Orbitally-paced climate evolution during the middle Miocene “Monterey” carbon-isotope excursion

Holbourn, Ann; Kuhnt, Wolfgang; Schulz, Michael; Flores, José-Abel; Andersen, Nils

doi:10.1016/j.epsl.2007.07.026

Cited by 305 publications

(381 citation statements)

References 36 publications

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“…We interpret the change from strong gradient to normal gradient (at about 15 Ma) and the onset of low absolute precipitation values as a result of the initiation of global cooling associated with obliquity modulation of climate (Holbourn et al, 2007). Continental proxy-data show no significant cooling at that time (Böhme et al, 2007), implying that surface temperature changes are beyond the resolution of the methods.…”

Section: Discussionmentioning

confidence: 97%

“…The Miocene Climatic Optimum was the warmest period during the Neogene (Zachos et al, 2001) with minimum ice-volume and eccentricity-paced climate until 14.7 Ma (Holbourn et al, 2007). According to numerical simulation of You et al (2009), the global annual mean surface temperature at around 15 Ma were about 3°C higher than today, and the meridional temperature gradient on the northern hemisphere was less pronounced than present.…”

Section: Discussionmentioning

confidence: 99%

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Miocene precipitation in Europe: Temporal trends and spatial gradients

Böhme

Winklhofer²,

Ilg

2011

Palaeogeography, Palaeoclimatology, Palaeoecology

129

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It is known from present-day climates that both temporal and spatial variations in precipitation can be more pronounced than those in temperature and thus influence ecosystems and human society in more substantial way. However, very little is known about such variations in the past. Here we present an analysis of 206 palaeoprecipitation data from two twelve million year long proxy records of precipitation for Southwest (Calatayud-Teruel basin) and Central Europe (Western and Central Paratethys), spanning the late Early and Middle to Late Miocene (17.8-5.3 Ma) at a temporal resolution of about 80 kyr and 200 kyr, respectively. The estimates of precipitation are based on the ecophysiological structure of herpetological assemblages. The results show that precipitation variations in both regions have large amplitudes during the Miocene with comparable temporal trends at longer time scales. With locally 300 mm up to more than 1000 mm more rainfall per year than present, the early Langhian and the Tortonian were relatively wet periods, whereas the late Langhian and late Serravallian were relatively dry, with up to 300 to 500 mm less precipitation than present. The most humid time intervals were the early and middle Tortonian washhouse climate periods. Overall, our data suggest that the latitudinal precipitation gradient in Europe from the Middle to Late Miocene were highly variable, with a general tendency towards a reduced gradient relative to present day values. The gradient decreases during cooling periods and increases during warming periods, similar to results from simulations of future climate change. Interestingly, the precipitation gradient was reversed during the second washhouse climate period and the Early Messinian, which may have causes a negative hydrologic balance in the Eastern Paratethys during the latter time. Yet, our reconstructed gradient curve shows no direct correlation with the global temperature signal from oxygen isotopes, which implies a non-linear regional response. Our results further suggest that major fluctuations in the precipitation gradient can be responsible for shifts in ecosystem distribution, and particularly, for faunal turnover in South Western Europe.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Miocene precipitation in Europe: Temporal trends and spatial gradients

Böhme

Winklhofer²,

Ilg

2011

Palaeogeography, Palaeoclimatology, Palaeoecology

129

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“…at the end of biozone N9. Holbourn et al (2007) also found higher d 18 O val ues in the in ter val from 14.229 to 14.071 Ma. This is con sis tent with the Paratethys iso to pic re cord: the IIB biozone dis plays cooler condi tions com pared to the IIA in ter val.…”

mentioning

confidence: 76%

“…The cryp tic cool ing in ter val in the Paratethys (IIB biozone) is fol lowed by iso to pi cally recorded (Globigerina bulloides d 18 O) warm ing of the IIb biozone (Gonera, 2013). In the same sec tion, Holbourn et al (2007) dem on strated a warm ing re corded by d 18 O be tween 14.025 and 13.874 Ma, i.e. un til the end of the Langhian.…”

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confidence: 80%

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Coiling direction in Middle Miocene globorotaliids (Foraminiferida) – a case study in the Paratethys (Upper Silesia Basin, Poland)

Gonera

2018

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The pa per deals with sub-evaporite Badenian de pos its (Mid dle Mio cene, Paratethys) that dis play a sud den ap pear ance of globorotaliid taxa show ing pref er ences in the tax o nomic set and coil ing di rec tion. An in ter val of sinistrally coiled Jenkinsella mayeri with pro por tion ally coiled Globoconella bykovae is at the bot tom of the stud ied se quence. It is fol lowed by an in ter val of pro por tion ally coiled Jenkinsella transsylvanica. Pro por tion ally coiled Globoconella bykovae with a small num ber of propor tion ally coiled Jenkinsella transsylvanica are at the top of the Moravian (CPN 7) substage (Orbulina suturalis alias Lagenidae Zone). The sub-evaporite part of the Wielician (CPN 8) substage (Uvigerina costai alias Spiroplectammina Zone) be gan with a globorotaliid-bar ren in ter val (IIC biozone). It is fol lowed by biozone IID dis play ing three globorotallid peaks amongst globorotallid-bar ren de pos its. Only globoconellas are pres ent in all these three events. Pro por tion ally coiled Globoconella bykovae ap peared first. It is fol lowed by pro por tion ally coiled Globoconella minoritesta and sinistrally coiled Globoconella bykovae at the end of the biozone IID. Coil ing pref er ences of globorotaliids have been com pared to changes in the hy dro graphic re gime un fold ing dur ing the CPN 7 and CPN 8 in the stud ied area of the Paratethys. The study dis cov ers that the coil ing of globorotaliids re sponded se lec tively to the hy dro graphic changes. Globoconella bykovae is highly op por tunis tic and can tol er ate con sid er able tem per a ture changes. Spec i mens of this taxon per sist to coil pro por tion ally dur ing the sub-evaporite Badenian, ex cept for the shift to sinistral coil ing just prior to the Wielician evaporites. Sinistrally coiled Jenkinsella mayeri is the most sen si tive to hy dro graphic changes. This taxon re treated at the on set of the tem per a ture drop dur ing the mid-Moravian cryp tic cool ing. This cool ing is marked by the new jenkinsellid oc cur rence -pro por tion ally coiled Jenkinsella transsylvanica. Pro por tion ally coiled Globoconella minoritesta is pres ent in the mid dle of the IID globorotaliid peaks. The globorotaliid coil ing data, pre sented in this pa per, has been cal i brated to the global stra tig ra phy. The in te grated data (foraminifera, nannofossils, ox y gen and car bon sta ble iso topes, ra dio met ric mea sure ments) sup ports the view that the CPN 7/CPN 8 bound ary is co eval to the Langhian/Serravalian one. In the Pol ish part of the Carpathian Foredeep, the boundary runs within the Skawina For ma tion.

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Middle to late Miocene stepwise climate cooling: Evidence from a high-resolution deep water isotope curve spanning 8 million years

et al. 2013

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We present high‐resolution (2–3 kyr) benthic foraminiferal stable isotopes in a continuous, well‐preserved sedimentary archive from the West Pacific Ocean (Ocean Drilling Program Site 1146), which track climate evolution in unprecedented resolution over the period 12.9 to 8.4 Ma. We developed an astronomically tuned chronology over this interval and integrated our new records with published isotope data from the same location to reconstruct long‐term climate and ocean circulation development between 16.4 and 8.4 Ma. This extended perspective reveals that the long eccentricity (400 kyr) cycle is prominently encoded in the δ13C signal over most of the record, reflecting long‐term fluctuations in the carbon cycle. The δ18O signal closely follows variations in short eccentricity (100 kyr) and obliquity (41 kyr). In particular, the obliquity cycle is prominent from ~14.6 to 14.1 Ma and from ~9.8 to 9.2 Ma, when high‐amplitude variability in obliquity is congruent with low‐amplitude variability in short eccentricity. The δ18O curve is additionally characterized by a series of incremental steps at ~14.6, 13.9, 13.1, 10.6, 9.9, and 9.0 Ma, which we attribute to progressive deep water cooling and/or glaciation episodes following the end of the Miocene climatic optimum. On the basis of δ18O amplitudes, we find that climate variability decreased substantially after ~13 Ma, except for a remarkable warming episode at ~10.8–10.7 Ma at peak insolation during eccentricity maxima (100 and 400 kyr). This transient warming, associated with a massive negative carbon isotope shift, is reminiscent of intense global warming events at eccentricity maxima during the Miocene climatic optimum.

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Orbitally-paced climate evolution during the middle Miocene “Monterey” carbon-isotope excursion

Cited by 305 publications

References 36 publications

Miocene precipitation in Europe: Temporal trends and spatial gradients

Miocene precipitation in Europe: Temporal trends and spatial gradients

Coiling direction in Middle Miocene globorotaliids (Foraminiferida) – a case study in the Paratethys (Upper Silesia Basin, Poland)

Middle to late Miocene stepwise climate cooling: Evidence from a high-resolution deep water isotope curve spanning 8 million years

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