Results 41 to 50 of about 84,535 (249)

U–Pb dating and Sm–Nd isotopic analysis of granitic rocks from the Tiris Complex : new constaints on key events in the evolution of the Reguibat Shield, Mauritania [PDF]

, 2012
The Reguibat Shield of N Mauritania and W Algeria represents the northern exposure of the West African Craton. As with its counterpart in equatorial West Africa, the Leo Shield, it comprises a western Archaean Domain and an eastern Palaeoproterozoic ...
Abdouloye, T.B., Darbyshire, F., Gillespie, M., Horstwood, M.S.A., O'Connor, E.A., Pitfield, P.E.J., Schofield, D.I.   +6 more
core   +1 more source

Characteristics of the deforming bed: till properties on the deglaciated Antarctic continental shelf

Journal of Glaciology, 2018
Contemporary ice stream flow is directly linked to conditions at the ice/bed interface, yet this environment is logistically difficult to access.
ANNA RUTH W. HALBERSTADT, LAUREN M. SIMKINS, JOHN B. ANDERSON, LINDSAY O. PROTHRO, PHILIP J. BART   +4 more
doaj   +1 more source

Evolution of structures and hydrothermal alteration in a Palaeoproterozoic supracrustal belt: Constraining paired deformation–fluid flow events in an Fe and Cu–Au prospective terrain in northern Sweden [PDF]

Solid Earth, 2020
An approximately 90 km long Palaeoproterozoic supracrustal belt in the northwestern Norrbotten ore province (northernmost Sweden) was investigated to characterize its structural components, assess hydrothermal alteration–structural geology ...
J. B. H. Andersson, T. E. Bauer, E. P. Lynch   +2 more
doaj   +1 more source

Ar-40/Ar-39 dating of mesothermal, orogenic mineralization in a low-angle reverse shear zone in the Lower Palaeozoic of the Anglo-Brabant fold belt, Belgium [PDF]

, 2002
A
Boven, A., Dewaele, Stijn, Muchez, Ph.
core   +2 more sources

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

Journal 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., Salvi, S., Beziat, D., Siebenaller, Luc, Baratoux, Lenka, Jessell, Mark   +5 more
openaire   +3 more sources

Rupture by damage accumulation in rocks [PDF]

, 2006
The deformation of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage and its spatial localization lead to the creation of a macroscale discontinuity, so-called "fault" in geological terms, and to the
A Buchel, A Guarino, A Johansen, A Lin, AM Boullier, B Gutenberg, B Menendez, B Velde, C Marone, C Nicholson, C Scavia, CA Tang, CA Tang, CAJ Wibberley, CG Bufe, CG Sammis, CH Scholz, CH Scholz, D Amitrano, D Place, D Sornette, DA Lockner, DA Lockner, DA Lockner, David Amitrano, DE Moore, E Bouchaud, E Bouchaud, EM Schulson, F Kun, GCP King, H Nechad, HL Li, IG Main, J Biarez, J Kemeny, J Mori, J Rice, J Schmittbuhl, J Schmittbuhl, J Weiss, J Weiss, JC Jaeger, JVA Keller, JW Rudnicki, K Chen, K Mair, K Michibayashi, K Mogi, LS Costin, M Gerstenberger, P Cowie, P Grassberger, RL Kranz, RP Young, S Zapperi, S Zapperi, SC Jaume, SJD Cox, SR Brown, T Hirata, W Wang, YC Wang, Z Olami, Z Reches   +64 more
core   +4 more sources

Influence of hydrodynamic processes on the fate of sedimentary organic matter on continental margins [PDF]

, 2018
Understanding the effects of hydrodynamic forcing on organic matter (OM) composition is important for assessment of organic carbon (OC) burial in marginal seas on regional and global scales.
Aller, Aller, Arnarson, Bao, Bao, Bauer, Bianchi, Bianchi, Bianchi, Blair, Blair, Blair, Bröder, Burdige, Burdige, Cameron McIntyre, Canuel, Cartapanis, Cathalot, Chen, Coppola, Cui, Daniel B. Montluçon, Drenzek, Eglinton, Galy, Gao, Goñi, Griffith, Guo, Harris, Hedges, Hilton, Hilton, Hwang, Inthorn, Kao, Keil, Keil, Kusch, Kusch, Leithold, Li, Lie, Liu, Liu, Liu, Liu, Luo, Marwick, Mayer, McCave, McCave, McCave, Meixun Zhao, Milliman, Mollenhauer, Mollenhauer, Mollenhauer, Mollenhauer, Mollenhauer, Mollenhauer, Muller-Karger, Nuwer, Ohkouchi, Pawlowicz, Pedrosa-Pàmies, Qiao, Rui Bao, Saito, Shah, Stuiver, Su, Tao, Tao, Tesi, Tesi, Tesi, Tesi, Tessa S. van der Voort, Thomsen, Thomsen, Timothy I. Eglinton, Voort, Wagner, Wakeham, Wang, Wang, Wang, Wang, Wang, Wang, Wu, Xinyu Guo, Xu, Yang, Yang, Yang, Yang, Yao, Yao, Zhu, Zonneveld   +102 more
core   +1 more source

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

Energy 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, Hongkui Ge, Dengwei Fu, Xiaoqiong Wang, Yinghao Shen, Zhenxin Jiang, Jianbo Wang   +6 more
doaj   +1 more source

Deformation in Moffat Shale detachment zones in the western part of the Scottish Southern Uplands [PDF]

, 2004
A study of the décollement zones in the Moffat Shale Group in the Ordovician Northern Belt of the Southern Uplands of Scotland reveals a progressive sequence of deformation and increased channelization of fluid flow.
Needham, D.T.
core   +1 more source

The Rwenzori Mountains, a Paleoproterzoic crustal shear belt crossing the Albertine rift system [PDF]

, 2015
This contribution discusses the development of the Paleoproterozoic Buganda-Toro belt in the Rwenzori mountains and its influence on the western part of the East African Rift System in Uganda.
Aanyu, K., Harbinson, R., Koehn, D., Link, K., Passchier, C.W., Sachau, T., Spikings, A.   +6 more
core   +1 more source