Correlation of the Middle and Upper Permian marine and terrestrial sedimentary sequences in Polish, German, and USA Western Interior Basins with reference to global time markers

Paleoecological and paleoenvironmental changes during the continental Middle–Late Permian transition at the SE Iberian Ranges, Spain

“…At this respect, the regional shift to a wetter climate recorded in the MS is coinddent with the relatively fast climatic change from arid and semiarid climate conditions to a humid paleoclimate recorded in Central and Western Europe ( Fig. 9; Schneider et al, 2006;Slowakiewicz et al, 2009), and could be related to the global climatic changes recorded in other parts of Pangea (Racki and Wignall, 2005;Retallack et al, 2006;Isozaki et al, 2007;Lai et al, 2008). Based on the multidisdplinary data used in this paper, the interpreted paleoclimatic curve for the Alcotas Formation (Fig.…”

“…In detail, Nuskoisporites dulhuntyi, which occurs up to the Middle Subunit of the Alcotas For mation, is restricted to the Middle-Late Permian of western, central and southern Europe, with first-occurrences not earlier than Wordian times (Poort et al, 1997), and Potonieisporites, which is present in the Boniches Formations and absent in the palinological data of the Alcotas Formation and lateral equivalents, does not occur in the Zechstein (Doubinger et al, 1990). Best estimations (Slowakiewicz et al, 2009) locate the base of the Zechstein at the Guadalupian Lopingian Boundary, and thus, based on microflora, the Boniches For mation is interpreted to be older than 260.4 Ma. On the other hand, a preliminary pal eo magnetic study of the Alcotas Formation (De la Horra, 2008) confirmed that the deposition of this unit was character ized by normal and reverse intervals of polarity.…”

“…In addition, the use of sedimentary indicators of palaeoclimatic conditions can provide powerful tools for correlations . Recently, Slowakiewicz et al (2009) published a recompilation of broad paleoclimatic trends during the Middle-late Permian in a wide area that spanned Polish, German, and USA Western continental basins. These authors differen tiated two wet phases at the base of the Capitanian Stage, and at the GlB.…”

Integrated multi-stratigraphic study of the Coll de Terrers late Permian–Early Triassic continental succession from the Catalan Pyrenees (NE Iberian Peninsula): A geologic reference record for equatorial Pangaea

“…8). This climatic shift is possibly related to that of the upper portion of the Alcotas formation in the Iberian Basin (De la Horra et al, 2012) and also to the climatic shift documented in the early late Permian of northern Pangaea (Retallack et al, 2006;Roscher and Schneider, 2006;Słowakiewicz et al, 2009). This may imply that the lower/upper URU boundary could be correlated with the middle-late Capitanian (around the middle Permian extinction event) (Retallack et al, 2006;Sheldon et al, 2014;Day et al, 2015).…”

Carbon isotope stratigraphy of the basal Zechstein (Lopingian) strata in Northern Poland and its global correlation

“…Re cently it was sug gested that the in ter val of Zechstein depo si tion is lon ger, and the Zechstein base was shifted down to 260.4 Ma (Wag ner, 2009;S³owakiewicz et al, 2009), be ing equiv a lent to the Guadalupian/Lopingian bound ary, but such a spec u la tive con cept has no sup port in the data and it ig nores the fact that rapid changes in d 13 C val ues in the basal Zechstein are not com pat i ble with the grad ual changes of d 13 C val ues recorded at the Guadalupian/Lopingian bound ary (Isozaki et al, 2007;Bond et al, 2010).…”