The deglaciation of Maine, U.S.A.

Borns, Harold W.; Doner, Lisa A.; Dorion, Christopher C.; Jacobson, George L.; Kaplan, Michael R.; Kreutz, K. J.; Lowell, Thomas V.; Thompson, Woodrow B; Weddle, Thomas K

doi:10.1016/s1571-0866(04)80190-8

Cited by 31 publications

(58 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Radiocarbon dates indicate that the pond was deglaciated during the late Allerö d interstade, and plant macrofossils in the basal unit imply that a shrub-tundra environment persisted for much of the Lateglacial period in the region. We infer from these results that the northern Maine ice cap identified and discussed by Lowell (1985), Kite and Stuckenrath (1986), Lowell and Kite (1986), Lowell et al (1990), Newman et al (1985, Borns et al (2004), Pelletier and Robinson (2005) and Nurse et al (2006) must have withdrawn from the DLER before the late Allerød, with no evidence for Younger Dryas reoccupation (YD; 11 000-10 000 14 C a BP; Mangerud et al, 1974). This is consistent with the deglaciation isochrones of Borns et al (2004) from central northern Maine, and with findings from the White Mountains and Mt Katahdin indicating pre-YD deglaciation (Davis, 1989(Davis, , 1999.…”

Section: Galilee Pond Sediment Core: Results and Implicationssupporting

confidence: 55%

“…Borns et al, 2004;Dieffenbacher-Krall and Nurse, 2006). In this case, we collected plant macrofossils from within the mostly inorganic basal sediments, providing a closer minimum age for when the pond became free of overlying glacial ice.…”

Section: Galilee Pond Sediment Core: Results and Implicationsmentioning

confidence: 99%

“…Cryoturbation and aeolian processes also may have augmented sediment supplied to Galilee Pond during the Lateglacial period (Mott and Stea, 1993). Meltwater from the small GalRG could have contributed to the minerogenic basal sediments in the pond; however, this explanation cannot account for the widespread occurrence of similar basal sediments in lakes throughout northern Maine (i.e., Borns et al, 2004;Dieffenbacher-Krall and Nurse, 2006).…”

Section: Galilee Pond Sediment Core: Results and Implicationsmentioning

confidence: 99%

“…Levesque et al, 1993Levesque et al, , 1997Stea and Mott, 1998;Borns et al, 2004;Dieffenbacher-Krall and Nurse, 2006), in addition to more distant ice core analyses from Greenland (e.g. Alley, 2000), show that the Lateglacial period was punctuated by the most recent severe cold events to occur in the North Atlantic region: the Killarney Oscillation (KO; 11 200-10 900 14 C a BP; Levesque et al, 1993) and the YD cold period (Levesque et al, 1993(Levesque et al, , 1997Borns et al, 2004). In New England, proxy records of postglacial climate show that the KO/ YD oscillations bear the most outstanding signature of Lateglacial cooling (Borns et al, 2004), which is in accord with our stratigraphic and LOI record from Galilee Pond.…”

Section: Palaeoclimate Implicationsmentioning

confidence: 99%

See 3 more Smart Citations

Inactive and relict rock glaciers of the Deboullie Lakes Ecological Reserve, northern Maine, USA

Putnam

2009

J Quaternary Science

View full text Add to dashboard Cite

Lobate talus slopes in the Deboullie Lakes Ecological Reserve (DLER) of northern Maine exhibit parabolic profiles characteristic of inactive and relict talus-derived rock glaciers. Vegetated rock glacier surfaces suggest that the landforms are no longer active, and lobes comprising two DLER rock glaciers document periods of past growth. Observations of perennial subsurface ice are supported by datalogger temperature measurements, indicating that sporadic permafrost exists throughout the DLER. We compare the DLER rock glaciers, along with similar features elsewhere in New England and adjacent Québec, to the modern alpine permafrost distribution. Results indicate that a mean annual temperature cooling of $68C is required to promote active rock glacier growth. Ages of plant remains recovered from the basal sediments of a local pond constrain deglaciation to before 11 320 14 C a BP, and core stratigraphy and organic content reveal that a periglacial environment persisted during the early postglacial era. Thus, we hypothesise that the DLER rock glaciers were active during Lateglacial time despite the lack of glacier activity in the region. We take this to suggest that north-eastern US rock glaciers formed in response to mean annual temperatures skewed towards the frigid winters of the Younger Dryas chronozone.

