Abstract Detrital zircon U-Pb studies of mudstone provenance are rare but may preferentially fingerprint distal sources. To examine this issue, Pierre Shale and Trinidad Sandstone deposited in a Late Cretaceous deltaic environment the Raton Basin, Colorado (USA), were measured for detrital age by laser ablation–inductively coupled plasma–mass spectrometry. Two major peaks at ca. 70 1690 Ma foun...

Inorganic modified green mudstone (MGM) was prepared from the (GM) residue of Fushun West Open Pit Mine and characterized by XRF, XRD, FTIR, SEM GM MGM. According to calculation pore size BET equation, specific surface area MGM were larger. The results adsorption kinetics isothermal experiments showed that capacity for phosphate increased 0.1 mg/g 0.71 mg/g, which obviously better than GM. acco...

Rock-socketed pile is widely used in coastal wharf, Marine bridge, and power engineering, the end bearing function considered more design process. However, lateral friction resistance of rock-socketed piles an important part, load transfer mechanism pile–soft rock interface research focus. In this paper, a comparative analysis was adopted test, ten groups test specimens were made, including fiv...

The stability of the gas extraction roadway is very important for safe mining coal and gas. compression arch formed by combined action prestressed bolt (cable) support surrounding rock has been widely used in engineering practice roadway. It great application value to analyze influence parameters on arch. In this paper, with deep Huainan Huaibei area Anhui Province, mechanical are measured via ...

Tidal sandstone reservoirs contain significant intervals of hydrocarbonbearing heterolithic facies, characterized by the presence of tidegenerated sedimentary structures such as flaser, wavy, and lenticular bedding (millimeter to centimeter sand-mud alternations). We have characterized the reservoir properties (sandstone connectivity, effective permeability, and displacement efficiency) of thes...

Previous studies of spatial patterns among fossil assemblages have demonstrated the utility of gradient analysis as a n investigative tool inpaleobiology. However, because lateral samples in these studies have routinely been widely spaced (commonly tens of kilometers apart), there is little sense of the degree to which faunas vary locally, relative to variation observed a t larger scales along ...

The Nam Pat Group of the Nam Pat Basin, Uttaradit Province, Thailand is situated in the Nan Suture Zone. Two contrasting tectonic framework models of the Nan Suture have previously been proposed: as a main Paleo-Tethyan suture and as a remnant of a closed back-arc basin. The goal of this study is to analyze the tectonic framework of the Nan Suture and reevaluate the existing tectonic models. Th...

Water injection-induced rock softening and the associated water seepage characteristics are common basic problems in underground reservoir construction prevention of mine disaster. In this paper, a series experimental studies was carried out to investigate these with weakly cemented sandy mudstone collected from Shendong Buertai coal mine, China. The stress-seepage interactions water-saturated ...

The mechanic and permeability behavior in sandy mudstone is crucial to hazard prevention safety mining. In this study, investigate the evolution characteristic of mechanical properties subjected loading in-site stress, a series triaxial compression–seepage experiments are performed. increase decrease strength gradually transformed responding confining stress from 5 15 MPa, which corresponds tra...