The Quaternary Period

Gibbard, P.L.; Head, Martin J.

doi:10.1016/b978-0-12-824360-2.00030-9

Cited by 25 publications

(11 citation statements)

References 191 publications

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“…Jiang et al, 2019;Yao et al, 2021), and the relatively homogenous sedimentary properties indicate the absence of significant hiatuses within each depositional sequence. Therefore, we correlated the magnetozones to the geomagnetic polarity timescale (GPTS; Gibbard & Head, 2020), from chrons C1n to C2An (Figure 3). For example, in core D51, the upper and the lower normal magnetozones can be correlated to the Brunhes chron (C1n), and the Olduvia chron (C2n), respectively; the middle normal magnetozone is correlated to the Jaramillo normal subchron (C1r.1n) within the Matuyama chron; and the reversed magnetozones correlate to the successive reversed polarity intervals of the intervening Matuyama chron, respectively.…”

Section: Rock Magnetic and Paleomagnetic Resultsmentioning

confidence: 99%

Magnetostratigraphy of Abyssal Deposits in the Central Philippine Sea and Regional Sedimentary Dynamics During the Quaternary

Long

Zhao

et al. 2022

Paleoceanog and Paleoclimatol

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The Philippine Sea is a well-preserved, relict, marginal basin (Figure 1), which was formed principally by seafloor spreading during the Paleogene, with the former spreading axis along the Central Ridge Fujioka et al., 1999;Louden, 1976;Uyeda & Ben-Avraham, 1972). The water depth rage of the Philippine Sea (∼5,500-6,000 m), is generally below the carbonate compensation depth (CCD). Magnetic anomalies in the Philippine Sea were identified based on total-force anomalies (Louden, 1976;Mrozowski et al., 1982),

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Section: Rock Magnetic and Paleomagnetic Resultsmentioning

confidence: 99%

Magnetostratigraphy of Abyssal Deposits in the Central Philippine Sea and Regional Sedimentary Dynamics During the Quaternary

Long

Zhao

et al. 2022

Paleoceanog and Paleoclimatol

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“…3). An age model for MLM8 in cal years BP was constructed using a combination of radiocarbon dates and a lithological marker for the start of the Holocene, for which a radiocarbon age of 10 000 a BP was adopted (Gibbard et al, 2020). Nine radiocarbon dates were obtained from core MLM8 of which seven were used in the age-depth model for the core (Table 1) (Fig.…”

Section: Lake-sediment Chronologymentioning

confidence: 99%

Climate and atmospheric circulation during the Early and Mid‐Holocene inferred from lake‐carbonate oxygen‐isotope records from western Ireland

Holmes,

Tindall,

Jones

et al. 2023

J Quaternary Science

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The Early to Mid‐Holocene experienced marked climate change over the northern hemisphere mid‐latitudes in response to changing insolation and declining ice volume. Oxygen isotopes from lake sediments provide a valuable climate proxy, encoding information regarding temperature, hydroclimate and moisture source. We present oxygen‐isotope records from two lakes in western Ireland that are strongly influenced by the North Atlantic. Excellent replication between the records suggests they reflect regional, not local, influences. Carbonate oxygen‐isotope values peaked at the start of the Holocene, between 11.2 and 11.1 cal ka bp, and then decreased markedly until 6 cal ka bp at both sites. Palaeoecological evidence supports only modest change in temperature or hydroclimate during this interval and we therefore explain the decrease primarily by a reduction in the oxygen‐isotope composition of precipitation (δ18Oppt). We show a similar decrease in δ18O values in a forward model of carbonate isotopes between 12–11 and 6–5 cal ka bp. However, the inferred reduction in δ18Oppt between the Early and Mid‐Holocene in the model is mainly linked to a decrease in the δ18O of the ocean source water from ice sheet melting whereas the lake carbonate isotope records are more consistent with changes in the transport pathway of moisture associated with atmospheric circulation change as the dominant cause.

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“…These phenomena, mediated by ecological interactions, shaped the evolution of the biota. In turn, the fossil record is key for reconstructing these changes, understanding their pace and magnitude, and comparing and correlating them between different areas [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

The Occurrence of Suids in the Post-Olduvai to Pre-Jaramillo Pleistocene of Europe and Implications for Late Villafranchian Biochronology and Faunal Dynamics

Iannucci

2024

Quaternary

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It has been proposed that suids were absent from Europe during the post-Olduvai to pre-Jaramillo Early Pleistocene (from less than 1.8 to more than 1.2 Ma) and that their “re-appearance” in the late Early Pleistocene would mark the end of the late Villafranchian and the beginning of the Epivillafranchian. Arguments enumerated in favor of this “suid gap” are the lack of suid remains from extensively sampled fossil localities of this age and the high reproductive potential (r-strategy) of suids, which would translate in a high commonness of their remains in the fossil record. However, here it shown that while suids’ reproductive potential is certainly exceptional within artiodactyls, there is no direct relationship between the reproductive strategy and preservation rate of a taxon in the fossil record. In Early Pleistocene localities of Europe and adjoining areas, where suids are present in a fossil assemblage, they are always rare. In terms of number of occurrences (frequency), suids range from being moderately common (~2.0–1.8 Ma) to moderately rare (~1.1–1.0 Ma). Suid material is also described herein from Peyrolles (Issoire, France; reference locality for MNQ 19), a site dated at 1.47 Ma, providing direct evidence for the presence of suids within the purported “suid gap”. The case of suids underlines an important source of caveat in inferring faunal dynamics of the late Early Pleistocene of western Europe—including the dispersal of hominins—i.e., the unequal geographical distribution of the paleontological sites of post-Olduvai to pre-Jaramillo age. Indeed, Peyrolles is the only large mammal site in western Europe located outside the Iberian and Italian Peninsulas reliably dated around 1.5 Ma. In the post-Olduvai to pre-Jaramillo period, there is a paucity of radiometric estimates (or they have too coarse a resolution) and of paleomagnetic excursions detectable in continental deposits. Basically, for this time span, there is a high dependence on biochronological correlations, although, at the same time, these correlations are less reliable—because these are based on a few sites not covering the entire spectrum of environments present in Europe and the sites are not independently dated with methods that outperform biochronology—than those for other periods.

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The Quaternary Period

Cited by 25 publications

References 191 publications

Magnetostratigraphy of Abyssal Deposits in the Central Philippine Sea and Regional Sedimentary Dynamics During the Quaternary

Magnetostratigraphy of Abyssal Deposits in the Central Philippine Sea and Regional Sedimentary Dynamics During the Quaternary

Climate and atmospheric circulation during the Early and Mid‐Holocene inferred from lake‐carbonate oxygen‐isotope records from western Ireland

The Occurrence of Suids in the Post-Olduvai to Pre-Jaramillo Pleistocene of Europe and Implications for Late Villafranchian Biochronology and Faunal Dynamics

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