Preface to the second edition

Bradley, Ray

doi:10.1016/s0074-6142(99)80001-1

Cited by 71 publications

(84 citation statements)

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“…Widespread cooling starting in the mid-Holocene lead to widespread advances in southern Alaska by about 3500 BP followed by distinct idiosyncrasies in the subsequent marginal response of land-based versus tidewater glacial systems. The so-called Little Ice Age is recorded as three distinct periods of glacial advance consistent with complex records for this asynchronous series of events from other parts of the world (Grove, 1988;Thompson, 1992;Bradley, 1999).…”

Section: Lateglacial/holocene Paleogeography and Climatesupporting

confidence: 62%

New perspectives on Beringian Quaternary paleogeography, stratigraphy, and glacial history

Brigham‐Grette

2001

Quaternary Science Reviews

115

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Aspects of the paleogeography, stratigraphy, and glacial history of Beringia have been greatly revised over the past 15}20 yr. Access to North East Russia, in particular, has provided the opportunity to evaluate the Beringia landscape as a contiguous subcontinent during the Quaternary. For the "rst time, new research has made clearer the connection between tectonic forces and the submergence of the Bering Strait during the middle Pliocene. Revisions in the regional stratigraphy of glacial and interglacial deposits in northwest Alaska and northeast Russia provide a new foundation for assessing the causes for di!erences in glacial ice extent through time. The consensus of all "eld workers veri"es that glacial ice throughout most of Beringia was of very limited extent during the last glacial maximum. The onset of regional glaciation during the waning stages of the last interglaciation is clearly out of phase with glaciation at lower latitudes. Despite the lack of much glacial activity during the early Holocene, Alaska contains a rich record of late Holocene glacial response to Neoglacial cooling. Changes in the Holocene environment of Beringia likely had a profound a!ect on early inhabitants. The curiosity-driven vision and spirit of both David Hopkins and the late Troy Pewe have had a profound in#uence on Arctic paleoenvironmental research.

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Section: Lateglacial/holocene Paleogeography and Climatesupporting

confidence: 62%

New perspectives on Beringian Quaternary paleogeography, stratigraphy, and glacial history

Brigham‐Grette

2001

Quaternary Science Reviews

115

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“…Our knowledge of climate evolution is derived from the analysis of biological and geological archives, such as tree rings (e.g., Lieubeau et al, 2007), ice cores (e.g., Lambert et al, 2012), marine and lacustrine sediments (e.g., Bradley, 1999). Peatlands (i.e., soils accumulating partially decomposed plant remains with above 50% of organic matter and greater than 30 cm deep, Clymo, 1987) are continental archives of particular interest because they are easy to date, have a high temporal resolution (decadal) and contain multiple measurable parameters dependent on environmental conditions including temperature and/or humidity, atmospheric circulation and wind strength (e.g., Chambers et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

Fagel

Allan

Roux

et al. 2014

Geochimica et Cosmochimica Acta

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, et al.. Deciphering human-climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500 years (Misten bog, Belgium). Geochimica et Cosmochimica Acta, Elsevier, 2014Elsevier, , vol. 135, pp. 288-306. 10.1016Elsevier, /j.gca.2014 To cite this Fagel, Nathalie and Allan, Mohammed and Le Roux, Gaël and Mattielli, Nadine and Piotrowska, Natalia and Sikorski, Jaroslaw AbstractA high-resolution peat record from Eastern Belgium reveals the chronology of dust deposition for the last 2500 years. REE and lithogenic elements in addition to Nd and Pb isotopes were measured in a 173 cm age-dated peat profile and provide a continuous chronology of dust source and intensity. Calculated dust flux show pronounced increases c. 300 BC, 600 AD, 1000 AD, 1200 AD and from 1700 AD, corresponding to local and regional human activities combined with climate change.The Industrial Revolution samples (1700-1950 AD) are characterised by a significant enrichment in Sc-normalised REE abundance (sum REE/Sc > 25) due to intensive coal combustion. For the pre-Industrial Revolution samples, the Sc-normalised REE abundance (10 < Sum REE/Sc < 25) and the eNd variability (À13 to À9) are interpreted by a mixing between dust particles from local soils and long-range transport of desert particles. Three periods characterised by dominant-distal sources (c. 320 AD, 1000 AD and 1700 AD) are consistent with local wetter-than-average intervals as indicated by a lower degree of peat humification. Local erosion prevails during the drier (higher humification) intervals (100 AD, 600 AD). On a global scale, more distal supplies are driven during colder periods, in particular during the Oort and Maunder minima, suggesting a potential link between dust deposition and global climate. Combining REE abundance, fractionation between Light REE and Heavy REE and Nd isotope data in ombrotrophic peat allows one to distinguish between dust flux changes related to human and climate forcings.

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“…Barber et al (1994) then showed how plant macrofossil analysis could be used to provide a semi-quantiative record of past climate variability. Though omitted as a climate archive from the Bradley (1999) compendium, studies on bogs in north-west and west-central Europe have gained greater prominence during the last decade (Chambers and Charman, 2004;. A wide array of climate proxies has been developed, involving an increasing number of specialists from a range of disciplines (de Jong et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Development and refinement of proxy-climate indicators from peats

Chambers

Booth

Vleeschouwer

et al. 2012

Quaternary International

159

104

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 11364 The Netherlands a b s t r a c t Peat, especially from acidic mires (bogs), is a natural archive of past environmental change. Reconstructions of past climate from bogs commenced in the 19th Century through examination of visible peat stratigraphy, and later formed the basis for a postglacial climatic scheme widely used in Northwest Europe. Nevertheless, misconceptions as to how bogs grow led to a 50-year lacuna in peat-climate study, before the concept of 'cyclic regeneration' in bogs was refuted. In recent decades, research using proxyclimate indicators from bogs has burgeoned. A range of proxies for past hydrological change has been developed, as well as use of pollen, bog oaks and pines and other data to reconstruct past temperatures. Most of this proxy-climate research has been carried out in Northern Europe, but peat-based research in parts of Asia and North America has increased, particularly during the last decade, while research has also been conducted in Australia, New Zealand and South America. This paper reviews developments in proxy-climate reconstructions from peatlands; chronicles use of a range of palaeo-proxies such as visible peat stratigraphy, plant macrofossils, peat humification, testate amoebae and non-pollen palynomorphs; and explains the use of wiggle-match radiocarbon dating and relationship to climate shifts. It details other techniques being used increasingly, such as biomarkers, stable-isotopes, inorganic geochemistry and estimation of dust flux; and points to new proxies under development. Although explicit protocols have been developed recently for research on ombrotrophic mires, it must be recognised that not all proxies and techniques have universal applicability, owing to differences in species assemblages, mire formation, topographic controls, and geochemical characteristics.

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Preface to the second edition

Cited by 71 publications

References 0 publications

New perspectives on Beringian Quaternary paleogeography, stratigraphy, and glacial history

New perspectives on Beringian Quaternary paleogeography, stratigraphy, and glacial history

Deciphering human–climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500years (Misten bog, Belgium)

Development and refinement of proxy-climate indicators from peats

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