...Figure 1. Outcrop of tremolite-actinolite-chlorite schist from Byng Volcanics, near Orange, central NSW (−33.27537, 149.19834). ...

... volcanic rocks in the Hamill Group. The Byng Formation was assigned to the Windermere Supergroup before U-Pb geochronological data from the Hamill Group were available and therefore its assignment to the Windermere Supergroup should be re-assessed, with the possibility that the Byng Formation may instead...

... basement to the early Mesozoic Quesnellia arc in Yukon and British Columbia (e.g., Simard et al., 2003 ; Nelson and Friedman, 2004 ; Roots et al., 2006 ; Nixon et al., 2020 ; Colpron et al., 2022 ). Upper Paleozoic arc successions also form the basement to Triassic arc volcanic and sedimentary rocks...

...- and microbiological activity (Monferran et al. 2021). This sequence is related to fine siliciclastic sediment input. Fine sand grains were deposited through weak tractive flows, with some episodes of ash fall and sporadic storm events. These sediments cover a paleorelief carved in a Lower Jurassic volcanic...

... and comprises synrift volcanic rocks, siliciclastic rocks, and glacio-marine diamictites (Ghadir Manquil Formation), siliciclastic rocks (Masirah Bay and Shuram Formations), carbonates (Khufai and Buah Formations), and a thick carbonate-evaporite unit (Ara Group). The Ara Group represents at least six...

... metazoans in thrombolite-stromatolite reefs in the terminal Proterozoic Nama Group, Namibia . Paleobiology 26 , 334 – 359 . Hofmann , H.J. , Mountjoy , E.W. , 2001 . Namacalathus-Cloudina assemblage in Neoproterozoic Miette Group (Byng Formation...

... the Chowika Formation by Evenchick (1988) for exposures near 57°N, occurs at a lower stratigraphic level than the shallow water carbonate platforms of the Byng Formation (Slind and Perkins, 1966; Teitz and Mountjoy, 1985) developed near the top of the upper Miette Group in the Jasper area. The Chowika...

... as Coleolella sp.; Signor et al., 1987 ; reported as Nevadatubulus ; this study), western USA; Villarta Limestone of Ibor Group, Villarta de los Montes Village, Bada-joz Province, Spain (Cortijo et al., 2015b ); Byng Formation of Miette Group, Salient Mountain area, British Columbia, Canada (Hofmann...

... ; Cartijo et al., 2010 ; Conway Morris et al., 1990 ; Grant, 1990 ; Hofmann and Mountjoy, 2001 ; Hua et al., 2005 ; Sour-Tovar et al., 2007 ; Warren et al., 2014 ). The stratigraphic range of Cloudina is constrained between the U–Pb zircon dates of 547.32 ± 0.31 Ma and 542.37 ± 0.28 Ma from volcanic...

... with the underlying sea-floor muds at the time of arrival of the volcanic ash that cast it ( Seilacher 1992 , 1999 ; Clapham and Narbonne 2002 ; Narbonne 2004 ; Gehling and Narbonne 2007 ). Pectinifrons is a multibranched rangeomorph that is constructed from a basal tubular pedicle rod from which stem two rows...

... east-southeast of an arc-like volcanic succession (as represented by the Byng and Fairbridge Volcanics north and west of the Cadia district near Wellington and Cargo; Fig. 1 ; Crawford et al., 2007 ; Percival and Glen, 2007 ). A thicker apron of deep marine turbidites and fine-grained volcaniclastic...

...Stephen R. Noble; Daniel J. Condon; John N. Carney; Philip R. Wilby; Timothy C. Pharaoh; Trevor D. Ford Abstract U-Pb (zircon) ages for key stratigraphic volcanic horizons within the ∼3200-m-thick Ediacaran-age Charnian Supergroup provide an improved age model for the included Avalonian assemblage...

... . Science 270 , 598 – 604 . Hofmann , H. J. & Mountjoy , E. W. 2001 . Namacalathus-Cloudina assemblage in Neoproterozoic Miette Group (Byng Formation), British Columbia: Canada's oldest shelly fossils . Geology 29 , 1091 –4. Horstwood , M. S. , Košler , J...

... a volcanic ash layer at the Doushantuo–Dengying boundary in the Yangtze Gorges area (Condon et al. 2005 ), and a new radiometric constraint of 538.8 Ma from Namibia (Linnemann et al. 2019 ) for the Ediacaran–Cambrian boundary, the Dengying Formation represents the last 12.3 million years of the Ediacaran...

.... 21 9 2004 26 5 2005 © 2005 NRC Canada 2005 Ouarzazate Group volcanics and associated high-level granites fill a narrow age range between 577 and 560 Ma ( Thomas et al. 2002 , Walsh et al. 2002 , Mifdal and Peucat 1985 , Aït Malek et al. 1998 ). Furthermore, felsic lavas and ash...

... carbonate, local diamictite and rare volcanic rocks ( Fig. 1 ). In the southern Cordillera, the age of the Windermere succession is bracketed by the 728+8-7 to 740 ± 36 Ma age of nonconformably underlying granitic rocks ( Evenchick et al., 1984 ; Parrish and Scammell, 1988 ) and the 569.6 ± 5.3 Ma age...

..., and the numerous ash beds of the Ara Group are likely airfall equivalents of contemporaneous arc magmatism. Thick sequences of felsic volcanic rocks, such as those represented by the Fara Formation (Oman Mountains) and in the subsurface (Ghaba salt basin), are all broadly consistent with subduction-related melting...

... by an erosional surface. It is composed of poorly sorted volcanic epiclastic conglomerates and pyroclastic components, overlain by medium-grained sandstones and tuffaceous siltstones interpreted as turbidity currents carrying reworked detritus from much shallower fluvial or nearshore...