scholarly journals ‘Cenoceras islands’ in the Blue Lias Formation (Lower Jurassic) of West Somerset, UK: nautilid dominance and influence on benthic faunas

2019 ◽  
Vol 75 (1) ◽  
pp. 108-119 ◽  
Author(s):  
David H. Evans ◽  
Andy H. King
Keyword(s):  
United Kingdom ◽  
Relative Abundance ◽  
Lower Jurassic ◽  
Sedimentation Rates ◽  
The West ◽  
Satisfactory Solution ◽  
Large Numbers ◽  
Preferential Dissolution ◽  
Encrusting Organisms

Abstract Substantial numbers of the nautilid Cenoceras occur in a stratigraphically limited horizon within the upper part of the Lower Jurassic (Sinemurian Stage) Blue Lias Formation at Watchet on the West Somerset Coast (United Kingdom). Individual nautilid conchs are associated with clusters of encrusting organisms (sclerobionts) forming ‘islands’ that may have been raised slightly above the surrounding substrate. Despite the relatively large numbers of nautilid conchs involved, detailed investigation of their preservation suggests that their accumulation reflects a reduction in sedimentation rates rather than an influx of empty conches or moribund animals. Throughout those horizons in which nautilids are present in relative abundance, the remains of ammonites are subordinate or rare. The reason for this unclear, and preferential dissolution of ammonite conchs during their burial does seem to provide a satisfactory solution to the problem.

The Lower Jurassic phosphorites of southeastern British Columbia and terrane accretion to western North America

1989 ◽  
Vol 26 (8) ◽  
pp. 1612-1616 ◽  
Author(s):  
T. P. Poulton ◽  
J. D. Aitken
Keyword(s):  
British Columbia ◽  
North America ◽  
Oceanic Crust ◽  
West Coast ◽  
Cold Water ◽  
Lower Jurassic ◽  
Depositional Model ◽  
Western North America ◽  
The West ◽  
Terrane Accretion

Sinemurian phosphorites in southeastern British Columbia and southwestern Alberta conform with the "West Coast type" phosphorite depositional model. The model indicates that they were deposited on or near the Early Jurassic western cratonic margin, next to a sea or trough from which cold water upwelled. This suggests that the allochthonous terrane Quesnellia lay well offshore in Sinemurian time. The sea separating Quesnellia from North America was partly floored by oceanic crust ("Eastern Terrane") and partly by a thick sequence of rifted, continental terrace wedge rocks comprising the Purcell Supergroup and overlying Paleozoic sequence. This sequence must have been depressed sufficiently that access of upwelling deep currents to the phosphorite depositional area was not impeded.

scholarly journals Temporal and spatial patterns on serra, Scomberomorus brasiliensis (Teleostei, Scombridae), catches from the fisheries on the Maranhão coast, Brazil

2001 ◽  
Vol 61 (4) ◽  
pp. 541-546 ◽  
Author(s):  
V. da BATISTA ◽  
N. N. FABRÉ
Keyword(s):  
Spatial Patterns ◽  
Relative Abundance ◽  
West Coast ◽  
The West ◽  
Temporal And Spatial Patterns ◽  
Eastern Brazil ◽  
North Eastern ◽  
Displacement Pattern ◽  
Temporal And Spatial ◽  
Demersal Species

The displacement pattern of the serra, Scomberomorus brasiliensis, in North-eastern Brazil was analyzed from landing data recorded from the fleet fishing serra. Serra fishery has two seasons: from September to February (demersal species plus serra), and from March to August (almost only large amounts of serra). S. brasiliensis relative abundance increases similarly along the coast from March, but decreases first on the West coast from June. Records indicate that serra is near the coast at least until September/October in Eastern grounds. From October to March (strongest spawning season) there is no record of shoals on the coast. We concluded that the Maranhão coast is just a part of the migration circuit of S. brasiliensis that may exceed 300 nautical miles.

Understanding the Islamic State—A Review Essay

2016 ◽  
Vol 40 (4) ◽  
pp. 127-165 ◽  
Author(s):  
Daniel Byman
Keyword(s):  
Review Essay ◽  
Military Force ◽  
Islamic State ◽  
The West ◽  
High Quality ◽  
Terrorist Threat ◽  
Security Forces ◽  
Large Numbers ◽  
Raison D’État ◽  
Foreign Fighters

This article reviews several recent books on the Islamic State in order to understand its goals, motivations, strategy, and vulnerabilities. It argues that the Islamic State's ideology is powerful but also highly instrumental, offering the group legitimacy and recruiting appeal. Raison d'etat often dominates its decisionmaking. The Islamic State's strength is largely a consequence of the policies and weaknesses of its state adversaries. In addition, the group has many weaknesses of its own, notably its brutality, reliance on foreign fighters, and investment in a state as well as its tendency to seek out new enemies. The threat the Islamic State poses is most severe at the local and regional levels. The danger of terrorism to the West is real but mitigated by the Islamic State's continued prioritization of the Muslim world and the heightened focus of Western security forces on the terrorist threat. A high-quality military force could easily defeat Islamic State fighters, but there is no desire to deploy large numbers of Western ground troops, and local forces have repeatedly shown many weaknesses. In the end, containing the Islamic State and making modest rollback efforts may be the best local outcomes.

