Formation micro imager (FMI) can directly reflect changes of wall stratums and rock structures. Conventionally, FMI images mainly are analyzed with manual processing, which is extremely inefficient and incurs a heavy workload for experts. Iranian reservoirs are mainly carbonate reservoirs, in which the fractures have an important effect on permeability and petroleum production. In this paper, a...

1 A Case Study on Data Quality, Privacy, and Evaluating the Outcome of Entity Resolution Processes Pei Wang, University of Arkansas at Little Rock, Little Rock, AR, USA Daniel Pullen, University of Arkansas at Little Rock, Little Rock, AR, USA Fan Liu, University of Arkansas at Little Rock, Little Rock, AR, USA William C. Decker, University of Arkansas at Little Rock, Little Rock, AR, USA Ningn...

The assumptions of conventional whole-rock and mineral isochron radioisotope dating were tested using a suite of radioisotopes from two Precambrian rocks. Amphibolite from the Beartooth Mountains of Wyoming shows evidence of thorough metamorphism by isochemical processes from andesite by an early Precambrian magma-intrusion event. A diabase sill, exposed within the wall of Grand Canyon at Bass ...

During explosive eruptions, a suspension of gas and pyroclasts rises rapidly within a conduit. Here, we have analysed textures preserved in the walls of a pyroclastic feeder dyke of the AD 1886 Tarawera basaltic Plinian fissure eruption. The samples examined consist of basaltic ash and scoria plastered onto a conduit wall of a coherent rhyolite dome and a welded rhyolitic dome breccia. We exami...

Shallow bias tunnels are sensitive at the entrance section, where existence of soil–rock interface (SRI) results in more complex deformation surrounding rock and supporting structure. This study investigates mechanical properties structure a shallow-buried tunnel crossing by combination model tests numerical simulations. A biased with significant cracking its section is selected southwest China...

Abstract Using the spatial structure of external staggered split-level panel layout, a combined support technology for adjacent roadways was developed and analyzed rock bolt anchor cable mechanism. The influence side parameters on mechanical properties anchorage body stress distribution lateral coal were revealed using FLAC 3D software. optimal bolts cables subsequently determined, effect gob-s...

The organic-walled microfossil Chuaria circularis [Walcott, C.D., 1899. Precambrian fossiliferous formations. Geol. Soc. Am. Bull. 10, 199–244] Vidal and Ford [Vidal, G., Ford, T.D., 1985. Microbiotas from the Late Proterozoic Chuar Group (Northern Arizona) and Uinta Mountain Group (Utah) and their chronostratigraphic implications. Precambrian Res. 28, 349–389] from the Visingsö Group in Sweden...