Age and paleoenvironment of part the Damlouk Member, Ratga Formation from a surface section in Iraqi Western Desert are investigated. Twenty-nine species Larger Benthic Foraminifera (LBF) belonging to 13 genera recognized studied section. The LBF assemblage is dominated by following groups, Nummulites, Alveolina, Rotalia, Lockhartia. Two corals with fragments bryozoan, red algae mollusca had al...

abstract soil pollution with heavy metals like zinc causes increasing concerns about environment. according to distribution in soil, this study was conducted to compare zinc concentration between aggregate exteriors and interiors of some contaminated soils. aggregates were collected from 5 depths of 4 soil profiles with different textures and were separated mechanically into exterior and interi...

A detail sedimentological analysis of the Sarki Formation (Early Jurassic) in Warte and Zarwan sections Imbricated Zone, northern Iraq has been conducted for first time. The both studied are consisting dolomite, dolomitic limestone recrystallized breccia. petrographic study 80 thin analyzed outcrops showed skeletal non-skeletal components. components including ostracods, bivalves echinoderms. W...

Introduction: Secondary minerals within Martian meteorites have been the subject of intense scrutiny in order to expand our knowledge of surface and near surface processes on Mars. The coarse grained orthopyroxene cumulate meteorite ALH84001 is of particular importance for these studies, due to its ancient age (around 4.5Ga) and the complex mineralogical and chemical zoning of its approximately...

well exposed famennian, mainly carbonate rocks of the bahram formation in the vicinity of bagher abad village, central iran,yielded chondrichthyan teeth some sarcopterygii and actinopterygii teeth and fragments. three different genera were recognizedamong the chondrichthyan teeth represented by: phoebodus turnerae, ph. spp., deihim mansureae (m2, m3), stethacanthus sp..acanthodian and sarcopter...

The carbonate sedimentary record contains diverse compositions and textures that reflect the evolution of oceans and atmospheres through geological time. Efforts to reconstruct paleoenvironmental conditions from these deposits continue to be hindered by the need for process-based models that can explain observed shifts in carbonate chemistry and form. Traditional interpretations assume minerals...

-Based on ∆∑ modulator, an on-chip analog ramp generator for ADC BIST (Built-in Self Test) is presented. Technique uses the over-sample and ∆∑ noise shaping to generate the on-chip precise analog ramp with the precise control of a calibrator of ramp slope. Moreover, because of over-sample and ∆∑ noise shaping, the design of analog circuits is simplified, and is tolerant to the mismatch of techn...

in order to microfacies studies of the cretaceous deposits, a section called korkouh was selected in kerman province in central iran area. the korkouh is on the bidou formation with angular unconformity and underlain by paleogene conglomerates with an erosional surface. the studied section basically contains lime and dolomitic limestone with the thickness of 146 meters with new fossils such as ...