...Laura Bracciali; Gianfranco Di Vincenzo; Sergio Rocchi; Claudio Ghezzo Abstract: The Tiger Gabbro layered intrusion is one of the few mafic intrusive bodies found along the ancient Antarctic Gondwana margin. Major and trace element data and Sr–Nd isotope compositions for gabbronorites indicate...

... the four deposits. These are (1) PGE-poor disseminated sulfides; (2) PGE-rich disseminated sulfides; and (3) semimassive to massive sulfides. The PGE-poor disseminated sulfides typically occur within the lower 250 m of the intrusion and are hosted mainly by heterogeneous norite and olivine gabbro, both...

... Lulung Formation), which is followed upward by fresh, sub-horizontal (~250m thick) volcanic unit (proposed Barehipani Formation) with local presence of peridotite-gabbro, and finally to quartz arenite unit (~150m thick) as the topmost layer (proposed Jurunda Formation). The heterolith unit (proposed...

...G . P. DURANT; M. R. DOBSON; B. P. KOKELAAR; R. M. MACINTYRE; W. J. REA Abstract Over 100 samples from the submarine Black–stones Bank Igneous Centre have been collected by scuba divers. The samples include gabbros, dolerites and metamorphosed sediments but ultramafic rocks, expected in view...

... is characterized by steeply plunging z-folds, and geometry at Conrad has been interpreted as a doubly plunging anticline ( Palmer and Kuiper, 2017 ; Pinet et al., 2022a ) or steepened soft-sediment folds ( Steiner and Hickey, 2022 ). With the exception of small outcrops of Paleozoic gabbros, magmatic rocks...

... in the eastern Himalayas have not been well studied. We provide geochemical and zircon U–Pb geochronological data on granitoids and migmatites from the Lohit Plutonic Complex (LPC) exposed in the easternmost Himalayas. This complex includes gabbro, diorite, granodiorite and migmatite, with evolved granites...

... data show that the S/Se ratios of the norites and the massive sulfides are higher (>5,000) than those of the gabbros (~3,000), confirming and extending the original observation of Thériault and Barnes (1998) from the Dunka Road deposit to the Serpentine and Babbit deposits (Table A3; Fig. 4B...

... further leads to the proposition that the Chifeng–Kaiyuan fault likely represents the Mesozoic lithospheric boundary between the North China craton and the Xing-Meng orogenic belt in northern Liaoning. The Xiaofangshen gabbros, together with the Triassic mafic–ultramafic cumulates and granulite xenoliths...

... and associated oceanic pelagic sediments. The present study focuses on the mafic cumulate rocks of the Andaman ophiolite preserved in the Kodiaghat and Munda Pahar area of South Andaman Island. The mafic cumulates are represented by olivine-bearing and olivine-free gabbros. The sequence of crystallization...

... of ~9000 km 2 and is thought to overlie the Archaean basement of the Singhbhum granite, the Iron Ore Group, and the Nilgiri granite ( Saha, 1994 ). The complex forms a part of the Simlipal reserve forest which was designated as a national park and tiger sanctuary in 1973. Being a protected tiger reserve...

... uplift and extension, has been interpreted to result from the foundering of a flat-slab subducted oceanic plateau ( Li and Li, 2007 ). This speculation is consistent with geophysical data in southern China, on the basis of which Zhang et al. (2008) interpreted that an ∼4 km layer of gabbro-like...

... and the continental facies of the Permian strata ( Xinjiang B.G.M.R., 1999 ; Zhou et al., 2009 ). Our study focuses on four types of Permian intrusive rocks in the region south of Altay, i.e., the Hongguleneng ultramafic complex, the Mayinebo gabbro, the Dasazi bimodal intrusive complex, and the Chaergan granites...