 | | Book | | dykes 36 (vii) Dungunab sheet 361 37 (i) JEBEL UWEINAT, NORTHERN PROVINCE 37 (j) RUBATAB AREA, NORTHERN...Unfoliated intrusions 19 19 outcrops 47 (b) JEBEL UWEINAT AREA 48 (c) NAWA FORMATION 51 3. MESOZOIC...SHEET 55 (1952 EDN), SABALOKA AND JEBEL QEILI (g) 43 44 (n) JEBEL MARRA REGION (i) Basal schists ...BAHR EL AHMER, DERUDEB SHEET 461, AND KASSALA DISTRICT 31 (iii) Origin of the Nubian Sandstone Formation... Dongola area 64 (vii) Regional description: Jebel Nakharu (viii) Regional description: Kassala Province |  | | Journal (issue) | | been made, and 19 are listed; the Nd data from Jebel Marra are, however, indicative of only the most...Sudan. For example, Jebel Uweinat area of Libya, Egypt and the north-west Sudan; Jebel Marra in north and...No. 66 1990 20"E 300 40"E EGYPT ·,.'· 20°N LIBYA '-.. ASafsaf G. Kamil � --, I NORTH DARFUR... An Archaean basement inlier occurs in the Jebel Uweinat region of the extreme north-western Sudan and...that at least part of the gneisses between the Uweinat Archaean basement of the Nile Craton and the ocean | | | Book | | LATITUDE 6°N (c) (vii) Dungunab sheet 361 (i) JEBEL UWEINAT, NORTHERN PROVINCE GEOLOGICAL GEDAREF-SENNAR...series IL SUDAN COMPANY QUARRY (1) 15 (n) JEBEL MARRA REGION 15 16 17 7 17 17 17 19 19 19 19...SABALOKA AND JEBEL QEILI (g) SOUTHERN JUBAL EL BAHR EL AHMER, DERUDEB SHEET 461, AND KASSALA DISTRICT AREA...CONTINUATION OUTCROPS OF THE ERDI-ENNEDI (b) JEBEL UWEINAT AREA (c) NAWA FORMATION 3. MESOZOIC FORMATIONS...Thickness variations (v) Regional description: Jebel Uweinat— 64 (vi) Regional description: Wadi Halfa |  | CIGOLINI, Corrado, DI MARTINO, Mario, LAIOLO, Marco, COPPOLA, Diego, ROSSETTI, Piergiorgio, MORELLI, Marco (2012) Endogenous and nonimpact origin of the Arkenu circular structures (al‐Kufrah basin—SE Libya) Meteoritics & Planetary Science, 47 (11) 1772-1788 doi:10.1111/maps.12012 | Journal (article/letter/editorial) | | Arkenu circular structures (al-Kufrah basin—SE Libya) Corrado CIGOLINI1,4*, Mario DI MARTINO2, Marco...located in the al-Kufrah basin in southeastern Libya, were previously considered as double impact craters...circular structures (ACS) are located in southeastern Libya, on the eastern margin of the al-Kufrah Basin (Bellini...(Bellini et al. 1991) about 90 km southwest of Jebel al-Arkenu (Fig. 1). The NE (Arkenu 1) and the SW...setting of subvolcanic complexes of Jebel al-Arkenu and Jebel al-Uweinat strengthened this hypothesis. The |  | | Journal (issue) | | Kordofan, Darfur, and Northern Provin<:(� 11 Jebel Uweinat inlier 11 Bayuda and Nubian deserts and Red...sequence of events in the Basement Cc)mplex of Jcbcl Uweinat area 12 Sequence of events in the Basement Compl... 1963) , Chad ( 1 : 1 .5 million, 1 964) , and Libya ( 1 : 2 million, 1970) . It was timely, therefore...Portsmouth Polytechnic. Plate 2 The sun1mit of Jebel Marra volcano, Darfur Oanuary, 1 969) with the two...Wadi Magrur flowed north eastwards around the Jebel Abyad plateau to join the Nile, possibly by way |  | Franz, Gerhard, Steiner, Gesine, Volker, Frank, Pudlo, Dieter, Hammerschmidt, Konrad (1999) Plume related alkaline magmatism in central Africa—the Meidob Hills (W Sudan) Chemical Geology, 157 (1) 27-47 doi:10.1016/s0009-2541(98)00195-8 | Journal (article/letter/editorial) | | Hills. The oldest volcanic rocks Ž36 Ma. come from Jebel Kussa, a small occurrence near the centre of the...ŽAn 2 – 7 Ab51 – 66 Or26 – 47 ., 10 to 30 vol.% aegirine-augite and some nepheline. Phenocrysts are ulvospinel-magnetite...ulvospinel-magnetite, sanidine, anortho¨ clase, nepheline, aegirine-augite and rare biotite and amphibole. Rounded...rocks from the Darfur Dome, from its main volcano Jebel Marra, have significantly higher 87 Srr86 Sr ratios...Darfur Dome towards the north to Tibesti or Jebel Uweinat, the nearest Cenozoic magmatic centers ŽGuiraud |  | | Journal (article/letter/editorial) | | in the Nubian Province of Sudan, the Uweinat Province of Libya and the Cameroon Province of West Africa...activity, another exception being the Jebel Uweinat Massif (Libya). T h e other cratons are devoid of Cainozoic...predominantly in Sudan but which extend into Egypt and Libya in the north and into Ethiopia and Uganda in the...amphibole granites, albite rich- and ablite-poor aegirine arfvedsonite granites, and biotite AFRICAN ANOROGENIC...ferro-augite hedenbergite ferrohedenbergite aegirine-hedenbergite aegirine edenite ferro-actinolite ferrowinchite |  | | Journal (article/letter/editorial) | | A-type granites are exemplified by hypersolvus aegirine quartz–syenites and arfvedsonite Žriebeckite....Gondwana. from the Archaean nucleus of Jebel Uweinat ŽSE Libya. to the Dharwar Craton of India ŽFig. 1...Madagascar Occurrence Description Age ŽMa. 87 1. Jebel Kamil ŽSW EgyptrNW Sudan. 