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Showing 1 to 20 of 35 for “"Middle Pleistocene"”.
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Ecology and climates of early Middle Pleistocene interglacials in Britain
… ecological and climatic characteristics of early Middle Pleistocene (MIS 19-13, c. 780-430 ka) interglacial environments in Britain. This period is characterised by globally muted (i.e. low amplitude) glacial-interglacial cycles, which increased in amplitude c. 430 ka with the Mid-Brunhes …
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Hominin technological behavior during the later middle Pleistocene in the Gademotta formation, main Ethiopian rift
Includes abstract. Includes bibliographical references.
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The taxonomy and taphonomy in mio-pliocene and late middle pleistocene micromammals from the Cape west coast, South Africa
… sites on the west coast dating to the Terminal Pleistocene and Holocene. The older of the two sites is 'E' Quarry at Langebaanweg. a disused phosphate mine, which is the only site in the western Cape Province representing the Mio-Pliocene, a slice of time when modem micromammal genera were …
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Western Pacific paleoceanography across the Early–Middle Pleistocene boundary (~773 ka, Marine Isotope Stage 19): Dinoflagellate cysts of the Chiba composite section, Japan.
… Stratotype Section and Point for the Early–Middle Pleistocene Subseries boundary. This well-exposed, continuous and expanded marine silty sedimentary succession has a detailed paleomagnetic record and an ultra-high-resolution oxygen isotope stratigraphy supported by U-Pb zircon dating of the …
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Sedimentology of a Lower Middle Pleistocene Reservoir in Garden Banks Area, Northern Gulf of Mexico: Integration of 3D Seismic, Cores, and Well Logs
… field 236, known as Pimento, is part of a lower middle Pleistocene submarine-fan deposit in the north central Gulf of Mexico. Pimento field represents a classic example of a prograding fan across the continental shelf continuing across the continental slope filling and spilling minibasins. …
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The glacial and periglacial history of a Middle Pleistocene ice-margin of the British Ice Sheet (BIS) in north Buckinghamshire, England and its influence on geotechnical variability
… and laboratory techniques to investigate the Middle Pleistocene history of part of north Buckinghamshire and its potential influence on geotechnical variability of till and Oxford Clay mudrocks. The project area was chosen because of its position relative to the proposed route of Great …
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Central North Atlantic (IODP Site U1313) paleoceanography based on a high-resolution dinoflagellate cyst record across the Early–Middle Pleistocene boundary (Marine Isotope Stages 20–18, ~810–741 ka)
… Isotope Stage (MIS) 19, which spans the Lower–Middle Pleistocene boundary. A published ultra-high-resolution δ18O record constrains the study. The following paleoenvironmental indicators were among those used: Operculodinium centrocarpum sensu Wall & Dale (North Atlantic Current [NAC]), …
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Insular adaptations in the appendicular skeleton of Sicilian and Maltese dwarf elephants
This thesis investigates the evolution of Pleistocene insular proboscideans from the centralwestern Mediterranean (Palaeoloxodon species from Sicily, Malta, Favignana) and a mammoth (Mammuthus lamarmorai) from Sardinia, with a particular emphasis on the anatomy of the limbs. Differences in the …
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Ecomorphological and Ecometric Approaches to Clarifying Homo sapiens Palaeoecology
… lie somewhere in Africa during the late-Early to Middle Pleistocene period (~1,000,000-500,000 years ago). The morphological diversity of hominin fossils, the patterns seen in technological and cultural evolution, and the signals of genetic exchanges from this time period are puzzling and are yet …
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Early human adaptation in the northern hemisphere and the analytic implications of taphonomy
… open-air sites dating to the Lower and Middle Pleistocene. The presumed causal association between lithic tools and faunal remains at these early sites is evaluated, as is the presumed primary or nearly undisturbed context of these deposits. As well, a methodological approach …
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Oxygen isotopes in diatom silica : a new understanding of silica-water oxygen isotope fractionation in diatom frustules and an application of diatom d180 values as a record of paleohydrologic variability in a middle-Pleistocene lacrustine core from the Valles Caldera, New Mexico
… I present d18O values of diatom silica from a middle-Pleistocene lacustrine core (VC-3) from the Valles Caldera, northern New Mexico, which record considerable (>25°) variability in lake water d18O values during interglacial Marine Isotope Stage 11 (MIS 11) and glacial MIS 12. There is a strong …
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Tectonic Exhumation and Climate Driven Erosion in Extensional Mountain Blocks: Two Examples from California, USA
… flux have varied by a factor of ~2x since the middle Pleistocene. I conclude high frequency variability is driven by climate change, and not tectonic perturbations, as supported by published constraints for exhumation timing. The middle Pleistocene transition from 40–100 ka periodicity may …
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Geologic Mapping in the Black Mountain Area, Northern Eastern California Shear Zone: Testing a Kinematic and Geometric Fault Slip Transfer Model
… (3.53 ± 0.06 to 3.29 ± 0.02 Ma), and early-middle Pleistocene (1936 ± 12.7 to 766 ± 3.1 ka) rocks. Palinspastically restored cross-sections show that offset Pliocene markers record 1.5 +0.7/-0.6 km of ~ENE-WSW extension since ~3.29 Ma, indicating an extension rate of ≥0.5 ± 0.2 mm/yr. We …
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Microbial phylogenetic diversity preserved in facies-specific modern, recent, Holocene and Pleistocene hot-spring travertine deposits of Yellowstone and Turkey
… directly compared with analogous Holocene-Late Pleistocene PSF travertine at Gardiner, Montana, and Middle Pleistocene PSF travertine in Denizli, Turkey. Analyses have included: (1) Modern microbial communities inhabiting the PSF of an actively depositing travertine hot-spring system (water, …
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Cosmogenic dating of fluvial terraces in the Sorbas Basin, SE Spain
… method offer a viable way to date Early and Middle Pleistocene terrace deposits. Combined exposure and burial age’s approaches using paired isotopes allow for insights into terrace aggradation and fluvial incision timing. The fluvial deposits in the Sorbas Basin record 1.0 Ma of incision by …
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Deciphering climatic controls on sedimentation in a tectonically active area, Cyprus
… of the Northern Hemisphere Ice Sheets and the Middle Pleistocene Transition. Despite the globally significant climatic events during the period of deposition, the Plio-Pleistocene climatic record in Cyprus is largely unknown and for the most part ignored. The objective of this study was …
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The Pleistocene History of the Birmingham District
… of England contains a complex sequence of Middle to Late Pleistocene sediments attributed to at least three lowland glaciations (Anglian, Wolstonian, and Devensian) as well as a variety of non-glacial sediments. Understanding the age of the Pleistocene glacial deposits is critical to …
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The use of faunal evidence to reconstruct site history and Hoedjiespunt 1 (HDP1), Western Cape
Hoedjiespunt 1 (HDP 1 ), is one of few later Middle Pleistocene to earlier Late Pleistocene African sites to yield well provenanced MSA hominid fossils, lending special significance to this site. The vertebrate fauna from this location, which consists of a palaeontological and an archaeological …
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