Orbital forcing of continental climate during the Pleistocene: a complete astronomically tuned climatic record from Lake Baikal, SE Siberia

Prokopenko, Alexander A.; Hinnov, Linda A.; Williams, Douglas F.; Kuzmin, M. I.

doi:10.1016/j.quascirev.2006.10.002

Cited by 187 publications

(146 citation statements)

References 53 publications

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“…Sustained warmth through MIS 14 is in agreement with a range of global records, including in sea surface temperature (SST) estimates from the Iberian margin ( Fig. 8; Rodrigues et al, 2011) and South China Sea (Yu and Chen, 2011), BSi and magnetic susceptibility from Lake Baikal (Prokopenko et al, 2002(Prokopenko et al, , 2006, and several proxies from Antarctic ice cores (Jouzel et al, 2007;Masson-Delmotte et al, 2010). Although overall warmer conditions may have prevailed during MIS 14, the Ohrid record suggests that colder glacial-like conditions occurred between ca.…”

Section: Mis 16-13 (637-474 Ka)supporting

confidence: 81%

“…221 and 212 ka represents the lowermost values of the core, which suggests MIS 7c may have experienced warmer conditions than during the full interglacial (MIS 7e) and is supported by a higher TIC plateau (Francke et al, 2016). In addition, a greater diversity of AP is observed at Tenaghi Philippon alongside a greater abundance of thermophilous taxa (Tzedakis et al, 2003b) and higher BSi at Lake Baikal (Prokopenko et al, 2006). Although CO 2 and CH 4 concentrations were lower in MIS 7c (Loulergue et al, 2008;Lüthi et al, 2008), higher summer insolation during MIS 7c most likely promoted warmer climate conditions (Fig.…”

Section: Mis 7 (243-191 Ka)mentioning

confidence: 90%

“…This glacial-interglacial climate signal has been globally observed in deep marine sediments (Lisiecki and Raymo, 2005), ice cores (Jouzel et al, 2007), and continental sequences (Sun and An, 2005), which, when compared, indicate a broad correspondence over orbital timescales (Tzedakis et al, 1997;Lang and Wolff, 2011). However, comprehensive terrestrial sequences covering multiple glacial-interglacial cycles are still rare (Prokopenko et al, 2006;Tzedakis et al, 2006), especially when isotope stratigraphies are considered, and consequently the 5045-1 record can provide valuable information on climate evolution over an extended time frame. Although it is beyond the scope of this paper to look in detail at each interglacial over the last 637 ka (MIS 15 to MIS 5), some preliminary observations can be made about their structure and consistency.…”

Section: Climate and Interglacial Variability At Lake Ohrid Over The mentioning

confidence: 94%

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Northern Mediterranean climate since the Middle Pleistocene: a 637 ka stable isotope record from Lake Ohrid (Albania/Macedonia)

et al. 2016

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Abstract. Lake Ohrid (Macedonia/Albania) is an ancient lake with unique biodiversity and a site of global significance for investigating the influence of climate, geological, and tectonic events on the generation of endemic populations. Here, we present oxygen (δ 18 O) and carbon (δ 13 C) isotope data from carbonate over the upper 243 m of a composite core profile recovered as part of the Scientific Collaboration on Past Speciation Conditions in Lake Ohrid (SCOP-SCO) project. The investigated sediment succession covers the past ca. 637 ka. Previous studies on short cores from the lake (up to 15 m, < 140 ka) have indicated the total inorganic carbon (TIC) content of sediments to be highly sensitive to climate change over the last glacial-interglacial cycle. Sediments corresponding to warmer periods contain abundant endogenic calcite; however, an overall low TIC content in glacial sediments is punctuated by discrete bands of early diagenetic authigenic siderite. Isotope measurements on endogenic calcite (δ 18 O c and δ 13 C c ) reveal variations both between and within interglacials that suggest the lake has been subject to palaeoenvironmental change on orbital and millennial timescales. We also measured isotope ratios from authigenic siderite (δ 18 O s and δ 13 C s ) and, with the oxygen isotope composition of calcite and siderite, reconstruct δ 18 O of lake water (δ 18 O lw ) over the last 637 ka. Interglacials have higher δ 18 O lw values when compared to glacial periods most likely due to changes in evaporation, summer temperature, the proportion of winter precipitation (snowfall), and inflow from adjacent Lake Prespa. The isotope stratigraphy suggests Lake Ohrid experienced a period of general stability from marine isotope stage (MIS) 15 to MIS 13, highlighting MIS 14 as a particularly warm glacial. Climate conditions became progressively wetter during MIS 11 and MIS 9. Interglacial periods after MIS 9 are characterised by increasingly evaporated and drier conditions through MIS 7, MIS 5, and the Holocene. Our results provide new evidence for long-term climate change in the northern Mediterranean region, which will form the basis to better understand the influence of major environmental events on biological evolution within Lake Ohrid.

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Section: Mis 16-13 (637-474 Ka)supporting

confidence: 81%

Section: Mis 7 (243-191 Ka)mentioning

confidence: 90%

Section: Climate and Interglacial Variability At Lake Ohrid Over The mentioning

confidence: 94%

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Northern Mediterranean climate since the Middle Pleistocene: a 637 ka stable isotope record from Lake Ohrid (Albania/Macedonia)

et al. 2016

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“…In lacustrine sediment cores, BSi content can range from the detection limit (0.01 wt %) to > 70 wt % SiO 2 (Frings et al, 2014a). The downcore variations in BSi through time vary from as little as 2 wt % SiO 2 (Adams and Finkelstein, 2010;Ampel et al, 2008) to a high of 10-40 wt % SiO 2 (Johnson et al, 2011;Prokopenko et al, 2006;Van der Putten et al, 2015) and depends on several interacting factors such as mineral matter or organic matter accumulation, diatom productivity and preservation/dissolution processes. Hence, these processes control the relative effect that tephra constituents (< 3 wt % SiO 2 , Fig.…”

Section: Implications For Palaeoecological Studiesmentioning

confidence: 99%

“…Hence, the magnitude of BSi accumulation in soils is a key component in the biological buffering capacity of the Si cycle in an ecosystem. Palaeoecologists use BSi as a proxy for diatom productivity, and apply this to infer changes in, for example, nutrient availability (Conley et al, 1993;Heathcote et al, 2014), hydrology (Andresen et al, 2004), atmospheric circulation (Harper et al, 1986;Johnson et al, 2011;Verschuren et al, 2002) and temperature (Adams and Finkelstein, 2010;Prokopenko et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The contribution of tephra constituents during biogenic silica determination: implications for soil and palaeoecological studies

et al. 2015

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Abstract. Biogenic silica (BSi) is used as a proxy by soil scientists to identify biological effects on the Si cycle and by palaeoecologists to study environmental changes. Alkaline extractions are typically used to measure BSi in both terrestrial and aquatic environments. The dissolution properties of volcanic glass in tephra deposits and their nanocrystalline weathering products are hypothesized to overlap those of BSi; however, data to support this behaviour are lacking. The potential that Si-bearing fractions dissolve in alkaline media (Si Alk ) that do not necessarily correspond to BSi brings the applicability of BSi as a proxy into question. Here, analysis of 15 samples reported as tephra-containing allows us to reject the hypothesis that tephra constituents produce an identical dissolution signal to that of BSi during alkaline extraction. We found that dissolution of volcanic glass shards is incomplete during alkaline dissolution. Simultaneous measurement of Al and Si used here during alkaline dissolution provides an important parameter to enable us to separate glass shard dissolution from dissolution of BSi and other Si-bearing fractions. The contribution from volcanic glass shards (between 0.2 and 4 wt % SiO 2 ), the main constituent of distal tephra, during alkaline dissolution can be substantial depending on the total Si Alk . Hence, soils and lake sediments with low BSi concentrations are highly sensitive to the additional dissolution from tephra constituents and its weathering products. We advise evaluation of the potential for volcanic or other non-biogenic contributions for all types of studies using BSi as an environmental proxy.

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Response of the high‐resolution Chinese loess grain size record to the 50°N integrated winter insolation during the last 500,000 years

Chen

Liu

Kravchinsky

2014

Geophysical Research Letters

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The global ice volume change regulates the Earth's climate and has been characterized by 100,000 year cycles over the last 700,000 years. The Asian inland winter climate change is proposed to show primary 100,000 year cycles that mimic ice volume changes. Here we calibrate the age of a high-resolution grain size record over the last 500,000 years with a grain size age model. The results show a primary 41,000 year cycle and a weaker 100,000 year cycle during the last~500,000 years. We suggest that the primary 41,000 year cycle in the grain size record can be ascribed to the 50°N integrated winter insolation. Our findings suggest that ice volume changes have a limited effect on the Asian inland winter climate. Asian continental winter climate changes respond to the 50°N integrated winter insolation in addition to ice volume changes.

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Orbital forcing of continental climate during the Pleistocene: a complete astronomically tuned climatic record from Lake Baikal, SE Siberia

Cited by 187 publications

References 53 publications

Northern Mediterranean climate since the Middle Pleistocene: a 637 ka stable isotope record from Lake Ohrid (Albania/Macedonia)

Northern Mediterranean climate since the Middle Pleistocene: a 637 ka stable isotope record from Lake Ohrid (Albania/Macedonia)

The contribution of tephra constituents during biogenic silica determination: implications for soil and palaeoecological studies

Response of the high‐resolution Chinese loess grain size record to the 50°N integrated winter insolation during the last 500,000 years

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