Islamophobia

2019 ◽  
pp. 244-271
Author(s):  
Martin Pugh
Keyword(s):  
The United States ◽  
Islamic State ◽  
Islamic Fundamentalism ◽  
The West ◽  
Small Minority ◽  
Large Numbers ◽  
Proximate Causes ◽  
To Come ◽  
The 1960S

This chapter discusses how, misled by Islamophobic propaganda, Britain and America were unable to come to terms with what they called ‘Islamism’. The origins of what is variously known as Islamism, Islamic fundamentalism, and radical Islamism lie in the 1960s, in the ideas of a handful of Muslims in Pakistan, Egypt, and Iran who believed that Muslims had been led astray from their religion by nationalist movements. Although some Muslims were critical of Western morality and politics, Islamism was not primarily anti-Western: it was essentially a reaction against what were widely seen as the corrupt, authoritarian, and secular regimes that controlled much of the Muslim world. The aim was to evict them, return to a purer form of Islam and re-create an Islamic state. In view of the exaggerated reputation it enjoys in the West, it is worth remembering that this movement has largely been a failure. Yet while fundamentalism appeals to only a small minority, it is also the case that large numbers of Muslims have become aggrieved by the policies of the Western powers. The explanation for this can be found in long-term frustration with the consistently pro-Israeli policy of Britain and the United States over Palestine, in addition to the proximate causes in the shape of two Afghan wars, the genocide in Bosnia, the Rushdie affair, and the first Gulf War in 1990, which made many Muslims see themselves as the victims of Western aggression and interventionism.

scholarly journals Trans-border (south-east Serbia/west Bulgaria) correlations of the Jurassic sediments: Infra-Getic Unit

2006 ◽  
pp. 19-33 ◽  
Author(s):  
Platon Tchoumatchenco ◽  
Dragoman Rabrenovic ◽  
Barbara Radulovic ◽  
Vladan Radulovic
Keyword(s):  
Lower Jurassic ◽  
Geological Heritage ◽  
Black Shales ◽  
Point Of View ◽  
The West ◽  
Coal Beds ◽  
Lower Member ◽  
Upper Bajocian ◽  
Upper Boundary ◽  
Lower Bathonian

The Infra-Getic Unit is a palaeogeographic unit, predestined by palaeotectonics. From the point of view of geological heritage, it represents a geosites framework. For the purpose of the correlation, the Serbian sections of Lukanja, Bogorodica Monastery, Rosomac and Senokos, as well as the Bulgarian sections of Komshtitsa, Gintsi, and Stanyantsi were used. The Jurassic sediments of the Infra-Getic Unit crop out on the southern slops of the Stara Planina Mountain in east Serbia and west Bulgaria. The Lower Jurassic started with continental and continental-marine sediments (clays and sandstones) (Lukanja clastics and Lukanja coal beds in Serbia and the Tuden Formation in Bulgaria) and continue with Lukanja quartz sandstones (Serbia) and the Kostina Formation (Bulgaria). These sediments are covered by Lukanja brachiopod beds and Lukanja limestones (Serbia) and the Romanov Dol, Ravna and Dolni Loukovit Members of the Ozirovo Formation (Bulgaria) predominantly consist of bioclastic limestones. The sedimentations follow with Lukanja belemnites-gryphaea beds (marls and clayey limestones), which in Bulgaria correspond to the Bukorovtsi Member (also marls and clayey limestones) of the Ozirovo Formation. The Middle Jurassic sedimentation started with black shales with Bossitra alpine. These sediments are individualized in Serbia as Senokos aleurolites and clays and in Bulgaria they are known as the Etropole Formation. In Serbia the section continues with sandstones called Vodenicki sandstones of Bajocian age, known in Bulgaria as the Dobrogled Member of the Polaten Formation. However, in Bulgaria, the age is Upper Bajocian-Lower Bathonian, and it cover the marls of the lower member (Gornobelotintsi Member) of the Bov Formation and is covered by the upper member - alternation of marls and clayey limestones - the Verenitsa Member of the Bov Formation. The Vodenicki sandstones-Dobrogled Member which ended their distribution in the section of Komshtitsa, to the east (in the Gintsi section), they are not represented - build a body of sandstones, a prodelta coming from the west to the east. The Bov Formation corresponds to the Senokos ammonite beds in east Serbia. The upper boundary of the Senokos ammonite beds and of the Bov Formation is sharp. It is covered by grey limestones of the Yavorec Formation in Bulgaria and by the Kamenica limestones in eastern Serbia. They are covered by grey or red nodular/lithoclastic limestones ("ammonitico rosso" type) of the Gintsi Formation in Bulgaria and the Pokrovenik ammonitic (acanthicum) limestones in Serbia. The Jurassic section in the Infra-Getic ended with grey micritic and lithoclastic limestones, which belong to the Rosomac and Rsovci limestones in east Serbia and to the Glozhene Formation in Bulgaria.

