Stratigraphic, paleoenvironmental and biochronological analysis of La Deheza Formation (Upper Carboniferous-lower Permian), San Juan, Argentina

被引:0
作者
Alejandro Correa, Gustavo [1 ]
Raul Gutierrez, Pedro [2 ]
机构
[1] Inst & Museo Ciencias Nat, Area Paleontol, San Juan, PR, Argentina
[2] Museo Argentino Ciencias Nat Bernardino Rivadavia, Buenos Aires, DF, Argentina
来源
REVISTA MEXICANA DE CIENCIAS GEOLOGICAS | 2014年 / 31卷 / 03期
关键词
Paleoflora; La Deheza Formation; upper Paleozoic; San Juan; Argentina; PAGANZO BASIN; PALYNOLOGY; PROVINCE; PRECORDILLERA; EVOLUTION; NARVAEZ; FACIES; SPORES; SIERRA; AGE;
D O I
暂无
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Stratigraphic, paleoenvironmental and biochronological analysis were performed in the La Deheza Formation (Upper Carboniferous-Lower Permian), San Juan, Argentina. These new upper Paleozoic outcrops in the Paganzo basin are 690 m thick and consist of ten facies associations. In this formation are represented postglacial Upper Carboniferous (Serpukhovian-early Bashkirian) (facies I, II and III), Stephanian transgression (facies IV), continental sediment with coal deposits (facies V), the trangressive event Asselian-Sakmarian (early Cisuralian?) (facies VI), and the last continental deposits (facies VII), followed by the most modern trangressive event in Paganzo basin (latest Cisuralian-early Guadalupian?) (facies VIII, IX and X). It also discussed its validity as a stratigraphic unit, neostratotype and is defined in a time frame in an environment of nearby depocenters to the Paganzo basin. The last meters of the facies VI show abundant remains of Ferugliocladus patagonicus Archangelsky y Ctineo, Eucerospermum nitens Feruglio emend. A. Archangelsky, Paracalamites sp. and Cordaites sp., which together make up a significant megafloristic association assigned to the "Ferugliocladus Superzone". In addition, pollen records found throughout the entire unit allows to constrain it between the Serpukhovian to latest Cisuralian-e-arly Guadalupian?.
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页码:340 / 353
页数:14
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共 101 条
  • [1] [Anonymous], [No title captured]
  • [2] [Anonymous], 2006, The geology of fluvial deposits: sedimentary facies
  • [3] Archangelsky A, 1999, AMEGHINIANA, V36, P465
  • [4] Archangelsky A., 2000, B ACAD NACL CIENCIAS, V64, P79
  • [5] FERUGLIOCLADACEAE, A NEW CONIFER FAMILY FROM THE PERMIAN OF GONDWANA
    ARCHANGELSKY, S
    CUNEO, R
    [J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 1987, 51 (1-3) : 3 - 30
  • [6] ARCHANGELSKY S, 1979, Revista Espanola de Micropaleontologia, V11, P417
  • [7] Archangelsky S, 1996, SISTEMA PERMICO REPU, P203
  • [8] Azcuy CL., 2000, PALAE NTOGRAPHICA, V253, P103
  • [9] PERMIAN PALYNOSTRATIGRAPHY OF THE COLLIE BASIN, WESTERN-AUSTRALIA
    BACKHOUSE, J
    [J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 1991, 67 (3-4) : 237 - 314
  • [10] Balarino L., 2009, AMEGHINIANA, V46, p61R