Results 81 to 90 of about 64,478 (218)

The Boundary Between Middle and Upper Jurassic [PDF]

open access: yesGeological Magazine, 1956
The wisdom of placing the middle Jurassic-upper Jurassic boundary at the Callovian-Oxfordian line (rather than between the Bathonian and Callovian), as was done in Arkell9s recent book "Jurassic geology of the world" is questioned (by Melville) and reconfirmed (by Arkell).
openaire   +1 more source

Geochemistry and origin of organic-rich sediment veins in fractured granitic basement, Helmsdale, Sutherlandshire, UK [PDF]

open access: yes, 2017
Acknowledgements MB is in receipt of a PhD studentship from the Petroleum Technology Development Fund of Nigeria. LB is supported by NERC grant NE/M010953/1. C. Taylor, W. Ritchie and J. Johnston provided skilled technical support.
Baba, Mas'Ud   +3 more
core   +1 more source

Sedimentology of the Triassic–Jurassic boundary beds in Pinhay Bay (Devon, SW England) [PDF]

open access: yes, 2001
Sedimentology of the Triassic–Jurassic boundary beds in Pinhay Bay(Devon, SW England). Proceedings of the Geologists’ Association, 112. 349–360. New exposures in Pinhay Bay (SE Devon) of the White Lias (Langport Member of the Lilstock Formation)and ...
Wignall, P.B.
core   +1 more source

Revisiting the Jurassic Geomagnetic Reversal recorded in the Lesotho Basalt (Southern Africa)

open access: yes, 2003
We carried out a detailed and continuous paleomagnetic sampling of the reversed to normal geomagnetic transition recorded by some 60 consecutive flow units near the base of the Lesotho Basalt (183  1 Ma).
Camps   +12 more
core   +2 more sources

Inland extent of the Weddell Sea Rift imaged by new aerogeophysical data [PDF]

open access: yes, 2012
Peer ...
Bingham, Robert George   +8 more
core   +1 more source

The Apulia Carbonate Platform—Gargano Promontory, Italy (Upper Jurassic–Eocene)

open access: yesAAPG Bulletin, 2017
The Upper Jurassic to Eocene carbonate rocks of the Gargano Promontory belong to the Apulia Carbonate Platform (ACP) and provide a spectacular and complete succession of slope and base-of-slope resedimented gravity flow carbonates with preserved reservoir properties and, with its coeval carbonate platform, displaying various tectonostratigraphic ...
MORSILLI, Michele   +5 more
openaire   +2 more sources

The thermal history of the Western Irish onshore [PDF]

open access: yes, 2014
We present here a low-temperature thermochronological study that combines the apatite fission-track and (U + Th)/He dating methods with a pseudo-vertical sampling approach to generate continuous and well-constrained temperature–time histories from the ...
Chew, David   +2 more
core   +2 more sources

Upper Jurassic Fossils from Ellsworth Land, West Antarctica, and notes on upper Jurassic Biogeography of the South Pacific Region [PDF]

open access: yesNew Zealand Journal of Geology and Geophysics, 1967
Abstract Fossils from Lyon Nunataks (74° 52′ S, 74° 02′ W) are described: Conodicoelites spp., Rotularia sp. indet., indet. pectinacean: cf. Entolium, and Variamussium lyonensis sp. nov. Upper Jurassic (?Lower Kimmeridgian) age. The Conodicoelites spp. have strong affinities with those of the New Zealand Lower Kimmeridgian.
openaire   +1 more source

Strontium isotope stratigraphy: LOWESS version 3: best fit to the marine Sr-isotope curve for 0-509 Ma and accompanying look-up table for deriving numerical age [PDF]

open access: yes, 2001
An improved and updated version of the statistical LOWESS fit to the marine 87Sr/86Sr record and a revised look-up table (V3:10/99; available from j.mcarthur@ucl.ac.uk) based upon it enables straightforward conversion of 87Sr/86Sr to numerical age, and ...
Bailey, T.R.   +2 more
core  

Occurrence, origin and possible accumulationsof oil in the SW part of the Carpathian Foredeep (SE Moravia - Czechia) [PDF]

open access: yesActa Montanistica Slovaca, 2006
The drilling exploration in the SW part of the Carpathian Foredeep, in the vicinity of the gas deposit and UGS Dolní Dunajovice encountered the influx of gas, water and oil in Carpathian, Eggenburgian sandstones and Upper Jurassic carbonates.
Pavel Čížek   +2 more
doaj  

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