Sentences with phrase «glacial deposits from»

In his mind, the site snuggled too closely to glacial deposits from the last ice age that lay atop the sloping Martian-esque hills.

Not exact matches

* Chinese glacial deposits show that three of the oldest and coldest ice ages in Earth's history date from 600 to 750 million years ago.

Lead author Martin Kennedy at the University of California, Riverside, and colleagues collected limestone and dolomite rocks from Precambrain glacial deposits in northern Namibia, central Australia and the North American Cordillera.

Bartek, L.R., and Anderson, J.B., 1991, Facies distribution resulting from sedimentation under polar interglacial climatic conditions within a high - latitude marginal basin, McMurdo Sound, Antarctica: in J.B. Anderson and G.M. Ashley, eds., Paleoclimatic Interpretation of Glacial Marine Deposits, Special Publication 261, Geological Society of America, Boulder, p. 27 - 49.

Imputities are a main problem in Greenland ice cores where a mix of seasalt / carbonate and acidic dust from Icelandic volcanoes can produce CO2 in situ, but is less of interest in deep inland Antarctic ice cores, except during the deepest times of glacials, when far more dust is deposited.

The continental glaciations of the Pleistocene left signatures on the landscape in the form of glacial deposits and landforms; however, the best knowledge of the magnitude and timing of the various glacial and interglacial periods comes from oxygen isotope records in ocean sediments.