Temat: Afryka Północna - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Arab Spring Countries Two Years After the Revolution: Economic Aspects, Background, Consequences, Forecasts
Państwa Arabskiej Wiosny dwa lata po rewolucji. Kondycja ekonomiczna, szanse i zagrozenia
Autorzy:: Łukaszewicz, Adriana
Powiązania:: https://bibliotekanauki.pl/articles/506113.pdf
Data publikacji:: 2013
Wydawca:: Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:: Arabska Wiosna
przejście
Afryka Północna
rozwój gospodarczy
Opis:: Artykuł analizuje transformację ustrojową państw po Arabskiej Wiośnie: Egiptu, Tunezji, Libii i Syrii. Opisuje obecną sytuację gospodarczą i proces transformacji oraz perspektywy na najbliższą przyszłość. Kraje te są bowiem na etapie anarchii lub zmiany paradygmatu systemowego, stare zasady zostały obalone, pojawili się nowi gracze polityczni, ale ich pozycja nie jest jeszcze ustalona, społeczeństwa wciąż tkwią w fazie przejściowej.
Źródło:: Krakowskie Studia Międzynarodowe; 2013, 3; 53-72
1733-2680
2451-0610
Pojawia się w:: Krakowskie Studia Międzynarodowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Tidally dominated Miocene deltaic deposits and pipe rocks in the Tebessa Basin, eastern Algeria: sedimentological and ichnological characteristics
Autorzy:: Mazrou, Samia
Mahboubi, Mohamed
Powiązania:: https://bibliotekanauki.pl/articles/1841620.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: delta
palaeoenvironments
Skolithos
Langhian–Tortonian
North Africa
paleośrodowisko
Lang
Torton
Afryka Północna
Opis:: Analyses of sedimentology, ichnology and depositional environments of Langhian–Tortonian siliciclastic deposits in the southern Tebessa Basin (eastern Algeria) have revealed a tidally dominated deltaic setting with a high concentration of vertical burrows. From south to north, two depositional environments are here distinguished in the Tebessa Basin: a subaerial lower delta plain in the Oum Ali region with the trace fossils Ophiomorpha and Skolithos linearis, and a proximal delta front with numerous Skolithos, situated in the Hjer Essefra area. The occurrence of Skolithos pipe rock in this Miocene subtidal domain is unusual. Pipe rocks have been commonly reported from shallow and well-oxygenated environments, especially from Cambrian strata; their number decreased significantly during the Ordovician, coupled with an increase in biodiversity. Here different deltaic subenvironments and tidal signals that are exceptionally well preserved in outcrops are analysed and interpreted. Different ichnotaxa are briefly described, and the uncommon density and size of Skolithos pipe-rock in these Miocene strata are discussed.
Źródło:: Geologos; 2021, 27, 1; 15-34
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Roveacrinidae (Crinoidea, Articulata) from the Cenomanian and Turonian of North Africa (Agadir Basin and Anti-Atlas, Morocco, and central Tunisia): biostratigraphy and taxonomy
Autorzy:: Gale, Andrew Scott
Powiązania:: https://bibliotekanauki.pl/articles/139298.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Cretaceous
microcrinoids
correlation
North Africa
New taxa
kreda
korelacja
Afryka Północna
nowe taksony
Opis:: Successions exposed in the Agadir Basin (upper Albian to middle Turonian), in the Anti-Atlas (lower Turonian) in Morocco and in central Tunisia (Cenomanian–Turonian) yield abundant microcrinoids of the family Roveacrinidae, which are described and assigned to 32 species and formae, in ten genera. The following new taxa are described: Fenestracrinus gen. nov. with the type species F. oculifer sp. nov., Discocrinus africanus sp. nov., Styracocrinus rimafera sp. nov., Lebenharticrinus quinvigintensis sp. nov., L. zitti sp. nov., Euglyphocrinus cristagalli sp. nov., E. jacobsae sp. nov., E. truncatus sp. nov., E. worthensis sp. nov., Roveacrinus gladius sp. nov., R. solisoccasum sp. nov. and Drepanocrinus wardorum sp. nov. In addition, the new subfamily Plotocrininae is erected. The stratigraphical distribution of the taxa in two important localities, Taghazout in the Agadir Basin (Morocco) and Sif el Tella, Djebel Mhrila (central Tunisia), is provided. The faunas from the uppermost Albian and lowermost Cenomanian of the Agadir Basin are nearly identical to those recorded from central Texas, USA, some 5,300 km away, and permit a detailed correlation (microcrinoid biozones CeR1 and CeR2) to be established across the southern part of the Western Tethys, independently supported by new ammonite records. For the middle and upper Cenomanian, rather few detailed records of microcrinoids are available elsewhere, and the North African record forms the basis for a new zonation (CeR3–CeR6). The distribution of Turonian Roveacrinidae in North Africa is evidently very similar to that described in the Anglo-Paris Basin, and zones TuR1–3, TuR9, 10 and 14 are recognised for the first time in the Tethys.
