The origin and early radiation of dinosaurs
Dinosaurs were remarkably successful during the Mesozoic and one subgroup, birds,
remain an important component of modern ecosystems. Although the extinction of non-avian …
remain an important component of modern ecosystems. Although the extinction of non-avian …
The Triassic timescale: new constraints and a review of geochronological data
A review of geochronological data underlying the geological timescale for the Triassic yields
a significantly different timescale calibration than that published in the most recent …
a significantly different timescale calibration than that published in the most recent …
Vertebrate succession in the Ischigualasto Formation
RN Martínez, C Apaldetti, OA Alcober… - Journal of Vertebrate …, 2012 - Taylor & Francis
The Upper Triassic (Carnian–Norian) Ischigualasto Formation has yielded a diverse
vertebrate fauna that records the initial phase of dinosaur evolution. Radioisotopic dates …
vertebrate fauna that records the initial phase of dinosaur evolution. Radioisotopic dates …
Implications of the Newark Supergroup-based astrochronology and geomagnetic polarity time scale (Newark-APTS) for the tempo and mode of the early diversification …
The Newark-APTS established a high-resolution framework for the Late Triassic and Early
Jurassic. Palaeomagnetic polarity correlations to marine sections show that stage-level …
Jurassic. Palaeomagnetic polarity correlations to marine sections show that stage-level …
Eocene clocks agree: Coeval 40Ar/39Ar, U-Pb, and astronomical ages from the Green River Formation
U-Pb ages of zircon from the Firehole and Analcite ash beds in the Eocene Green River
Formation (Wyoming, United States) are indistinguishable from 40Ar/39Ar ages of sanidine …
Formation (Wyoming, United States) are indistinguishable from 40Ar/39Ar ages of sanidine …
The 40Ar/39Ar ages of the sill complex of the Karoo large igneous province: Implications for the Pliensbachian‐Toarcian climate change
F Jourdan, G Féraud, H Bertrand… - Geochemistry …, 2008 - Wiley Online Library
Reliable geochronological results gathered so far (n= 76) have considerably constrained the
timing of the emplacement of the Karoo large igneous province (LIP). Yet strikingly missing …
timing of the emplacement of the Karoo large igneous province (LIP). Yet strikingly missing …
Implications of pre-eruptive magmatic histories of zircons for U–Pb geochronology of silicic extrusions
Zircons in silicic magmas begin to crystallize 10's to 100's of thousands of years (ka) prior to
their eruption. U/Pb and U/Th dating for zircons from 32 young extrusions indicate a range of …
their eruption. U/Pb and U/Th dating for zircons from 32 young extrusions indicate a range of …
An appraisal of the ages of terrestrial impact structures
There are 174 confirmed impact structures known on Earth (eg, http://www. unb. ca/passc/
ImpactDatabase/; late 2008) but a far smaller number of impact structures has yielded a well …
ImpactDatabase/; late 2008) but a far smaller number of impact structures has yielded a well …
40Ar/39Ar ages of CAMP in North America: Implications for the Triassic–Jurassic boundary and the 40K decay constant bias
The Central Atlantic magmatic province (CAMP) is one of the largest igneous provinces on
Earth (> 107 km2), spanning four continents. Recent high-precision 40Ar/39Ar dating of …
Earth (> 107 km2), spanning four continents. Recent high-precision 40Ar/39Ar dating of …
The Rumuruti chondrite group
A Bischoff, N Vogel, J Roszjar - Geochemistry, 2011 - Elsevier
Since 1994, the Rumuruti (R) chondrites have been recognized as a new, well-established
chondrite group differing from carbonaceous, ordinary, and enstatite chondrites. The first R …
chondrite group differing from carbonaceous, ordinary, and enstatite chondrites. The first R …