| Tartalom: |
http://www.cbga2014.org/doc/PCBGASSAV1.pdf |
| Archívum: |
MTA Könyvtár |
| Gyűjtemény: |
Status = Published
Type = Article
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| Cím: |
Dome-building volcanic activity in the Oas-Gutai Neogene Volcanic Area, Eastern Carpathians, Romania
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| Létrehozó: |
Kovács, M.
Fülöp, A.
Pécskay, Z.
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| Dátum: |
2014
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| Téma: |
QE05 Historical geology. Stratigraphy / Földtörténet, rétegtan
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| Tartalmi leírás: |
A complex dome-building volcanic activity
developed during a 5 Myr time interval (13.2-
8.0 Ma) in Oaş-Gutâi Mts., associated to the
intermediate volcanism of the Oaş-Gutâi Neogene
volcanic area (OG). Numerous domes were built
up in the entire volcanic region also triggering
both non-explosive and explosive fragmentation
volcanic processes. The volcanic forms consist
of extrusive domes, lava domes and dome-
flows/coulées and cryptodomes predominantly
as solitary domes, or compound domes and dome
complexes. The domes are comprised of andesites,
dacites and rhyolites (acid andesites and dacites
are prevalent). The volcanic rocks show a calc-
alkaline and medium to high-K character and
typical subduction-zone geochemical signatures.
Overall, either subaerial or subaqueous, the dome
growth and collapse associated with fragmental
explosive or non-explosive processes, was
dominantly responsible for most of the volcanic
products. Dome emplacement in submarine setting
is commonly associated with marginal auto-
brecciation, much subordinated explosive events
and subsequent resedimentation. Overall, the
dome-building volcanic activity in OG is recorded
to a monogenetic-type of volcanism. The series
of dome-building events which were triggered
and controlled by magma-mixing and -mingling
processes developed from time to time in different
locations of OG
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| Típus: |
Article
PeerReviewed
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| Formátum: |
text
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| Azonosító: |
Kovács, M. and Fülöp, A. and Pécskay, Z. (2014) Dome-building volcanic activity in the Oas-Gutai Neogene Volcanic Area, Eastern Carpathians, Romania. Buletini i Shkencave Gjeologjike, 1. pp. 230-233. ISSN 0254-5276, 2306-9600
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