The Shiranish Formation is cropped out in several areas northern Iraq. A stratigraphic and facies study was conducted within the Duhok region to determine sedimentary environment. Three microfacies, reflecting various subenvironments different shelf parts of deep sea, have been identified Formation. Four depositional environments are identified: slope, toe shelf, deep-sea or cratonic basin. reg...

The Asmari Formation was deposited in the foreland basin of southwest Iran (Zagros Basin). Carbonate sequences of the Asmari Formation consist mainly of large benthic foraminifera along with other skeletal and non-skeletal components. Three assemblage zones have been recognized by distribution of these large foraminifera in the study area that indicate Oligocene age (Rupelian-Chattian). Absence...

Abstract Quarries between Old Radnor and Presteigne, Welsh Borderlands, expose a Silurian nearshore succession, which onlaps rocky palaeotopography of the Neoproterozoic basement that had been uplifted along Church Stretton Fault Zone. The succession documents Aeronian to Sheinwoodian transgression an island or islands, with following sequence events: deposition shallow marine sandstones (Folly...

The stratigraphy of the South-Pole Aitken basin (SPA) interior is consistent with that of a massive impact melt sheet that differentiated to form cumulates. Spectroscopic and geophysical constraints on the stratigraphy of SPA suggest a 12.5 km thick layer of norite above ultramafic pyroxenite and dunite layers. A similar stratigraphy is produced from differentiation by crystal settling of a 50 ...

The ability to automatically generate internal models from sensed data will be of critical importance in the development of flexible, adaptive and useful unmanned underwater vehicles. The subsequent recognition of objects based on these a-priori models, which may be incomplete or partial, will also be an essential component in the success of UUV missions. This paper describes and presents exper...

In this study, four well-exposed outcrops of the Asmari Fm in the southeastern part of the Izeh Zone of the Zagros Mountains were measured and sampled. In this region, the Asmari Fm is Oligocene to Early Miocene in age as determined by large benthic foraminifera. Based on depositional geometries, biogenic contents and lateral and vertical variations of facies, three depositional models are prop...