https://vital.seals.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Volcanic rocks of the Witwatersrand Triad, South Africa. II: petrogenesis of mafic and felsic rocks of the Dominion Group https://vital.seals.ac.za/vital/access/manager/Repository/vital:37889 Mon 13 May 2024 13:07:51 SAST ]]> Asthenospheric and lithospheric sources for Mesozoic dolerites from Liberia (Africa): trace element and isotopic evidence https://vital.seals.ac.za/vital/access/manager/Repository/vital:37887 Mon 13 May 2024 13:07:27 SAST ]]> The Klinghardt phonolites, South West Africa: Tertiary volcanism in western southern Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:29627 Mon 13 May 2024 12:53:26 SAST ]]> Aenigmatite stability in silica-undersaturated rocks https://vital.seals.ac.za/vital/access/manager/Repository/vital:36911 Mon 13 May 2024 12:53:25 SAST ]]> The timing and duration of the Karoo igneous event, southern Gondwana https://vital.seals.ac.za/vital/access/manager/Repository/vital:38857 Mon 13 May 2024 12:53:23 SAST ]]> The Luderitz Alkaline Province, South West Africa II: metasomatism and assimilation in the contact aureole of the Granitberg Foyaite Complex https://vital.seals.ac.za/vital/access/manager/Repository/vital:36913 Mon 13 May 2024 12:50:33 SAST ]]> The Luderitz Alkaline Province, South West Africa I: descriptive petrology of the Granitberg Foyaite Complex https://vital.seals.ac.za/vital/access/manager/Repository/vital:36912 Mon 13 May 2024 12:50:14 SAST ]]> The Lüderitz alkaline province, South West Africa, III: the Pomona and Drachenberg Syenite Complexes https://vital.seals.ac.za/vital/access/manager/Repository/vital:36915 Mon 13 May 2024 12:48:03 SAST ]]> Distribution of Ca in highly fractionated peralkaline magmas https://vital.seals.ac.za/vital/access/manager/Repository/vital:36914 Mon 13 May 2024 12:47:44 SAST ]]> New chemical analyses of the Suurberg volcanic rocks and their significance in relation to Mesozoic volcanism in Southern Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:36951 Mon 13 May 2024 12:47:23 SAST ]]> Tertiary phonolite volcanism in the Klinghardt Mountains of South West Africa/Namibia https://vital.seals.ac.za/vital/access/manager/Repository/vital:36953 Mon 13 May 2024 12:46:55 SAST ]]> Significance of 87Sr/86Sr ratios in the Merensky cyclic unit of the Bushveld Complex https://vital.seals.ac.za/vital/access/manager/Repository/vital:36986 Mon 13 May 2024 12:46:28 SAST ]]> Petrogenesis of Karoo magmas from Namibia and the nature of their source areas https://vital.seals.ac.za/vital/access/manager/Repository/vital:29831 Mon 13 May 2024 12:46:10 SAST ]]> The geochemistry of basic volcanics of the Dordabis Formation northeast of Dordabis and their significance for correlations within, and evolution of, the Rehoboth Magmatic Arc https://vital.seals.ac.za/vital/access/manager/Repository/vital:29577 Mon 13 May 2024 12:46:09 SAST ]]> The role of continental lithosphere in the generation of the Karoo volcanic rocks: evidence from combined Nd-and Sr-isotope studies https://vital.seals.ac.za/vital/access/manager/Repository/vital:37080 Mon 13 May 2024 12:44:13 SAST ]]> Strontium isotope characterization of Karoo volcanic rocks https://vital.seals.ac.za/vital/access/manager/Repository/vital:37081 Mon 13 May 2024 12:43:32 SAST ]]> Regional geochemistry of the Karoo igneous province https://vital.seals.ac.za/vital/access/manager/Repository/vital:37079 Mon 13 May 2024 12:43:09 SAST ]]> Geochemistry of Karoo basalts and dolerites in the northeastern Orange Free State: Recognition and origin of the new Karoo basalt magma types. https://vital.seals.ac.za/vital/access/manager/Repository/vital:29830 Mon 13 May 2024 12:42:20 SAST ]]> Geochemistry and