Zobrazeno 1 - 10
of 89
pro vyhledávání: '"bioclasts"'
Publikováno v:
Shiyou shiyan dizhi, Vol 46, Iss 6, Pp 1157-1165 (2024)
Using techniques such as ultra-microscopic organic petrology, the study explores the relationship between bioclasts such as siliceous and calcareous skeleton-wall-shell organism and high-quality hydrocarbon source rocks in terms of their biomolecular
Externí odkaz:
https://doaj.org/article/04a95bd5a8024e8bb9816993fb5f4b31
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:
Monia Renzi, Paolo Pastorino, Francesca Provenza, Serena Anselmi, Antonietta Specchiulli, Andrea Cavallo
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 1, p 66 (2023)
Environmental diagnostics are commonly used to identify anthropogenic influences in various environmental settings. However, the use of a single survey technique is limiting and leads to an incomplete and often inaccurate picture of reality. In this
Externí odkaz:
https://doaj.org/article/6bf9031de9cd4aab9f2c2081392b52bb
Autor:
Franck Lavigne, Julie Morin, Patrick Wassmer, Olivier Weller, Taaniela Kula, Ana V. Maea, Karim Kelfoun, Fatima Mokadem, Raphael Paris, Mukhamad Ngainul Malawani, Audrey Faral, Mhammed Benbakkar, Ségolène Saulnier-Copard, Céline M. Vidal, Tu’I’ahai Tu’I’afitu, Fuka Kitekei’aho, Martine Trautmann, Christopher Gomez
Publikováno v:
Frontiers in Earth Science, Vol 9 (2021)
The pre-colonial history (i.e. before the 16th century) of Tonga and West Polynesia still suffers from major gaps despite significant scientific advances in recent years, particularly in the field of archaeology. By the 14th century, the powerful Tu
Externí odkaz:
https://doaj.org/article/2ddbe7df1d7342ca8c0d574776d4b8d5
Publikováno v:
Brazilian Journal of Geology, Vol 50, Iss 4 (2020)
Abstract The Morro do Chaves Formation (Barremian-Aptian of the Sergipe-Alagoas Basin) presents a sedimentary succession of approximately 150 m of thickness, composed of coquinas. Despite the sedimentological, stratigraphic, and petrophysical studies
Externí odkaz:
https://doaj.org/article/0d31f452e26142b7b1ddd663ab3652f8
Publikováno v:
Øhlenschlæger, A, Milan, J, Nielsen, A T & Thibault, N 2022, ' The mobile domicile boring Trypanites mobilis revisited-new observations and implications for ecosystem recovery following the Cretaceous-Palaeogene mass extinction ', Lethaia: An International Journal of Palaeontology and Stratigraphy, vol. 55, no. 3 . https://doi.org/10.18261/let.55.3.2
Cylindrical borings assigned to ichnospecies Trypanites mobilis Neumann, Wisshak & Bromley, 2008, are common in bulbous echinoid spines (Tylocidaris baltica and Ty. vexilifera) and globular calcareous sponges (Porosphaera globularis) from the Maastri
Autor:
Percy van Keulen, Freek Rhebergen
Publikováno v:
Estonian Journal of Earth Sciences, Vol 66, Iss 4, Pp 198-219 (2017)
This study seeks to describe ‘baksteenkalk’, an erratic silicified bioclastic carbonate of the Upper Sandbian from the eastern part of the Netherlands. To date, baksteenkalk has received little attention among palaeontologists. This is to be regr
Externí odkaz:
https://doaj.org/article/c72de72f1bd74b64a6dba9efc68b2923
Autor:
G. Shanmugam
Publikováno v:
Journal of Palaeogeography, Vol 6, Iss 3, Pp 224-234 (2017)
This discussion of a paper by Van Loon et al. (2016), published in the Journal of Palaeogeography (2016, 5(4), 381–390), is aimed at illustrating that there are fundamental deficiencies, which include (1) incomplete etymological reasoning for propo
Externí odkaz:
https://doaj.org/article/f2223edcbf4c462dbc24daee9b283571
Autor:
Zeng-Zhao Feng
Publikováno v:
Journal of Palaeogeography, Vol 6, Iss 3, Pp 219-223 (2017)
Van Loon et al.'s paper “The response of stromatolites to seismic shocks: Tomboliths from the Palaeoproterozoic Chaibasa Formation, E India” with a new term “tomboliths” and original viewpoints should be published, but some contents need to b
Externí odkaz:
https://doaj.org/article/ab07247e4b9f488d8ae090ba29790022
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