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| | Book | | Adjacent Areas A Reference Case for Mapping and Modeling in Geosciences Regional Geology Reviews Series Editors...geology of each country, region and continent on Earth in a systematical way. Each book provides the reader...geologists require when beginning investigations in a particular area and include as much information...Adjacent Areas A Reference Case for Mapping and Modeling in Geosciences 123 Editors Mohamed Hamoudi Laboratory...Sciences and Technology Houari Boumediene Algiers, Algeria Jean-Louis Bodinier Mohammed VI Polytechnic University | 👁 Image
| | Book | | at researchers, students, and everyone interested in geology. The series
includes peer-reviewed monographs...Science and Technology
Houari Boumediene
Algiers, Algeria
Zakaria Hamimi
Department of Geology
Benha University...Science and Technology
Houari Boumediene
Algiers, Algeria
Basem Zoheir
Department of Geology
Benha University...Science and Technology
Houari Boumediene
Algiers, Algeria
ISSN 2197-9545
ISSN 2197-9553 (electronic)
Springer...recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission
or information | 👁 Image
| | Journal (article/letter/editorial) | | panafrikanische Orogen-Gfirtel des Hoggar-Gebirges in Siidalgerien erstreckt
sich fiber eine Breite yon...geologischen Einheiten aufgebauten mobilen Zone. In seinem westlichen
Tell zeugen bereits die untersten...Orogen vom andinen Typus auf granulitischem
Untergrund in Betracht gezogen. Dieses der Kruste vor ca. 650~800...J. neu zugeffihrte Material steht m6glicherweise in Zusammenhang mit nach Osten einfallenden
Subduktionszonen...Grabenzonen.
Diese verschiedenen Elemente werden in unterschiedlichem MaBe von der panafrikanischen Tektogenese | 👁 Image
| | Report (article/chapter) | | granulite-facies metapelites of
Tidjenouine (Central Hoggar, Algeria): witness of the
LATEA metacratonic evolution
ABDERRAHMANE...Eburnean and Pan-African orogenies.
The Tidjenouine area in the Laouni terrane belongs to the LATEA metacraton...detailed petrological study coupled with in situ U –Pb zircon dating by laser-ablation inductively coupled...on the basis of textural relationships, modelling in KFMASH and FMASH systems and
thermobarometry. The...at c. 650 8C and 3– 4 kbar (M3) occurred. U– Pb zircon laser ablation ICP-MS analysis
allows us to date | 👁 Image
| | Journal (article/letter/editorial) | | 1016/j.oregeorev.2019.103260
OREGEO 103260
To appear in:
Ore Geology Reviews
Received Date:
Revised Date:...copyediting, typesetting and review before it is published in its final form, but we are providing
this version...continental blocks. The belt, with major exposure in
the Tuareg and Dahomeyan, consists of pre-Neoproterozoic...greenstone belts in terms of gold mineralization, displays reasonable gold
mineralization in both the Tuareg...controlled by N-S
trending Pan African shear zones. In the Tuareg shield, mineralized quartz veins are
associated | 👁 Image
| | Journal (article/letter/editorial) | | Printed in The Netherlands
PAN-AFRICAN AND PRE-PAN-AFRICAN HISTORY OF THE HOGGAR
(ALGERIAN SAHARA) IN THE...pre-Pan-African history of the
Hoggar (Algerian Sahara) in the light of new geochronological data from the Aleksod...structural and geochronological investigations carried out in the
Central part of the Hoggar:
-- confirm the existence...still to be defined.
