The interactions between clay minerals and organic matter, specifically adsorption, are
widely recognized as a crucial mechanism for promoting the preservation of organic matter …

The Neoproterozoic provides an important record of glacial–postglacial paleoenvironments,
organic carbon cycling, and hydrocarbon accumulation. Here, to better understand the …

The timing and connections between global cooling, marine redox conditions, and biotic
turnover are underconstrained for the Late Ordovician. The second most severe mass …

Quartz is the main component of marine shale. However, the influence of quartz on shale
gas accumulation is not yet fully understood, especially for deep shale reservoirs. In this …

For more than 10 million years (∼ 272–260 Ma), the Middle Permian underwent periodic
episodes of vigorous upwelling and massive organic matter burial along the west coasts of …

The lacustrine black shales of the Chang 7 member are the main source rocks and the most
important unconventional (shale oil) petroleum resources in the Ordos Basin, North China. A …

The relative sea-level fluctuations play a vital role in the organic matter enrichment of black
shales across the world. The Wufeng-Lower Longmaxi shales deposited during the Late …

This study examines the mechanisms that most influenced the accumulation of shale gas
deposits of the Lower Cambrian Niutitang, Upper Ordovician Wufeng, and Lower Silurian …

Based on the sedimentological and geochemical analysis of total organic carbon (TOC) and
major and trace elements in the marine Upper Ordovician-Lower Silurian Wufeng-Longmaxi …

The shale lithofacies shows obvious heterogeneity during the Late Ordovician-Early Silurian
in the Upper Yangtze area, SW China. To elucidate the Wufeng-Longmaxi shale lithofacies' …