Abstract We report paleomagnetic records of Matuyama–Brunhes geomagnetic polarity reversal and associated key tephra layers from the Early–Middle Pleistocene marine sedimentary succession in Boso Peninsula. The outcrop is Terasaki, Chiba, Japan ~ 25 km northeast Chiba section. sediment consists a massive siltstone layer Kokumoto Formation, Kazusa Group. A was identified middle with chemical com...

The Merced Formation comprises a 2-km-thick shallow marine and non-marine succession that was deposited in a small transtensional basin along the San Andreas Fault during the late Pliocene to middle Pleistocene. The sediments dip between 10j and 80j to the northeast, and are locally disrupted by small faults. During tilting, the beds have been rotated into subparallelism with the San Andreas Fa...

The Idaho Transportation Department (ITD) commissioned a geophysical study to aid in the design of a replacement for an existing concrete span bridge. Because the river current was too swift to place geophones in the river, the solution was to shoot p-wave profiles in a reciprocal geometry (phones on land, shots in the river). In addition to the refraction work, a down-hole seismic profile was ...

the sanganeh formation crops out throughout the kopeh-dagh basin and is mainly composed of shale and marl with interbeds of siltstone and limestone. in this study, the sanganeh formation, with 550 meter thickness, has been studied at north of the sanganeh village in eastern parts of the basin. according to distribution of organic matter content, four palynofacies types are identified. the main ...

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...