Results 231 to 240 of about 1,776,549 (292)

Conditions and timing for the precipitation of early marine diagenetic dolomite in the Triassic Dolomia Principale (northern Italy)

Sedimentology, EarlyView.
ABSTRACT Thermodynamic constraints and empirical evidence often suggest that fabric‐retentive replacement dolomites are stable carbonate minerals that preserve ancient seawater properties. This study evaluates this hypothesis by examining the Upper Triassic Dolomia Principale in Northern Italy.
Vivien Folliot, Giovanna Della Porta, Mathias Mueller, Fabrizio Berra, Benjamin F. Walter, Aratz Beranoaguirre, Sylvia Riechelmann, Oskar Schramm, Adrian Immenhauser   +8 more
wiley   +1 more source

Fossil Plants from the Late Cretaceous of Tennessee [PDF]

Proceedings of the National Academy of Sciences, 1920
openaire   +2 more sources

Late Cretaceous ammonoids show that drivers of diversification are regionally heterogeneous. [PDF]

Nat Commun
Flannery-Sutherland JT, Crossan CD, Myers CE, Hendy AJW, Landman NH, Witts JD.   +5 more
europepmc   +1 more source

Siliceous sponges or seawater as a silicon source? Tracing silicon burial pathways of the Upper Cretaceous opal‐CT deposits using δ30Si and δ7Li

Sedimentology, EarlyView.
ABSTRACT Classical models of formation of sedimentary siliceous rocks (flint, chert, opoka) commonly assume that the Cretaceous marine silicon (Si) cycle was primarily biologically controlled, broadly analogous to the modern ocean. In this framework, siliceous sponges are regarded as the principal source of dissolved silica (dSi) to sediment porewaters,
Agata Jurkowska, Ewa Świerczewska‐Gładysz, Marek Szczerba, Tomáš Magna, Szymon Kowalik Filipowicz   +4 more
wiley   +1 more source

A nitrogen isotopic shift in fish otolith-bound organic matter during the Late Cretaceous. [PDF]

Proc Natl Acad Sci U S A
Rao ZC, Lueders-Dumont JA, Stringer GL, Ryu Y, Zhao K, Myneni SC, Oleynik S, Haug GH, Martinez-Garcia A, Sigman DM.   +9 more
europepmc   +1 more source

Gravel and sand barrier preservation at geological (Cenozoic) timescales: Insights from the southern Namibia continental shelf

Sedimentology, EarlyView.
ABSTRACT An apparent disconnect exists between the morphology and behaviour of modern coastal barriers and barrier‐associated sediments preserved in the geological record, reflecting modification and selective preservation over geological timescales.
Andrew Green, Andrew Cooper, Marinja Bester, Lynette Kirkpatrick   +3 more
wiley   +1 more source

The paleoecology and taphonomy of a Santonian-Campanian (Upper Cretaceous) dinosaur-bearing vertebrate locality from Bulgaria: a window into an underexplored part of the Late Cretaceous European Archipelago. [PDF]

Swiss J Palaeontol
Nikolov V, Pavlishina P, Dochev D, Brusatte SL.   +3 more
europepmc   +1 more source

U–Pb Dating of Cambrian Magmatism in the Pinerolo‐Sanfront Unit, Dora‐Maira Massif (Western Alps)

Terra Nova, EarlyView.
ABSTRACT The Pinerolo‐Sanfront Unit (PSU), the structurally lowest tectonic unit of the Dora‐Maira Massif (Western Alps), has been regarded as a monocyclic unit composed of Permo‐Carboniferous sediments and Permian granitoids that were metamorphosed during the Alpine orogeny.
Francesco De Cesari, Davide Dana, Salvatore Iaccarino, Chiara Montomoli, Alberto Corno, Daniela Rubatto, Rodolfo Carosi   +6 more
wiley   +1 more source

New monstersaur specimens from the Kaiparowits Formation of Utah reveal unexpected richness of large-bodied lizards in Late Cretaceous North America. [PDF]

R Soc Open Sci
Woolley CH, Sertich JJW, Melstrom KM, Irmis RB, Smith ND.   +4 more
europepmc   +1 more source

A Spanish saltasauroid titanosaur reveals Europe as a melting pot of endemic and immigrant sauropods in the Late Cretaceous. [PDF]

Commun Biol
Mocho P, Escaso F, Marcos-Fernández F, Páramo A, Sanz JL, Vidal D, Ortega F.   +6 more
europepmc   +1 more source