Results 11 to 20 of about 212,947 (357)

Chlorite in sandstones

, 2020
Chlorite, an Fe- and Mg-rich aluminosilicate clay, may be either detrital or authigenic in sandstones. Detrital chlorite includes mineral grains, components of lithic grain, matrix and detrital grain coats.
R. Worden, J. Griffiths, L. Wooldridge, J. Utley, A. Lawan, D. Muhammed, N. Simon, P. Armitage   +7 more
semanticscholar   +1 more source

Impacts of Pore-Throat System on Fractal Characterization of Tight Sandstones

Geofluids, 2020
The pore-throat structures play a dominant role in the evaluation of properties of tight sandstone, but it remains difficult to determine the related parameters and understand their impact on reservoir quality.
Dengke Liu, Z. Gu, R. Liang, Junwei Su, Dazhong Ren, Bin Chen, Chuanqing Huang, Chao Yang   +7 more
semanticscholar   +1 more source

Experimental study of enhanced oil recovery by CO2 huff-n-puff in shales and tight sandstones with fractures

Petroleum Science, 2020
The fractures and kerogen, which generally exist in the shale, are significant to the CO2 huff-n-puff in the shale reservoir. It is important to study the effects of fractures and kerogen on oil recovery during CO2 huff-n-puff operations in the fracture ...
Chaofan Zhu, W. Guo, You Wang, Yajun Li, Houjian Gong, Long Xu, M. Dong   +6 more
semanticscholar   +1 more source

Tracing Old Gestures: A Multiscale Analysis of Ground Stone Tools Developed on Sequential Lab-Controlled Replicative Experiments

Heritage, 2023
This article presents an analytical procedure developed to replicate, document, and analyse the formation and evolution of use-wear traces on task-specific ground stone tools. The purpose of this study is to build a reference collection for wear patterns
Giusi Sorrentino, Laura Longo, Theodor Obada, Alessandro Borghi, Alessandro Re, Marco Paggi, Alessandro Lo Giudice   +6 more
doaj   +1 more source

Variscan sourcing of Westphalian (Pennsylvanian) sandstones in the Canobie Coalfield, UK [PDF]

, 2010
The zircon age spectrum in a sample from the Canonbie Bridge Sandstone Formation (Asturian) of southern Scotland contains two main peaks. One is Early Carboniferous in age (348– 318 Ma), and corresponds to the age of igneous activity during the ...
ANDREW MORTON, Barrett, Besly, Bishop, Cope, Day, Guerrot, Heckel, Ludwig, Ludwig, Lumsden, MARK FANNING, Morton, Nance, NEIL JONES, Powell, Ramsbottom, Roach, Simpson, Strachan, Trueman, Waters   +21 more
core   +1 more source

Composition and formation conditions of the Upper Riphean terrigenous rocks (Dzhezhimparma Uplift, Southern Timan)

Известия высших учебных заведений: Геология и разведка, 2017
The results of the study of the composition of the Upper Riphean terrigenous rocks of Dzhezhimparma Uplift at Southern Timan have been presented. On the basis of the lithological, geochemical and mineralogical data, the sedimentary material has been ...
N. Yu. Nikulova
doaj   +1 more source

Alluvial to lacustrine sedimentation in an endorheic basin during the Mio-Pliocene: The Toro Negro Formation, Central Andes of Argentina [PDF]

, 2018
A 2400 m-thick sedimentary column belonging to the Toro Negro Formation was recorded along the Quebrada del Yeso, Sierra de Los Colorados (Vinchina Basin), La Rioja province, NW Argentina. The Vinchina basin is a good example of a closed basin surrounded
Amidon, William H., Ciccioli, Patricia Lucia, Kylander Clark, Andrew, Limarino, Carlos Oscar, Marenssi, Sergio Alfredo   +4 more
core   +1 more source

Petrophysical characteristics of the sandstones used in the construction of the Monumental Heritage of Ciudad Rodrigo, Salamanca. Spain

Materiales de Construccion, 2003
Knowledge of the petrophysical characteristics of stones used in construction is evidently advantageous in the sense that it can help avoid wasting time and future disappointments when attempting to assess the results both in restoration work and in ...
M. J. Varas, E. Molina, M. A. Vicente
doaj   +1 more source

Taphonomy and paleoecology of fauna and flora from deltaic sandstones of Mospinka Formation (Middle Carboniferous) of Donets Basin

Geo&Bio, 2019
The taphonomic and ecological features of the predominantly non-marine fauna and terrestrial flora from two deltaic sandstones in the middle part of the Mospinka Formation (Upper Bashkirian, Lower Pennsylvanian) were studied.
Vitaliy Dernov
doaj   +1 more source

Provenance reconstructions. Article 3. Modern research methods for heavy detrital minerals (garnet, tourmaline, chromespinelide, rutile, chloritoid, pyroxene and amphibole)

Литосфера, 2020
Research subject. This article considers accessory minerals, which, unlike zircons, are present in the vast majority of common clastic rocks. Materials and methods.
L. V. Badida, A. V. Maslov, G. A. Mizens
doaj   +1 more source