Propagation of hotspot volcanism driven flexure in oceanic crust – 85°E Ridge case study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00096370" target="_blank" >RIV/00216224:14310/17:00096370 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.marpetgeo.2017.01.021" target="_blank" >http://dx.doi.org/10.1016/j.marpetgeo.2017.01.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.marpetgeo.2017.01.021" target="_blank" >10.1016/j.marpetgeo.2017.01.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Propagation of hotspot volcanism driven flexure in oceanic crust – 85°E Ridge case study

Popis výsledku v původním jazyce

The study focuses on the flexural down-warping of oceanic crust related to the Early Cretaceous hotspot volcanic chain in offshore East India, drawing from robust reflection seismic coverage of the 85°E Ridge and associated moats and arches. Seismic data image three moat-filling units including the basal pelagic, landslide and ponded units, representing the sedimentary record preceding, coeval and postponing flexure. Their stacking patterns allow one to understand the flexural history of the oceanic crust reacting to the volcanic load, in space and time. The flexural history of the oceanic crust can be divided into four stages. The first stage is the brittle faulting-assisted flexure reacting to the appearance of the load. It has a short wavelength and controls the development of moat undergoing deposition of the landslide unit. Then follows the long-wavelength flexure, when the arch starts to develop. The flexural arch formation prevents the landslide unit from covering it, while the moat keeps subsiding. The third flexure stage is a short-wavelength deformation when the moat and arch subside together. Accordingly, the syn-flexural landslide unit records an initial rapid and a later slower subsidence. The fourth flexure stage is characterized by the passive infill of moat by sediments of ponded unit, although limited isostatic adjustments can occur, accompanied by mass wasting.

Název v anglickém jazyce

Propagation of hotspot volcanism driven flexure in oceanic crust – 85°E Ridge case study

Popis výsledku anglicky

The study focuses on the flexural down-warping of oceanic crust related to the Early Cretaceous hotspot volcanic chain in offshore East India, drawing from robust reflection seismic coverage of the 85°E Ridge and associated moats and arches. Seismic data image three moat-filling units including the basal pelagic, landslide and ponded units, representing the sedimentary record preceding, coeval and postponing flexure. Their stacking patterns allow one to understand the flexural history of the oceanic crust reacting to the volcanic load, in space and time. The flexural history of the oceanic crust can be divided into four stages. The first stage is the brittle faulting-assisted flexure reacting to the appearance of the load. It has a short wavelength and controls the development of moat undergoing deposition of the landslide unit. Then follows the long-wavelength flexure, when the arch starts to develop. The flexural arch formation prevents the landslide unit from covering it, while the moat keeps subsiding. The third flexure stage is a short-wavelength deformation when the moat and arch subside together. Accordingly, the syn-flexural landslide unit records an initial rapid and a later slower subsidence. The fourth flexure stage is characterized by the passive infill of moat by sediments of ponded unit, although limited isostatic adjustments can occur, accompanied by mass wasting.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10507 - Volcanology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Marine and Petroleum Geology

ISSN

0264-8172

e-ISSN

1873-4073

Svazek periodika

82

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

134-153

Kód UT WoS článku

000398870100009

EID výsledku v databázi Scopus

2-s2.0-85013850273