Results 41 to 50 of about 78,374 (299)

Contrasting stress fields on correlating margins of the South Atlantic [PDF]

open access: yes, 2015
The “passiveness” of passive continental margins across the globe is currently under debate since several studies have shown that these margins may experience a variety of stress states and undergo significant vertical movement post-breakup.
Glasmacher, Ulrich Anton   +4 more
core   +1 more source

Geology and geochemistry of the shear-hosted Julie gold deposit, NW Ghana

open access: yesJournal of African Earth Sciences, 2015
Abstract The Leo Man Craton in West Africa is host to numerous economic gold deposits. If some regions, such as the SW of Ghana, are well known for world-class mineralizations and have been extensively studied, gold occurrences elsewhere in the craton have been discovered only in the last half a century or so, and very little is known about them. The
Amponsah, P. O.   +5 more
openaire   +3 more sources

Zircon dissolution in a ductile shear zone, Monte Rosa granite gneiss, northern Italy [PDF]

open access: yes, 2008
The sizes, distributions and shapes of zircon grains within variably deformed granite gneiss from the western Alps have been studied. Zircon shows numerous indicators of a metamorphic response in both the host gneiss and a 5 cm wide continuous ductile ...
Dal Piaz   +14 more
core   +1 more source

Stress concentrations around voids in three dimensions : The roots of failure [PDF]

open access: yes, 2017
Funding This work forms part of a NERC New Investigator award for DH (NE/I001743/1), which is gratefully acknowledged. Acknowledgments The authors would like to acknowledge the reviewers, Elizabeth Ritz and Phillip Resor.
Bubeck, A.   +3 more
core   +1 more source

Numerical investigation of casing shear deformation due to fracture/fault slip during hydraulic fracturing

open access: yesEnergy Science & Engineering, 2020
The frequent occurrence of casing failure has significantly affected the development of shale gas in the Sichuan Basin. Based on engineering and geology analyses, natural fracture/fault slip leads to casing shear deformation during hydraulic fracturing ...
Hu Meng   +6 more
doaj   +1 more source

The Contribution of Near-Surface Geophysics for the Site Characterization of Seismological Stations

open access: yesApplied Sciences, 2023
The Athenet network is the network of the Seismological Laboratory of the National and Kapodistrian University of Athens. We present the geophysical investigation that has been carried out at six seismological stations of the Athenet network for their ...
John D. Alexopoulos   +6 more
doaj   +1 more source

From Ancient Techniques to Modern Solutions: In Situ Synthesis of C‐S‐H for Sandstone Conservation

open access: yesAdvanced Science, EarlyView.
Herein, this work presents a paleo‐inspired approach to synthesizing and optimizing C‐S‐H‐based grouting mortars for conserving the sandstone of Beishan Grottoes, Dazu Rock Carvings, China. By achieving an optimal recipe compatible with natural sandstone, this work demonstrates the pivotal role of hydrogen bonding in the adhesion between C‐S‐H mortars ...
Mengjun Jia   +9 more
wiley   +1 more source

Minerals in Afghanistan : the potential for copper [PDF]

open access: yes, 2006
There are around 300 documented copper deposits, occurrences and showings in Afghanistan as shown in Figure 1. A variety of styles of copper mineralisation occur in rocks ranging in age from Proterozoic to Neogene.
Benham, Antony John, Coats, Stan
core  

Inferences on modeling rainfall-induced shallow landslides from experimental observations on stratified soils [PDF]

open access: yes, 2018
Le frane superficiali indotte da pioggia (quali soil slips o debris-flows) sono una tipologia di movimento franoso che può coinvolgere i primi 2-3 metri di terreno, in genere rappresentato da coltri di alterazione eluvio-colluviali.
Montrasio, Lorella, Schilirò, Luca
core   +1 more source

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