The Barremian-Aptian boundary in the Poggio le Guaine core (central Italy): Evidence for magnetic polarity Chron M0r and oceanic anoxic event 1a

2016 ◽  
pp. 57-78 ◽  
Author(s):  
Jairo F. Savian ◽  
Ricardo Trindade ◽  
Liliane Janikian ◽  
Luigi Jovane ◽  
Renato Paes de Almeida ◽  
...  
Keyword(s):  
Central Italy ◽  
Magnetic Polarity ◽  
Oceanic Anoxic Event ◽  
Anoxic Event

Major and trace element characterization of Oceanic Anoxic Event 1d (OAE 1d): Insight from the Umbria-Marche Basin, central Italy

2020 ◽  
Vol 557 ◽  
pp. 119834
Author(s):  
G. Gambacorta ◽  
C. Bottini ◽  
H.-J. Brumsack ◽  
B. Schnetger ◽  
E. Erba
Keyword(s):  
Trace Element ◽  
Central Italy ◽  
Oceanic Anoxic Event ◽  
Anoxic Event

Carbon cycle perturbation and mercury anomalies in terrestrial Oceanic Anoxic Event 1b from Jiuquan Basin, NW China

2022 ◽  
pp. SP521-2021-149
Author(s):  
Xiangdong Zhao ◽  
Daran Zheng ◽  
He Wang ◽  
Yanan Fang ◽  
Naihua Xue ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Cycle ◽  
Central Italy ◽  
Lacustrine Sediments ◽  
Terrestrial Ecosystem ◽  
Western Tethys ◽  
Oceanic Anoxic Event ◽  
Anoxic Event ◽  
Carbon Reservoir ◽  
Global Carbon

AbstractThe Oceanic Anoxic Event (OAE) 1b is well documented in western Tethys, however, records in Eurasia are still lacking. Here, we carried out high-resolution organic carbon isotope (δ13Corg), total organic carbon (TOC) contents and mercury (Hg) concentrations analysis of the lacustrine sediments from the Xiagou and Zhonggou formations in the Hanxiagou section, Jiuquan Basin, northwestern China. The lacustrine δ13Corg curve presents three stages of negative excursions above the basalt layer dated at 112.4 ± 0.3 Ma in the lowermost Zhonggou Formation. The three negative δ13Corg excursions, well corresponded with the three subevents (Kilian, Paquier, and Leenhardt) of the OAE1b in Poggio le Guaine (central Italy), Vocontian Basin (SE France) and St Rosa Canyon (NE Mexico) sections, supporting the record of the terrestrial OAE 1b in the Jiuquan Basin. Five mercury enrichment (ME) intervals in Hg/TOC ratios were recognized, indicating that the pulsed volcanism from the southern Kerguelen Plateau likely triggered the OAE 1b. However, the decoupling between NIE shifts and mercury enrichments signifying other carbon reservoir (with no link to mercury) probably contributed to the global carbon cycle perturbation during the OAE 1b period. Our results provide direct evidence to link the OAE 1b and terrestrial ecosystem in the Eurasia.

scholarly journals Patterns of local and global redox variability during the Cenomanian–Turonian Boundary Event (Oceanic Anoxic Event 2) recorded in carbonates and shales from central Italy

Sedimentology ◽  
2017 ◽  
Vol 64 (1) ◽  
pp. 168-185 ◽  
Author(s):  
Jeremy D. Owens ◽  
Timothy W. Lyons ◽  
Dalton S. Hardisty ◽  
Chris M. Lowery ◽  
Zunli Lu ◽  
...  
Keyword(s):  
Central Italy ◽  
Oceanic Anoxic Event ◽  
Oceanic Anoxic Event 2 ◽  
Anoxic Event

High-resolution chemostratigraphy of the late Aptian–early Albian oceanic anoxic event (OAE 1b) from the Poggio le Guaine section (Umbria–Marche Basin, central Italy)

2015 ◽  
Vol 426 ◽  
pp. 319-333 ◽  
Author(s):  
Nadia Sabatino ◽  
Rodolfo Coccioni ◽  
Daniela Salvagio Manta ◽  
François Baudin ◽  
Mattia Vallefuoco ◽  
...  
Keyword(s):  
High Resolution ◽  
Central Italy ◽  
Oceanic Anoxic Event ◽  
Anoxic Event
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