caa a22 4500 469045442 CHVBK 20180323132823.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF02539794 doi (NATIONALLICENCE)springer-10.1007/BF02539794 Late Carboniferous intra-arc sediments in the north Chilean Andes: Stratigraphy, paleogeography and paleoclimate [Elektronische Daten] [Christoph Breitkreuz, Friedrich-Franz Helmdach, Rolf Kohring, Volker Mosbrugger] Summary: Thick terrestrial Late Carboniferous to Triassic volcanosedimentary successions, a prominent feature of the Chilean and Argentinian High Andes, were formed on the active continental margin of Gondwanaland. Their stratigraphic position and the paleogeographic and paleoclimatic relations to neighbouring successions are poorly defined. A more precise age has been obtained for alluviolimnic intra-arc sediments (Miembro Medio), which are intercalated in the Late Carboniferous-Triassic volcano-sedimentary successions in the Salar de Atacama area of northern Chile. The ostracodesCarbonita cf.pungens andParaparchites sp., which occur in the lower part of the Miembro Medio, are of Late Carboniferous, probably Westphalian age. The diverse taphoflora, which occurs in a higher stratigraphic level than the ostracodes, includes sphenophytes, ferns, gymnosperms and pteridophylls, for which we assume a late Westphalian-Early Permian age. Considering radiometric data of under-and overlying volcanic rocks, a Westphalian-Stephanian (to? Early Permian) age is inferred for the Miembro Medio. Fauna and flora indicate that warm-humid and seasonal climatic conditions existed during the deposition of the lower fossiliferous part of the Miembro Medio. This coincides with the sedimentary paleoclimatic indicators of the Miembro Medio and the climate which was assumed to have predominated in wide parts of the Central and Southern Andes during the Latest Carboniferous. Institut für Palaentologie, Universitat Erlangen, 1992 Alluvio. Limnic Sediments nationallicence Ostracode Fauna nationallicence Flora (Sphenophytes, Ferns, Gymnosperms, Pteridophylls) nationallicence Paleoclimate nationallicence Chilean Andes nationallicence Late Carboniferous (To? Early Permian) nationallicence Breitkreuz Christoph Institut für Geologie und Paläontologie, Technische Universität, Ernst-Reuter Platz 1, D-1000, Berlin 10 aut Helmdach Friedrich-Franz Geologisch-Paläontologisches Institut, Universität Heidelberg, Im Neuenheimer Feld 234, D-6900, Heidelberg aut Kohring Rolf Institut für Geologie, Freie Universität, Altensteinstr. 34a, D-1000, Berlin 33 aut Mosbrugger Volker Institut für Paläontologie, Universität Tübingen, Sigwartstr. 10, D-7400, Tübingen aut Facies Springer-Verlag 26/1(1992-12-01), 67-80 0172-9179 26:1<67 1992 26 10347 https://doi.org/10.1007/BF02539794 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02539794 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Breitkreuz Christoph Institut für Geologie und Paläontologie, Technische Universität, Ernst-Reuter Platz 1, D-1000, Berlin 10 aut NATIONALLICENCE 700 1- Helmdach Friedrich-Franz Geologisch-Paläontologisches Institut, Universität Heidelberg, Im Neuenheimer Feld 234, D-6900, Heidelberg aut NATIONALLICENCE 700 1- Kohring Rolf Institut für Geologie, Freie Universität, Altensteinstr. 34a, D-1000, Berlin 33 aut NATIONALLICENCE 700 1- Mosbrugger Volker Institut für Paläontologie, Universität Tübingen, Sigwartstr. 10, D-7400, Tübingen aut NATIONALLICENCE 773 0- Facies Springer-Verlag 26/1(1992-12-01), 67-80 0172-9179 26:1<67 1992 26 10347 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer