The Mesozoic, perhaps representing the longest period of warmth during Phanerozoic Earth
history, contains in general sparse and frequently equivocal evidence for polar ice. Although …

▪ Abstract Accumulation rates of terrestrial sediment have increased in the past few million
years both on and adjacent to continents, although not everywhere. Apparently, erosion has …

Species distribution modeling is a valuable tool with many applications across ecology and
evolutionary biology. The selection of biologically meaningful environmental variables that …

The plate tectonics revolution in the earth sciences has provided a valuable new framework
for understanding long-term landform development. This innovative text provides a …

Around the globe, and in a variety of settings including active and inactive mountain belts,
increases in sedimentation rates as well as in grain sizes of sediments were recorded at∼ 2 …

“This is not only the best environmental sociology text I've used, but it is the best text of any
type I've used in college-level teaching.”–Dr. Cliff Brown, University of New Hampshire Join …

Glaciations have occurred episodically at different time intervals and for different durations in
Earth's history. Ice covers have formed in a wide range of plate tectonic and structural …

Simple insights from the physics of ice, water and sediment place constraints on the possible
sediment-transport behavior of glaciers and ice sheets. Because glaciers concentrate runoff …

Abstract Measurements of 87 Sr/86 Sr on samples of planktonic foraminifers were used to
reconstruct changes in the Sr isotopic composition of seawater for the past 8 Ma. The late …

The transition in the middle Pleistocene (∼ 0.9 Ma) seen in δ18O deep‐sea‐core records
from relatively low‐amplitude, high‐frequency (41 kyr) to high‐amplitude, low‐frequency …