scholarly journals Oxygen Isotope Variation in Permafrost, Tuktoyaktuk Peninsula area, Northwest Territories

1983 ◽  
Author(s):  
J R Mackay
Keyword(s):  
Oxygen Isotope ◽  
Northwest Territories ◽  
Isotope Variation

Mass-independent Oxygen Isotope Variation in the Solar Nebula

2008 ◽  
Vol 68 (1) ◽  
pp. 187-218 ◽  
Author(s):  
E. D. Young ◽  
K. Kuramoto ◽  
R. A. Marcus ◽  
H. Yurimoto ◽  
S. B. Jacobsen
Keyword(s):  
Oxygen Isotope ◽  
Solar Nebula ◽  
Isotope Variation

Oxygen isotope variation in the water cycle of the Yamzho lake Basin in southern Tibetan Plateau

2009 ◽  
Vol 54 (16) ◽  
pp. 2758-2765 ◽  
Author(s):  
Jing Gao ◽  
LiDe Tian ◽  
YongQin Liu ◽  
TongLiang Gong
Keyword(s):  
Tibetan Plateau ◽  
Oxygen Isotope ◽  
Water Cycle ◽  
Lake Basin ◽  
Southern Tibetan Plateau ◽  
Isotope Variation

The use of oxygen isotope variation in shells of estuarine mollusks as a quantitative record of seasonal and annual Colorado river discharge 1 1Associate editor: K. K. Falkner

2004 ◽  
Vol 68 (6) ◽  
pp. 1253-1263 ◽  
Author(s):  
David L. Dettman ◽  
Karl W. Flessa ◽  
Peter D. Roopnarine ◽  
Bernd R. Schöne ◽  
David H. Goodwin
Keyword(s):  
Oxygen Isotope ◽  
River Discharge ◽  
Colorado River ◽  
Isotope Variation

9. Mass-independent Oxygen Isotope Variation in the Solar Nebula

2008 ◽  
pp. 187-218 ◽  
Author(s):  
Edward D. Young ◽  
Kyoshi Kuramoto ◽  
Rudolph A. Marcus ◽  
Hisayoshi Yurimoto ◽  
Stein B. Jacobsen
Keyword(s):  
Oxygen Isotope ◽  
Solar Nebula ◽  
Isotope Variation

Oxygen Isotope Variation in Stony-Iron Meteorites

Science ◽  
2006 ◽  
Vol 313 (5794) ◽  
pp. 1763-1765 ◽  
Author(s):  
R. C. Greenwood
Keyword(s):  
Oxygen Isotope ◽  
Iron Meteorites ◽  
Isotope Variation

scholarly journals Belemnite-based strontium, carbon and oxygen isotope stratigraphy of the type area of the Maastrichtian Stage

2011 ◽  
Vol 90 (2-3) ◽  
pp. 259-270 ◽  
Author(s):  
H.B. Vonhof ◽  
J.W.M. Jagt ◽  
A. Immenhauser ◽  
J. Smit ◽  
Y.W. van den Berg ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Diagnostic Feature ◽  
Time Interval ◽  
Sr Isotope ◽  
Diagenetic Alteration ◽  
Type Area ◽  
Carbon And Oxygen Isotope ◽  
El Kef ◽  
Age Model ◽  
Isotope Variation

AbstractBelemnitellid cephalopods from the Maastrichtian stratotype area (southeast Netherlands) are shown to be comparatively well preserved. Although partial diagenetic alteration has been observed, micromilling techniques have permitted the extraction of pristine belemnite calcite, suitable for the reconstruction of strontium (Sr), oxygen (O) and carbon (C) isotope variation of Maastrichtian seawater. A distinct Sr isotope pattern in the Maastricht record can be matched stratigraphically with records from Hemmoor (northern Germany), El Kef (Tunisia) and ODP site 690 (Maud Rise, Antarctica), leading to a new chemostratigraphical age model for the Maastrichtian stratotype section. Our data improve currently applied strontium isotope stratigraphical reference curves by revealing an Sr isotope inflection pattern near the lower/upper Maastrichtian boundary that is a potentially diagnostic feature for intra-Maastrichtian stratigraphical correlation between distant sections. Belemnites further show significant stratigraphical oxygen isotope variation through the Maastrichtian. We interpret this variation to have resulted from palaeoceanographic reorganisations in the Atlantic Ocean during this time interval.

Oxygen isotope variation in bone phosphate

1989 ◽  
Vol 4 (3) ◽  
pp. 317-323 ◽  
Author(s):  
Boaz Luz ◽  
Yehoshua Kolodny
Keyword(s):  
Oxygen Isotope ◽  
Isotope Variation ◽  
Bone Phosphate

Pleistocene ice and sand wedges, Hooper Island, Northwest Territories

1983 ◽  
Vol 20 (7) ◽  
pp. 1087-1097 ◽  
Author(s):  
J. Ross Mackay ◽  
J. V. Matthews Jr.
Keyword(s):  
Oxygen Isotope ◽  
Northwest Territories ◽  
Environmental Conditions ◽  
Isotope Ratios ◽  
Winter Ground ◽  
Vertical Extent ◽  
Oxygen Isotope Ratios ◽  
Ice Wedge ◽  
Collapse Structures

Buried ice and sand wedges have been found in glacially deformed sediments that can be no younger than the early Wisconsinan. The environmental conditions at the time of ice-wedge cracking have been inferred from the number of elementary ice veinlets, the vertical extent of the wedges, collapse structures, oxygen isotope ratios, and macrofossils of plants and insects. The winter ground and summer climates were probably as warm or warmer than the present. The preservation of the ice in the ice wedges shows that permafrost has been present at Hooper Island since at least the early Wisconsinan.

Sign in / Sign up

Export Citation Format

Share Document