Stratigraphy, palynology and organic geochemistry of the
Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit
(Porto–Tomar shear zone, W Portugal)

J 2011

Stratigraphy, palynology and organic geochemistry of the Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit (Porto–Tomar shear zone, W Portugal)

MACHADO, Gil; Eva GERŠLOVÁ; Milada VAVRDOVÁ; Deolinda FLORES; Paulo Emanuel FONSECA et al.

Základní údaje

Originální název

Stratigraphy, palynology and organic geochemistry of the Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit (Porto–Tomar shear zone, W Portugal)

Název česky

Statigrafie, palynologie a organická geochemie Devon-Mississippian metasedimentární Albergaria-a-Velha jednotky (Portugalsko)

Autoři

MACHADO, Gil; Eva GERŠLOVÁ; Milada VAVRDOVÁ; Deolinda FLORES; Paulo Emanuel FONSECA; Fernando ROCHA; Luís C. GAMA PEREIRA; Alberto GOMES; Madalena FONSECA a Helder I. CHAMINÉ

Vydání

Geological Quarterly, Polsko, Państwowy Instytut Geologiczny, 2011, 1641-7291

Další údaje

Typ výsledku

Článek v odborném periodiku

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 0.844

Označené pro přenos do RIV

UT WoS

000295383600005

Klíčová slova česky

Mississippian, Devon, Ossa–Morena Zone, Porto–Tomar zóna, palynologie, geochemie

Klíčová slova anglicky

Mississippian, Late Devonian, Ossa–Morena Zone, Porto–Tomar shear zone, palynology, organic geochemistry

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 5. 2014 09:30, doc. Mgr. Eva Geršlová, Ph.D.

Anotace

V originále

The Albergaria-a-Velha Unit is one of several tectonostratigraphic out-of-sequence units of the metamorphic belt associated with the Porto–Tomar shear zone (Ossa–Morena Zone, W Portugal). It is composed of considerably deformed – very low grade – metasediments, namely shales, siltstones and rare fine sandstones. In this work we present new sedimentological and biostratigraphical data that suggest the Albergaria-a-Velha Unit was deposited from the (?)early Frasnian to the Serpukhovian in a distal marine environment, where turbiditic and basinal sedimentation prevailed. Palynofacies analysis and lithological data point to a gradual increase of terrestrial input, suggesting a prograding system. Detrital framework data is indicative of a stable cratonic sediment source area composed of low grade metamorphic rocks. The timing of the onset of the Porto–Tomar shear zone activity and consequently its influence on the sedimentation of this unit is discussed. Organic petrology and geochemistry data indicate that the Albergaria-a-Velha Unit is within the dry gas window in terms of hydrocarbon generation ranges.

Citovat

MACHADO, Gil; Eva GERŠLOVÁ; Milada VAVRDOVÁ; Deolinda FLORES; Paulo Emanuel FONSECA; Fernando ROCHA; Luís C. GAMA PEREIRA; Alberto GOMES; Madalena FONSECA a Helder I. CHAMINÉ. Stratigraphy, palynology and organic geochemistry of the Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit (Porto–Tomar shear zone, W Portugal). Geological Quarterly. Polsko: Państwowy Instytut Geologiczny, 2011, roč. 55, č. 2, s. 139-164. ISSN 1641-7291.

@article{1181992,
   author = {Machado, Gil and Geršlová, Eva and Vavrdová, Milada and Flores, Deolinda and Fonseca, Paulo Emanuel and Rocha, Fernando and GAMA PEREIRA, Luís C. and Gomes, Alberto and Fonseca, Madalena and CHAMINÉ, Helder I.},
   article_location = {Polsko},
   article_number = {2},
   keywords = {Mississippian, Late Devonian, Ossa–Morena Zone, Porto–Tomar shear zone, palynology, organic geochemistry},
   issn = {1641-7291},
   journal = {Geological Quarterly},
   title = {Stratigraphy, palynology and organic geochemistry of the Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit (Porto–Tomar shear zone, W Portugal)},
   volume = {55},
   year = {2011}
}

TY  - JOUR
ID  - 1181992
AU  - Machado, Gil - Geršlová, Eva - Vavrdová, Milada - Flores, Deolinda - Fonseca, Paulo Emanuel - Rocha, Fernando - GAMA PEREIRA, Luís C. - Gomes, Alberto - Fonseca, Madalena - CHAMINÉ, Helder I.
PY  - 2011
TI  - Stratigraphy, palynology and organic geochemistry of the Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit (Porto–Tomar shear zone, W Portugal)
JF  - Geological Quarterly
VL  - 55
IS  - 2
SP  - 139-164
EP  - 139-164
PB  - Państwowy Instytut Geologiczny
SN  - 16417291
KW  - Mississippian, Late Devonian, Ossa–Morena Zone, Porto–Tomar shear zone, palynology, organic geochemistry
N2  - The Albergaria-a-Velha Unit is one of several tectonostratigraphic out-of-sequence units of the metamorphic belt associated with the Porto–Tomar shear zone (Ossa–Morena Zone, W Portugal). It is composed of considerably deformed – very low grade – metasediments, namely shales, siltstones and rare fine sandstones. In this work we present new sedimentological and biostratigraphical data that suggest the Albergaria-a-Velha Unit was deposited from the (?)early Frasnian to the Serpukhovian in a distal marine environment, where turbiditic and basinal sedimentation prevailed. Palynofacies analysis and lithological data point to a gradual increase of terrestrial input, suggesting a prograding system. Detrital framework data is indicative of a stable cratonic sediment source area composed of low grade metamorphic rocks. The timing of the onset of the Porto–Tomar shear zone activity and consequently its influence on the sedimentation of this unit is discussed. Organic petrology and geochemistry data indicate that the Albergaria-a-Velha Unit is within the dry gas window in terms of hydrocarbon generation ranges.
ER  -

MACHADO, Gil; Eva GERŠLOVÁ; Milada VAVRDOVÁ; Deolinda FLORES; Paulo Emanuel FONSECA; Fernando ROCHA; Luís C. GAMA PEREIRA; Alberto GOMES; Madalena FONSECA a Helder I. CHAMINÉ. Stratigraphy, palynology and organic geochemistry of the Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit (Porto–Tomar shear zone, W Portugal). \textit{Geological Quarterly}. Polsko: Państwowy Instytut Geologiczny, 2011, roč.~55, č.~2, s.~139-164. ISSN~1641-7291.

Přehled o publikaci