petrogenesis of the Etendeka volcanic rocks from SWA Namibia https://vital.seals.ac.za/vital/access/manager/Repository/vital:37041 Mon 13 May 2024 12:41:13 SAST ]]> The mineralogy, petrology, and origin of the Merensky cyclic unit in the western Bushveld Complex https://vital.seals.ac.za/vital/access/manager/Repository/vital:37329 Mon 13 May 2024 12:40:37 SAST ]]> The geochemistry of potassic lavas from Vulsini, central Italy and implications for mantle enrichment processes beneath the Roman region https://vital.seals.ac.za/vital/access/manager/Repository/vital:37330 Mon 13 May 2024 12:40:10 SAST ]]> Tying up the continents https://vital.seals.ac.za/vital/access/manager/Repository/vital:38220 Mon 13 May 2024 12:36:57 SAST ]]> Oxygen isotope geochemistry of the Mesozoic volcanics of the Etendeka Formation, Namibia https://vital.seals.ac.za/vital/access/manager/Repository/vital:38219 Mon 13 May 2024 12:36:34 SAST ]]> The petrogenesis of the Kirwan Basalts of Dronning Maud Land, Antarctica https://vital.seals.ac.za/vital/access/manager/Repository/vital:38443 Mon 13 May 2024 12:36:07 SAST ]]> The petrogenesis of the Kirwan Basalts of Dronning Maud Land, Antarctica https://vital.seals.ac.za/vital/access/manager/Repository/vital:38441 Mon 13 May 2024 12:35:36 SAST ]]> REE fractionation and Ce anomalies in weathered Karoo dolerite https://vital.seals.ac.za/vital/access/manager/Repository/vital:38469 Mon 13 May 2024 12:34:41 SAST ]]> Petrogenesis of late Archaean flood-type basic lavas from the Klipriviersberg Group, Ventersdorp Supergroup, South Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:38470 Mon 13 May 2024 12:34:00 SAST ]]> Promotion of the Etendeka Formation to Group status: a new integrated stratigraphy https://vital.seals.ac.za/vital/access/manager/Repository/vital:38442 Mon 13 May 2024 12:33:38 SAST ]]> Karoo and Etendeks flood basalt provinces, southern Africa and the tectonic development of their adjacent margins: https://vital.seals.ac.za/vital/access/manager/Repository/vital:38386 Mon 13 May 2024 12:33:13 SAST ]]> Geology Field Trip Guide: Natural Sciences and Geography Educators visit https://vital.seals.ac.za/vital/access/manager/Repository/vital:38387 Mon 13 May 2024 12:32:49 SAST ]]> Geochemical stratigraphy of the Mohale Dame-Katse Dam areas, Lesotho. Report on contract LHDA, Mohale Tunnel: Sampling and Testing of Cores. Lesotho Highlands Tunnel Partnership (Mohale) https://vital.seals.ac.za/vital/access/manager/Repository/vital:38385 Mon 13 May 2024 12:32:30 SAST ]]> Alkaline rocks in the Kuboos-Bremen Igneous Province, southern Namibia: the Grootpenseiland and Marinkas Kwela Complexes https://vital.seals.ac.za/vital/access/manager/Repository/vital:38471 Mon 13 May 2024 12:32:01 SAST ]]> The petrology and significance of a stratiform mafic segregation pegmatite in a Karoo-aged dolerite sheet https://vital.seals.ac.za/vital/access/manager/Repository/vital:38858 Mon 13 May 2024 12:31:15 SAST ]]> Petrology and geochemistry of peridotite xenoliths from the Letlhakane kimberlites, Botswana https://vital.seals.ac.za/vital/access/manager/Repository/vital:38876 Mon 13 May 2024 12:30:50 SAST ]]> The Marinkas Quellen Carbonatite Complex, southern Namibia: carbonatite magmatism with an uncontaminated depleted mantle signature in a continental setting https://vital.seals.ac.za/vital/access/manager/Repository/vital:38879 Mon 13 May 2024 12:30:27 SAST ]]> Geochemical variations in a long Karoo dyke, Eastern Cape https://vital.seals.ac.za/vital/access/manager/Repository/vital:38877 Mon 13 May 2024 12:30:04 SAST ]]> Petrology of the alkaline core of the Messum igneous complex, Namibia: evidence for the progressively decreasing effect of crustal contamination