The Quaternary period, 2.58 Ma to present, is characterized by multiple expansions and reductions in polar ice sheets. A key driver of Quaternary ice ages is the quasi-periodic change in the Earth's orbit on 22, 41, and 100 thousand-year timescales. Because the shifts in solar energy distribution across the Earth's surface are too weak to ...

Quaternary Environments and Humans (QEH) is the full Open Access, official journal of the International Union for Quaternary Research (INQUA). The journal aims to publish peer reviewed papers under the auspices of the leading Quaternary association, with a special focus on recent advances in … View full aims & scope

Quaternary Environments and Humans (QEH) is the full Open Access, official journal of the International Union for Quaternary Research (INQUA). The journal aims to publish peer reviewed papers under the auspices of the leading Quaternary association, with a special focus on recent advances in Quaternary sciences that appeal to a wide audience ...

The Quaternary refers to a past period, approximately 2.59 million years ago to the present, which is extensively studied for understanding biodiversity dynamics and the impact of climate change on species. It is characterized by significant climatic shifts and species' responses in terms of geographical range and community composition.

2015年4月1日 · Keywords: Quaternary; Pleistocene; Holocene; Anthropocene; GSSP Introduction In June, 2009, the Executive Committee of the International Union of Geological Sciences (IUGS EC) ratified a proposal to lower the bases of the Quaternary System and Pleistocene Series to that of the Gelasian Stage, with each now defined at their base by the global ...

2022年1月1日 · The Quaternary begins 2.58 ka ago and is divided into Pleistocene (2.58–11.7 ka) and Holocene (11.7 ka to present) (Gibbard and Cohen, 2008). The most peculiar feature of the Quaternary ice ages was that great ice sheets spread se-veral or seve-ral times over the north of North America and Eurasia ( Figure 2.1 , Figure 2.3 ).

Quaternary Ecology, Evolution, and Biogeography offers an introduction to the study of the ecological and evolutionary processes that have shaped our present biosphere under the influence of glacial-interglacial cycles. Written by an ecologist with paleoecological expertise, this book reviews the climactic changes that have occurred during the ...

The Quaternary is uniquely situated as a laboratory in which to study the shaping of the modern world, including biotic responses to large-scale environmental change. This new edition of this book is the most comprehensive account of state-of-the-art research in this field.

2018年1月1日 · The beginning of the Quaternary, the Early Pleistocene (2.6–0.8 Ma) was characterized by climatic fluctuations dominated by the 41 ka orbital precession cycle, during which relatively few cold periods were sufficiently cold and long to allow the development of substantial ice sheets. Only 14 of the 41 cold stages of that period currently show ...

2015年10月5日 · The rank of the Quaternary is changed from system/period to subsystem/subperiod; its base is formally defined by the Monte San Nicola GSSP. As a result, the Quaternary is composed of the Upper/Late Pliocene, Pleistocene, and Holocene series/epochs.