Źródło:: Acta Geologica Polonica; 2020, 70, 3; 273-310
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ornamentation of dermal bones of Placodermi from the Lower Devonian of Morocco as a measure of biodiversity
Autorzy:: Antczak, M.
Berkowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/94702.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: Arthrodira
interspecific variation
ontogeny
fishes
North Africa
zróżnicowanie międzygatunkowe
ontogeneza
ryby
Afryka Północna
Opis:: Dermal bones are formed early during growth and thus constitute an important tool in studies of ontogenetic and evolutionary changes amongst early vertebrates. Ornamentation of dermal bones of terrestrial vertebrates is often used as a taxonomic tool, for instance in Aetosauria, extant lungfishes (Dipnoi) and ray-finned fishes (Actinopterygii), for which it have been proved to be of use in differentiating specimens to species level. However, it has not been utilised to the same extent in placoderms. Several features of the ornamentation of Early Devonian placoderms from Hamar Laghdad (Morocco) were examined using both optical and scanning electron microscopy to determine whether it is possible to distinguish armoured Palaeozoic fishes. Four distinct morphotypes, based on ornamentation of dermal bones, are dif-ferentiated. These distinct types of ornamentation may be the result of either different location of dermal plates on the body or of ontogenetic (intraspecific) and/or interspecific variation.
Źródło:: Geologos; 2017, 23, 2; 65-73
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Roveacrinidae (Crinoidea, Articulata) from the Cenomanian and Turonian of North Africa (Agadir Basin and Anti-Atlas, Morocco, and central Tunisia): biostratigraphy and taxonomy
Autorzy:: Gale, Andrew Scott
Powiązania:: https://bibliotekanauki.pl/articles/1835587.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Cretaceous
microcrinoids
correlation
North Africa
New taxa
kreda
korelacja
Afryka Północna
nowe taksony
Opis:: Successions exposed in the Agadir Basin (upper Albian to middle Turonian), in the Anti-Atlas (lower Turonian) in Morocco and in central Tunisia (Cenomanian–Turonian) yield abundant microcrinoids of the family Roveacrinidae, which are described and assigned to 32 species and formae, in ten genera. The following new taxa are described: Fenestracrinus gen. nov. with the type species F. oculifer sp. nov., Discocrinus africanus sp. nov., Styracocrinus rimafera sp. nov., Lebenharticrinus quinvigintensis sp. nov., L. zitti sp. nov., Euglyphocrinus cristagalli sp. nov., E. jacobsae sp. nov., E. truncatus sp. nov., E. worthensis sp. nov., Roveacrinus gladius sp. nov., R. solisoccasum sp. nov. and Drepanocrinus wardorum sp. nov. In addition, the new subfamily Plotocrininae is erected. The stratigraphical distribution of the taxa in two important localities, Taghazout in the Agadir Basin (Morocco) and Sif el Tella, Djebel Mhrila (central Tunisia), is provided. The faunas from the uppermost Albian and lowermost Cenomanian of the Agadir Basin are nearly identical to those recorded from central Texas, USA, some 5,300 km away, and permit a detailed correlation (microcrinoid biozones CeR1 and CeR2) to be established across the southern part of the Western Tethys, independently supported by new ammonite records. For the middle and upper Cenomanian, rather few detailed records of microcrinoids are available elsewhere, and the North African record forms the basis for a new zonation (CeR3–CeR6). The distribution of Turonian Roveacrinidae in North Africa is evidently very similar to that described in the Anglo-Paris Basin, and zones TuR1–3, TuR9, 10 and 14 are recognised for the first time in the Tethys.
Źródło:: Acta Geologica Polonica; 2020, 70, 3; 273-310
0001-5709
Pojawia się w:: Acta Geologica Polonica
Dostawca treści:: Biblioteka Nauki