...George M. Gibson; Trevor R. Ireland Abstract The Black Giants Anorthosite, a mid-Paleozoic (349 ± 5 Ma U-Pb zircon age) layered anorthosite complex in Fiordland, New Zealand, bears striking compositional and lithologic similarities to Archean stratiform anorthosites and, like many of its Archean...

... eruptions begin. Black color indicates molten picrobasalt or basalt. Sill thickness is exaggerated. CFB—continental flood basalt. (B) Cross section of a sill, differentiated into an upper anorthositic mush (and ferrodioritic liquid, shaded gray), a middle gabbroic cumulate section, and a lower ultramafic...

... ) that are interpreted to have been filter pressed from late differentiates of the anorthositic suite ( McLelland et al., 1994 ). Figure 8. A giant (32 cm long) andesine xenocryst derived from a raft of extremely coarse grained anorthosite cumulate. The cumulate formed at lower crustal depths and was transported...

...: The Damiao anorthosite complex, North China Craton . Gondwana Research , 42 , 163 – 176 , https://doi.org/10.1016/j.gr.2016.10.015 . Wang , K. , Wang , C.Y. , and Ren , Z.Y. ( 2018 ) Apatite-hosted melt inclusions from the Panzhihua gabbroic-layered intrusion associated with a giant...

...—Rossie; RB—Roaring Brook on Giant Mountain; W—Wanakena. Locations for samples (sample numbers given for ages reported in this paper) discussed in text: a—Rooster Hill megacrystic charnockite; b—Piseco leucogranitic ribbon gneiss; c—Oregon Dome ferrodiorite and anorthosite, BMH-01-09; d—Gore Mountain...

... basalts (e.g., Walker 1983 ) and the abundance of ferroan anorthosite without cogenetic mafic rocks in the lunar crust (e.g., Longhi and Ashwal 1984). However, the development of the giant impact hypothesis alleviated many of the concerns about rapid heating. As discussed earlier, models of the dynamics...

... and less well-defined. It would probably be more correct, therefore, to call it a mottled leuconorite, rather than a mottled anorthosite. In the past, this lithology has been included with the underlying BH2 and BH3 lithologies as part of a composite, three-fold unit collectively termed the Giant Mottled...

... have replaced norites and anorthosites with intervening ultramafic layers remaining more-or-less unaltered (Fig. 3 ). The selective replacement of specific layers is a notable feature. These relationships break down in giant pipe-like bodies, such as Middellaagte, where the entire sequence may...

... reflectance spectra, comparison with lunar anorthosites, and mineralogical modelling . Icarus 168 : 257 – 276 Warren PH ( 1992 ) Inheritance of silicate differentiation during lunar origin by giant impact . Earth Planet Sci Lett 112 : 101 – 116 . Warren , PH ( 2001 ) Early...

...-gneisses, middle Nalim-Rassokha R.; U-2030a – Ga-2Px-gneiss, Udachnaya pipe, Daldynskoe kimberlite field [Neimark et al., 1992]. ANORTHOSITE COMPLEX. Samples were picked up on the middle Kotuikan R., Vostochnyi anorthosite massif. Pyroxene-bearing rocks of anorthosite complex: sample 884-1 – giant-grained...

... in association with anorthosite suite rocks ( Philpotts 1967 , 1981 ; Watson and Green 1981 ; Kolker 1982 ; Herz and Force, 1987 ; Force 1991 ; Ashwal 1993 ; Owens and Dymek 1992 ; Darling and Florence 1995 ; Duchesne 1999 ). Nelsonite is thought by some to originate as an immiscible liquid separated...

... crustal thickness values ( Cahill et al. 2009 ; Donaldson Hanna et al. 2014 ). Figure 2. a) Example global distribution of pure anorthosite areas (PAN, white dots ) and olivine-rich exposures ( red dots ) superimposed on a crustal thickness map ( Yamamoto et al. 2012b ). Black circles...

... of these rocks and soil samples, which represent the central and eastern nearside of the Moon, orbital XRF data obtained by Apollo 15 and 16, and interpretation of experimental data from the Apollo Lunar Surface Experiments Package (ALSEP) that was deployed on the lunar surface, identified anorthositic...

...–ultramafic massifs with a predominance of: 3 , ultrabasites; 4 , gabbroids; 5 , anorthosites; 6 , gradient zones of the gravity field of different scales, their numbers (in squares) and names are given in Fig. 1 . * Corresponding author. E-mail address : [email protected] (V.G. Khomich...

... anorthosite (LMA). These marker layers are terminated against the unconformity at the base of the Upper zone, and it is predicted that a more complete Main zone succession occurs with increased distance from the floor. Marker layers in the Upper Critical zone are the Giant Mottled anorthosite (GMA), Bastard...

.... ( 2016 ) Giant plagioclase basalts: Continental flood basalt–induced remobilization of anorthositic mushes in a deep crustal sill complex . GSA Bull. , v. 128 ( 5/6 ), pp. 916 – 925 , doi: 10.1130/B31404.1 . Stothers , R.B. ( 1993 ) Flood basalts and extinction events . Geophys. Res. Lett...

...Madeline Lee; Yuleika Madriz; Richard Gloaguen; Suzanne McEnroe Abstract The Bjerkreim-Sokndal layered intrusion in Rogaland Anorthosite Province in southwestern Norway has been the focus of decades of research due to its complex geology, the presence of prominent remanent magnetic anomalies...

... anorthositic crust. Mantle convection aided the rupture of the thin crust. Anatexis of the basic crust, and subcrustal granite produced light silicic magmas which underplated the upper crust. Local thickening developed continental crust nuclei and local thinning produced the ocean basin nuclei. B. M. JAHN...

... anorthositic crust ( Wood et al. 1970 ). During this process, the residual melt of the magma ocean became increasingly enriched in incompatible elements. The final few per cent of the magma ocean, sandwiched between the crust and mantle, is commonly referred to as urKREEP, named after the high concentrations...