Arrays of magnetometers operated in NW Europe

1982 ◽  
pp. 141-152 ◽  
Author(s):  
W F Stuart
Keyword(s):  
Nw Europe

scholarly journals Evolution of a Holocene banner bank controlled by morphodynamics and structural setting of a macrotidal coast: Saint-Brieuc Bay (NW-Europe)

2021 ◽  
Vol 12 (5) ◽  
pp. 101183
Author(s):  
Kalil Traoré ◽  
David Menier ◽  
Erwan Gensac ◽  
Pascal Le Roy ◽  
Clément Lambert ◽  
...  
Keyword(s):  
Structural Setting ◽  
Nw Europe

scholarly journals A Lateglacial palaeosol cover in the Altdarss area, southern Baltic Sea coast (northeast Germany): investigations on pedology, geochronology and botany

2006 ◽  
Vol 85 (3) ◽  
pp. 197-220 ◽  
Author(s):  
K. Kaiser ◽  
A. Barthelmes ◽  
S. Czakó Pap ◽  
A. Hilgers ◽  
W. Janke ◽  
...  
Keyword(s):  
Soil Cover ◽  
Younger Dryas ◽  
Soil Surface ◽  
Vegetation Pattern ◽  
Buried Soils ◽  
Radiocarbon Dates ◽  
Buried Soil ◽  
Nw Europe ◽  
Aeolian Sands ◽  
Sea Coast

AbstractA new site with Lateglacial palaeosols covered by 0.8 - 2.4 m thick aeolian sands is presented. The buried soils were subjected to multidisciplinary analyses (pedology, micromorphology, geochronology, dendrology, palynology, macrofossils). The buried soil cover comprises a catena from relatively dry (’Nano’-Podzol, Arenosol) via moist (Histic Gleysol, Gleysol) to wet conditions (Histosol). Dry soils are similar to the so-called Usselo soil, as described from sites in NW Europe and central Poland. The buried soil surface covers ca. 3.4 km2. Pollen analyses date this surface into the late Allerød. Due to a possible contamination by younger carbon, radiocarbon dates are too young. OSL dates indicate that the covering by aeolian sands most probably occurred during the Younger Dryas. Botanical analyses enables the reconstruction of a vegetation pattern typical for the late Allerød. Large wooden remains of pine and birch were recorded.

Changes in extreme wind speeds in NW Europe simulated by generalized linear models

2005 ◽  
Vol 83 (1-4) ◽  
pp. 121-137 ◽  
Author(s):  
Z. Yan ◽  
S. Bate ◽  
R. E. Chandler ◽  
V. Isham ◽  
H. Wheater
Keyword(s):  
Generalized Linear Models ◽  
Linear Models ◽  
Wind Speeds ◽  
Extreme Wind ◽  
Extreme Wind Speeds ◽  
Nw Europe

Geochemical disturbance and paleoenvironmental changes during the Early Toarcian in NW Europe

2013 ◽  
Vol 341 ◽  
pp. 1-15 ◽  
Author(s):  
Carine Lézin ◽  
Bernard Andreu ◽  
Pierre Pellenard ◽  
Jean-Luc Bouchez ◽  
Laurent Emmanuel ◽  
...  
Keyword(s):  
Paleoenvironmental Changes ◽  
Nw Europe

scholarly journals Bioimmuration: exceptional fossil preservation made routine

1992 ◽  
Vol 6 ◽  
pp. 287-287 ◽  
Author(s):  
Paul D. Taylor ◽  
Jonathan A. Todd
Keyword(s):  
Soft Tissues ◽  
Soft Part ◽  
High Fidelity ◽  
Marine Deposits ◽  
Living Space ◽  
Extant Genus ◽  
Fossil Preservation ◽  
Sessile Organisms ◽  
Nw Europe ◽  
Hard Substrates

Bioimmuration, broadly defined as fossilization by virtue of organic overgrowth, allows preservation of soft-bodied organisms and soft parts of organisms with mineralized skeletons. Sessile organisms attached to hard or firm substrates are routinely overgrown by other organisms competing for living space. If the overgrowing organism has a mineralized skeleton which is likely to be fossilized, then it may carry a high fidelity (sub-micron scale) impression of the overgrown organism on its underside. This is a mould bioimmuration, the simplest mode of preservation. A diagenetic infilling of the mould, commonly by calcite, produces a cast bioimmuration. In addition, the protected microenvironment between the overgrowing organism and the substratum favours early diagenetic permineralization of the soft tissues of the bioimmured organism and the development of more complex preservational styles.In spite of its potential for soft part fossilization, very little research has been undertaken on bioimmuration, with the notable exception of the work of Ehrhard Voigt principally on Maastrichtian sea-grass communities. Research in progress is revealing a great abundance of bioimmured fossils in Mesozoic shallow marine deposits of NW Europe where oysters and serpulids overgrew a variety of other organisms.Bioimmured soft-bodied bryozoans belonging to the Order Ctenostomata are very common and display a range of preservational styles. Minute spines and pores ornamenting the cuticular zooidal walls are sometimes present, as are permineralized pore chambers. The high diversity of stoloniferan and carnosan ctenostomes encrusting hard substrates in the Oxfordian and Kimmeridgian is striking and contrasts with the depauperate fauna of calcified cyclostome bryozoans.Oyster shells in the Kimmeridge Clay are often encrusted by myriads of tiny individuals of the inarticulate brachiopod Discinisca, previously known from comparatively few specimens of this age. Emerging from the fragile commissures are setae several times the length of the delicate phosphatic shells. Setae of neighbouring individuals may be aligned in parallel facing away from the direction of approach of the overgrowing organism.The hemichordate Rhabdopleura is common as a bioimmured fossil in the Oxford Clay. Overgrowth protects the periderm and the black stolons, and colonies are much more intact than previously described examples of this genus from the Jurassic.The Phylum Entoprocta had no unequivocal fossil record before the recent discovery of bioimmured entoprocts in the Kimmeridge Clay. Colonies comprise stolons linking erect zooids which have been pushed flat against the substratum during overgrowth. The existence of thickened sockets at the base of the zooids permits assignment of the fossils to the extant genus Barentsia. Permineralization of the entoproct cuticle has occurred, leaving minute pores apparently once occupied by epithelial microvilli.Pedunculate barnacles are commonly found bioimmured by oysters in the mid-Cretaceous Cambridge Greensand. Normally the cirri are retracted but in one exceptional example their outlines are clearly visible as moulds on the attachment area of an oyster.

Melanism in Biston betularius from north-west Europe (Lepidoptera: Geometridae)

1976 ◽  
Vol 7 (4) ◽  
pp. 261-266 ◽  
Keyword(s):  
Air Pollution ◽  
20Th Century ◽  
Central Europe ◽  
Clinal Variation ◽  
North West ◽  
South West ◽  
Random Samples ◽  
Melanic Form ◽  
The 19Th Century ◽  
Nw Europe

AbstractRandom samples of B. betularius males show a clinal variation in the degree of melanism: from high melanic frequencies in Denmark and south-west Sweden to almost no melanism in south Finland. Old samples from Denmark dating back to the end of the 19th century have strikingly lower melanic frequencies than recent samples showing an increase in melanism during the 20th century in NW Europe. Levels of air pollution and melanic frequency coincide fairly well indicating that the spread of melanism is a response to increased air pollution as also is demonstrated elsewhere. In Britain, in central Europe, and in USA a black morph has evolved whereas in NW Europe the grey morph (insularius) is the predominating melanic form indicating that evolution of melanism in B. betularius has followed its own course in NW Europe.

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