Glaciation of the Grays Lake, Illinois, quadrangle

Ogy of the Jonesboro 15 - Minute Quadrangle , Southwestern Illinois

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Sandhill Crane Abundance and Nesting Ecology at Grays Lake, Idaho

We examined population size and factors influencing nest survival of greater sandhill cranes (Grus canadensis tabida) at Grays Lake National Wildlife Refuge, Idaho, USA, during 1997–2000. Average local population of cranes from late April to early May, 1998–2000, was 735 cranes, 34% higher than that reported for May 1970–1971. We estimated 228 (SE 1⁄4 30) nests in the basin core (excluding rene...

Surficial Geology of Keyesport Quadrangle Clinton, Bond, and Fayette Counties, Illinois

Late Pleistocene and Holocene glaciation of the Fish Lake valley, northeastern Alaska Range, Alaska

We reconstructed a chronology of glaciation spanning from the Late Pleistocene through the late Holocene for Fish Lake valley in the north-eastern Alaska Range using Be surface exposure dating and lichenometry. After it attained its maximum late Wisconsin extent, the Fish Lake valley glacier began to retreat ca. 16.5 ka, and then experienced a readvance or standstill at 11.6 0.3 ka. Evidence of...

From Ice to Ice-free: Glaciation in the Lake Ayr Valley, Central Tasmania

During the Last Glaciation in Tasmania a large ice cap developed on the western edge of the Central Plateau and overlapped on to the Cradle Mountain-Lake St Clair area. Several reticulate lobes flowed from this source, with the largest northern outlet, the Mersey Glacier, covering an area of c. 282 km2• The Lake Ayr Valley was occupied by a smail diffiuent lobe of the Mersey Glacier, and the la...