Pliensbachian - Wikipedia
The Pliensbachian is an age of the geologic timescale and stage in the stratigraphic column. It is part of the Early or Lower Jurassic Epoch or Series and spans the time between 192.9 ±0.3 Ma and 184.2 ±0.3 Ma (million years ago). [4] The Pliensbachian is preceded by the Sinemurian and followed by the Toarcian. [5]
Pliensbachian Stage | Triassic Period, Marine Sediments & Fossils ...
Pliensbachian Stage, third of the four divisions of the Lower Jurassic Series, representing all rocks formed worldwide during the Pliensbachian Age, which occurred between 190.8 million and 182.7 million years ago during the Early Jurassic Period. The …
普林斯巴赫阶 - 百度百科
普林斯巴赫阶 （Pliensbachian Stage）位于 西涅缪尔阶 之上， 图阿尔阶 以下，是欧洲下侏罗统的第三个阶。普林斯巴赫阶一名源自德国一地名普林斯巴赫（Pliensbach）。其底界以菊石Bifericeras donovani,Apoderoceras和Gleviceras的首现为标志。 [1]
Toarcian Oceanic Anoxic Event - Wikipedia
The Toarcian extinction event, also called the Pliensbachian-Toarcian extinction event, [1] [2] the Early Toarcian mass extinction, [3] the Early Toarcian palaeoenvironmental crisis, [4] or the Jenkyns Event, [5] [6] [7] was an extinction event that occurred during the early part of the Toarcian age, approximately 183 million years ago, during ...
Pliensbachian - an overview | ScienceDirect Topics
The Tilje Formation (Pliensbachian, Early Jurassic) occurs in the subsurface of the Halten Terrace, which lies 100–200 km northwest (seaward) of Trondheim, Norway, beneath the Norwegian continental shelf (Fig. 1.13 A and B).
Astrochronology and sedimentary noise modeling of Pliensbachian …
2023年7月15日 · Anchored in numerical time, our new Pliensbachian timescale can be correlated with the thicker, likely more complete, astronomically calibrated Pliensbachian record in the Mochras Farm (Llanbedr) borehole. This exercise suggests the presence of significant hiatuses near the base and top of the Sancerre-Couy record.
Latest Pliensbachian to Early Toarcian depositional environment …
2024年6月27日 · The succession from Hondelage in the NGB covers the latest Pliensbachian to Early Toarcian interval including the Toarcian Carbon Isotope Excursion (T-CIE). Bio- and chemostratigraphic data suggest that the Pliensbachian Toarcian boundary and parts of the lower D. tenuicostum Zone are missing.
New age constraints on the Lower Jurassic Pliensbachian ... - Nature
2022年3月23日 · The Pliensbachian–Toarcian boundary interval is characterized by a ~ 3‰ negative carbon-isotope excursion (CIE) in organic and inorganic marine and terrestrial archives from sections in Europe,...
More gaps than record! A new look at the Pliensbachian/Toarcian ...
2023年1月15日 · The Pliensbachian – Toarcian transition is characterized by declining carbonate production due to the onset of the Pl/To environmental perturbation (Wilmsen and Neuweiler, 2008; Krencker et al., 2020; Andrieu et al., 2022).
extinction rate at the end of the Pliensbachian (Spinatum Zone) and beginning of the Toarcian (Tenuicostatum Zone; Fig. 1). Breakdown of the bivalve species into ecological groups fails