WebMay 23, 2010 · One of the largest mass extinctions of the past 600 million years (Myr) occurred 200 Myr ago, at the Triassic/Jurassic boundary. The major floral and faunal … WebAug 1, 2010 · Triassic–Jurassic boundary. The Triassic–Jurassic boundary in the Junggar Basin, palynostratigraphically placed at the contact of the Haojiagou Formation and the Badaowan Formation by several recent studies (e.g., Ashraf et al. 1999, 2001, 2004; Lu and Deng 2005; Huang 2006), is marked by changes in the composition of palynological ...
The Triassic-Jurassic boundary in the Andes of Argentina
WebThe Triassic-Jurassic boundary is marked by a major extinction in the marine realm. This event, one of the five largest extinctions during the Phanerozoic Eon, is especially well … WebNov 19, 2024 · Winner of the 2024 PROSE Award for Earth Science! Exploring environmental changes through Earth’s geological history using chemostratigraphy. Chemostratigraphy is the study of the chemical characteristics of different rock layers. Decoding this geochemical record across chronostratigraphic boundaries can provide insights into geological history, … scottish technical standards domestic 2020
CO2 and the end-Triassic mass extinction Nature
WebAug 27, 1999 · The Triassic-Jurassic boundary marks a major faunal mass extinction, but records of accompanying environmental changes are limited. Paleobotanical evidence … WebApr 26, 2024 · The Triassic/Jurassic boundary section cropping out at Mt Sparagio in north-western Sicily (Italy) consists of a thick and continuous peritidal succession typical of a Tethyan carbonate platform. The combined chemostratigraphic and biostratigraphic study of this section allowed us to parallel the environmental variations inferred by the isotopic … WebNov 1, 2001 · The Triassic- Jurassic boundary is defined by ammonoid and conodont biostratigraphy in a marine limestone sequence. A decline in primary productivity, release of methane through dissociation of gas hydrates, or a combination of the two may account for the correlative biotic and isotopic events. preschool pet theme activities