COLLAPSE STRUCTURES NEAR SASKATOON, SASKATCHEWAN, CANADA

1967 ◽  
Vol 4 (5) ◽  
pp. 757-767 ◽  
Author(s):  
E. A. Christiansen
Keyword(s):  
Late Pleistocene ◽  
Point Group ◽  
Pleistocene Glaciation ◽  
High Angle ◽  
Bedrock Surface ◽  
Colorado Group ◽  
Collapse Structures

A structural depression herein called the "Saskatoon. Low" is apparent on structural maps drawn on the top of the Lea Park Formation–Upper Colorado Group, on the bedrock surface, and on the uppermost till surface. The structure was probably formed by collapse as a result of the removal of salt from the Elk Point Group. The structure presumably comprises numerous individual fault blocks, which are bounded by high-angle step faults. The structure may have started to form during deposition of the Bearpaw Formation. It was well developed, however, at the time of the advent of Pleistocene glaciation and continued to develop until late Pleistocene time. The final collapse is radiocarbon dated at about 12 000 years ago.

Evidence for Early Pleistocene glaciation from borecore stratigraphy in north-central Alberta, Canada

2017 ◽  
Vol 54 (4) ◽  
pp. 445-460 ◽  
Author(s):  
Laurence D. Andriashek ◽  
René W. Barendregt
Keyword(s):  
Late Pleistocene ◽  
Rocky Mountains ◽  
New Record ◽  
Early Pleistocene ◽  
Laurentide Ice Sheet ◽  
Pleistocene Glaciation ◽  
North Central ◽  
Lake Formation ◽  
Colorado Group ◽  
Late Wisconsinan

Pleistocene sediments collected in north-central Alberta, Canada, were subsampled and studied for paleomagnetic remanence characteristics. A magnetostratigraphy has been established for sediments previously assumed to represent multiple continental (Laurentide) glaciations but for which no geochronology was available. Based on the Quaternary record elsewhere in Alberta and Saskatchewan, it was thought that some of these sediments were deposited during pre-late Wisconsinan glaciations. The Quaternary sedimentary successions of north-central Alberta have a thickness up to 300 m within buried valleys and are composed of diamicts interbedded with glaciolacustrine and outwash sediments. Most of the sampled units are not accessible from outcrop, and their sedimentology and stratigraphy is derived from core data only. In 4 of 16 borecores sampled to date, diamict that correlates with the Bronson Lake Formation till is reversely magnetized, indicating an Early Pleistocene age. This formation is underlain by either Empress Formation sediments or Colorado Group shale, and is overlain by one or more normally magnetized glacigenic sedimentary units of the Bonnyville, Marie Creek, and Grand Centre formations, respectively. This new record of Early Pleistocene glaciation in north-central Alberta places the westernmost extent of earliest Laurentide ice at least 300 km farther west than its previously established limit in the Saskatoon and Regina regions of the Canadian Interior Plains, but still to the east of the maximum extent of the Late Wisconsinan (Late Pleistocene) Laurentide Ice Sheet, which extended into the foothills of the Alberta and Montana Rocky Mountains.

A sedimentary record from the Makarov Basin, Arctic Ocean, reveals changing middle to Late Pleistocene glaciation patterns

2021 ◽  
Vol 270 ◽  
pp. 107176
Author(s):  
Wenshen Xiao ◽  
Leonid Polyak ◽  
Rujian Wang ◽  
Christelle Not ◽  
Linsen Dong ◽  
...  
Keyword(s):  
Arctic Ocean ◽  
Late Pleistocene ◽  
Pleistocene Glaciation ◽  
Sedimentary Record ◽  
Makarov Basin

Late Pleistocene glaciation of the Mt Giluwe volcano, Papua New Guinea

2011 ◽  
Vol 30 (19-20) ◽  
pp. 2676-2689 ◽  
Author(s):  
Timothy T. Barrows ◽  
Geoffrey S. Hope ◽  
Michael L. Prentice ◽  
L. Keith Fifield ◽  
Stephen G. Tims
Keyword(s):  
Papua New Guinea ◽  
Late Pleistocene ◽  
New Guinea ◽  
Pleistocene Glaciation

scholarly journals NEW DATA ON THE EXTENT OF THE LAST PLEISTOCENE GLACIATION IN THE GORNAYA SHORIA

2017 ◽  
Vol 2017 (3) ◽  
pp. 24-26
Author(s):  
Марина Адаменко ◽  
Marina Adamenko ◽  
Ярослав Гутак ◽  
Yaroslav Gutak ◽  
Богдан Воробьев ◽  
...  
Keyword(s):  
Late Pleistocene ◽  
Field Research ◽  
Early Summer ◽  
Mountain Region ◽  
Pleistocene Glaciation ◽  
Mountain Valley ◽  
North East ◽  
Last Glaciation ◽  
Extreme North

The article presents and summarizes the results of a field research on glacial relief of the Gornaya Shoria mountain region, within the Patyn mountain massif. The Patyn-2017 expedition was organized by the Russian Geographic Society. This region has been very poorly studied in the paleogeographical aspect. The available material can give only an approximate assessment of last glaciation in the Gornaya Shoria mountain region. The massif of Mount Patyn (1630 m) is located in the extreme north-east of the Mountain Shoria on the watershed of the Tashtyk and the Mrassu rivers. At present, the massif is completely devoid of modern glaciation. Early summer snowfields appear on the leeward slopes of the eastern, southern and northern macroslopes. The moraine deposits and the configuration of the relief forms have proved mountain-valley glaciation in the Late Pleistocene. The article also touches upon the issue of the origin of the so-called «megaliths» of the massif of Pustag mountain.

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