Organic-matter-rich shales are the main target rocks for unconventional oil and gas
exploration and development across the world. In China, shale-gas geological resources …

The Ordovician Period (~ 485-444 Ma) was an interval of major, causally interconnected 15
changes in the Earth's biotic, climatic, and environmental systems. The diversity of marine …

The temporal link between large igneous province (LIP) eruptions and at least half of the
major extinctions of the Phanerozoic implies that large scale volcanism is the main driver of …

The early evolutionary and much of the extinction history of marine animals is thought to be
driven by changes in dissolved oxygen concentrations ([O2]) in the ocean,–. In turn,[O2] is …

Abstract The Late Ordovician mass extinction (LOME, ca. 445 Ma) was the first of the “Big
Five” Phanerozoic extinction events and comprised two extinction pulses. Proposed kill …

The main controlling factors of organic matter accumulation in the Upper Ordovician Wufeng–
Lower Silurian Longmaxi Formations are complex and remain highly controversial. This …

To explore the sedimentary environment and the background of the source area of organic-
rich shales in the Wufeng–Longmaxi Formations in the northern Sichuan Basin, samples …

Abstract The Late Ordovician mass extinction (LOME), one of the five largest Phanerozoic
biodiversity depletions, occurred in two pulses associated with the expansion and …

The largest radiation of Phanerozoic marine animal life quadrupled genus-level diversity
towards the end of the Ordovician Period about 450 million years ago. A leading hypothesis …

The temporal and spatial distribution of Hirnantian brachiopod faunas are reviewed based
on a new, comprehensive dataset from over 20 palaeoplates and terranes, a revised …