By Ian West, Romsey, Version: 26th August 2018. Aerial photographs by courtesy of The Channel Coastal Observatory , National Cours de Paleontologie Stratigraphique… PDF Centre, Southampton. Photomicrographs of cellulose peels from the Mesozoic rocks of Dorset. Proceedings of the Geologists’ Association, 100, 161-174.
A new fossil genus of decapod Crustacea, belonging to the family Polychelidae is described from James Ross Island, Antarctic Peninsula. Formation in the Lower Cretaceous Kotick Point Formation. This is the first report of fossil Polychelidae in the southern hemisphere. Methods for simulating natural gamma ray and density wireline logs from measurements on outcrop exposures and samples: examples from the Upper Jurassic, England. Geological Society, London, Special Publication: Core-log Integration. Methods for simulating natural gamma ray and density wireline logs from measurements on outcrop exposures and rock samples have been implemented.
The signals have comparable amplitudes and resolution to wireline log signals, although the absolute values do not match precisely. The field gamma ray logs were measured on the outcrops at intervals of 30-45 cm using hand-held gamma ray spectrometers. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen, 159, 324-338. Fulford, with a palaeontological note by N.
Geology and hydrocarbon habitat in the Arabian Basin: the Mesozoic of the State of Qatar. The State of Qatar is situated in the southwestern Arabian Gulf and covers an area of about 12,000 sq. The land portion is formed by a large, broad arch, which is part of the regional, NE-SW trending Qatar-South Fars Arch, separating two Infracambrian salt basins. The Dukhan Field on the west coast of the Qatar Peninsula, with its reservoirs in Upper Jurassic limestones, was the first oil field discovered.
Hydrocarbon accumulations are widely dispersed throughout the stratigraphic column with production from Middle Jurassic to Middle Cretaceous strata. The most prolific reservoirs are in shelf carbonate sequences and minor accumulations occur in Albian clastic sediments. Seals, mainly anhydrite and shale, occur as formations of regional extent as well as intraformationally with smaller areal distributions. There are several stratigraphic intervals which contain source rocks or potential source rocks.
Upper Oxfordian – middle Kimmeridgian source rocks were formed in an extensive, starved basin during a period of sea-level rise. Both depositional environment and tectonic evolution through geologic time have influenced sedimentary facies and stratigraphic features, which controlled reservoir, source and seal characteristics and subsequent hydrocarbon generation, migration and entrapment. Phasal deposition in the Middle Purbeck Beds of Dorset. Report of the British Association for the Advancement of Science for 1931, 379-380. 381-383 in The Mirror of Literature, Amusement and Instruction, Saturday, June 9, 1827. This was reproduced by this journal from « The Topographer », No.
XXII, and that article, in turn, comes from the « Gentleman’s Magazine ». This cliff is composed of a blue slaty lime-stone , somewhat similar to the Charmouth Cliff, but exhibiting a more advanced state of decomposition, yet bearing a much stronger and closer affinity to the Kimeridge coal , and indeed may be fairly considered as the connecting link between them. The late Dr William Joscelyn Arkell of Oxford University, famous expert on and author of many publications on the Jurassic System. The Jurassic System in Great Britain.