Geological notes and local details for 1:10 000 sheet TM 49 NW : Thurlton : part of 1:50 000 sheet 162 (Great Yarmouth)

This report describes the geology of the 1:10,000 sheet TM 49 NW (Figure 1) which is included i n the l:5O,OOO Great Yarmouth (162) geological map. The area was first surveyed by J H Blake and C Reid as part of the Old Series oneinch sheets 67 SE (JHB) and 66 SE (CR/JHB) published i n 1882 and 1881 respectively. The primary six-inch survey of the Thurlton area was made by P M Hopson in 1985 under the direction of D r R G Thurrell, Programme Manager, Eastern England Land Survey. Uncoloured dye-line copies of the map can be obtained from the British Geological Survey, Keyworth. The area described covers part of the broad valley near the confluence of the lower Yare and Waveney rivers, together with some gently undulating country which rises towards the south west to a plateau founded on boulder clay

A geological fence diagram for England and Wales

This report contains a brief description of the data and methodology used to compile the National Geological Fence Diagram (NGFD). The NGFD comprises a network of intersecting geological cross-sections covering England and Wales, to a minimum depth of 1 km and a total section length of approximately 5,500 km. It was compiled by the British Geological Survey (BGS) on behalf of the Environment Agency (EA) and is based upon lines of section agreed between both parties at the inception of the project. The model includes generalised bedrock strata based principally on the BGS 1:625 000 scale digital geological data and superficial deposits greater than 10m in thickness. Additional sources of model data were also considered, largely taken from published BGS data holdings. In total 41 cross-sections were constructed and geologically correlated within the GSI3D software

A geological model of the chalk of East Kent

This report describes the geological modelling of the Chalk in the North Downs of East Kent, within the catchment of River Great Stour and eastwards to the coast, including the Isle of Thanet. This work was funded by the Environment Agency to support investigations of the local hydrogeology and thereby to enhance catchment management. The whole area is underlain by the Upper Cretaceous Chalk Group, with the Palaeogene succession of the Thanet Sand Formation, the Lambeth Group and the Thames Group overlying it in the northern and central eastern parts. The project included a desk study revision of the Chalk of the North Downs, using the new Chalk lithostratigraphy. The revisions to the geology are shown on the 1:50 000 scale geological map which accompanies this report. Together with evidence from boreholes and from seismic surveys, the new outcrop patterns have been incorporated into a geological model, using both computer software (EarthVision) and manual methods. The introduction describes the background to the project. The second chapter describes the sources for the data used in the model: published and unpublished geological maps, borehole records (both lithological and geophysical), seismic surveys, biostratigraphic records, digital topographic information, and the published literature. Each Chalk formation present in the area is then briefly described in the third chapter, noting its relationship to the older lithostratigraphic divisions, and to biostratigraphic zones. The local Chalk succession extends from the base of the Chalk Group to the Newhaven Chalk Formation, here represented by the Margate Chalk Member. Evidence for the thickness of each formation is reviewed. The early Palaeogene formations (the Thanet Sand, Upnor, Harwich and London Clay formations) are also briefly described (Chapter 4) and the local superficial deposits mentioned, with references to detailed descriptions (Chapter 5). Apart from minor adjustments to the outcrop of the basal Palaeogene surface, no revision of these formations was done for this study

Paleobiology of titanosaurs: reproduction, development, histology, pneumaticity, locomotion and neuroanatomy from the South American fossil record

Fil: García, Rodolfo A.. Instituto de Investigación en Paleobiología y Geología. Museo Provincial Carlos Ameghino. Cipolletti; ArgentinaFil: Salgado, Leonardo. Instituto de Investigación en Paleobiología y Geología. General Roca. Río Negro; ArgentinaFil: Fernández, Mariela. Inibioma-Centro Regional Universitario Bariloche. Bariloche. Río Negro; ArgentinaFil: Cerda, Ignacio A.. Instituto de Investigación en Paleobiología y Geología. Museo Provincial Carlos Ameghino. Cipolletti; ArgentinaFil: Carabajal, Ariana Paulina. Museo Carmen Funes. Plaza Huincul. Neuquén; ArgentinaFil: Otero, Alejandro. Museo de La Plata. Universidad Nacional de La Plata; ArgentinaFil: Coria, Rodolfo A.. Instituto de Paleobiología y Geología. Universidad Nacional de Río Negro. Neuquén; ArgentinaFil: Fiorelli, Lucas E.. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica. Anillaco. La Rioja; Argentin

The geology of the Portsmouth region : a perspective of the Wessex and Hampshire Basins

