The shoreline preservation index as a relative-age dating tool for late Pleistocene shorelines: an example from the Bonneville basin, U.S.A.
This paper evaluates the usefulness of the shoreline preservation index for estimating the age of late Pleistocene palaeolake shorelines. It also determines for the study area the relative influence of various factors on shoreline preservation
Composition, properties and radiocarbon age of humus in paleosols
Paleosols of various age from the Russian Plain and Western Siberia were studied for their humus composition and physico-chemical properties. The permanent features of humus in paleosols useful for paleogeographical reconstruction and geoecological
Age group ; Czech Republic ; Demography ; Migration ; Migratory flow
Rate of migration and its differentiation by age in the districts. Typology of districts in term of long-term migration development. The contribution, based on the assessment of rather broad age intervals, has revealed two development stages
Dendroclimatic reconstruction of summer temperatures in northwestern Canada since A.D. 1638 based on age-dependent modeling
of differences in zonal and regional climate variability during the past few centuries. Age-dependent dendroclimatic modeling can provide a sensitive record of recent climatic change that allows the inclusion of previously rejected sites into dendroclimatic
Little ice age glacial activity in Peter Lougheed and Elk Lakes Provincial Park, Canadian Rocky Mountains
Alberta ; British Columbia ; C 14 dating ; Canada ; Dendrochronology ; Geochronology ; Glacial features ; Lichenometry ; Little ice age ; Moraine ; Palaeogeography ; Rocky Mountains
This formation has been the subject of considerable controversy in the literature and ages ranging from the late Miocene to the late Pleistocene have been proposed, while its mode of origin has been variously ascribed to fluvial, aeolian and marine
processes. In this paper the geomorphology of the formation is described and this information, together with that gleaned from the study of sections, has not only allowed a model of emplacement to be proposed, but also cast light on its likely age
New radiocarbon ages for Sierra Nevada deglaciation, the first Be-10 measurements from the Laurentide terminal moraine, and calculations based on paleomagnetic field strength have the potential to substantially improve the accuracy of cosmogenic age
for at least 70 years by an irregularity in age structure. This will be most strongly felt after 2030 when the populous generation born in the 1970s will be reaching the age of the retirement. - (MS)
Sediments from Rapid Lake document glacial and vegetation history in the Temple Lake valley of the Wind River Range, Wyoming over the past 11,000 to 12,000 yr. Radiocarbon age determinations on basal detrital organic matter from Rapid Lake
and Temple Lake bracket the age of the Temple Lake moraine, suggesting that the moraine formed in the late Pleistocene.
Renewed excavations (1990) recovered a series of 14C samples related to the complex stratigraphy. Six 14C dates show that the recently excavated deposits range in age between 45,000 and 27,000 yr B.P. These ages suggest that the upper deposits
In this study, the AA. analysed a series of aerial photographs, the age distribution of floodplain deposits and sedimentation data of reservoirs in order to understand sediment routing in mountain rivers. The main rivers investigated were the Saru
River and the Higashi-gouchi River located in Hokkaido and Shizuoka Prefectures, northern and central districts of Japan. The age distribution of floodplain deposits available for three other rivers, the Furano, Nunobe and Haruki is also investigated.
is used to predict the form of the equilibrium distribution, which is then removed, leaving a corrected distribution which reflects the age-frequency of surface boulders deposited during the Little Ice Age. The results confirm that maximum avalanche