Stratigraphy And Tectonics Of The Uppermost Bucegi Conglomerate Formation (Albian, Eastern Carpathians, Romania)

• Main Authors: JIPA, Dan Constatin, UNGUREANU, Constantin, ION, Gabriel
• Format: Text
• Language: unknown
• Published: Zenodo 2013
• Subjects: Bucegi Massif, Albian, lithostratigraphy, conglomerate unit, olistoliths, fining upward trend.; Dwyer; Leckie; North Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.56849; https://zenodo.org/record/56849

Abstract. This paper presents a detailed lithostratigraphic investigation carried out in the Bucegi Massif, a mountainous zone from the southern part of the Eastern Carpathians. The study focused on the 50 - 70 m thick succession of four conglomerate units associated with olistoliths, intercalated in the upper part of the Babele Sandstone Member (the uppermost lithostratigraphic unit of the Albian Bucegi Conglomerate Formation). The conglomerate beds succession stands for the uppermost strata of the thick Bucegi conglomeratic accumulation. All the four conglomerate bodies are stratiform and continuous for almost two kilometers, and show mainly constant lithofacies features on wide areas. The study emphasizes two large-scale trends of high implication on depositional interpretation. The reduced areal extension of the basal conglomerate unit, compared with the larger extension area of the overlying units 2, 3 and 4, is one of the features with genetic significance. Another remarkable characteristic is the lateral passage from the single thick conglomerate units 2, 3 and 4, to conglomerate units alternating with sandstones beds. Another remarkable characteristic is the northwards amalgamation of the conglomerate units 1, 2, 3 and 4 into a single body, named in this paper the Conglomerates with Olistoliths. : {"references": ["Bralower, T. J., Fullagar, P. D., Paull, C. K., Dwyer, G. S., Leckie, R. M., 1997.", "Mid-Cretaceous strontium-isotope stratigraphy of deep-sea sections.", "Geol. Soc. Am. Bull. 109, 1421-1442.", "Briceag, A., Jipa, D., Melinte, M. 2009. Early Cretaceous deposits of the", "Ceahl\u0103u Nappe (Romanian Carpathian Bend area). Geo-Eco-Marina", "15, 177-185.", "Dumitrescu, I., S\u0103ndulescu, M., 1968. Probl\u00e8mes structuraux fondamentaux", "des Carpates roumaines et de leur avant-pays. Annuaire du", "Comit\u00e9 G\u00e9ologique 36, 195-218.", "Melinte, M.C., Jipa , D., 2007. Stratigraphy of the Lower Cretaceous sediments", "from the Romanian Carpathian Bend area. Acta Geologica", "Sinica, English Edition, 81, 6, 949-956.", "Murgeanu, G., Patrulius, D., 1957. Le Cr\u00e9tac\u00e9 sup\u00e9rieur de la Leaota et", "l\u2019\u00e2ge des Conglomerats de Bucegi. Rev. G\u00e9ol. G\u00e9ogr. I, 109-124.", "Murgeanu, G., Patrulius, D., 1963. Les conglom\u00e9rates de Bucegi, formation", "de molasse m\u00e9socr\u00e9tac\u00e9e des Carpates Orientales. Association", "Association G\u00e9ologique Carpato-Balkanique. VI-\u00e8me Congr\u00e8s.", "R\u00e9sum\u00e9s des communications, 113-115.", "Murgeanu, G., Patrulius, D., Contescu, L., Jipa, D., Mih\u0103ilescu, N., Panin,", "N., 1963. Stratigrafia si sedimentogeneza terenurilor cretacice", "din partea intern\u0103 a Curburii Carpa\u0163ilor. Asociatia Geologic\u0103", "Carpato-Balcanic\u0103. Congresul V. Comunic\u0103ri \u015ftiin\u0163ifice. Sec\u0163ia II", "stratigrafie III/2, 31-58.", "Murphy M. A., Salvador, A. (Eds.), 1999. International Stratigraphic", "Guide - An abridged edition. International Subcommission on", "Stratigraphic Classification (ISSC). Episodes, 22/ 4, 255-271.", "Mutt erlose, J., 1992. Lower Cretaceous nannofossil biostratigraphy of", "Northwestern Australia (Leg 123). In: Gradstein, F. M., Ludden,", "J. N., et al. (Eds.), Proceedings of the Ocean Drilling Program, Scientific", "Results 123, 343-368.", "Oncescu, N., 1943. R\u00e9gion de Piatra Craiului-Bucegi. \u00c9tude g\u00e9ologique.", "Anuarul Institutului Geologic al Rom\u00e2niei 22, 1-124.", "Patrulius, D., 1969. Geologia Masivului Bucegi \u015fi a Culoarului D\u00e2mbovicioara.", "Editura Academiei Rom\u00e2ne, 321 pp.", "Patrulius, D., Dimitrescu, R., Popescu, I., 1971. Geological map of Romania,", "scale 1:50,000, sheet 110d Moeciu. Edited by the Geological", "Institute of Romania.", "Roth, P.H., 1983. Jurassic and Lower Cretaceous calcareous nannoplankton", "in the western North Atlantic (Site 534): biostratigraphy,", "preservation and some observations on biogeography and", "palaeoceanography. Initial Reports of Deep Sea Drilling Projects", "76, 587-621.", "S\u0103ndulescu, M., 1984. Geotectonica Rom\u00e2niei. Editura Tehnic\u0103", "Bucure\u0219ti, 336 pp."]}