This paper results from the scene-setting presentation given at the opening of the 16th Extractive Industry Geology Conference at Portsmouth University in September 2010. The geology and structure of the Hampshire region is, at first glance, simple and laid open for inspection in rolling countryside with a subdued topography of scarps and long shallow dip-slopes of the Chalk downlands and broad synclines preserving Palaeogene strata, all of which are cross-cut with languid streams in wide gravelfilled valleys. However, the structure of the underlying and co-extensive Wessex Basin, with its Permian to Cretaceous infill, up to 3.5 km thick in places, provides the grain of the country we see today. This Wessex Basin-infilling tells a story of massive tectonic extension and normal faulting, related to the opening of the proto-Atlantic, and an equally massive phase of tectonic compression and reactivation of some of the faults in a reverse sense, as the result of the later collision (principally of Miocene age) of the African and European tectonic plates (the Alpine Orogeny). This extensive geological history relates to an imprint, preserved in a Palaeozoic basement, of deep-seated thrusting created at the initiation of the supercontinent Pangea (when the continental masses of Gondwana and Laurentia collided during the Variscan Orogeny). It is the break-up of Pangea that provides the depositional accommodation space for the Mesozoic sediments and through time has given the continental plates we are familiar with today

The St George's Down : the plateau gravel : a preliminary discussion

The British Geological Survey is currently completing a new survey of the whole of the Isle of Wight at the 1:10 000 scale. The team has been surveying in short sessions since the autumn of 2006 with a final session to be completed in April and May 2009. This survey will provide a modern appraisal of the Bedrock and Superficial Deposits and publish a new 1:50 000 scale geological map and supporting texts for this classic area of British Geology. Quite obviously the published interpretation of the Superficial Deposits on the island is at a very basic level (BGS, 1976; White, 1921 [1994]) reflecting the lack of study that most of the deposits have had since the original surveys. It is to be hoped that the current survey, and the melding of this data with the studies already undertaken in the wider community, will go a long way in unravelling the Quaternary history of the Island

The sand and gravel resources of the country around Nayland, Suffolk : description of 1:25,000 resource sheet TL 93

The geological maps of the Institute of Geological Sciences, pre-existing borehole information, and 111 boreholes drilled for the Industrial Minerals Assessment Unit form the basis of the assessment of the sand and gravel resources of the country around Nayland, Suffolk. All the deposits in the district that might be potentially workable for sand and gravel have been investigated and a simple statistical method has been used to estimate the volume. The reliability of the volume estimates is given at the symmetrical 95 per cent probability level. The 1:25 000 map is divided into 8 resource blocks, containing between 3.2 and and 14.5 km' of sand and gravel. For each block the geology of the deposits is described, and the mineral-bearing area, the mean thickness of overburden and mineral and the mean gradings are stated. Detailed borehole data are also given. The geology, the position of the boreholes and the outlines of the resource blocks are shown on the accompanying map

The sand and gravel resources of the country around Sudbury, Suffolk : description of 1:25,000 sheet TL 84

The geological maps of the Institute of Geological Sciences, pre-existing borehole information, and 93 boreholes drilled for the Industrial Minerals Assessment Unit form the basis of the assessment of the sand and gravel resources of the country around Sudbury, Suffolk. All the deposits in the district that might be potentially workable for sand and gravel have been investigated and a simple statistical method has been used to estimate the volume. The reliability of the volume estimates is given at the symmetrical 95 per cent probability level. The assessed area is divided into six resource blocks, containing between 5.4 and 12.6 km2 of sand and gravel. For each block the geology of the deposits is described, and the mineral-bearing area, the mean thickness of overburden and mineral and the mean gradings are stated. Detailed borehole data are also given. The geology, the position of the boreholes and the outlines of the resource blocks are shown on the accompanying map

The sand and gravel resources of the country north of Harlow, Essex : description of 1:25,000 resource sheet TL 41

The geological maps of the Institute of Geological Sciences, pre-existing borehole information and 98 boreholes drilled for the Industrial Minerals Assessment Unit, form the basis of the assessment of sand and gravel in the area north of Harlow, Essex. All deposits in the area which might be potentially workable for sand and gravel have been investigated and a simple statistical method has been used to estimate the volume. The reliability of the volume estimates is given at the 95 per cent probability level. The l :25 000 map is divided into five resource blocks containing between 8.3 and 14.2 km2 of sand and gravel. For each block the geology of the deposits is described and the mineral-bearing area, the mean thickness of overburden and mineral, and the mean gradings are stated. Detailed borehole data are also given. The geology, the position of the boreholes and the outlines of the resource blocks are shown on the accompanying map