New floras of the Libkovice Member from the Libouš Mine (early Miocene, Most Basin)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11410%2F21%3A10428491" target="_blank" >RIV/00216208:11410/21:10428491 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/21:10428491

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4f4ssbVZlO" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=4f4ssbVZlO</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3140/zpravy.geol.2021.07" target="_blank" >10.3140/zpravy.geol.2021.07</a>

Result language

čeština

Original language name

Nová flóra z libkovických vrstev v lomu Libouš (sp. miocén, mostecká pánev)

Original language description

Three new early Miocene fossiliferous horizons were found in the Libouš Mine near Chomutov in the Most Basin. The Libkovice Member of the Most Formation was originally considered as devoid of fossils, apart from rare findings in drillcores. The new fossiliferous horizons within lacustrine clay sediments can be precisely dated (17.0-17.3 Ma) thanks to their position close to the phosphate-bearing horizons C1-C3 (Fig. 2,3), which allow a broad correlation across the Most Basin (Fig. 1). Newly recognized floras are characterized by common early Miocene representatives of Betulaceae, Myricaceae, Ulmaceae, Aceraceae, Rhamnaceae, Cupresaceae and Pinaceae known from the Most Basin, with possible indication of a warming trend towards the upper fossiliferous/crandallite horizon documented by the presence of thermophilic elements such as Cedrelospermum sp., Bumelia oreadum and Leguminosae gen. et. sp. indet (Fig. 4). This possible warming trend in the upper part of the Libkovice Member represents the beginning of the Middle Miocene Climatic Optimum, which was confirmed by previous researches. The vegetation analysis distinguished several plant assemblages of azonal riparian forest, mixed swamp forest, and zonal mesophytic evergreen broad-leaved forest mixed with pine stands. The results of the Integrated Plant Record vegetation analysis demonstrate, that the vegetation corresponds to the Mixed Mesophytic Forest vegetation type with a close affinity to the living plant assemblage of Fagus crenata growing on Mt. Fuji in Japan.

Czech name

Nová flóra z libkovických vrstev v lomu Libouš (sp. miocén, mostecká pánev)

Czech description

Three new early Miocene fossiliferous horizons were found in the Libouš Mine near Chomutov in the Most Basin. The Libkovice Member of the Most Formation was originally considered as devoid of fossils, apart from rare findings in drillcores. The new fossiliferous horizons within lacustrine clay sediments can be precisely dated (17.0-17.3 Ma) thanks to their position close to the phosphate-bearing horizons C1-C3 (Fig. 2,3), which allow a broad correlation across the Most Basin (Fig. 1). Newly recognized floras are characterized by common early Miocene representatives of Betulaceae, Myricaceae, Ulmaceae, Aceraceae, Rhamnaceae, Cupresaceae and Pinaceae known from the Most Basin, with possible indication of a warming trend towards the upper fossiliferous/crandallite horizon documented by the presence of thermophilic elements such as Cedrelospermum sp., Bumelia oreadum and Leguminosae gen. et. sp. indet (Fig. 4). This possible warming trend in the upper part of the Libkovice Member represents the beginning of the Middle Miocene Climatic Optimum, which was confirmed by previous researches. The vegetation analysis distinguished several plant assemblages of azonal riparian forest, mixed swamp forest, and zonal mesophytic evergreen broad-leaved forest mixed with pine stands. The results of the Integrated Plant Record vegetation analysis demonstrate, that the vegetation corresponds to the Mixed Mesophytic Forest vegetation type with a close affinity to the living plant assemblage of Fagus crenata growing on Mt. Fuji in Japan.

Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

50301 - Education, general; including training, pedagogy, didactics [and education systems]

Project

<a href="/en/project/GA18-25057S" target="_blank" >GA18-25057S: Quantifying openness of vegetation by the Integrated Plant Record vegetation analysis</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geoscience Research Reports [online]

ISSN

2336-5757

e-ISSN

—

Volume of the periodical

54

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

8

Pages from-to

63-70

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85117412842