19 research outputs found
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sources for the data used in the model: published and unpublished geological maps, borehole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: GarcĂa, Rodolfo A.. Instituto de InvestigaciĂłn en PaleobiologĂa y GeologĂa. Museo Provincial Carlos Ameghino. Cipolletti; ArgentinaFil: Salgado, Leonardo. Instituto de InvestigaciĂłn en PaleobiologĂa y GeologĂa. General Roca. RĂo Negro; ArgentinaFil: Fernández, Mariela. Inibioma-Centro Regional Universitario Bariloche. Bariloche. RĂo Negro; ArgentinaFil: Cerda, Ignacio A.. Instituto de InvestigaciĂłn en PaleobiologĂa y GeologĂa. Museo Provincial Carlos Ameghino. Cipolletti; ArgentinaFil: Carabajal, Ariana Paulina. Museo Carmen Funes. Plaza Huincul. NeuquĂ©n; ArgentinaFil: Otero, Alejandro. Museo de La Plata. Universidad Nacional de La Plata; ArgentinaFil: Coria, Rodolfo A.. Instituto de PaleobiologĂa y GeologĂa. Universidad Nacional de RĂo Negro. NeuquĂ©n; ArgentinaFil: Fiorelli, Lucas E.. Centro Regional de Investigaciones CientĂficas y Transferencia TecnolĂłgica. Anillaco. La Rioja; Argentin