3 plutons and concentric... partly hypersolvus textures; mineralogy as at Jebel Rahib, but wiborgitic rapakivi textures more widespread...grained, sub- – – 1 2. Wadi Halfa ŽN Sudan. 3. Jebel Rahib ŽNW Sudan. 4. Wadi Howar ŽNW Sudan. 5. Shallal |  | | Book | | Democratic Republic of the Congo Ethiopia Guinea Libya Malagasy Republic Mali Republic Morocco iti Contents...feldspathoidal rocks by pyroxenes rich in the aegirine (or acmite) molecule, NaFeSi,Og, and the various...composition from diopside, CaMgSi,Og, through aegirine-augite to aegirine. Small needles of sodic pyroxene are...melts incongruently such as the mafic mineral aegirine, while the precipitation from oversaturated melts...as quartz is replaced by alkali feldspars and aegirine or blue amphibole, while potash feldspars become |  | | Journal (article/letter/editorial) | | best outcrops of these rocks in Egypt are found at Jebel Meatiq (26°07'N, 33°43'E) in the Eastern Desert...toward the Precambrian outcrops at Jebel Uweinat at the Egypt--Sudan--Libya junction. Here ages up to 2670...Granites" alkaline and peralkaline riebeckite-aegirine-granite, ex: Kadabora Granite granites; alkali-monzonite...al., 1980), which reach at their type locality, Jebel Dokhan, a thickness of 1200 m. Stern (1979a) obtained... , ) Fig. 5. The Hamad Abadu unconformity at Jebel Katharina (southern Sinai). 40 (Fig. 5) in Sinai |  | | Book | | Ivory Coast / Cote dʼIvoire Kenya Lesotho Liberia Libya 32 38 42 46 50 52 56 60 64 66 68 72 74 80 84 88...World Realm faunas being present from Morocco to Libya and Arabia. Early Devonian brachiopods are known...35°N 35°N E W TUNISIA S MOROCCO 30°N 30°N LIBYA 25°N MALI 100 0 100 300 km NIGER 20°N 20°N...strata. The Ghadames Basin occupies northwestern Libya and extends into eastern Algeria, where Cambrian...east of Parakou. Limestone is found in the Oueme District in the south, with reserves estimated at 123 million |  | | Book | | chronology: Nubia (650 Ma), Iforas (560- 540 Ma), Uweinat (490), AIr (490-400 Ma), BaIche-Mangbai (425-384...(Cret.-Mioc.), Los (96 Ma), Red Sea Hills (90 Ma), Uweinat (60 Ma), Cameroon Line (60- 30 Ma and 30 Ma-Present)...million tectonic map, p 292) Prior GT (1900) On aegirine and riebeckite anorthoclase rocks related to the...dolerites show a late alkaline paragenesis with aegirine, arfvedsonite and aenigmatite. The observed textural...if' Cope Verde Ahaggar ()-o ~ Tibesti cY Jebel Mora Tristan do Cunha Fig. 4. Africa-hot spot |  | | Book | | Archean–Mesoproterozoic “Metacratonic Gneisses of Uweinat-Kamil inlier”. With the exception of the Neoproterozoic... . . . . . . . 2.4.1 Metacratonic Gniesses of Uweinat-Kamil Inlier . . 2.4.2 Infrastructural Gneissic...upper Egypt to reach the border of the present day Libya to see the imaginary Zarzora Oasis. The northern...geology of the Sinai Peninsula and Cairo-Suez district (Barron 1907) and together with W. Hume compiled...of some ore deposits like chromite in Barramiya district, Tin in Um Bissila and cassiterite in Igla (all |  | | Journal (volume) | | Korpershc;ek (unpublished) The geology or Cassinga district, Angola, and its potential compared to that of...province covering Burundi, Rwanda, the west lake district of Tanzania, and southwest Uganda. The latter...sandstone) to 111etapelites, but in the largest tin district of the area, Rutongo/ Rwanda. quartzites are preferentially...features of both will be summarized below. The tin-district of Rutongo (Pohl 1978) occupies the eastern limb...probable gramte quartr,te Figure 5. Rutongo tin district: itlca!izcd geological section and ~tereographic |
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