Pofadder shear zone

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August undefined, 2024

WebJun 1, 2016 · The Pofadder Shear Zone is a ∼ 500 km long, dextral, strike-slip shear zone located in Southern Namibia and South Africa ( Joubert, 1974, Toogood, 1976, Coward, 1980, MacClaren, 1988, Macey et al., 2014 ). The age of deformation is bracketed between 1000 ± 5 Ma and 958 ± 5 Ma by U Pb monazite ages from syn-tectonic pegmatites (Lambert, 2013). WebJul 1, 2024 · Detailed mapping and microstructural observations in the Pofadder Shear Zone (Namibia and South Africa) reveal a lithologically heterogeneous shear zone core with quartz-rich mylonites and ultramylonites, plastically overprinted pseudotachylyte and …

Friday fold: Pofadder shear zone mylonites in 3D

WebAug 1, 2024 · The KMZ is part of the Marshall Rocks-Pofadder shear zone system (MRPSZ), subparallel to the Southern Namaqua Front (SNF) and the Lord Hill - Excelsior Shear Zone (LHESZ) (b). In the study area, the KMZ is exposed over a 2 by 5 km area (shape of mapped area is a function of Quaternary sands coverage), with Tsirub Gneiss (TG) in the NE, the … Webwind velocity for each wind load zone is the “fastest-mile” wind velocity, in miles per hour, … difference between bem and iem

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WebThe Pofadder Shear Zone is associated with the terminal stages of the Mesoproterozoic … WebThe microstructure of an adamellite deformed in a shear zone at higher temperature, under conditions of amphibolite facies metamorphism is indicative of dominant dislocation creep. A low degree of tectonic grain refinement is present. forget wifi password windows 11

The Geology of the area east of Pofadder with emphasis on …

WebJul 1, 2024 · Detailed mapping and microstructural observations in the Pofadder Shear … WebDetailed mapping and microstructural observations in the Pofadder Shear Zone (Namibia and South Africa) reveal a lithologically heterogeneous shear zone core with quartz-rich mylonites and ultramylonites, plastically overprinted pseudotachylyte and active shear folds. difference between benadryl and cetirizineWebFeb 28, 2024 · Role of myrmekite and associated deformation fabrics in controlling … forget wifi windows 11

"WebJun 17, 2014 · Microbreccia from the Pofadder Shear Zone in South Africa. Previous mylonitization is visible in the breccia clasts. The host rock is a metagranite and the photomicrograph was taken under cross-polarized … " - Pofadder shear zone

Pofadder shear zone

The lithostratigraphy and structural components of the Eureka Shear …

WebThe term “shear load” refers to the amount of force applied to a post frame building that … WebFeb 11, 2024 · The architecture and kinematics of the deep-crustal, transcurrent Pofadder …

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WebJun 22, 2024 · The KMZ is part of the Marshall Rocks-Pofadder shear zone system, which extends for 550 km across Namibia and South Africa in rocks of the Namaqua Metamorphic Complex (Miller & Becker, 2008). The KMZ is localized in 1250-1100 Ma orthogneisses of the Aus Domain. To the NE of the KMZ, the Tsirub Gneiss comprises garnet-bearing tonalitic … WebPofadder shear zone system (MRPSZ, afterMiller,2008) that extends for more than 550km from the Atlantic coast north of the town of Lüderitz in Namibia to its southern termination near the town of Pofadder in South Africa (Fig.1;Moen and Toogood,2007;Miller,2008). The MRPSZ strikes WNW– ESE and exhibits a dextral sense of strike-slip displacement

WebDec 8, 2016 · The Pofadder Shear Zone (Namibia-South Africa) is a right lateral, strike-slip structure, exhumed from the quartz brittle-plastic transition. In respect to lithology, kinematics and scale this shear zone is an ancient analog to … WebOct 19, 2012 · The folded layers are mylonites of the Pofadder Shear Zone in South Africa. I love it when folds are expressed not only in profile, but also in three dimensions. Nothing in life could possibly be better. We’ve featured the Pofadder Shear Zone’s folded mylonites before – and that time, too, they came from a …

WebJul 19, 2024 · The foliation of mylonite in the shear zone strikes roughly N50°E and dips 7–35°NW, and the detachment fault strikes N50°E and dips 25–30°NW (Moecher and Steltenpohl 2011 ). The main detachment fault in the Eidsfjord shear zone is exposed at Slåttnes and Grønning (Fig. 1 ). WebFabrics within a 1-km-wide shear zone along the eastern margin of the Bronson Hill …

WebSep 3, 2016 · Abstract. The Marshall Rocks-Pofadder Shear Zone (MRPSZ) forms one of …

WebThe zones are elongate parallel to the general strike of the shear zone, with ellipsoidal pods ranging in along-strike length from a few meters up to ∼100m. 3.2. Area B. Area B covers an area with the central leucogra- nite body to the NE … difference between bella and white mushroomsWebDetailed mapping and microstructural observations in the Pofadder Shear Zone (Namibia … forge twilight forestWebOct 19, 2012 · The folded layers are mylonites of the Pofadder Shear Zone in South Africa. I love it when folds are expressed not only in profile, but also in three dimensions. Nothing in life could possibly be better. We’ve … forget wikipedia password