...J. H. Smit; Edmund Stump Abstract The La Gorce Formation is a sequence of alternating metagraywacke, phyllite, and metapelite. Three bedding associations are recognized. The predominant type consists of massive or laminated graywacke beds in delayed graded contact with overlying thin mudstones...

... overlain by Cambrian limestones, and by silicic magmatism dated ∼650 Ma. Until this study, the relationship between the deformation and the magmatism had not been known. In the La Gorce Mountains, La Gorce Formation (Beardmore Group) was tightly folded during a regional metamorphic event producing biotite...

... bimodal magmas geochemistry Liv Group rifting Ross orogeny Transantarctic Mountains The La Gorce Formation of the Beardmore Group is the oldest unit of the Ross orogen in the Queen Maud Mountains. It crops out on the cratonic, inboard side of the Queen Maud−Wisconsin Range batholith (part...

... Beardmore orogeny, Antarctica: Geological evidence from the La Gorce Mountains Geological Society of American Bulletin 1986 97 953 965 Vaughan A.P.M. Millar I.L. Early Cretaceous magmatism during extensional deformation within the Antarctic Peninsula magmatic arc Journal of South...

... of the Late Proterozoic Beardmore orogeny, Antarctica: evidence from the La Gorce Mountains . Geol. Soc. Am. Bull. 97 : 953 – 965 . Tack , L. ; Liégeois , J. P. ; Deblond , A. ; and Duchesene , J. C. 1994 . Kibaran A-type granitoids and mafic rocks generated by two mantle sources...

... of the Byrd Group to be correlated with an event of similar age in the Queen Maud Mountains, which was responsible for deformation of the Liv Group ( Fig. 14 ). However, uncertainty remains regarding the age of deformation of upper Neoproterozoic siliciclastic successions in the Queen Maud (La Gorce Formation...

.... B. ; Ireland , T. R. ; and Weaver , S. D. 2002 . The multistage history of the Queen Maud batholith, La Gorce Mountains, central Transantarctic Mountains . In Antarctica at the close of a millennium. Proceedings of the 8th International Symposium on Antarctic Earth Sciences...

...) Ring and Layer (2003) ; (33) Soukis and Stockli (2013) ; (34) Dragovic et al. (2015) ; (35) Gorce et al. (2021) ; (36) Uunk et al. (2022) . Figure 3. Geological map of Naxos metamorphic core complex and cross sections after Lamont et al. (2019) shows sample locations and available...

... in the Pensacola Mountains, Antarctica: the significance of the Ross Orogen Geological Society of America Bulletin 1996 108 685 707 Stump E. Smith J.H. Self S. Timing of events during the Late Proterozoic Beardmore orogeny, Antarctica: geological evidence from La Gorce Mountains...

... San Andres in Cochran County, Shell’s No. 1-30-A (36) in the Southeast Dune field of Crane County, and La Gorce’s Johnson No. 1 (62) in the PHD field of Garza County. Sands in the Grayburg and San Andres also afforded new pays in the Pegasus and Germania fields of Midland County. In the former...

..., 2015 ; Thomson et al., 2016 ; Gorce et al., 2019 ; Zhang et al., 2022 ), our understanding of the carbon cycle in continental subduction zones, specifically regarding the carbon species, migration mechanisms, and final storage region associated with the recycling of continental crustal carbon...

...-ray data and thermodynamic peaks for the series of minerals. Daheim 50, a farm situated to the east of the Erongo mountains (Fig. 1 ) some 20 km northeast of Karibib, contains several smaller pegmatites with examples of petalite, tantalite and cassiterite. Of the three major pegmatites...

.... & Weaver , S.D. 2002 . The multistage history of the Queen Maud Batholith, La Gorce Mountains, central Transantarctic Mountains . Royal Society of New Zealand Bulletin , 35 , 153 – 159 . Wade , F.A. , 1974 . Geological surveys of Marie Byrd Land and the central Queen Maud Range...

... batholith (40 of 349), Granite Mountain batholith (5 of 38), the Mount Polley Intrusive Complex (2 of 81), the Takomkane batholith (8 of 69), the Nicola Group (17 of 92), and the Nicola batholith (1 of 17) present negative Eu anomalies (App. Table A2). These commonly have convex LREE (La N < Ce N...

... ; Skelton et al. 2019 ; Ring et al. 2020 ; Gorce et al. 2021 ; Kotowski et al. 2022 ; Glodny & Ring, 2022 ). Various geochronologic methods ( 40 Ar– 39 Ar, K–Ar, Rb–Sr, U–Pb, Sm–Nd, Lu–Hf) documented the importance of Eocene HP/LT metamorphism (55–40 Ma) for both the Kampos mélange...

... Press , 284 p. Stump , E. , Smit , J.H. , and Self , S. , 1986 , Timing of events of the Late Proterozoic Beardmore orogeny, Antarctica: Evidence from the La Gorce Mountains : Geological Society of America Bulletin , 97 . 953 – 965 . Stump , E. , Miller , J.M.G...

... by The Geological Society of London. All rights reserved 2019 © 2019 The Author(s) The term Pieniny Klippen Belt was first used by Neumayr (1871) . The geographical part of this name indicates the mountain range in Poland and Slovakia where numerous klippes (klippen) were recognized ( Golonka et al. 2015...

... in the adjacent Scott Glacier area, where deformation of the La Gorce Formation is demonstrably older than volcanism and intrusion associated with the Wyatt Formation ( Stump et al . 1986), now known to be of Early Cambrian age (526±2 Ma, Encarnación & Grunow 1996). Thus, in the Queen Maud Mountains...

... to 570 ppm La and 490 ppm Ce. The Heffley Creek pluton belongs to a suite of Late Triassic–Early Jurassic alkalic and Fe-rich intrusions that are widely developed throughout the Quesnel Terrane. Some host Cu-Au porphyry mineralization, but less commonly they are associated with magnetite-apatite veins...

... sheets that were stacked during the “Aegean orogeny” ( Jansen and Schuiling, 1976 ; Papanikolaou, 1984a , 1984b , 2013 ; Searle and Lamont, 2022 ). This mountain-building event resulted in NE-SW crustal shortening and closure of an ocean (Vardar Ocean) to the NE of Tinos and Andros in present-day...