Greg Balco
Dados Biográficos
| ID | 4129429 |
|---|---|
| NOME | Greg Balco |
| PRENOMES | Greg |
| SOBRENOME | Balco |
| ASSINATURA | BALCO G |
| AFILIAÇÕES | Berkeley Geochronology Center |
| VERIFICADO | Não |
| TOTAL DE OBRAS | 8 |
| TOTAL DE CITAÇÕES | 0 |
| TOTAL COMO AUTOR | 8 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1998 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2024 |
| ÍNDICE H | 0 |
Riversand
In-situ cosmogenic 10 Be (and 26 Al) concentrations in alluvial sediments provide a spatially averaged signal of the erosion rate of the catchment area. Catchmentwide erosion rates reflect the production rate of the entire basin, and their calculation requires knowledge of the complete production rate model. Available calculators determine production rates on a pixel-based approach and achieve computational efficiency by relying on a scaling meth…
Stratigraphy, paleomagnetism, and cosmogenic-isotope burial ages of fossil-bearing strata within Riverbluff Cave, Greene County, Missouri
Riverbluff Cave, in Greene County, Missouri, is a short single passage between the James River and its direct tributary, Ward Branch. Before stream incision the cave functioned as a spillway/piracy between the two streams during high-discharge events and accumulated a sequence of stratified fluvial sediments within the cave. Five cosmogenic-nuclide burial ages for these sediments range from 0.984 to 0.570 Ma. These ages are consistent with both t…
Deglaciation and late-glacial climate change in the White Mountains, New Hampshire, USA
Recession of the Laurentide Ice Sheet from northern New Hampshire was interrupted by the Littleton-Bethlehem (L-B) readvance and deposition of the extensive White Mountain Moraine System (WMMS). Our mapping of this moraine belt and related glacial lake sequence has refined the deglaciation history of the region. The age of the western part of the WMMS is constrained to ~14.0–13.8 cal ka BP by glacial Lake Hitchcock varves that occur beneath and a…
Improving cosmogenic-nuclide burial dating
Periglacial Climate at the 2.5 Ma Onset of Northern Hemisphere Glaciation Inferred from the Whippoorwill Formation, Northern Missouri, USA
The Whippoorwill Formation is a gleyed diamicton that is present locally within bedrock depressions beneath the oldest glacial till in northern Missouri, USA. Stratigraphy, paleomagnetism, and cosmogenic–nuclide burial ages show that it was deposited between the Matuyama–Gauss magnetostratigraphic boundary at 2.58 Ma and the first advance of the Laurentide ice sheet into Missouri at 2.47 ± 0.19 Ma. High cosmogenic–nuclide concentrations also show…
Slow regolith degradation without creep determined by cosmogenic nuclide measurements in Arena Valley, Antarctica
Estimates of regolith degradation in the McMurdo Dry Valleys of Antarctica are currently based on indirect evidence and ancient ashes at or near the soil surface that suggest excellent preservation of surfaces. On the other hand, the existing cosmogenic-nuclide surface exposure ages from many parts of the Dry Valleys are younger than the age of surface deposits inferred from stratigraphic relations. This suggests some combination of surface erosi…
A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements
Glacioisostasy and Lake-Level Change at Moosehead Lake, Maine
Reconstructions of glacioisostatic rebound based on relative sea level in Maine and adjacent Canada do not agree well with existing geophysical models. In order to understand these discrepancies better, we investigated the lake-level history of 40-km-long Moosehead Lake in northwestern Maine. Glacioisostasy has affected the level of Moosehead Lake since deglaciation ca. 12,500 14 C yr B.P. Lowstand features at the southeastern end and an abandone…
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Glacioisostasy and Lake-Level Change at Moosehead Lake, Maine
Reconstructions of glacioisostatic rebound based on relative sea level in Maine and adjacent Canada do not agree well with existing geophysical models. In order to understand these discrepancies better, we investigated the lake-level history of 40-km-long Moosehead Lake in northwestern Maine. Glacioisostasy has affected the level of Moosehead Lake since deglaciation ca. 12,500 14 C yr B.P. Lowstand features at the southeastern end and an abandone…
Slow regolith degradation without creep determined by cosmogenic nuclide measurements in Arena Valley, Antarctica
Estimates of regolith degradation in the McMurdo Dry Valleys of Antarctica are currently based on indirect evidence and ancient ashes at or near the soil surface that suggest excellent preservation of surfaces. On the other hand, the existing cosmogenic-nuclide surface exposure ages from many parts of the Dry Valleys are younger than the age of surface deposits inferred from stratigraphic relations. This suggests some combination of surface erosi…
A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements
Periglacial Climate at the 2.5 Ma Onset of Northern Hemisphere Glaciation Inferred from the Whippoorwill Formation, Northern Missouri, USA
The Whippoorwill Formation is a gleyed diamicton that is present locally within bedrock depressions beneath the oldest glacial till in northern Missouri, USA. Stratigraphy, paleomagnetism, and cosmogenic–nuclide burial ages show that it was deposited between the Matuyama–Gauss magnetostratigraphic boundary at 2.58 Ma and the first advance of the Laurentide ice sheet into Missouri at 2.47 ± 0.19 Ma. High cosmogenic–nuclide concentrations also show…
Improving cosmogenic-nuclide burial dating
Stratigraphy, paleomagnetism, and cosmogenic-isotope burial ages of fossil-bearing strata within Riverbluff Cave, Greene County, Missouri
Riverbluff Cave, in Greene County, Missouri, is a short single passage between the James River and its direct tributary, Ward Branch. Before stream incision the cave functioned as a spillway/piracy between the two streams during high-discharge events and accumulated a sequence of stratified fluvial sediments within the cave. Five cosmogenic-nuclide burial ages for these sediments range from 0.984 to 0.570 Ma. These ages are consistent with both t…
Deglaciation and late-glacial climate change in the White Mountains, New Hampshire, USA
Recession of the Laurentide Ice Sheet from northern New Hampshire was interrupted by the Littleton-Bethlehem (L-B) readvance and deposition of the extensive White Mountain Moraine System (WMMS). Our mapping of this moraine belt and related glacial lake sequence has refined the deglaciation history of the region. The age of the western part of the WMMS is constrained to ~14.0–13.8 cal ka BP by glacial Lake Hitchcock varves that occur beneath and a…
Riversand
In-situ cosmogenic 10 Be (and 26 Al) concentrations in alluvial sediments provide a spatially averaged signal of the erosion rate of the catchment area. Catchmentwide erosion rates reflect the production rate of the entire basin, and their calculation requires knowledge of the complete production rate model. Available calculators determine production rates on a pixel-based approach and achieve computational efficiency by relying on a scaling meth…
Geology and Paleoclimatology Research (7 obras) · Geomorphology (7 obras) · Geology (6 obras) · Cosmogenic nuclide (5 obras) · Erosion (5 obras) · Physical geography (5 obras) · Geological formations and processes (4 obras) · Earth science (3 obras) · Environmental Science (3 obras) · Geography (3 obras)