Depositional environments of the Jurassic Maghara main coal seam in north central Sinai, Egypt

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10388236" target="_blank" >RIV/00216208:11310/18:10388236 - isvavai.cz</a>

Alternative codes found

RIV/67985891:_____/18:00496698

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1464343X18300256?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1464343X18300256?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jafrearsci.2018.01.017" target="_blank" >10.1016/j.jafrearsci.2018.01.017</a>

Result language

angličtina

Original language name

Depositional environments of the Jurassic Maghara main coal seam in north central Sinai, Egypt

Original language description

Twenty-eight channel samples with a cumulative thickness of about 4m collected from three sections of the Maghara main coal seam in the middle Jurassic Safa Formation have been studied for their lithotype and maceral compositions to reconstruct the character of peat swamp, its hydrological regime and the predominating type of vegetation. Dominantly vitrinite composition of coal and extremely low fire- and oxidation-borne inertinite content, together with high Gelification Indices imply predomination of waterlogged anoxic conditions in the precursing mire with water tables mostly above the peat surface throughout most of the time during peat swamp formation. Increases in collotelinite contents and Tissue Preservation Index up the section, followed by a reversal trend in upper third of the coal section, further accompanied by a reversal trend in collodetrinite, liptodetrinite, alginite, sporinite and clay contents records a transition from dominately limnotelmatic and limnic at the lower part to dominately limnotelmatic with increase telmatic condition achieved in the middle part of coal. At the upper part of coal seam an opposite trend marks the return to limnic and limnotelmatic conditions in the final phases of peat swamp history and its subsequent inundation. The proportion of arborescent (mostly coniferous) and herbaceous vegetation varied throughout the section of the coal with tendency of increasing density of arborescent vegetation to the middle part of the coal seam section. The intercalation of coal in shallow marine strata implies that peat swamp precursor formed in a coastal setting, probably on delta plain or lagoon. Its formation was controlled by water table changes driven by sea level fluctuations that created an accommodation space necessary for preservation of peat.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA16-24062S" target="_blank" >GA16-24062S: Sedimentary cyclicity in Late Paleozoic basins: understanding the role of hinterland processes on cyclic deposition</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Journal of African Earth Sciences

ISSN

1464-343X

e-ISSN

—

Volume of the periodical

140

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

241-255

UT code for WoS article

000427999500017

EID of the result in the Scopus database

2-s2.0-85044631045