These results are discussed in the setting of available geochronological data concerning...and on the occurrence of
unconformities, emphasized in some places by metamorphic conglomerates
(Kilian | 👁 Image
| Fezaa, Nassima, Liégeois, Jean-Paul, Abdallah, Nachida, Cherfouh, El Hadi, De Waele, Bert, Bruguier, Olivier, Ouabadi, Aziouz (2010) Late Ediacaran geological evolution (575–555Ma) of the Djanet Terrane, Eastern Hoggar, Algeria, evidence for a Murzukian intracontinental episode. Precambrian Research, 180 (3) 299-327 doi:10.1016/j.precamres.2010.05.011 | Journal (article/letter/editorial) | | (575–555 Ma) of the Djanet Terrane, Eastern
Hoggar, Algeria, evidence for a Murzukian intracontinental episode...Géologie de l’ingénieur et Planétologie, USTHB, Algeria
Isotope Geology, Royal Museum for Central Africa...Géographie,
BP 32, El Alia, Bab Ezzouar, 16111 Alger, Algeria
d
Faculté des Sciences Biologiques et des Sciences...Géologie de l’ingénieur et Planétologie, USTHB, Algeria
e
SRK Consulting, 10 Richardson Street, West Perth...Article history:
Received 18 September 2009
Received in revised form 25 February 2010
Accepted 5 May 2010 | 👁 Image
| | Journal (article/letter/editorial) | | Springer-Verlag 1995
Gold mineralization in the West Hoggar shear zone, Algeria
K. Ferkous 1, M. Leblanc 2
10...M., 8 rue des Aur6s, E1 Harrach, 16000 Alger, Algeria
2 C.N.R.S., Centre G6ologiqueet G6ophysique,Un...fault of the
Pharusian Belt of the Tuareg Shield (Algeria). The Amesmessa shear zone is asymmetric: strong...biotitic ultramylonites are in contact with a rigid
Archean complex (In Ouzzal block), whereas there is...(pyrite, galena, native gold, sphalerite) crystallized in the deformed quartz matrix along late shear
planes | 👁 Image
| | Journal (article/letter/editorial) | | Zebane
dyke swarm žPan-African Tuareg shield, Algeria /: prevalent
mantle signature and late agpaitic...located along the western boundary of the Archaean In Ouzzal rigid
terrane, but inside the adjacent Tassendjanet...at that period. No crustal contamination occurred in the genesis of the Tin
Zebane swarm. Even the samples...granites: this
geochemical signature is interpreted in terms of extensive differentiation effects due to...aegirine,
zircon, titanite, allanite and possibly fergusonite, separated from the liquid in the swarm | 👁 Image
| | Journal (article/letter/editorial) | | V., Amsterdam - Printed in The Netherlands
Location of extraneous argon in granulitic-facies minerals:...and Rahmani, A., 1990. Location of extraneous argon in granulitic-facies
A paired microprobe-laser
probe...investigated minerals from the In Ouzzal granulitic unit (Sahara, Algeria). As excess 40Ar frequently occurs...laser probe technique in an attempt to determine the location of the excess
component in the minerals. Combining...found to be located on the rim of the biotite and in the microcracks of the pyroxene and garnet which | 👁 Image
| | Journal (article/letter/editorial) | | 5005, Australia
Received 20 February 2007; received in revised form 30 May 2007; accepted 4 June 2007
Available...commonly occur in Mg–Al-rich rock compositions
that are unfortunately relatively rare in nature. These...for extracting information from mineral assemblages in conjunction with mineral chemistry, e.g. the aluminium...been proposed for the generation of UHT conditions in the deep crust. The two
fundamental types of orogenic...proposed to be potential sites for UHT metamorphism. In
contrast to current geodynamic models that are typically | 👁 Image
| Doukkari, Sid Ali, Diener, Johann F.A., Ouzegane, Khadidja, Kienast, Jean-Robert (2018) Mineral equilibrium modelling and calculated chemical potential relations of reaction textures in the ultrahigh-temperature In Ouzzal terrane (In Hihaou area, Western Hoggar, Algeria) Journal of Metamorphic Geology, 36 (9) 1175-1198 doi:10.1111/jmg.12441 | Journal (article/letter/editorial) | | textures in the ultrahigh-temperature In Ouzzal terrane (In
Hihaou area, Western Hoggar, Algeria)
Sid Ali...
B.P. 32 El Alia, Dar el Beida, 16111-Alger, Algeria.
b
Département des Sciences de la Nature et de...orthopyroxene–sillimanite-bearing granulites from In Hihaou, In Ouzzal terrane, NW
Hoggar were previously determined...to be reliable, as
textures do not typically form in this way or routinely record this information.
Keywords:...that can be attained in the
crust, there has been a proliferation of interest in identifying rocks and | 👁 Image
| | Journal (article/letter/editorial) | |
Evolution of the Precambrian In-Ouzzal block (Central Sahara,
Algeria)
H. Haddoum”, P. Choukroune**b...to constrain the evolution of the Precambrian In-Ouzzal block situated on the eastern side of the West...rocks which can be compared with those described
in Archaean supracrustal terrains.
(ii) The entire block...second phase.