https://vital.seals.ac.za/vital/access/manager/Repository/vital:38880 Mon 13 May 2024 12:29:12 SAST ]]> Field Trip A1: Karoo dykes, sills and volcanics in the Eastern Cape https://vital.seals.ac.za/vital/access/manager/Repository/vital:38383 Mon 13 May 2024 12:28:46 SAST ]]> The distribution of platinum group elements in the Insizwa lobe, Mount Ayliff Complex, South Africa: implications for Ni-Cu-PGE sulfide exploration in the Karoo igneous province https://vital.seals.ac.za/vital/access/manager/Repository/vital:38969 Mon 13 May 2024 12:28:27 SAST ]]> Geochemical constraints on coupled assimilation and fractional crystallization involving upper crustal compositions and continental tholeiitic magma https://vital.seals.ac.za/vital/access/manager/Repository/vital:37888 Mon 13 May 2024 12:15:42 SAST ]]> The geochemical structure of the Insizwa lobe of the Mount Ayliff complex with implications for the emplacement and evolution of the complex and its Ni-sulphide potential https://vital.seals.ac.za/vital/access/manager/Repository/vital:38984 Mon 13 May 2024 12:14:05 SAST ]]> The concentrations of the noble metals in Southern African flood-type basalts and MORB: implications for petrogenesis and magmatic sulphide exploration https://vital.seals.ac.za/vital/access/manager/Repository/vital:38985 Mon 13 May 2024 12:13:42 SAST ]]> Implications of a new 40Ar/ 39Ar age for a basalt flow interbedded with the Etjo Formation, Northeast Namibia https://vital.seals.ac.za/vital/access/manager/Repository/vital:38970 Mon 13 May 2024 12:12:51 SAST ]]> Evolution of a strongly differentiated suite of phonolites from the Klinghardt Mountains, Namibia https://vital.seals.ac.za/vital/access/manager/Repository/vital:37885 Mon 13 May 2024 12:12:28 SAST ]]> Basalt geochemistry and tectonic discrimination within continental flood basalt provinces https://vital.seals.ac.za/vital/access/manager/Repository/vital:37886 Mon 13 May 2024 12:12:05 SAST ]]> Petrology and geochemistry of early cretaceous bimodal continental flood volcanism of the NW Etendeka, Namibia Part 2: characteristics and petrogenesis of the high-Ti latite and high-Ti and low-Ti voluminous quartz latite eruptives https://vital.seals.ac.za/vital/access/manager/Repository/vital:38987 Mon 13 May 2024 12:10:59 SAST ]]> Petrology and geochemistry of Early Cretaceous bimodal continental flood volcanism of the NW Etendeka, Namibia Part 1: introduction, mafic lavas and re-evaluation of mantle source components https://vital.seals.ac.za/vital/access/manager/Repository/vital:38986 Mon 13 May 2024 12:10:32 SAST ]]> Distinct kimberlite pipe classes with contrasting eruption processes https://vital.seals.ac.za/vital/access/manager/Repository/vital:38988 Mon 13 May 2024 12:10:05 SAST ]]> Rock magnetic stratigraphy of a mafic layered sill: a key to the Karoo volcanics plumbing system https://vital.seals.ac.za/vital/access/manager/Repository/vital:38389 Mon 13 May 2024 12:06:59 SAST ]]> Compositionally diverse magmas erupted close together in space and time within a Karoo flood basalt crater complex: https://vital.seals.ac.za/vital/access/manager/Repository/vital:38396 40 km2 filled by 9–18 km3 of volcaniclastic debris.]]> Mon 13 May 2024 12:06:37 SAST ]]> The largest volcanic eruptions on Earth https://vital.seals.ac.za/vital/access/manager/Repository/vital:36902 1000 km3 dense rock equivalent) and large-magnitude (> M8) eruptions produce really extensive (104–105 km2) basaltic lava flow fields and silicic ignimbrites that are the main building blocks of LIPs.]]