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Vor 100 Jahren: der Bergsturz von Elm. (Il y a cent ans: l'éboulement d'Elm)
Dynamique de versant ; Eboulement ; Elm ; Glarus ; Géographie de l'Europe ; Montagne ; Mouvement de masse ; Siècle XIX ; Suisse

A review of the mid-Holocene elm decline in the British Isles
Over the past 50 years the most enigmatic feature of pollen diagrams from northwest Europe has been the mid-Holocene elm decline, and there has been much speculation as to the origin(s) and cause(s) of this event. A total of 150 radiocarbon dates
from 139 sites spanning the elm decline in Britain and Ireland have been collated and scrutinized. Statistical analyses on 138 dates show that the event has a mean date of 5036 C 14 yr BP with a standard deviation of 247. Recent research

The diffusion of Dutch elm disease

The Holocene pollen sequence in the Minnesota area is « asymmetric » around the so-called prairie period : the early Holocene is dominated by elm and the late Holocene by oak. The elm zone is interpreted as a manifestation of summer monsoonal rains

Elm tree rings as a rainfall record

Interprétation paléogéographique liée à la découverte d'un tibia d'un jeune phoque dans le faciès interchenal de sable et gravier de la crête Twin Elm. Le sable et le gravier sont des dépôts subaqueux d'une plaine d'épandage fluvioglaciaire de la

| Klamath River, Ca. (1964) 100ans| Western Run Md. (1972) 2100ans| Elm Creek, Tx. (1972) 400ans.

of many hardwood taxa (e.g., ash, oak, elm), and the initiation of bog development are recorded beginning about 13,000 yr B. P. Recent reconstructions of late-glacial and early postglacial vegetational changes provide a context for understanding

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