Conodont biostratigraphy in the Middle–Upper Ordovician boundary beds of Estonia [PDF]
Estonian Journal of Earth Sciences, 2008 Conodonts of the uppermost Uhaku, the Kukruse, and the lower Haljala stages (uppermost Darriwilian and lower Sandbian) of Estonia are discussed. The distribution of conodonts within the Pygodus serra, P.
Viira, Viive
doaj
A mineral reconnaissance survey of the Abington-Biggar-Moffat-area, south-central Scotland [PDF]
, 1979 Panned heavy mineral concentrates, mostly obtained from stream sediments, were collected from 195 sites in the Abington-Biggar-Moffat area. The project area, which lies immediately east of the formerly important mining district of Wanlockhead ...
Dawson, J., Floyd, J.D., Phillip, P.R.
core
, 2014 The δ 13 C isotope data from the Tartu-453 core section in southern Estonia enabled creation of a continuous Ordovician carbon isotope record, ranging from the Floian to the end of the Hirnantian.
H. Bauert +3 more
semanticscholar +1 more source
Geochemical and Geological Characteristics of the Upper Ordovician-Lower Silurian Shales in the Upper Yangtze Basin, South China: Implication for the Shale Gas Exploration. [PDF]
ACS Omega, 2020 Sun YY +9 more
europepmc +1 more source
Bucaniidae (Gastropoda) from the Upper Ordovician of Norway
Norsk Geologisk Tidsskrift, 1999 Fourteen species of bellerophontoid gastropods of the Family Bucaniidae are described from the Upper Ordovician succession of the Oslo Region, Norway. Bucania sp. is compared with several species of Bucania that stand out morphologically by having a median dorsal carina, moderate to wide umbilici and an ornamentation consisting of crenulated growth ...
openaire +1 more source
A geological fence diagram for England and Wales [PDF]
, 2012 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
Ambrose, K. +7 more
core
Rock magnetism of the Upper Ordovician Zhaolaoyu Formation of the southern Ordos Basin
地质科技通报Objective Palaeomagnetic methods can be used to quantitatively constrain the Early Palaeozoic palaeo-position of the North China Block (NCB), which provides a crucial scientific basis for researching the evolution of the Proto-Tethyan Orogeny and the ...
Shuqi LAN +14 more
doaj +1 more source
地质科技通报Objective The Well Tashen 5 that was completed in 2021 has a burial depth of 9 017 m and is currently the deepest drilling well in Asia. It is also the first hydrocarbon breakthrough in the dolomite sectionof Upper Sinian at a depth of 8 780-8 840 m in ...
Mingxia LUO +4 more
doaj +1 more source
High palaeolatitude (Hodh, Mauritania) recovery of graptolite faunas after the Hirnantian (end Ordovician) extinction event [PDF]
Marine shales directly overlying lower Hirnantian (uppermost Ordovician) glacially related sediments in Mauritania (North-West Africa) have produced a rich graptolite fauna spanning the Ordovician-Silurian boundary in an area of high palaeolatitude.
Deynoux, M. +2 more
core
Exploration for volcanogenic sulphide mineralisation at Benglog, north Wales [PDF]
, 1983 Exploration for volcanogenic sulphide mineralisation around Benglog is one of three investigations designed to assess the metallogenic potential of the Ordovician Aran Volcanic Group.
Allen, P.M. +4 more
core