Late Cenozoic Eolian deposition in the North Pacific: Asian drying, Tibetan uplift, and cooling of the northern hemisphere

Rea, David K.; Snoeckx, Hilde; Joseph, Leah H

doi:10.1029/98pa00123

Cited by 571 publications

(460 citation statements)

References 66 publications

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“…The oldest eolian loess found in northern China appeared in the early Miocene (22)(23)(24)(25) [4,33,34], a critical period around which the environment transformed from a planetary circulation system into a monsoon-dominated pattern, as indicated by integrated studies of Asian paleoenvironmental records [35][36][37]. Both continental [38] and marine [39] eolian deposition records showed that aridification of inland Asia was significantly intensified during recent 3-4 Ma since the Pliocene.…”

Section: Geological Recordsmentioning

confidence: 99%

“…Some recent geological and environmental records showed that large-scale uplifts might have occurred as early as the Eocene in some areas of the TP [24,25]. Studies on long-term eolian records [4,39] and the transition of Asian paleoenvironmental patterns [35][36][37] suggested that dramatic changes in the Asian monsoon and inland arid environment could have taken place during the early Miocene or late Oligocene. It can be seen from the above statements that at present it may be too early to systematically compare the evidence of the TP uplift during the Cenozoic and the evidence of environmental changes in Asia from a perspective of time.…”

Section: Geological Recordsmentioning

confidence: 99%

“…For example, the climate changes in Asia during the late Miocene shown by some marine and continental records [2,3,7,19,[39][40][41][42] were usually considered as the result of strong TP uplift at the same time. The results of some studies also showed that during the middle and late Pliocene there were remarkable tectonic uplifts in the northern TP, which led to the intensification of the Asian monsoon and significantly increased variability of monsoon since Quaternary [3].…”

Section: Geological Recordsmentioning

confidence: 99%

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Influence of the Tibetan Plateau uplift on the Asian monsoon-arid environment evolution

2013

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As one of the most important geological events in Cenozoic era, the uplift of the Tibetan Plateau (TP) has had profound influences on the Asian and global climate and environment evolution. During the past four decades, many scholars from China and abroad have studied climatic and environmental effects of the TP uplift by using a variety of geological records and paleoclimate numerical simulations. The existing research results enrich our understanding of the mechanisms of Asian monsoon changes and interior aridification, but so far there are still a lot of issues that need to be thought deeply and investigated further. This paper attempts to review the research on the influence of the TP uplift on the Asian monsoon-arid environment, summarize three types of numerical simulations including bulk-plateau uplift, phased uplift and sub-regional uplift, and especially to analyze regional differences in responses of climate and environment to different forms of tectonic uplifts. From previous modeling results, the land-sea distribution and the Himalayan uplift may have a large effect in the establishment and development of the South Asian monsoon. However, the formation and evolution of the monsoon in northern East Asia, the intensified dryness north of the TP and enhanced Asian dust cycle may be more closely related to the uplift of the main body, especially the northern part of the TP. In this review, we also discuss relative roles of the TP uplift and other impact factors, origins of the South Asian monsoon and East Asian monsoon, feedback effects and nonlinear responses of climatic and environmental changes to the plateau uplift. Finally, we make comparisons between numerical simulations and geological records, discuss their uncertainties, and highlight some problems worthy of further studying.Tibetan Plateau, tectonic uplift, Asian monsoon, inland aridity, environmental evolution, geological record, numerical simulation Citation:Liu X D, Dong B W.

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Section: Geological Recordsmentioning

confidence: 99%

Section: Geological Recordsmentioning

confidence: 99%

Section: Geological Recordsmentioning

confidence: 99%

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Influence of the Tibetan Plateau uplift on the Asian monsoon-arid environment evolution

