Results 101 to 110 of about 208,504 (261)

Sandstone [PDF]

Geology Today, 2008
openaire   +1 more source

Physical and mechanical properties of weathered sandstone rock-like materials under freeze-thaw cycles

Građevinar
Block stone structural layers are commonly utilized in roadbed projects within permafrost areas. However, due to significant temperature fluctuations and frequent freeze-thaw cycles, some of these rock layers have weathered and fractured.
Zhang Zhen, Wang Qingzhi, Zhang Kui, Fang Jianhong   +3 more
doaj   +1 more source

Hepaticae of Cerro Venamo, Venezuela, collected by J. Steyermark [PDF]

, 2002
A revision of herbarium material (NY) from Cerro Venamo, Venezuela (5°59’ N, 61°23’ W, 1890 m) yielded 77 hepatic species in 44 genera and 13 families. Most species have a neotropical distribution (75,32%), 6,49%, are pantropical and 9,09% are reported ...
Borges, Anna Luiza Ilkiu, Dauphin, Gregorio   +1 more
core  

Tracking sea bed topography in the Jurassic. The Lotena Group in the Sierra de la Vaca Muerta (Neuquén Basin, Argentina) [PDF]

, 2005
The Lotena Group is a clastic to evaporitic unit up to 650 m thick that accumulated during the Middle to Late Jurassic in the Neuquén Basin, western Argentina.
Zavala, Carlos Alberto
core   +1 more source

Lead, zinc and copper mineralisation in basal Carboniferous sediments at Westwater, south Scotland [PDF]

, 1977
A zioneo f lead, zinc and copperm ineralisatioins developedo ver a minimum I of 4 km of strikeo f basal Carboniferoucse mentstoneg roup sedimentsa nd immediatelyu nderlyingB irrenswarkL avas atwestwater,n ear Laqholm in south Scotland.
Davies, A., Easterbrook, G.D., Fortey, N.J., Gallagher, M.J., Parker, M.E., Smith, R.T.   +5 more
core  

Effective flow properties of heterolithic, cross-bedded tidal sandstones: Part 2. Flow simulation [PDF]

, 2016
Hampson, GJ, Jackson, MD, Johnson, HD, Massart, BYG   +3 more
core   +1 more source

Estimation of Uniaxial Compressive Strength and Tensile Strength of Sandstone Based on Point Load

Renmin Zhujiang
In rock mechanics and engineering practice, accurate and rapid evaluation of uniaxial compressive strength and tensile strength of rock is important for engineering design and construction safety. Traditional test methods are time-consuming and laborious,
LIU Yongzhi, FANG Qingyao, ZHANG Kun, YAO Huayan, LIU Wu, LIU Guang   +5 more
doaj  

Study on the mechanical behavior and fracturing mechanism of rock containing two unparallel prefabricated fissures under uniaxial loading. [PDF]

PLoS One
Li J, Wei Y, Wang T.
europepmc   +1 more source

Evolution mechanism of pore structures in sandstone under coupled effect of hygrothermal cycles and Na₂SO₄ solution. [PDF]

Sci Rep
Geng J, Li X, Wu Y, Yang X, Wu J.
europepmc   +1 more source

New In Situ Amphipathic Polymerization-Modified Titanium Quantum Dots: Application as a High-Performance Water-Lock-Breaking Agent in Tight Gas Reservoirs. [PDF]

Molecules
Li H, Xu H, Yue L, Zhou Y, Li Y, Wang K, Tao C, Yang B, Chai L, Feng H.   +9 more
europepmc   +1 more source