A comprehensive, illustrated guide to the preparation (ie extraction, concentration and
microscope slide production) of palynomorphs from samples of sediments, sedimentary …

Abstract The Late Ordovician (Katian-Hirnantian) through earliest Silurian (Rhuddanian)
interval was a time of varying climate and sea level, marked by a peak glacial episode in the …

随着非常规油气资源工业化勘探开发的快速发展, 非常规油气地质学理论体系逐步建立,
迫切需要创新构建非常规油气沉积学理论. 通过简要概述非常规油气沉积学的基本内涵 …

The theoretical framework of Unconventional Petroleum Geology has been gradually
established along with the rapid progresses in exploration and development of …

Abstract The Cambrian 'Explosion', located by many authors between 540 and 520 million
years ago (Ma), is considered to be an abrupt appearance in the fossil record of most animal …

The greatest relative changes in marine biodiversity accumulation occurred during the Early
Paleozoic. The precision of temporal constraints on these changes is crude, hampering our …

Shale gas resources in China are abundant with the marine shales accounting for the
largest proportion, ie 13× 10 12 m 3. The Wufeng-Longmaxi Shale system deposited across …

The Ordovician biodiversification is considered one of the most significant radiations in the
marine ecosystems of the entire Phanerozoic. Originally recognized as the 'Ordovician …

The end-Ordovician was an enigmatic interval in the Phanerozoic, known for massive
glaciation potentially at elevated CO2 levels, biogeochemical cycle disruptions recorded as …

Selectivity patterns provide insights into the causes of ancient extinction events. The Late
Ordovician mass extinction was related to Gondwanan glaciation; however, it is still unclear …