Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Peep Männik"'
Autor:
Peep Männik, Jaak Nõlvak
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 66-69 (2023)
Conodonts and chitinozoans were studied from the Neitla section, which exposes the boundary between the Porkuni and Juuru regional stages. This level, although not proved biostratigraphically, has been traditionally considered to correspond to the Or
Externí odkaz:
https://doaj.org/article/be85657b1e814a0eb268f4c98a88a2e9
Publikováno v:
Estonian Journal of Earth Sciences, Vol 71, Iss 2, Pp 89-110 (2022)
The composition, diversity and distribution of various groups of organisms in the late Llandovery (Telychian) and early Wenlockian (Sheinwoodian) interval of the Pahapilli 675 and Kõrkküla 863 sections (western Estonia) were studied. Due to the
Externí odkaz:
https://doaj.org/article/5e04ff564fac4531801ebc05e6078a38
Autor:
Alicja Wudarska, Michael Wiedenbeck, Olle Hints, Peep Männik, Aivo Lepland, Michael M. Joachimski, Frédéric Couffignal, Maria Rosa Scicchitano, Franziska D. H. Wilke
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 166-0 (2023)
Reliable deep-time environmental and climate reconstructions are needed to understand the drivers of Earthâs system evolution over geological time. Palaeozoic temperature estimates, including reconstructions of the climate change through the Ordovic
Externí odkaz:
https://doaj.org/article/dca4273684e44f368e33a6846a7031dd
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 151-0 (2023)
The Late Ordovician mass extinction occurred during an icehouse interval, accompanied by the glaciation of the supercontinent Gondwana, which was located at the South Pole at that time. As suggested by sequence stratigraphy of near- and far-field sed
Externí odkaz:
https://doaj.org/article/064bc8cd05364c8f964f9d4cecbfd965
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 153-0 (2023)
One of the key objectives of the studies proposed by the Ordovician Subcommission is the improvement of regional stratigraphy for further advancements in global correlation. The results of this work can be found in numerous updates and reviews publis
Externí odkaz:
https://doaj.org/article/5a3c3cb648794d4886d723e030389f26
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 144-0 (2023)
Oxygen isotopes from bioapatite (conodonts) have been used for several decades to reconstruct the Palaeozoic climate history. During the Ordovician, conodont-based δ18Ophos studies have revealed a general cooling trend throughout the system. The
Externí odkaz:
https://doaj.org/article/93ae9fd7b6b44d91a1de2f214172f35d
Publikováno v:
Estonian Journal of Earth Sciences, Vol 69, Iss 2, Pp 76-90 (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. New biostratigraphic information on conodonts, chitinozoans and ostracods from th
Externí odkaz:
https://doaj.org/article/c2ae65700c5041dd82821d3a33935aef
Autor:
Peep Männik
Publikováno v:
Estonian Journal of Earth Sciences, Vol 66, Iss 1, Pp 1-12 (2017)
Conodonts from the type region of the Oandu Regional Stage (Katian, Upper Ordovician) in NE Estonia were studied. Here, the lower boundary of the stage corresponds to a discontinuity surface at the base of the Hirmuse Formation and, in conodont succe
Externí odkaz:
https://doaj.org/article/ba91cb2c4bc3489da6ae84abb3b8da11
Publikováno v:
Estonian Journal of Earth Sciences, Vol 65, Iss 2, Pp 85-97 (2016)
The succession of five formations (Auleliai, Vilučiai, Alvitas, Šakiai, Jakšiai) corresponding to the upper Sandbian and lower Katian in southern Lithuania is dated based on new bio- and chemostratigraphical data from the Pajevonys-13 core section
Externí odkaz:
https://doaj.org/article/b119fb53110c43a2be55b1c9c0e43f06
Publikováno v:
Estonian Journal of Earth Sciences, Vol 65, Iss 2, Pp 105-114 (2016)
The Kalana quarry in central Estonia is known for its exceptionally well-preserved non-calcified algal and other fossils. The interval with the fossil Konservat Lagerstätte in the Kalana section has previously been tentatively dated as early Aeronia
Externí odkaz:
https://doaj.org/article/291a2bde1729439e826cfa6f272960cb