show abstract

Section: Galilee Pond Sediment Core: Results and Implicationssupporting

confidence: 55%

Section: Galilee Pond Sediment Core: Results and Implicationsmentioning

confidence: 99%

Section: Galilee Pond Sediment Core: Results and Implicationsmentioning

confidence: 99%

Section: Palaeoclimate Implicationsmentioning

confidence: 99%

See 2 more Smart Citations

Inactive and relict rock glaciers of the Deboullie Lakes Ecological Reserve, northern Maine, USA

Putnam

2009

J Quaternary Science

View full text Add to dashboard Cite

show abstract

“…Indeed, perturbations of the ice sheet's maritime sectors have been invoked widely as a key component -if not the cause -of Heinrich events (e.g., Hulbe et al, 2004), during which considerable volumes of ice apparently were disgorged into the North Atlantic Ocean with profound consequences for downwind ocean circulation (Broecker, 2003). Concurrently, the temperate nature and relatively low latitude of the ice sheet mean the LIS itself will have been highly sensitive to climate, particularly along southern and eastern margins where deglacial readvances have been correlated with perturbations of North Atlantic circulation (e.g., Lowell et al, 1999;Dorion et al, 2001;Borns et al, 2004;Kaplan, 2007). Consequently, accurate reconstruction of past ice-sheet behavior provides the means to assess both the role of the LIS in Late Quaternary climate variability and sensitivity of the ice sheet to key events, such as Heinrich stadials and late-glacial climate reversals.…”

Section: Introductionmentioning

confidence: 99%

Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A.

et al. 2015

Self Cite

View full text Add to dashboard Cite

a b s t r a c tProminent moraines deposited by the Laurentide Ice Sheet in northern New England document readvances, or stillstands, of the ice margin during overall deglaciation. However, until now, the paucity of direct chronologies over much of the region has precluded meaningful assessment of the mechanisms that drove these events, or of the complex relationships between ice-sheet dynamics and climate. As a step towards addressing this problem, we present a cosmogenic 10 Be surface-exposure chronology from the Androscoggin moraine complex, located in the White Mountains of western Maine and northern New Hampshire, as well as four recalculated ages from the nearby Littleton-Bethlehem moraine. Seven internally consistent 10 Be ages from the Androscoggin terminal moraines indicate that advance culminated~13.2 ± 0.8 ka, in close agreement with the mean age of the neighboring Littleton-Bethlehem complex. Together, these two datasets indicate stabilization or advance of the ice-sheet margin in northern New England, at~14-13 ka, during the Allerød/Greenland Interstadial I.

show abstract

Remote detection of upland surface water storage capacity in deglaciated terrain

Van Dam,

Smith

2023

Earth Surf Processes Landf

View full text Add to dashboard Cite

A notable characteristic of terrain in non‐urbanized deglaciated areas of northeastern North America is the microtopography created by processes related to surficial geology, deglaciation and mechanical disturbances to surface materials from excavating events, most of which are caused by tree throw in the modern landscape. The features are often on the scale of 1–4 m across and decimetres to a metre in depth, appearing as ‘puddles’ during intense or high‐magnitude precipitation events. Generalized storage capacity values have been summarized in textbooks for varied landscape conditions, but surprisingly little information is available about how microtopography and related surface water storage varies in dominant physiographic settings in deglaciated landscapes defined by slope, surficial geology and land cover conditions. The increasing availability of elevation data at a horizontal resolution of 2 m or higher has made it possible to remotely evaluate differences in terrain elevation and quantify upland surface water storage capacity from relatively small topographic depressions. Here, we describe and quantify these topographic features in several coastal and inland watersheds in the state of Maine (USA) with measurements of depression volume calculated from digital elevation models (DEMs) using a pit filling approach. Results show that microtopographic storage capacity varies with slope and land cover conditions in deglaciated terrain of northeastern North America. Basin‐average surface water depression storage capacity estimates range from ~4 mm to as low as 0.2 mm. Human interventions such as clearing land for agriculture are associated with lower microtopographic surface water storage capacity than forested landscapes in the region.

show abstract

The deglaciation of Maine, U.S.A.

Cited by 31 publications

References 75 publications

Inactive and relict rock glaciers of the Deboullie Lakes Ecological Reserve, northern Maine, USA

Inactive and relict rock glaciers of the Deboullie Lakes Ecological Reserve, northern Maine, USA

Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A.

Remote detection of upland surface water storage capacity in deglaciated terrain

Contact Info

Product

Resources

About