Late Holocene glacial and periglacial evolution in the upper Orco Valley, northwestern Italian Alps
Abstract: The sediments present in some areas of the Orco Valley provide indications on climatic variations that occurred during the last 6000 years on the southern slopes of the Alps. In particular, distribution and ages of peat layers help define periods and extent of glacial fluctuation in the la...
| Publicado en: | Quaternary Research Vol. 71; no. 1; pp. 1 - 9 |
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| Formato: | Artículo |
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Cambridge University Press
Jan2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=35817220&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 35817220 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00335894 2AW jtl: Quaternary Research issn: 00335894 maglogo: N pubinfo: dt: Jan2009 vid: 71 iid: 1 pid: 15979 pub: Cambridge University Press artinfo: ui: 35817220 10.1016/j.yqres.2008.08.004 ppf: 1 ppct: 8 formats: tig: atl: Late Holocene glacial and periglacial evolution in the upper Orco Valley, northwestern Italian Alps aug: au: Giraudi, Carlo affil: ENEA C.R. Casaccia, S.P. Anguillarese 301, 00123 Santa Maria di Galeria (Roma) — Italy su: Holocene stratigraphic geology Sediment control Orco River Valley (Italy) Italy sug: subj: Orco River Valley (Italy) Italy Holocene stratigraphic geology Sediment control keyword: Floods Glaciers Glaciofluvial Late Holocene NW Alps Palaeoclimate Peat and lake sediments Rock glaciers ab: Abstract: The sediments present in some areas of the Orco Valley provide indications on climatic variations that occurred during the last 6000 years on the southern slopes of the Alps. In particular, distribution and ages of peat layers help define periods and extent of glacial fluctuation in the last 2200 years. Sampling of soils involved in periglacial processes provided a basis for development of a chronological framework of late Holocene environmental change. The data indicate a trend toward cooler climate in the second half of the Holocene. A strong relationship exists between phases of River Po flooding and expansion/retreat phases of the Swiss glaciers: major glacial advances were coeval with periods of intense flooding of the River Po, whereas the phases of glacial retreat coincided with periods of little flooding of the Po. Only in three cases do relationships between glacier activity and floods show weak correlations; two of the cases relate to the warmest periods in approximately the last 2200 years, while the third is the present period. Paleoclimatic evidence from the study region indicates the relatively warm Roman Period between about 2200 and 1900 cal yr BP appears to better represent modern conditions than does the Medieval Warm Period. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2009 holdings: @attributes: islocal: N |
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