The Cretaceous–Paleogene (K–Pg) boundary, formerly known as the Cretaceous–Tertiary (K–T) boundary, is a geological signature, usually a thin band of rock...
28 KB (3,035 words) - 22:20, 9 October 2024
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the K–T extinction, was the mass extinction of three-quarters of the plant and animal species...
200 KB (21,686 words) - 18:46, 3 October 2024
the Gulf of Mexico. The end of the Cretaceous is defined by the abrupt Cretaceous–Paleogene boundary (K–Pg boundary), a geologic signature associated with...
95 KB (9,855 words) - 21:37, 4 October 2024
The climate across the Cretaceous–Paleogene boundary (K–Pg or formerly the K–T boundary) is very important to geologic time as it marks a catastrophic...
23 KB (3,147 words) - 07:30, 13 February 2024
of the world, known as the Cretaceous–Paleogene boundary (K–T boundary). K is the traditional abbreviation for the Cretaceous Period derived from the German...
18 KB (1,693 words) - 20:20, 3 October 2024
century, a significant amount of research has been conducted on the Cretaceous–Paleogene extinction event, the mass extinction that ended the dinosaur-dominated...
120 KB (12,560 words) - 14:02, 2 September 2024
Chicxulub crater (category Cretaceous–Paleogene boundary)
date of the impact coincides with the Cretaceous–Paleogene boundary (commonly known as the K–Pg or K–T boundary). It is now widely accepted that the devastation...
84 KB (8,236 words) - 19:19, 8 October 2024
Nadir crater (category Cretaceous–Paleogene boundary)
height of the central uplift. It was formed at or near the Cretaceous–Paleogene boundary about 66 million years ago, around the same time as the Chicxulub...
6 KB (625 words) - 22:45, 5 October 2024
by an asteroid impact, and is associated with the Cretaceous–Paleogene extinction event. The boundary is defined as the rusty colored base of a 50 cm thick...
62 KB (6,978 words) - 10:55, 9 October 2024
unusually high abundance of iridium in the clay layer at the Cretaceous–Paleogene boundary gave rise to the Alvarez hypothesis that the impact of a massive...
82 KB (7,852 words) - 19:07, 16 September 2024
Shiva crater (category Cretaceous–Paleogene boundary)
500-kilometre (310 mi) impact crater, that formed around the Cretaceous-Paleogene boundary. Chatterjee and colleagues have claimed that this could have...
11 KB (1,214 words) - 07:27, 27 September 2023
Alvarez hypothesis (category Cretaceous–Paleogene boundary)
the non-avian dinosaurs and many other living things during the Cretaceous–Paleogene extinction event was caused by the impact of a large asteroid on...
21 KB (2,437 words) - 17:52, 6 June 2024
wrought by large errors in geomagnetic reversal timing around the Cretaceous–Paleogene boundary, and that a recalibration of the time scale shows no such acceleration...
14 KB (1,556 words) - 23:17, 6 October 2024
Iridium anomaly (category Cretaceous–Paleogene boundary)
chemical element iridium in a layer of rock strata at the Cretaceous–Paleogene (K–Pg) boundary. The unusually high concentration of a rare metal like iridium...
5 KB (531 words) - 23:28, 30 August 2024
Deccan Traps (category Cretaceous paleontological sites of Asia)
spanning the Cretaceous–Paleogene boundary. While some authors have suggested that the eruptions were the primary cause of the Cretaceous–Paleogene mass extinction...
31 KB (3,490 words) - 01:45, 6 October 2024
Boltysh crater (category Cretaceous–Paleogene boundary)
the Cretaceous–Paleogene boundary (K–Pg boundary). The Chicxulub impact is believed to have caused the mass extinction at the end of the Cretaceous period...
8 KB (938 words) - 18:21, 29 August 2023
Maastrichtian (category Late Cretaceous)
the Danian (part of the Paleogene and Paleocene). The Cretaceous–Paleogene extinction event (formerly known as the Cretaceous–Tertiary extinction event)...
16 KB (1,396 words) - 22:20, 13 August 2024
Hell Creek Formation (category Paleogene Montana)
prolonged annual cold. The famous iridium-enriched Cretaceous–Paleogene boundary, which separates the Cretaceous from the Cenozoic, occurs as a discontinuous...
46 KB (4,521 words) - 10:05, 4 September 2024
Trinidad Lake State Park (redirect from Trinidad K-T Boundary Natural Area)
the coal mining ruins at Cokedale. An exposure of the Cretaceous–Paleogene boundary (K–Pg boundary) is visible in the southern part of the park. A portion...
2 KB (123 words) - 03:10, 6 December 2023
Tanis (fossil site) (category Cretaceous–Paleogene boundary)
fronting the late Cretaceous Western Interior Seaway. The iridium-enriched Cretaceous–Paleogene boundary, which separates the Cretaceous from the Cenozoic...
31 KB (3,537 words) - 02:51, 12 August 2024
Lopez de Bertodano Formation (category Cretaceous–Paleogene boundary)
to 65.5 million years ago, straddling the Cretaceous-Paleogene boundary. The Cretaceous–Paleogene boundary (K–Pg) crops out on Seymour Island in the upper...
44 KB (2,688 words) - 20:45, 3 October 2024
diversification of three major clades of Gondwanan frogs at the Cretaceous–Paleogene boundary". Proceedings of the National Academy of Sciences. 114 (29):...
26 KB (3,373 words) - 08:06, 30 May 2024
fossils and provide amongst the best on-land evidence of the Cretaceous–Paleogene boundary in marine sediments in the Southern Hemisphere. Ward Beach has...
23 KB (2,181 words) - 22:25, 14 July 2024
and most richly fossiliferous sequence of beds spanning the Cretaceous-Paleogene boundary in any single sedimentary basin in the world. These include...
15 KB (1,652 words) - 03:24, 2 August 2024
to have been named. Ichthyornitheans became extinct at the Cretaceous–Paleogene boundary, along with enantiornitheans, all other non-avian dinosaurs...
10 KB (1,146 words) - 11:23, 23 April 2024
epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event approximately 66 mya. Dinosaurs can therefore be...
283 KB (28,268 words) - 11:09, 10 October 2024
in the Cretaceous, lived in high paleolatitudes and had adaptations to seasonal environments which allowed it to survive the Cretaceous–Paleogene extinction...
167 KB (10,751 words) - 23:31, 29 September 2024
Paleocene (category Paleogene geochronology)
"The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary" (PDF). Science. 327 (5970): 1214–1218. Bibcode:2010Sci...327...
154 KB (17,377 words) - 07:58, 4 October 2024
(modern day) Climate change (general concept) Climate across Cretaceous–Paleogene boundary Thermal history of Earth Geologic temperature record Timeline...
7 KB (311 words) - 05:03, 15 April 2024
Denver Formation (category Cretaceous–Paleogene boundary)
Cretaceous (Maastrichtian) to early Paleocene, and includes sediments that were deposited before, during and after the Cretaceous-Paleogene boundary event...
12 KB (1,016 words) - 02:38, 30 January 2023