(iv) The major tectono-metamorphic
event in the area is related to a 2.0 Ga-old (Ebumian) orogeny...erased by the Eburnian event.
1. Introduction
The In-Ouzzal granulitic block is isolated
between two branches | 👁 Image
| | Journal (article/letter/editorial) | | and spinel–quartz parageneses
in Al–Mg granulites from In Hihaou, In Ouzzal, Hoggar
K . OU Z EG A NE AN... Algiers, Algeria
A B S TR A CT
Quartz Al–Mg granulites exposed at In Hihaou, In Ouzzal (NW Hoggar)...Grt+Crd+SilSpl+Qtz and (8)
Grt+SilSpl+Qtz. Minerals in quartz Al–Mg granulites display compositional variations...textures and the evolution of the mineral assemblages in the quartz Al–Mg granulites
indicate a clockwise...temperature of at least 900 °C.
Key words: granulite; In Ouzzal, Hoggar; P–T path; ultrahigh-temperature metamorphism | 👁 Image
| | Report (article/chapter) | | Comparisons between the northwestern Borborema
Province, NE Brazil, and the southwestern Pharusian
Dahomey...Comparisons between the northwestern Borborema
Province, NE Brazil, and the southwestern Pharusian
Dahomey...Brasiliano
Borborema Province are described and compared with their counterparts in the Pan-African
Dahomey...West Gondwana assembly. In the Médio Coreaú domain, NW Borborema Province, U –Pb and Sm– Nd data
have...with large
tracts of 2.15– 2.10 Ga juvenile gneisses in the Ceará Central domain. These basement blocks | 👁 Image
| PEUCAT, J.-J., CAPDEVILA, R., DRARENI, A., CHOUKROUNE, P., FANNING, C. M., BERNARD-GRIFFITHS, J., FOURCADE, S. (1996) Major and trace element geochemistry and isotope (Sr, Nd, Pb, O) systematics of an Archaean basement involved in a 2.0 Ga very high-temperature (1000oC) metamorphic event: In Ouzzal Massif, Hoggar, Algeria. Journal of Metamorphic Geology, 14 (6) 667-692 doi:10.1111/j.1525-1314.1996.00054.x | Journal (article/letter/editorial) | | basement involved in a 2.0 Ga very
high-temperature (1000 °C) metamorphic event: In Ouzzal Massif,
Hoggar...Hoggar, Algeria
J . - J . P E U CAT, 1 R . CA P DE V I LA , 1 A . D R AR E NI , 2 P . CH O UK R OU NE , 1*...USTHB, Institut des Sciences de la Terre, Algiers, Algeria
3 Research School of Earth Sciences, ANU, Canberra...CT
The In Ouzzal granulitic massif is composed mainly of various meta-igneous rocks which, in spite of...high-Mg tholeiitic basalts similar to the
suites found in Archaean greenstone belts and (3) calcalkaline protoliths | 👁 Image
| | Journal (article/letter/editorial) | | relationships in the Precambrian AI-Mg-rich
granulites from In Ouzzal, Hoggar, Algeria
P. BERTRAND,'...21nstitut des Sciences de la Terre, U.S.T.H.B., Alger, Algeria
Laboratoire de Petrologie Mdtamorphique, Universite...ABSTRACT The Al-Mg-rich granulites from the In Ouzzal craton, Algeria, show a great diversity of mineral reactions...continuous equilibria as predicted by phase relationships in the Fe0-Mg0-A1,03SiO, system. The sequence of mineral...Sa-Qz-bearing assemblages; and (3) a later stage, in which garnet-bearing assemblages
are replaced by | 👁 Image
| | Book | | recitation, broadcasting, reproduction on microfilms or in any other physical way,
and transmission or information...trademarks, service marks, etc. in this
publication does not imply, even in the absence of a specific statement...are safe to assume that the advice and information in
this book are believed to be true and accurate at...scientific papers on mineral
deposits of North Africa. In total, 22 papers report new field and laboratory
data...data on diverse types of metallic deposits in Morocco, Algeria, Tunisia, Mali,
Mauritania, Egypt, Sudan | 👁 Image
| | Journal (article/letter/editorial) | | Special Issue
Palaeoproterozoic UHT metamorphism in the Lewisian
complex and North Atlantic region
Sotaro...temperature (UHT) metamorphism of the Lewisian complex in South Harris and
the North Atlantic regions were...The characteristic features of the UHT metamorphism in the South
