نتایج جستجو برای: late holocene
تعداد نتایج: 201114 فیلتر نتایج به سال:
Late Quaternary palaeoecological records of palm decline, extirpation and extinction are explored from the oceanic islands of the Pacific Ocean. Despite the severe reduction of faunal diversity coincidental with human colonisation of these previously uninhabited oceanic islands, relatively few plant extinctions have been recorded. At low taxonomic levels, recent faunal extinctions on oceanic is...
Many soils of the highlands of Serra do Mar, as in other mountain ranges, have thick histic horizons that preserve high amounts of carbon. However, the age and constitution of the organic matter of these soils remain doubtful, with possible late Pleistocene or Holocene ages. This study was conducted in three profiles (two in grassland and one in forest) in Serra da Igreja highlands in the state...
Relative sea-level (RSL) records from far-field regions distal ice sheets remain poorly understood, particularly in the early Holocene. Here, we extended Holocene RSL data Singapore by producing index points (SLIPs) and limiting dates a new ~40 m sediment core. We merged published to construct standardized database consisting of 88 SLIPs data. In Holocene, rose rapidly −21.0 −0.7 ~9500 7000 cal...
Mussel shells from central California coastal archaeological sites record changes in sea surface temperatures in the past 2000 years, Water temperatures, inferred from oxygen isotopes in the shells, were about 1°C cooler than present and stable between 2000 and 700 yr ago, Between about 700 and 500 yr ago, seasonal variation was greater than present, with extremes above and below historic level...
West Indian land mammals have suffered the most severe extinctions of any Holocene mammal faunas. However, 'last-occurrence' dates based on radiometric or robust stratigraphic data remain unavailable for most West Indian species, making it impossible to identify factors responsible for these extinctions. Here, we present new radiometric dates from archaeological and palaeontological sites on Pu...
Lake Woods is a large freshwater body on the northern edge of Australia’s arid zone where research since late 1960s has suggested Pleistocene, later Holocene, and recent human occupations....
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