Extent of the Upper Norian – Rhaetian Slatnik Formation in the Tolmin Nappe, eastern Southern Alps

Abstract

In the Norian and Rhaetian the area of present-day Slovenia was divided into the Julian Carbonate Platform on in present north, the Dinaric Carbonate Platform in the present south and the intermediate Slovenian Basin. Main Dolomite or the Dachstein Limestone were deposited, on the platforms whereas the basin was characterized by the Ba~a Dolomite. The Upper Norian-Rhaetian succession was recently recognized in the northern part of the basin. It was studied in two sections and defined as the Slatnik Formation. Rich conodont and foraminiferal assemblages were additionally studied. Two new sections of the Slatnik Formation are presented in this paper, proving the existence of the formation across the entire northern segment of the basin. The Povdnar section is located in the continuous facies belt westward from the type-locality on Mt. Kobla. When compared to the type-locality and the other previously studied section at Mt. Slatnik, the Povdnar section exhibits more distal basinal development, where hemipelagic limestone prevails, whereas resedimented limestones occur only sporadically. For this reason, a coarsening and thickening upward trend that was recognized in previously investigated sections is poorly expressed in the Povdnar section. The second newly studied section is located on Mt. Javor where the most northwestern succession of the basin is found. In this section, the Slatnik Formation is composed solely of hemipelagic limestone.

Upper Triassic–to Lower Cretaceous Slovenian Basin successions in the northern margin of the Sava Folds

“…In some transitional sections (Mrzli Vrh, Ponikve Plateau, Trnje, sites 1, 3, 7 on Fig. 1c), the Ponikve Breccia is overlain by these siliceous pelagic sediments (Rožič et al, 2013(Rožič et al, , 2019(Rožič et al, , 2022. Our observations at the Čemšeniška Planina area could be similar to the Ponikve Plateau (Rožič et al, 2019), where the fully covered, several meters thick stripe occurs between the Ponikve Breccia and Biancone Limestone.…”

Upper Triassic Conodonts From the Csővár Area and the Buda Hills, Hungary and Their Geological Applications

“…One of the lithologically and biostratigraphically well-documented areas is the Tolmin Basin of the Southern Alps (Slovenia). Here the Bača Dolomite can be found in several successions, in some ranging up close to the Triassic/Jurassic boundary, in others only to the middle part of the Sevatian from where it develops into the cherty limestones of the Slatnik Formation (ROŽIČ et al 2009(ROŽIČ et al , 2013GALE et al 2012GALE et al , 2015GORIČAN et al 2012). Another area with…”