Moisture variations in Lacustrine−eolian sequence from the Hunshandake sandy land associated with the East Asian Summer Monsoon changes since the late Pleistocene

Guodong Ming, Weijian Zhou, Hong Wang, Peng Cheng, Peixian Shu, Feng Xian, Yunchong Fu

Research output: Contribution to journalArticlepeer-review

Abstract

Paleoclimate records currently lack sufficient geographic detail to understand the spatiotemporal evolution of East Asian Summer Monsoon (EASM) rain belt since the late Pleistocene. In particular, there is no consensus on whether the EASM rain belt reached its modern northern limit by the early Holocene. Here, we present inferred moisture variations from a multi-parameter, absolute-dated lacustrine−eolian sequence from northern China that date back to the late Pleistocene (∼14 ka BP or thousand years ago). We observed a sharp transition towards wet conditions at the onset of the Holocene Epoch. Maximum wet climate occurred here during ∼11.3–8.5 ka. The climate remained predominantly wet until ∼4.2 ka, then it became progressively drier. We observed alternating organic-rich, fine-grained lake deposits and organic-depleted, coarse-grained eolian sand layers during ∼14−7 ka. These layers correspond to sedimentation associated with the Allerød, Younger Dryas (YD), post YD warming, pre-Boreal oscillation (PBO), early Holocene and 8.2 ka event. We interpreted the orbital scale moisture variation at our study site to the changes in insolation, assigning these abrupt and short-lived changes during the late Pleistocene−Holocene transition to a persistent teleconnection between the North Atlantic and east Asian climate zones.

Original languageEnglish (US)
Article number106210
JournalQuaternary Science Reviews
Volume233
DOIs
StatePublished - Apr 1 2020
Externally publishedYes

Keywords

  • Climate instability
  • Desert−loess transition zone
  • Lacustrine−eolian sequence
  • Monsoon rainfall
  • Northern China
  • Paleo EASM variations

ASJC Scopus subject areas

  • Global and Planetary Change
  • Ecology, Evolution, Behavior and Systematics
  • Archaeology
  • Archaeology
  • Geology

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