On the Upper Ordovician unconformity in the Pyrenees: New evidence from the La Cerdanya area [PDF]
Geologica Acta, 2007 In recent years, contradictory reports about whether or not an unconformity exists at the base of the Upper Ordovician succession of the Pyrenees have been made.
J.M. Casas, Ó. Fernández
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Cornulitids from the Upper Ordovician of northwestern Russia [PDF]
Carnets de géologie (Notebooks on geology), 2017 Four cornulitid species occur in the Rakvere Regional Stage in NW Russia. The new species Conchicolites rossicus is here described; it is the earliest known Conchicolites from the Ordovician of Baltica. The new species has very small tubes with sharp, strong and regular annulations.
Olev Vinn, Anna Madison
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The Enigmatic Upper Ordovician of the Naturtejo UNESCO Global Geopark (Portugal) [PDF]
Geoconservation Research, 2021 Naturtejo UNESCO Global Geopark (Portugal) area includes deposits from the Neoproterozoic to the Quaternary. Despite its limited exposure area in major Variscan folded structures, the Ordovician series hosts some of its most famous geological heritage ...
Sofia Pereira +5 more
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Ordovician conodont diversity in the northern Baltic [PDF]
Estonian Journal of Earth Sciences, 2012 The diversity data presented in this paper are based on recently revised collections of conodonts from outcrops (northern Estonia) and core sections of Estonia and western and northern Latvia.
Peep Männik, Viive Viira
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δ13C chemostratigraphy in the upper Tremadocian through lower Katian (Ordovician) carbonate succession of the Siljan district, central Sweden [PDF]
Estonian Journal of Earth Sciences, 2014 Based on δ13C data from two drillcores recovered from the Siljan district, we present a first continuous carbon isotope record of the upper Tremadocian–lower Katian limestone succession of central Sweden.
Oliver Lehnert +4 more
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Niangziguan spring group in Shanxi Province and its water source
Carsologica Sinica, 2022 As a main natural discharge point of karst groundwater, Niangziguan spring group consists of 11 springs and is located in Niangziguan town, Yangquan City, Shanxi Province.
Chunlei TANG +8 more
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Paleomagnetism of Phanerozoic Geological Complexes in Tuva
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020 The authors have investigated palaeomagnetically the Ordovician, Upper Devonian and Lower Carboniferous strata in Tuva. In the rocks, postfolding secondary and prefolding magnetization components were isolated.
Коваленко Д.В. +3 more
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Integrated Upper Ordovician–lower Silurian biostratigraphy of the Grötlingbo-1 core section, Sweden
Gff, 2015 Peep Mannik +2 more
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Rifting and arc-related early Paleozoic volcanism along the North Gondwana margin: geochemical and geological evidence from Sardinia (Italy) [PDF]
, 2012 Three series of volcanic rocks accumulated during the Cambrian to Silurian in the metasediment-dominated Variscan basement of Sardinia. They provide a record of the changing geodynamic setting of the North Gondwana margin between Upper Cambrian and ...
BUZZI L +3 more
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Lithosphere, 2022 Amalgamation of the Yangtze and Cathaysia blocks in the context of Gondwana assembly in the early Paleozoic has been addressed for decades, but the far-field effects on the Yangtze Block during the amalgamation remain unclear.
Hao Tang +8 more
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