Mioc ene mammals from Li sbon and geo logic age

(

Ciencias da

Terra

(UNL)

Lisboa

N"14 pp.343-348 2000

3 Tab.

Mioc ene mammals from Lisbon and geologic age

A showcase for marine-continental correlations

Mjguel Telles Antu nes

Academiadu CiC:nciu deList-..

Cen trodeEsludosGeolOgiCO$,f aeuldad c:de Cifncias e TecnologiadaUNl.,Qu inlaetaTone 2825·114Caparica,Portugal. Td. (35 1) 2 1 294 115 73 . Fax;(3SI) 2 1 294 85 56 . mta@ma il.fc:t.unl.pl

The Lower Tagus basin in Lisbon and Senibal Peninsula offers excellent conditions for marine-continental

correla-tions, especially for Lower and Middle Miocene. A research Program was long (1960) conceivedbyus and is being

carried on since then. Among its main goals, it deals with Stratigraphy, Palaeontology (and Palaeoecology and Palaeoclimatology), accurate dating (planktic foraminifera, K-Ar,Sf isotopes), other isotope data (0,C)and related

tectonic events.

A huge volume of data has been obtained, much improving the already significant earlier status of knowledge. The time seems adequate for trying a global (and much more accurate) synthesis.

The following items will be presented;

- a corrected list of Lower and early Middle Miocene (mostly non marine) mammals, completed and thoroughly revised since earlier attempts (Antunes, 1984; AntunesinAntuneset ai., 1996).

- an updated model of the Lower Tagus Basin at its distal part (Lisbon& Setuba l Peninsula); the levels that yielded non marine mammals are shown in their accurate frame of marine units and age.

- an overview o f environmental evolut ion, especially on temperature and moisture shifts.

The list o f medium to large-sized mammals has been madc possible owing to contributions by (among others) Leonard Ginsburg (Paris), Maria Teresa Alberdi& Jorge Morales (Madrid) and the author; for small mammals, by Pierre Mein (Lyon).

Ie Cc ngresso sobre 0 Cenozoico de Portu gal

Table 1

Lo wer and ea r ly Middl e Miocene m ammals from Lisboa

The rum inants are referred accord ing to Antunesetat.( 1994). Large to med ium-sized mammals havebeenrevised by

L Ginsb urg (Pari s)andthe autho r. The small manunalswererevised by P. Mein (Lyon).

Main loca lities: H. Trip as '" Horta dIS Tripas; U.Cat. '" ljmversidade Cat6 lica; Av. Urug ... Aven idadoUrugu ai;Qt.Narig.

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Cienciasda Terra (UNLJ, 14

Table I

Lower and ea r ly Midd le Miocene mammals from Lisboa (coni.)

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Ie Congresso sobrc 0 Cenozoiccde Portugal

Table 2

Mo d el of Low er Tag us basin (d ista l p art), Lisbo a& Set uba l Peni nsula area (A ntunes et ai.,2000).

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Ciencias da Terra (UNLj, 14

Ta ble3

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I-tEFERENC ES

Antunes, M.T.(1984) - Essai de synthese sur les Mammiferes du Miocene du Portugal. Volume d 'hommage augeoiogue

G.Zhyszewski. Ed. Recherche sur les Civilisations, Paris. p.30 1-323.

Antunes, M.T.; Azanza ,8. ;Morales,J.& Soria, D.(1994)· Los Ruminantes [Artiod actyla, Mammalia) del Mioceno inferior del area de Lisboa (Cuenca del Taj o, Portugal).Rev. Espanola de Pateontotogia,9( 1):5 1-71.

Antunes. M. T. &Ginsburg.L. (2000) - Les Perissodactyles (Mamma lia) du Miocene de Lisbonne. 1· Congresso

sobre0 Cenozoico de Portugal.Monte de Caparica:281-286.

Antunes. M. T. &Ginsburg,L.(2000) -Presence du Creodont eHyainailouros sulzeri dans Ie Mioce ne du bassin du Bas Tage (Lisbonne, Portuga l).1· Congress» sabre0 Cenozotco de Portugal.Monte de Caparica:287-290.

Antunes, M.T.; Legoinha, P.; Nascimento.A. & Pais.J. ( 1996) - The Evolution of the Lower Tagus basin (Lisbon and Setubal Peninsula. Portugal) from Lower to earlier Middle Miocene .Geologie de la France. 4:1-16. Ed. BRGM. Orleans.

Antunes, M. T.; Legoinh a, P.; Cunha , P. & J . Pais (2000) - Estratigrafla de alta resolucao e correlecac de facies do Aquitaniano ao Tortoniano inferior de Lisboa edaPeninsula de Setubal (Bacia do Baixo Tejo, Portugal).P'Congresso

sobre0 Cenozotco de Portugal.Monte de Caparica :159 - 166.