Results 91 to 100 of about 11,694 (205)

A Revised Cenozoic Geochronology and Chronostratigraphy

, 1995
Since the publication of our previous time scale (Berggren and others, 1985c = BKFV85) a large amount of new magneto- and biostratigraphic data and radioisotopic ages have become available. An evaluation of some of the key magnetobiostratigraphic calibration points used in BKFV85, as suggested by high precision 40Ar/39Ar dating (e.g., Montanari and ...
Berggren, William A., Kent, Dennis V., Swisher, Carl C., Aubry, Marie-Pierre   +3 more
openaire   +2 more sources

Age of Barrier Canyon-style rock art constrained by cross-cutting relations and luminescence dating techniques [PDF]

, 2014
Rock art compels interest from both researchers and a broader public, inspiring many hypotheses about its cultural origin and meaning, but it is notoriously difficult to date numerically. Barrier Canyon-style (BCS) pictographs of the Colorado Plateau are
Chapot, Melissa S., Cox, Gary, Murray, Andrew Sean, Pederson, Joel L., Rittenour, Tammy M., Simms, Steven R., Sohbati, Reza   +6 more
core   +2 more sources

Pliocene integrated chronostratigraphy from the Anno Formation, Awa Group, Boso Peninsula, central Japan, and its paleoceanographic implications

Progress in Earth and Planetary Science, 2019
The Pliocene climate is one of the best analogs for the climate of a globally warmer future. Here, we present a new Pliocene integrated chronostratigraphy from the Anno Formation in the uppermost Awa Group, which is distributed throughout the Boso ...
Yuki Haneda, Makoto Okada
doaj   +1 more source

The ‘Anthropocene Proposal’: A Possible Quandary and A Work-Around

Quaternary, 2019
The debates about naming the unfolding times of anthropogenic global change the ‘Anthropocene’ are ultimately debates about the ‘human condition’.
Martin Bohle, Nic Bilham
doaj   +1 more source

A summary of terminology used in tephra-related studies [PDF]

, 2001
The word ‘tephra’, derived from a Greek word for ash, is a collective term for all the unconsolidated, primary pyroclastic products of a volcanic eruption.
Hunt, John B., Lowe, David J.
core   +1 more source

Constraining shifts in North Atlantic plate motions during the Palaeocene by U-Pb dating of Svalbard tephra layers

Scientific Reports, 2017
Radioisotopic dating of volcanic minerals is a powerful method for establishing absolute time constraints in sedimentary basins, which improves our understanding of the chronostratigraphy and evolution of basin processes.
Morgan T. Jones, Lars E. Augland, Grace E. Shephard, Seth D. Burgess, Gauti T. Eliassen, Malte M. Jochmann, Bjarki Friis, Dougal A. Jerram, Sverre Planke, Henrik H. Svensen   +9 more
doaj   +1 more source

Chronostratigraphy of sediment cores from Lake Selina, southeastern Australia: Radiocarbon, optically stimulated luminescence, paleomagnetism, authigenic beryllium isotopes and elemental data. [PDF]

Data Brief, 2022
Lisé-Pronovost A, Fletcher MS, Simon Q, Jacobs Z, Gadd PS, Herries AIR, Yokoyama Y, Aster team.   +7 more
europepmc   +1 more source

A new genus and species of sabretooth, Oriensmilus liupanensis (Barbourofelinae, Nimravidae, Carnivora), from the middle Miocene of China suggests barbourofelines are nimravids, not felids [PDF]

, 2020
Since the early 2000s, a revival of a felid relationship for barbourofeline sabretooths has become popular due to recent discoveries of fragmentary fossils from Africa.
Guan, Jian, Wang, Xiaoming, White, Stuart C   +2 more
core  

Usolka section (southern Urals, Russia): a potential candidate for GSSP to define the base of the Gzhelian Stage in the global chronostratigraphic scale

Geologija, 2006
Conodont species Streptognathodus simulator Ellison, 1941 has been proposed recently to define the Kasimovian-Gzhelian boundary in the global chronostratigraphic scale.The species distributed globally and traditionally has been used as a marker of the ...
Valery V. Chernykh, Boris I. Chuashov, Vladimir I. Davydov, Mark Schmitz, walter S. Snyder   +4 more
doaj  

Chronostratigraphy and tectono‐sedimentary history of the Eastern South Pyrenean foreland basin (Ripoll Syncline, North‐East Spain)

The Depositional Record
This paper contributes to an understanding of the tectono‐sedimentary evolution of the South Pyrenean foreland system by reviewing the chronostratigraphic framework of the basin infill in its eastern sector. Six sections are analysed and cross‐correlated
Philémon Juvany, Miguel Garcés, Miguel Lopez‐Blanco, Carles Martín Closas, Elisabet Beamud Amorós, Josep Tosquella, Susanna Emilia Bekkevold   +6 more
doaj   +1 more source