mesozoic red bed units were differentiated, dated as Late Triassic to Late Jurassic. It was important tratigraphically to place them properly as they were c...

Clay mineral authigenesis at continental margins plays an important role in global marine element cycles. However, despite being increasingly used as tracers for both modern and past oceanographic conditions, the behavior of rare earth elements (REEs) their isotopes during clay still remains poorly known. In this study, we report on a detailed geochemical investigation glauconite from West Afri...

clay minerals are considered the most important components of clastic reservoir rock evaluation studies. the shurijeh gas reservoir formation, represented by shaly sandstones of the late jurassic-early cretaceous age, is the main reservoir rock in the eastern kopet-dagh sedimentary basin, ne iran. in this study, x-ray diffraction (xrd), x-ray fluorescence (xrf), scanning electron microscopic (s...

In (Part I), it was stated that red beds, conglomerates and salt were considered azoic and problematic rocks, but Paleopalynology and Inorganic Geochemistry proved to be useful for placing them in time and space. In the early last century, in Mexican NE region, only three Mesozoic red bed units were differentiated, dated as Late Triassic to Late Jurassic. It was important stratigraphically to p...

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. iii Figures 1-4. Maps showing: 1. Study area, regions within the study area, and all well...

Abstract In this study, it is aimed to characterize the Early pliocene sandstone (EP-SD) and Late Miocene-Early Pliocene Mangaa reservoirs efficiency of their sealing cap rocks using petrographical petrophysical data these zones in northern Taranaki basin, New Zealand. The prospective potential were studied impregnated thin sections, XRD analysis, well log (self-potential, gamma-ray, sonic, den...

Abstract Very primitive ultramafic igneous rocks occur at Mt. La Queglia (Abruzzo, Italy). They form a strongly deformed sill–dyke system now tilted vertically. These were initially classified as alnöite and, subsequently, have been suggested to be carbonatitic olivine melilitite. However, further investigation and interpretation of these is needed due the presence hand-specimen-scale textural ...

Glaucony occurrences have been reported both from exposed transgressive and overlying highstand system tracts. However, its within deposits are often invoked as the result of underlying condensed section reworking. Detailed textural, mineralogical geochemical reports glaucony grains in remain elusive. The northern Gulf Cadiz shelf (SW Iberia) offers a unique opportunity to investigate late Holo...

introduction oolitic iron formations are sedimentary rocks with >5 vol.% oolites and >15 wt.% iron, corresponding to 21.4 wt.% fe2o3 (young, 1989; petranek and van houten, 1997; mucke and farshad, 2005). in iran, new iron oolite-bearing members have been identified in the lashkarak formation (lower-middle ordovician) in the abarsej, dehmola and simehkuh sections, eastern alborz (ghobadi pour et...