The McMurdo Dry Valleys, Antarctica (MDV) are among the oldest landscapes on Earth, and some landforms there present an intriguing apparent contradiction such that millions of years old surface deposits maintain their meter-scale morphology despite the fact that measured erosion rates are 0.1-4 m/Ma. We analyzed the concentration of cosmic ray-produced 10Be and 26Al in quartz sands from regolith directly above and below two well-documented ash deposits in the MDV, the Arena Valley ash (40Ar/39Ar age of 4.33 Ma) and the Hart ash (K-Ar age of 3.9 Ma). Measured concentrations of 10Be and 26Al are significantly less than expected given the age of the in situ air fall ashes and are best interpreted as reflecting the degradation rate of the overl...
We analyze published cosmogenic 3He depth profiles through the till that covers relict glacier ice i...
Cosmogenic nuclides produced in terrestrial rocks provide a versatile way of quantifying Earth surfa...
The diversity in landscapes at the Earth's surface is the result, amongst other things, of the balan...
Many glacial deposits in the Quartermain Mountains, Antarctica present two apparent contradictions r...
Buried snowpack deposits are found within the McMurdo Dry Valleys of Antarctica, which offers the op...
Recent histories of glaciations along the southeasternmost ridge of the Appalachian Mountains, Unite...
In 2001, a small H4 chondrite, Frontier Mountain (FRO) 01149, was found on a glacially eroded surfac...
Terrestrial cosmogenic exposure studies are an established and rapidly evolving tool for landscapes ...
in 2001, a small H4 chondrite, Frontier Mountain (FRO) 01149, was found on a glacially eroded surfac...
Lead isotopic compositions and Pb and Ba concentrations have been measured in ice cores from Law Dom...
Soil production in actively uplifting or high precipitation alpine landscapes is potentially rapid. ...
Ice cores provide a record of changes in dust flux to Antarctica, which is thought to reflect change...
The inland region of the McMurdo Dry Valleys (MDV) of Antarctica represents a subzero, hyper-arid en...
Erosion rates offer insight on landscape development and the relative importance of chemical and phy...
Terrestrial ages of Antarctic meteorites are one of the few parameters that will help us to understa...
We analyze published cosmogenic 3He depth profiles through the till that covers relict glacier ice i...
Cosmogenic nuclides produced in terrestrial rocks provide a versatile way of quantifying Earth surfa...
The diversity in landscapes at the Earth's surface is the result, amongst other things, of the balan...
Many glacial deposits in the Quartermain Mountains, Antarctica present two apparent contradictions r...
Buried snowpack deposits are found within the McMurdo Dry Valleys of Antarctica, which offers the op...
Recent histories of glaciations along the southeasternmost ridge of the Appalachian Mountains, Unite...
In 2001, a small H4 chondrite, Frontier Mountain (FRO) 01149, was found on a glacially eroded surfac...
Terrestrial cosmogenic exposure studies are an established and rapidly evolving tool for landscapes ...
in 2001, a small H4 chondrite, Frontier Mountain (FRO) 01149, was found on a glacially eroded surfac...
Lead isotopic compositions and Pb and Ba concentrations have been measured in ice cores from Law Dom...
Soil production in actively uplifting or high precipitation alpine landscapes is potentially rapid. ...
Ice cores provide a record of changes in dust flux to Antarctica, which is thought to reflect change...
The inland region of the McMurdo Dry Valleys (MDV) of Antarctica represents a subzero, hyper-arid en...
Erosion rates offer insight on landscape development and the relative importance of chemical and phy...
Terrestrial ages of Antarctic meteorites are one of the few parameters that will help us to understa...
We analyze published cosmogenic 3He depth profiles through the till that covers relict glacier ice i...
Cosmogenic nuclides produced in terrestrial rocks provide a versatile way of quantifying Earth surfa...
The diversity in landscapes at the Earth's surface is the result, amongst other things, of the balan...