Ordovician geology and stratigraphy of China: A synthesis [PDF]
Estonian Journal of Earth Sciences, 2023 China presently comprises several tectonic blocks and regions assembled over geological time and having independent histories. During the Ordovician, these blocks included South China, North China, Tarim, Qaidam, Junggar, Qiangtang-Qamdo, Lhasa and ...
Yuandong Zhang +9 more
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A new chitinozoan species from the Middle Ordovician of Estonia [PDF]
Estonian Journal of Earth Sciences, 2012 A new species Baltochitina delicata is formally defined. This rare species has been identified in the Aseri Regional Stage (Darriwilian) in North Estonian sections. The genus Baltochitina was known so far only by a single species B. nolvaki, which occurs
Jaak Nõlvak
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Chitinozoan biozonation and new lithostratigraphical data in the Upper Ordovician of the Fauquez and Asquempont areas (Brabant Massif, Belgium) [PDF]
, 2005 status ...
Storme, Annelies +4 more
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A summary of the Brazilian Paraná Basin Ordovician [PDF]
Estonian Journal of Earth Sciences, 2023 The study of the Ordovician of Paraná Basin culminated on the three-fold lithostratigraphic subdivision of the Rio Ivaà Group as follows: Alto Garças, Iapó and Vila Maria formations.
Carolina Zabini +11 more
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The Llandovery–Wenlock boundary interval in west-central continental Estonia: an example from the Suigu (S-3) core section [PDF]
Estonian Journal of Earth Sciences, 2014 A gap corresponding to several conodont and chitinozoan zones occurs in the Llandovery–Wenlock boundary interval in some sections in the western coastal region of Estonia and on islands in the Muhu Strait.
Peep Männik +5 more
doaj +1 more source
A bio- and chemostratigraphic search for the Mid-Ludfordian Carbon Isotope Excursion interval in the Ludlow of the Ohesaare core, Estonia [PDF]
Estonian Journal of Earth Sciences, 2022 For years, the Ohesaare core section and its rich fossil assemblages have enticed researchers to suggest various ideas about Silurian stratigraphy in the East Baltic despite several sedimentary gaps occurring through the Ludlow interval in particular ...
Dimitri Kaljo +4 more
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Devonian palynological assemblages from the San Antonio x-1 Borehole, Tarija Basin, northwestern Argentina [PDF]
, 2011 The palynological analysis of the 2548-3628 m interval of the San Antonio x-1 Borehole in northwestern Argentina is presented. The illustrated palynoflora is composed of 96 species represented by diverse palynological groups such as trilete spores and ...
Di Pasquo, M. M., Noetinger, S.
core +4 more sources
Chitinozoan dynamics and biostratigraphy in the Väo Formation (Darriwilian) of the Uuga Cliff, Pakri Peninsula, NW Estonia [PDF]
Estonian Journal of Earth Sciences, 2010 The distribution of chitinozoans in the Väo Formation (Lasnamägi and Uhaku regional stages, Darriwilian) of the Uuga Cliff, Pakri Peninsula, NW Estonia, was investigated from 62 samples.
Tammekänd, Mairy +2 more
doaj
A multiproxy study of the Puhmu core section (Estonia, Upper Ordovician): consequences for stratigraphy and environmental interpretation [PDF]
Estonian Journal of Earth Sciences, 2017 A multiproxy study of the Katian and Hirnantian in the Puhmu core in NE Estonia resulted in new data on chitinozoan and brachiopod biostratigraphy. Some mass occurrences of dasycladacean algae are tied to small early Katian ‘reefs’.
Dimitri Kaljo +3 more
doaj +1 more source
New insights into the chemical composition of chitinozoans [PDF]
Organic Geochemistry, 2007 The chemical structure of isolated chitinozoan specimens extracted from Early Silurian marine rocks has been investigated by micro-FTIR, laser micro-Raman spectroscopy and laser micropyrolysis-gas chromatography/mass spectrometry (LmPy- GC/MS). The samples were subjected to relatively low thermal stress as attested by several indices.
Jacob, Jérémy +6 more
openaire +2 more sources