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
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
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
Ordovician chitinozoans and acritarchs from southern and southeastern Turkey [PDF]
Revue de Micropaléontologie, 2007 Revision of the lithostratigraphy of Ordovician deposits in southern and southeastern Turkey led to a re-evaluation of the age assignments of formations identified in the subsurface and at outcrop. Previous datings were based on macrofauna (mainly trilobites and graptolites).
Paris, F. +7 more
openaire +2 more sources
The lower boundary of the Haljala Regional Stage (Sandbian, Upper Ordovician) in Estonia [PDF]
Estonian Journal of Earth Sciences, 2020 Multi-proxy correlation is used to address the boundary of the Kukruse and Haljala regional stages across the Estonian part of the Baltoscandian Ordovician Palaeobasin.
Tõnn Paiste +3 more
doaj +1 more source
Palynostratigraphy and palaeoecology of the Niur Formation, Tikdar section, northwest of Kerman, Central Iran [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2019 Diverse, moderately to well-preserved palynomorphs including acritarchs (sensu stricto), prasinophytes cyst, chitinozoans, scolecodonts, and spores occur in some surface samples (90 meters thereof) of the Niur Formation (200 m thick) at the Tikdar ...
Hossein Hashemi +2 more
doaj +1 more source
The late Ordovician Soom Shale Lagerstȁtte: an extraordinary post-glacial fossil and sedimentary record [PDF]
, 2016 Fossils of the Late Ordovician Soom Shale Lagerstätte are characterized by exceptional preservation of their soft tissues in clay minerals. The low-diversity community lived in an unusual cold-water setting, dominated by anoxic bottom waters, in the ...
Browning, Claire +3 more
core +1 more source
First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia [PDF]
, 2008 New information on plants and palynomorphs from Angosto de Alarache, South Bolivia, is presented. The plant remains appear at the base of the section. Dichotomizing sterile forms are assigned to Hostinella sp.
Di Pasquo Lartigue, Maria +1 more
core +4 more sources
Biostratigraphy of the Ludlow chitinozoans from East Baltic drill cores [PDF]
Estonian Journal of Earth Sciences, 2009 The distribution of chitinozoans in the East Baltic Ludlow sequences was studied in the Ohesaare, Ventspils, Pavilosta, and Dubovskoye drill core sections.
Nestor, Viiu
doaj