Harris can be summarized as a) mineral...established UHT metamorpism in South
Harris is the emplacement of igneous suite in the magmatic arc at c.... 2.18 − 1.87 Ga. In the North Atlantic region,
possible UHT metamorphism were reported from the Boothia | 👁 Image
| | Journal (article/letter/editorial) | | assemblages preserved in ultrahigh-temperature granulites from
In Ouzzal (Hoggar, Algeria)
Z. ADJERID,1,3 G...Naturelles, B.P. 92, Vieux Kouba, Alger, 16050, Algeria
2
Institut de Physique du Globe, Sorbonne Paris...Alger, 16111, Algeria
4
Univ. Paris-Diderot, Paris 7, France
ABSTRACT
Osumilite is reported in Palaeoproterozoic...granulites from the Khanfous area (Tekhamalt, In Ouzzal, Hoggar, Algeria). The main peak assemblages are osumilite...orthopyroxene + sillimanite + quartz biotite
(K-feldspar) in silica-deficient and silica-saturated granulites | 👁 Image
| | Journal (article/letter/editorial) | | e and sapphirine parageneses
in Archaean rocks from the Hoggar, Algeria
J. R. Kienast
Laboratoire de...Dar el Beida, Alger, Algeria
An orthopyroxene-sillimanite association occurs in AI-Mg rich granulites...aluminous
metapelites at In Hibaou (NW Hoggar). Sapphirine is characteristically present in those rocks as a...geothermometers and geobarometers to the observed
parageneses in the two metamorphic events gives the following P-T...are in general agreement with those deduced
from associated pyrigarnites.
K E Y WORDS
Algeria
Hoggar | 👁 Image
| | Journal (article/letter/editorial) | | discovered in Al –Mg granulites from the Khanfous area
(In Ouzzal metacraton, Hoggar, Algeria)
Z. ADJERID1...Khanfous area from the Archaean In Ouzzal
granulite terrane (Western Hoggar, Algeria) preserves exceptional thermal-peak...þ quartz and sapphirine þ orthopyroxene þ quartz, in quartz-rich Al–Mg granulites.
Reaction textures coupled...Khanfous area, as well as the entire
northern In Ouzzal metacraton, experienced ultrahigh-temperature...feldspar preserved as mesoperthite
or antiperthite in metapelites (e.g. Harley 1985;
Sandiford 1985; Sheraton | 👁 Image
| | Journal (article/letter/editorial) | | Springer-Verlag 1983
Deformation and Related Radiochronology in a Late Pan-African
Mylonitic Shear Zone, Adrar des...Abstract. The influence of a deformation on the zircon U/
Pb system was studied using the example of the...fracturation of the crystals
and dispersion of the fragments in the ductile matrix. An
equilibrium grain size was...the initial
size of the zircons and of the strain.
In order to establish an accurate radiochronology of...zircons. In agreement to previous
U - Pb, Rb - Sr and S m - Nd data, the present results show
that in the | 👁 Image
| | Journal (article/letter/editorial) | | associated carbonatites (In Ouzzal
Proterozoic granulites, Hoggar, Algeria)
S . F OU RC A DE , 1 J ....B.P. 9, Dar el Beida, Algiers, Algeria
A B S TR A CT
The In Ouzzal granulitic unit (IOGU ) consists...metamorphism. Most of
the isotopic variation in the marbles is explained in terms of pregranulitic features. Metasomatic...with respect to these elements, a relative depletion in Nb, Ta, Hf, Zr and Ti. The isotopic compositions...signatures. The zones of metasomatic alteration in the
In Ouzzal granulites may be the deep-seated equivalents | 👁 Image
| | Journal (article/letter/editorial) | | compositions
in rhyo-ignimbrites in the In Hihaou (In Zize)
Magmatic Center, central Ahaggar, Algeria
Serge...Cedex 05, France
Abstract. The 620 M.y.-old in Hihaou (In Zize) magmatic
complex located at the north-western...north-western boundary of the Archaean In Ouzzal block (western Ahaggar), is composed
of massive alkaline...granophyric and granitic body.
The whole is preserved in a cauldron structure. Extrusive
rocks are strongly...within the upper parts of plutonic complexes
and in the surrounding rocks, by means of large-scale hydrothermal |
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