Micropalaeontology reveals the source of building materials for a defensive earthwork (English Civil War?) at Wallingford Castle, Oxfordshire
Micropalaeontology reveals the source of building materials for a defensive earthwork (English Civil War?) at Wallingford Castle, Oxfordshire
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微古生物学揭示了牛津郡沃灵福德城堡防御土方工程（英国内战？）的建筑材料来源
DOI：
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发表时间：
2010
影响因子：
2
通讯作者：
N. Christie
中科院分区：
文献类型：
--
作者：
I. Wilkinson;A. Tasker;A. Gouldwell;M. Williams;M. Edgeworth;J. Zalasiewicz;N. Christie
在牛津郡南部的沃灵福德城堡，从用来建造一个假定的英国内战防御堡垒的沉积物中发现的微体化石，提供了白垩纪（最早的森诺曼纪）基底M的生物地层时代。曼泰利生物区在扶壁中使用的岩石-可能有一个炮台-因此可以追踪到海绿石泥灰岩成员，西梅尔伯里泥灰岩组的基础。这种岩石的供应可在城堡遗址或泰晤士河以东的Crowmarsh Gifford附近。微体化石为沃林福德遗址使用的建筑材料提供了一种独特的来源。虽然偶然发现可能是海绿石泥灰岩被使用的主要原因，但当压实时，它形成了一个坚固的，几乎像“路基”一样的基础，显然用于建造防御工程。事实上，海绿石泥灰岩在该地区广泛用于农业目的，其特性可能在当地众所周知。
Microfossils recovered from sediment used to construct a putative English Civil War defensive bastion at Wallingford Castle, south Oxfordshire, provide a biostratigraphical age of Cretaceous (earliest Cenomanian) basal M. mantelli Biozone. The rock used in the buttress – which may have housed a gun emplacement – can thus be tracked to the Glauconitic Marl Member, base of the West Melbury Marly Chalk Formation. A supply of this rock is available on the castle site or to the east of the River Thames near Crowmarsh Gifford. Microfossils provide a unique means to provenance construction materials used at the Wallingford site. While serendipity may have been the chief cause for use of the Glauconitic Marl, when compacted, it forms a strong, almost ‘road base’-like foundation that was clearly of use for constructing defensive works. Indeed, use of the Glauconitic Marl was widespread in the area for agricultural purposes and its properties may have been well-known locally.