 | | Journal (article/letter/editorial) |
| GENETIC IMPLICATIONS OF Sr ISOTOPIC DATA FROM THE ADEN VOLCANO, SOUTH ARABIA S.R. CARTER and M.J. NORRY Department...high-precision isotopic data from lavas of the Aden volcano, South Arabia, show a correlation between ~7Sr/...correlation are presented. 1. Introduction The Aden Volcanic Series consists o f a series o f six volcanoes...paper presents high-precision data from the Aden Volcano thus eliminating the element of geographic variation...slope on an isochron diagram. The rocks of the Aden Volcano have been divided into seven series by Cox et |
 | | Journal (article/letter/editorial) |
| western part of'.:he Shuqra volcanic field, South Yemen K. G. COX, I. G. GASS & D. I. $. MALLICK LITHOS...western part of the Shuqra volcanic field, South Yemen. Lithos 10, 185-191. Oslo. ISSN 0024-4937. The western...Jurassic limestones dipping towards the Gulf cf Aden and themselves overlying Precambrian basement. The...the series of central vent volcanoes forming the Aden line somewhat to the west along the coast, and the...and more silica-undersaturated than those of the Aden volcanoes. Preliminary chemical data reveal an unusual |
 | | Journal (article/letter/editorial) |
| The Peralkaline Volcanic Suite of Aden and Little Aden, South Arabia by K. G. cox,* i. G. GASS,-)-1 and...between the town of Aden and the southern entrance to the Red Sea (Fig. 1). Aden, Little Aden, and Ras Imran...volcanic rocks of Aden, Little Aden, and Ras Imran, here designated as belonging to the Aden Volcanic Series...about 5 m.y. ago. In its major element chemistry the Aden Volcanic Series is intermediate between the alkaline...eruption of the Yemen Trap Series, the upper part of which is petrologically similar to the Aden Volcanic Series |
 | | Report (issue) |
| PAPER 560-C Geology of the Arabian Peninsula Aden Protectorate By J. E. G. W. GREENWOOD and D. BLEACKLEY...PAPER 560-C A survey of the geology of the Western Aden Confederation as shown on USGS Miscellaneous Geologic...Geukens, who had worked in Yemen; and Z. R. Beydoun, who had studied the Eastern Aden Protectorate. With the..._____________ Older gneiss________________________________ Aden Metamorphic Group. __________________ Pelitic r...Regional correlation of basement rocks _ _______ Yemen._______________________________ Saudi Arabia.__ |
 | | Journal (article/letter/editorial) |
| Precambrian orogeny [ 1 4 - 1 6 ] ; ( 2 ) a thick volcano-sedimentary series of Mesozoic-to-Cenozoic age...1 (the case of fractional crystallization of plagioclase [28]). 389 described by equation (I 1), equation...is not figured in the inset. The presence of plagioclase phenocrysts shows that the Sr content of this..."~}0[02 1 I a 5.3. Alkali basalt series of the Aden volcano (South Arabia) _ =/ -- River Plain, studied...basalt series. Rb-Sr data on lavas from the Aden volcano show positive correlation between 87Sr/86Sr |
 | | Journal (article/letter/editorial) |
| subdued topography wherein the Red Sea, Gulf of re Aden, and East African Rift System converge at a triple...sub-lithospheric magma na reservoirs. Magmas in Afar and Yemen largely have geochemical characteristics consistent...relationship between rift evolution and magmatism. In Yemen, magmatic activity is limited to the regional Mid...small-volume alkaline volcanism along the evolving Gulf of Aden margin from 6 Ma to present. In contrast, a much...the Main Ethiopian Rift, Red Sea Rift, and Gulf of Aden. The evolution in Afar from initial large-scale |
 | | Journal (article/letter/editorial) |
| controls on the partitioning of Sr and Ba between plagioclase feldspar, silicate melts, and hydrothermal solutions...1987) reveal that the partitioning of Sr between plagioclase feldspar and hydrothermal solutions is a funtion...funtion of the anorthite (An) content of the plagioclase, indicating that crystal chemistry may exert a...those on trace element partitioning between plagioclase and silicate melts we have compiled from the...dominant control on partitioning of Sr and Ba into plagioclase and that the effects of temperature, pressure |
 | | Book (volume) |
| ............ A. The Sheba Ridge and the Gulf of Aden .......................... B. The Carlsberg Ridge...................... 247 Chapter 6. The Gulf of Aden and N.W. Arabian Sea Z. R. Beydoun I. Introduction................................... C. The Gulf of Aden and N. W. Arabian Sea ....................... IV...fractions from the western Indian Ocean and Gulf of Aden (Deep Sea Drilling Project, Leg 24), in: Initial...mid-ocean ridges which extends from the Gulf of Aden, with the Sheba Ridge, the Carlsberg Ridge, and |
 | Upton, B. G. J., Macdonald, R., Odling, N., Rämö, O. T., Bagiński, B. (2013) Kûngnât, revisited. A review of five decades of research into an alkaline complex in South Greenland, with new trace-element and Nd isotopic data. Mineralogical Magazine, 77 (4) 523-550 doi:10.1180/minmag.2013.077.4.11 | Journal (article/letter/editorial) |