The Dahomean Middleman System, 1727–c. 1818

1987 ◽  
Vol 28 (3) ◽  
pp. 357-375 ◽  
Author(s):  
David Ross
Keyword(s):  
Nineteenth Century ◽  
Eighteenth Century ◽  
West African ◽  
The West ◽  
Large Numbers ◽  
Supply Problem ◽  
West African Coast ◽  
African Coast ◽  
Trading Partners

During the first quarter of the eighteenth century, European merchants bought more slaves in the Bight of Benin than on any other part of the West African coast. From c. 1720 until 1727 much of their buying was concentrated in Savi, the capital of a small Aja state called Whydah. When the Dahomeans overran Savi in 1727 they stopped the inland slave suppliers from travelling to the coast, prevented the local Hueda from going inland to collect slaves, and insisted that the Europeans bought slaves only from Dahomean dealers. In an attempt to make sure that the Europeans had nothing more to do with their former trading partners the Dahomeans burned the factories in Savi and forced their European occupants to retire to Grehue, Savi's port, a spot on the coast where the Europeans maintained a number of fortified warehouses.The middleman policy did not at first operate satisfactorily. There were two reasons for this. The first was that the Dahomeans were, in practice, unable to prevent the Europeans from continuing to trade with the Hueda. The second was that the inland suppliers refused to sell slaves to Savi's conquerors. The Dahomeans solved their ‘coastal’ problem in the 1740S by placing a garrison in Grehue. This garrison kept the exiled Hueda at bay and held the Europeans in what amounted to open captivity. The Dahomeans were never able completely to solve their ‘supply’ problem. In the 1730s and 1740S the inland merchants took their slaves to ports which opened up on the Bight to the east of Grehue. Only in the 1750s and 1760s did they channel substantial numbers of slaves through Dahomey. In the last decades of the century they again boycotted the Dahomean market. Dahomey therefore prospered as a middleman state only between c. 1748 and c. 1770.An examination of their eighteenth century trading suggests that the Dahomeans were a slave-raiding community whose members realised in 1727 that they would soon run out of fresh raiding grounds. They appear to have introduced their middleman policy in an attempt to ensure that they would continue to profit from slave trading even after they had ceased to be able to take large numbers of captives themselves. Although the policy was by no means a complete success, it was important in that it seems to have led the Dahomeans to begin placing garrisons in the territories they ravaged. It appears, in fact, to have been the pursuit of their middleman goals that led them to begin creating the often described nineteenth century ‘greater’ Dahomean state. The middleman programme ceased to be of much importance after c. 1818, when the fall of Oyo enabled the Dahomeans to resume raiding widely in unexploited territory.

Lampetra macrostoma, a New Species of Freshwater Parasitic Lamprey from the West Coast of Canada

1982 ◽  
Vol 39 (5) ◽  
pp. 736-747 ◽  
Author(s):  
Richard J. Beamish
Keyword(s):  
British Columbia ◽  
New Species ◽  
West Coast ◽  
Related Species ◽  
Salt Water ◽  
Vancouver Island ◽  
The West ◽  
Large Disc ◽  
Large Numbers ◽  
A New Species

Lampetra macrostoma n.sp., a freshwater parasitic lamprey, is distinguished from related species L. tridentata, L. lethophaga, L. folletti, L. minima, and L. similis by its parasitic habit and very large disc. Other characters distinguishing the species from L. tridentata are its longer prebranchial length, large eye, weakly pigmented velar tentacles, and its ability to remain in freshwater. The recently metamorphosed form readily survives in freshwater and probably is non-anadromous even though it can survive in salt water. The new species has been discovered in two lakes on Vancouver Island, British Columbia, Canada, where it attacks large numbers of resident salmonids. Because of its ability to survive and feed in freshwater, it poses a definite threat to freshwater fishes.Key words: lamprey, new species, non-anadromous lamprey, salmonid parasitism

Bass nurseries on the west coast of the U.K.

1986 ◽  
Vol 66 (2) ◽  
pp. 439-464 ◽  
Author(s):  
Donovan Kelley
Keyword(s):  
United Kingdom ◽  
West Coast ◽  
Dicentrarchus Labrax ◽  
The South ◽  
The West ◽  
The United Kingdom

INTRODUCTIONPresence of O-group bass, Dicentrarchus labrax (L.), has been recorded for a number of estuaries and tidal backwaters in the south of the United Kingdom, including the tidal Thames (Wheeler, 1979), the outer Thames at Southend (Murie, 1903), the Medway (Van den Broek, 1979), Langstone Harbour (Reay, 1973), the Dart (Dando & Demir, 1985), and the Tamar (Hartley, 1940). The author has found them, additionally, in Chichester Harbour and in the Cuckmere (Sussex), Teign and Tavy estuaries. Correspondents have reported them from the estuaries of the Blackwater (Cox), Crouch (Wiggins), Lynher (Gee) and Fal (Melhuish); also from the Fleet backwater in Dorset (Fear). It may be inferred that all estuaries and tidal backwaters on the south and south-east coasts of the U.K. constitute bass nurseries, in some degree.*

Sign in / Sign up

Export Citation Format

Share Document