> Mon 13 May 2024 12:06:03 SAST ]]> The geochemistry and evolution of Palaeogene phonolites, central Namibia: https://vital.seals.ac.za/vital/access/manager/Repository/vital:38399 Mon 13 May 2024 12:05:37 SAST ]]> Cretaceous volcanic rocks of the Namibe Basin, southern Angola: report on a reconnaissance field and geochemical investigation https://vital.seals.ac.za/vital/access/manager/Repository/vital:29070 Mon 13 May 2024 12:05:14 SAST ]]> Report on the Mesozoic volcanic and intrusive rocks on the Namibe Basin, Southwest Angola: https://vital.seals.ac.za/vital/access/manager/Repository/vital:38384 Mon 13 May 2024 12:04:49 SAST ]]> An attempt to constrain the age, duration, and eruptive history of the Karoo flood basalt: Naude's Nek section (South Africa) https://vital.seals.ac.za/vital/access/manager/Repository/vital:38401 Mon 13 May 2024 12:04:31 SAST ]]> Karoo volcanic and intrusive rocks: Lesotho and Eastern Cape https://vital.seals.ac.za/vital/access/manager/Repository/vital:38388 Mon 13 May 2024 12:03:37 SAST ]]> The oxygen isotope composition of Karoo and Etendeka picrites: High δ18O mantle or crustal contamination? https://vital.seals.ac.za/vital/access/manager/Repository/vital:27829 Mon 13 May 2024 12:03:12 SAST ]]> The Bero Volcanic Complex: extension of the Paraná-Etendeka Igneous Province into SW Angola https://vital.seals.ac.za/vital/access/manager/Repository/vital:27827 Mon 13 May 2024 12:02:51 SAST ]]> The Etendeka Igneous Province: magma types and their stratigraphic distribution with implications for the evolution of the Paraná-Etendeka flood basalt province https://vital.seals.ac.za/vital/access/manager/Repository/vital:38882 Mon 13 May 2024 12:01:44 SAST ]]> Eruptive history of the Karoo lava flows and their impact on early Jurassic environmental change: https://vital.seals.ac.za/vital/access/manager/Repository/vital:38408 Mon 13 May 2024 12:01:18 SAST ]]> Emplacement of inflated Pāhoehoe flows in the Naude’s Nek Pass, Lesotho remnant, Karoo continental flood basalt province: use of flow-lobe tumuli in understanding flood basalt emplacement https://vital.seals.ac.za/vital/access/manager/Repository/vital:27826 Mon 13 May 2024 12:00:27 SAST ]]> Base-metal mineralization in alkaline pyroclastics: the Regenstein Vent, South West Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:36950 Mon 13 May 2024 11:49:02 SAST ]]> High-Mg tholeiitic rocks and their significance in the Karroo Central Province https://vital.seals.ac.za/vital/access/manager/Repository/vital:36916 Mon 13 May 2024 11:45:59 SAST ]]> Karoo basalts, South Africa: Petrogenesis and the nature of their mantle rocks https://vital.seals.ac.za/vital/access/manager/Repository/vital:29625 Mon 13 May 2024 11:45:40 SAST ]]> Al/Cr ratios of coexisting pyroxenes and spinellids in some ultramafic rocks https://vital.seals.ac.za/vital/access/manager/Repository/vital:36987 Mon 13 May 2024 11:45:17 SAST ]]> The Karoo igneous province: an introduction https://vital.seals.ac.za/vital/access/manager/Repository/vital:37043 Mon 13 May 2024 11:44:47 SAST ]]> The chemistry and petrogenesis of igneous rocks of the Karoo central area, southern Africa https://vital.seals.ac.za/vital/access/manager/Repository/vital:37042 Mon 13 May 2024 11:44:21 SAST ]]> Some geochemical constraints upon models for the crystallization of the upper critical zone-main zone interval, northwestern Bushveld complex https://vital.seals.ac.za/vital/access/manager/Repository/vital:37331 Mon 13 May 2024 11:43:53 SAST ]]> Volcanic rocks of the Witwatersrand triad, South Africa I: description, classification and geochemical stratigraphy https://vital.seals.ac.za/vital/access/manager/Repository/vital:37663 Mon 13 May 2024 11:43:29 SAST ]]> Cretaceous erosion in central South Africa: evidence from upper-crustal xenoliths in kimberlite diatremes https://vital.seals.ac.za/vital/access/manager/Repository/vital:38397 Mon 13 May 2024 11:39:08 SAST ]]>