Palynostratigraphy and climatic implications of Neogene deposits in the Himi area of Toyama Prefecture, Central Japan

Wang, Weiming; Saito, Takehisa; Nakagawa, Tomio

doi:10.1016/s0034-6667(01)00097-5

Cited by 29 publications

(29 citation statements)

References 9 publications

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“…Although the general climate pattern during the late Miocene -Pliocene displays to some extent of climatic drought, a remarkable warm/humid event occurred at 5.8-3.9 Ma ago marked by high percentages of warmtemperate elements of Quercus, Juglans, the presence of the subtropical evergreen tree pollen of Carya, as well as the aquatic taxa of Typha and Cyperaceae. Our results are in consistence with the other long-term pollen data which suggest warm and humid conditions during the early Pliocene in China [Wu, 2001;Li et al, 2005], central Japan [Wang et al, 2001] and Sub-Himalayan [Hoorn et al, 2000].…”

Section: Climatic Implicationssupporting

confidence: 92%

Late Cenozoic magnetochronology and paleoenvironmental changes in the northern foreland basin of the Tian Shan Mountains

Sun

Huang

2007

J. Geophys. Res.

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[1] The folded Neogene deposits in the northern foreland basin of the Tian Shan Mountains provide important information about tectonic history and environmental changes of northwestern China. On the basis of lithostratigraphic and magnetostratigraphic evidence, we develop a new chronology for the previous studied Kuitun He section. Our palynological study on the late Miocene-Pliocene sediment of the Dushanzi section yields new information about vegetation and climate change during the period of 8.7-2.58 Ma. The results indicate that steppe taxa (Artemisia and Chenopodiaceae) were generally dominant in the studied areas between 8.7 and 2.58 Ma, implying that a dry climate has occurred in the inland basins of northwestern China at least since 8.7 Ma ago. Although the general climate pattern indicated by our palynological results displays to some extent of drought, a warm and humid phase occurred at 5.8-3.9 Ma ago. This climatic optimum is comparable with the other records from the Chinese Loess Plateau, central Japan, the Sub-Himalayan Zone, and the marine eustatic sea level rise, implying this seems to be, at least, a regional climatic optimum.

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Section: Climatic Implicationssupporting

confidence: 92%

Late Cenozoic magnetochronology and paleoenvironmental changes in the northern foreland basin of the Tian Shan Mountains

Sun

Huang

2007

J. Geophys. Res.

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“…The present results exhibit a general temperature decline in the northern high-and mid-latitudes. This agrees with the proxy record in Alaska, Iceland, Siberia (Steppuhn et al 2007), Europe (Mosbrugger et al 2005;Bruch et al 2004Bruch et al , 2006, Asia (Bruch and Gabrielyan 2002;Xu et al 2008;Wang et al 2001) and North America (Axelrod and Bailey 1969;Baghai and Jorstad 1995). Nevertheless, the vegetation-induced temperature decline in the high-and mid-latitudes is weaker than found in the proxy record (Steppuhn et al 2007) and represents only one piece of the Cenozoic cooling puzzle.…”

Section: Discussionsupporting

confidence: 83%

Climate impact of high northern vegetation: Late Miocene and present

Schneck

Micheels

Mosbrugger

2011

Int J Earth Sci (Geol Rundsch)

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“…Notably, most records from these four regions have shown drying and cooling trends during the Miocene (e.g., Europe: Mosbrugger et al, 2005;Utescher et al, 2007;Jiménez-Moreno et al, 2010;high-latitudes: White et al, 1997; East Asia and South Asia: Quade et al, 1989Quade et al, , 1995Wang et al, 2001;Clift, 2006;Clift et al, 2008;Passey et al, 2009;Wan et al, 2010). In the western Qaidam Basin, the long-term trends of xerophytic percentages, coniferous percentages and ln (NAP/AP) covering 18-5 Ma and 3.1-0 Ma further support this model.…”

Section: Global Cooling and Tibetan Plateau Upliftmentioning

confidence: 71%

Late Cenozoic continuous aridification in the western Qaidam Basin: evidence from sporopollen records

Miao

Fang

et al. 2013

Clim. Past

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Cenozoic climate changes in inner Asia provide a basis for understanding linkages between global cooling, the Tibetan Plateau uplift, and possibly the development of the East Asian monsoon. Based on a compilation of palynological results from the western Qaidam Basin, this study reconstructed a 15-million-year (Ma) record of changing vegetation and paleoclimates spanning the middle Miocene to present (comprising two series: ~ 18–5 Ma and ~ 3.1–0 Ma, respectively). The thermophilic percentages were highest between 18 and 14 Ma, and decreased after 14 Ma, closely corresponding to the Middle Miocene Climatic Optimum (MMCO) between 18 and 14 Ma and the following global climatic cooling between 14 and 5 Ma. At the same time, decreases in the xerophytic and coniferous taxa percentages, and the increasing logarithmic ratio of non-arboreal pollen to arboreal pollen (ln (NAP/AP)), reveal the continuous aridification across both the basin and surrounding mountains. Between ~ 3.1 and 0 Ma, the percentages of the thermophilic, xerophytic and coniferous pollen as well as the ln (NAP/AP) imply further cooling and drying in this region since 3.1 Ma. We argue that these vegetation and climate patterns during the late Cenozoic western Qaidam Basin are primarily a result of the global cooling, with the Tibetan Plateau uplift and East Asian summer monsoon having contributions of lesser importance

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Palynostratigraphy and climatic implications of Neogene deposits in the Himi area of Toyama Prefecture, Central Japan

Cited by 29 publications

References 9 publications

Late Cenozoic magnetochronology and paleoenvironmental changes in the northern foreland basin of the Tian Shan Mountains

Late Cenozoic magnetochronology and paleoenvironmental changes in the northern foreland basin of the Tian Shan Mountains

Climate impact of high northern vegetation: Late Miocene and present

Late Cenozoic continuous aridification in the western Qaidam Basin: evidence from sporopollen records

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