On the species of the genus Selliporella SARTONI &amp; CRESCENTI, 1962 from the Middle Jurassic of the coastal Dinarides of Croatia

Sokač, Branko; Grgasović, Tonči

doi:10.4154/gc.2017.15

Cited by 4 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Bajocian‐Bathonian succession of the Adriatic Platform contains a highly diversified benthic foraminifera association with several index species that form seven biozones (Velić, 2007): Timidonella sarda Taxon‐Range Zone (Late Aalenian‐Early Bajocian), Timidonella sarda‐Pseudodictyopsella jurassica Interval Zone (late Early Bajocian), Pseudodictyopsella jurassica and Marzoella ficcarellii Assemblage Zone (middle Bajocian), Pseudodictyopsella jurassica‐Paravalvulina complicata Interval Zone (middle Bajocian), Paravalvulina complicata Taxon‐Range Zone (latest Bajocian), Paleopfenderina salernitana Taxon‐Range Zone (Bathonian‐?earliest Callovian), and Satorina apuliensis Taxon‐Range Subzone (Late Bathonian). Among the calcareous algae, Selliporella donzellii flourished during the Late Bajocian and Early Bathonian (Prtoljan et al., 2015; Sokač & Grgasović, 2017; Velić & Sokač, 1978). Based on the above, the studied succession ranges from the base of the upper Bajocian (∼ Strenoceras niortense ammonite Zone) to the base of the Callovian ( Bullatimorphites bullatus ammonite Zone; Hesselbo et al., 2020, their Figure 26.10), with a duration of 3.2 Myr (Huang, 2018) to ∼4.5 Myr (cf., Hesselbo et al., 2020).…”

Section: Geologic Setting Facies and Methodsmentioning

confidence: 99%

Milankovitch Record From Middle Jurassic Platform Supports Moderate Coolhouse Glaciation

Husinec,

Read

2023

Paleoceanog and Paleoclimatol

View full text Add to dashboard Cite

There are few documentations of far‐field effects of coolhouse glaciation and its signature preserved within Middle Jurassic carbonate platforms. Through outcrop logging and time series analysis we document the cyclostratigraphy of the upper Bajocian‐Bathonian interval of the Adriatic Platform, Croatia. The 200 m thick, ∼3.3 Myr duration cyclic platform record consists of peritidal carbonate parasequences (n = 109) with high‐energy grainstone‐rudstone bases fining up into micritic carbonate caps. There is little evidence of long‐term exposure near purported sequence boundaries, indicating the succession is conformable above the parasequence scale. Time series were constructed using Dunham rank and stratigraphic position, and parasequence thickness and stratigraphic position. A statistical estimation of accumulation rates using average spectral misfit (ASM) and correlation coefficient (COCO) methods that compare spectral peaks with an astronomical model at various sedimentation rates suggests that these rates ranged from 4.5 to 6 cm/kyr, which is compatible with long‐term rates based on thickness divided by duration. The time series analysis of rank series and cycle thickness series indicates long‐term obliquity modulation (∼1 Myr), short obliquity modulation (173 kyr), strong obliquity, and weak precession. The 173 kyr cycle is particularly evident in the cycle thickness series. The similarity of the spectra to the obliquity‐dominated Cenozoic coolhouse supports moderate southern hemisphere glaciation driving glacioeustatic sea level changes during the Middle Jurassic.

show abstract