| magma chamber (or chambers) beneath a central-type volcano, exhibits various features of petrological interest...saturated (or supersaturated) with respect to plagioclase. are younger than the Ring-Dyke. Lamination...broad microperthitic rims around more sodic plagioclase cores. Pinkish titaniferous augites are interstitial...such as the peralkaline trachytes of Menengai volcano, Kenya (Macdonald et al., 2011), and in experimental...is inferred to have resulted from extensive plagioclase fractionation in a mafic part of the magma chamber |
 | | Journal (article/letter/editorial) |
| differences in the mantle source rather than to plagioclase fractionation. Many instances of pseudoisochrons...Genetic implications of Sr isotopic data from the Aden volcano, South Arabia. Earth Planet. Sci. Lett. 31, |
 | | Report (volume) |
| {With two plates) . . . . . . 129 On the lavas of Aden, by Colonel C. A. McMahon, F.G.S. {With a plate)...remarkable for the absence of olivine. Augite, plagioclase, and magnetite ara present in each slice. All...type, but they are quite subordinate to the plagioclase. In one case water has clearly gained access...to the “ proper or genuine'i‘ols]>ai’ (i.e., plagioclase) basalts,” and which he classes as a sub-division...microclines contain the usual intergrowths of plagioclase and occasionally grains of quartz. Some of the |
 | | Journal (article/letter/editorial) |
| has been outlined by Cox et al. (1979) for the Aden volcano. 284 m 1500 D. STEPHENSON AND B. G. J. U...a maximum in Analytical techniques the sodic plagioclase of the ring-dyke while maxiAll analyses were...augite has a sub-ophitic relationship to the plagioclase and olivine. In the more differentiated (syeno-gabbroic)...more idiomorphic habit and joins olivine and plagioclase as a cumulus mineral. In the lowest exposed levels |
 | | Journal (article/letter/editorial) |
| 1983 1015 J. W. BRISTOWand E. P. SAGGEBSON Volcano-stratigraphic and geochemical mapping have been...formulate a plausible reconstruction of the Karoo volcano-tectonic and geochemical processes. 8. Previous...has led CLEVERLYand BRISTOW(1979) to formalise volcano-stratigraphic nomenclature for the Lebombo volcanic...played a major role in the development of the Karoo volcano-tectonic provinces, that the rhyolites were in...Pronksberg Basalt Fm. JAMESTOWN STORMBERG Table 1. Volcano-stratigraphy of Karoo volcanics in the central |
 | | Report (volume) |
| Nd«e* «fn Ytmmt Knspiian /mm cm# «/ ike Mad Volcano** i* C hod aba ... Sett on tk* rvul »f Murh (Marh)...may have been shot from some former sub-marine volcano now concealed beneath the alluvium of the delta...relating to a fiery eruption from one of ihemud volcano* fa Cheduha, 1 is published in continuation of...hate been about 80 miles from the scene of the volcano; hut even at this diatom a denes column of smoke...visible for hours after the eruption 6. I and that volcano was at an end. may mention that the high land |
 | | Journal (article/letter/editorial) |
| 175-187 0133 Baker, M. C. W.; and Vogt, P. R. Volcano spacing, fractures, and thickness of the lithosphere...relationships in sector-zoned submarine basalt plagioclase 24(2): 157-165 0391 Buat-Menard, P.; and Chesselet...Genetic implications of Sr isotopic data from the Aden Volcano, South Arabia 31(1): 161-166 0443 Carver,...A.; and Lanphere, M. A. Revised age for Midway Volcano, Hawaiian volcanic chain 37(1): 107-116 0632...K. Early lunar differentiation: 4.42-AE-old plagioclase clasts in Apollo 16 breccia 67435 38(2): 407-415 |
 | | Report (volume) |
| February, at 8 a.m., there was an eruption of a volcano in the Island of Cheduba. It was accompanied by...of the earth, lasting one and a half hours. The volcano is situated near the centre of the Island, and...(Signed) W. W. PEMBERTON, Deputy Commissioner. The volcano in question is evidently one of the two exceptionally...whether it was not a mere local tremor close to the volcano, caused by the explosive outbursts of gas. F. R...proving more than that the felspar is very often plagioclase. Whether the plagioclastic felspar is constantly |
 | | Book |
| depth) at which the peridotite equilibrated— plagioclase at low pressures, spinel at intermediate pressures...assemblage (with growth of garnet at the expense of plagioclase) around depths of 20-50 km (Wood, (~60% olivine)...minerals—olivine, pyroxene, garnet, spinel, and plagioclase. Adding or subtracting such elements can change...Exceptions are trace elements such as strontium in plagioclase, ytterbium, lutetium, and scandium in garnet...partition coefficient in plagioclase. Thus, when oceanic basalts crystallize plagioclase, the REEs tend to increase |
 | | Book |
| based on shock effects observed in olivine and plagioclase (Table 4). Since olivine is rare in enstatite...shocked S6 Very strongly shocked Shock melted Plagioclase Orthopyroxene Sharp optical extinction, irregular...are characterized by effects in olivine and plagioclase; shock levels in carbonaceous chondrites are...orthopyroxene (Fs25), and the presence of albitic plagioclase (An24 – 45), chromite, and merrilite; it may...AOAs; (v) large compositional variations in plagioclase (An45 – 78); (vi) bulk oxygen isotopic compositions |
