دورية أكاديمية
Dolocretes in the uppermost Famennian to Mississippian siliciclastic deposits (Šķervelis Formation, Latvia)
| العنوان: | Dolocretes in the uppermost Famennian to Mississippian siliciclastic deposits (Šķervelis Formation, Latvia) |
|---|---|
| المؤلفون: | Daiga Pipira, Lauma Ķeipāne, Ģirts Stinkulis, Ilze Vircava, Tõnu Martma |
| المصدر: | Estonian Journal of Earth Sciences, Vol 72, Iss 2, Pp 211-225 (2023) |
| بيانات النشر: | Estonian Academy Publishers, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Geology |
| مصطلحات موضوعية: | palaeosol, fluvial deposits, root structures, c and o isotopes, devonian, baltic palaeobasin, Geology, QE1-996.5 |
| الوصف: | Siliciclastic deposits and dolostones of the Å Ä·ervelis Formation in southwestern Latvia were studied in outcrops, polished slabs, thin sections, and by geochemical methods, including stable isotope analyses. Siliciclastic fluvial deposits alternate with soils and carbonates. As the soil processes became dominant, up to 6 m thick dolocretes formed, but they still preserve remnant sedimentary structures and textures. The strong role of soil processes is indicated by the presence of ooids and pisoids together with fine laminar layers, chert and phosphatic inclusions, rhizoids, and stable isotope values. Peculiar vertical clay-dolomite structures, up to 1.7 m long, are root structures or their combination with Vertisol-like soil development. The extensive development of soil processes and formation of the vertical structures was stimulated by seasonally wet monsoon climate. The scarcity of fossils in the studied deposits does not allow their age to be determined precisely, but probably the thick dolocrete unit in the upper part of the studied succession formed during the end-Devonian glaciation and the period of related sea regression. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1736-4728 1736-7557 |
| العلاقة: | https://kirj.ee/wp-content/plugins/kirj/pub/earth-2-2023-211-225_20231022230741.pdfTest; https://doaj.org/toc/1736-4728Test; https://doaj.org/toc/1736-7557Test |
| DOI: | 10.3176/earth.2023.86 |
| الوصول الحر: | https://doaj.org/article/452bfaf4e8874df888df0ccd95df5201Test |
| رقم الانضمام: | edsdoj.452bfaf4e8874df888df0ccd95df5201 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 17364728 17367557 |
|---|---|
| DOI: | 10.3176/earth.2023.86 |