The coastal landslides of Shetland

Little is known of hard-rock coastal landsliding in Scotland. We identify 128 individual coastal landslides or landslide complexes >50 m wide along the coasts of Shetland. Most are apparently translational slides characterized by headscarps, displaced blocks and/or debris runout, but 13 deep-seated failures with tension cracks up to 200 m inland from cliff crests were also identified. Thirty-one sites exhibit evidence of at least localized recent activity. Landslide distribution is primarily determined by the distribution of coastal cliffs >30 m high, and they are preferentially developed on metasedimentary rocks. Analysis of 16 landslides on Fetlar (NE Shetland) indicates that most are translational dip-slip failures; 3 represent deep-seated failures and several exhibit active frontal erosion attributable to basal sapping by storm waves. As these landslides terminate in shallow water, failure was probably initiated when rising sea level resulted in footslope erosion and upslope propagation of instability, causing downslope displacement of landslide blocks on upper slopes. ¹⁰Be exposure dating of two headscarps yielded ages of 4.8?±?0.2 ka and 4.4?±?0.2 ka, consistent with the onset of footslope erosion as sea level rose. Our results suggest that landslides have played a hitherto undocumented but important role in retreat of cliffed coastlines in Scotland.     

The importance of difference in the making of transnationality: biographies and networks of the Benedictine mission in Tanganyika (1922–65)

The Missionary Benedictines of Saint Ottilien were the first Roman Catholic mission house in imperial Germany. During the heyday of European imperialisms, colonialisms and Christian missions the monastic community began its engagement in ‘German East Africa’. To enable and promote its proselytization efforts in the imperial colony until the end of the Great War, the Missionary Benedictines had to respond to shifting political conditions and to rearrange their networks as and when required. This orientation became even more pronounced during the renewal of the Benedictine Mission in the British mandated territory of Tanganyika up until the Second Vatican Council and the political independence of Tanzania. From 1922 to 1965 at least 379 members of the Congregation lived and worked in Tanganyika. Their biographies were closely linked to the complex transboundary system of their religious community. This article will portray them as a highly institutionalized group of transnational actors. It argues that to maintain its activities and organizational structures, the leaders of the Benedictine Mission established a dynamic multi-level network connecting a variety of scales, spaces and actors. To ensure its continued existence under constantly changing conditions they constituted a hierarchic system of difference and diversity.