2013

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“…Potential causes of Late Cenozoic Northern Hemisphere Glaciation (NHG) have been widely discussed (e.g. Raymo 1994;Rea et al 1998;Maslin et al 1998;Philander and Fedorov 2003;Ravelo et al 2004Ravelo et al , 2006Bartoli et al 2005;Barreiro et al 2005;Fedorov et al 2006). The final closure of the Panama Seaway, or formation of the 'Isthmus of Panama', has been proposed as a tectonically driven mechanism capable of intensifying NHG around 3 million years ago (3 Ma) (Keigwin 1982;Marshall et al 1982;Bartoli et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Closure of the Panama Seaway during the Pliocene: implications for climate and Northern Hemisphere glaciation

et al. 2007

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The ''Panama Hypothesis'' states that the gradual closure of the Panama Seaway, between 13 million years ago (13 Ma) and 2.6 Ma, led to decreased mixing of Atlantic and Pacific water Masses, the formation of North Atlantic Deep water and strengthening of the Atlantic thermohaline circulation, increased temperatures and evaporation in the North Atlantic, increased precipitation in Northern Hemisphere (NH) high latitudes, culminating in the intensification of Northern Hemisphere Glaciation (NHG) during the Pliocene, 3.2-2.7 Ma. Here we test this hypothesis using a fully coupled, fully dynamic oceanatmosphere general circulation model (GCM) with boundary conditions specific to the Pliocene, and a high resolution dynamic ice sheet model. We carry out two GCM simulations with ''closed'' and ''open'' Panama Seaways, and use the simulated climatologies to force the ice sheet model. We find that the models support the ''Panama Hypothesis'' in as much as the closure of the seaway results in a more intense Atlantic thermohaline circulation, enhanced precipitation over Greenland and North America, and ultimately larger ice sheets. However, the volume difference between the ice sheets in the ''closed'' and ''open'' configurations is small, equivalent to about 5 cm of sea level. We conclude that although the closure of the Panama Seaway may have slightly enhanced or advanced the onset of NHG, it was not a major forcing mechanism. Future work must fully couple the ice sheet model and GCM, and investigate the role of orbital and CO 2 effects in controlling NHG.

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“…However, there are two major problems with explaining the stable isotope variations in terms of a reduction in Fe-limiting conditions and Fe enriched waters after 2.73 Ma: first, opal productivity should have increased with Fe availability rather than decreased, as observed; second, stratification and evolution toward the modern North Pacific implies enhanced Fe depletion as observed today rather than the relief of Fe stress required to explain the stable isotope variations. We thus rule out potential effects of Fe fertilization as a cause for the observed negative correlation between N and Si stable isotope variations, despite the fact that dust input (and accompanying Fe supply) increased markedly in the late Pliocene, though significantly earlier than 2.73 Ma [Rea et al, 1998]. …”

Section: Potential Difficulties In the Si Isotope Recordmentioning

confidence: 99%

Evidence for a major change in silicon cycling in the subarctic North Pacific at 2.73 Ma

Reynolds

Halliday

2008

Paleoceanography

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[1] The initiation of Northern Hemisphere glaciation in the subarctic North Pacific at $2.73 Ma was marked by an abrupt cessation of high opaline accumulation, considered to result from an increased stratification of the water column that should have led to higher utilization of nutrients in the surface ocean. We present a new stable Si isotope-based record of Si utilization that is hard to reconcile with this model. A drop in 30 Si/ 28 Si by 0.4% at 2.73 Ma is coincident with an increase in bulk N isotope composition. The contrasting utilization records cannot have been both caused by a hydrographic change alone. Excluding a change in the Si:N export ratio, these results either imply a relative increase in silicic acid supplied to the surface waters or a change in its Si isotope composition. While it is impossible to distinguish between these two possibilities, both imply a regional or global change in the Si biogeochemical cycle, potentially caused by an enhanced storage of Si in the underlying deep waters of the Pacific.

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Late Cenozoic Eolian deposition in the North Pacific: Asian drying, Tibetan uplift, and cooling of the northern hemisphere

Cited by 571 publications

References 66 publications

Influence of the Tibetan Plateau uplift on the Asian monsoon-arid environment evolution

Influence of the Tibetan Plateau uplift on the Asian monsoon-arid environment evolution

Closure of the Panama Seaway during the Pliocene: implications for climate and Northern Hemisphere glaciation

Evidence for a major change in silicon cycling in the subarctic North Pacific at 2.73 Ma

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