Results 241 to 250 of about 203,767 (309)

Enrichment of organic carbon in a deep‐water sand‐prone turbidite system: A study from the Eocene Aínsa Basin (Spanish Pyrenees)

open access: yesSedimentology, EarlyView.
ABSTRACT Dilute sediment gravity flows transporting fine‐grained sediments such as silt or clay in suspension are thought to be the principal carriers of organic carbon into the deep sea. However, observations from submarine fan datasets show that plant debris can also be accumulated in a range of coarser (sandy) facies, which suggests that organic ...
Yvonne Therese Spychala   +4 more
wiley   +1 more source

Sedimentary record of submarine gravity‐flow events in the southern Ryukyu forearc during the last 200 000 years: archive of mega‐earthquakes and tsunamis

open access: yesSedimentology, EarlyView.
ABSTRACT Despite high convergence velocity, the southern Ryukyu subduction has relatively low and sparse instrumental seismicity, in contrast with the Yaeyama Islands, hit by huge tsunamis over the last few thousand years. This study explores the potential of deep marine sediments to record past large earthquakes and tsunamis.
Nathalie Babonneau   +52 more
wiley   +1 more source

Intermittent Brittle and Ductile Deformation as Recorded by Dating of Ultramylonites and Pseudotachylytes in Extending Continental Crust (Ivrea‐Verbano Zone, Italy)

open access: yesTerra Nova, EarlyView.
ABSTRACT Mylonites and pseudotachylytes play a crucial role in defining the rheology of extending continental crust. In this context, determining the age of brittle‐ductile deformation is fundamental to understanding the rifting evolution stages. Here, we investigate the Premosello Shear Zone, an extensional structure of the Ivrea‐Verbano lower crust ...
Stefania Corvò   +3 more
wiley   +1 more source

Orogenward Migration of the Flexural Forebulge: A Response to Increased (Sub)surface Loading in the Orogenic Core?

open access: yesTerra Nova, EarlyView.
ABSTRACT The flexural profile of a foreland basin is controlled by lower plate strength and the magnitude of (sub)surface loads. Assuming that lower plate strength remains largely constant during flexure, changes in the flexural profile hint at reorganisations of (sub)surface loading.
Lucas H. J. Eskens   +2 more
wiley   +1 more source

New Geochronological Constraints on the Late Palaeozoic Tarija Basin, Southern Bolivia: Tectonic and Palaeoclimatic Implications

open access: yesTerra Nova, EarlyView.
ABSTRACT The Carboniferous‐Permian Tarija basin of southern Bolivia evolved under major tectonic and climatic influence. The timing of transition from glacially influenced to arid conditions, after the Gondwanide tectonic event, has been based mainly on palynological correlations.
Felipe R. Ferroni   +4 more
wiley   +1 more source

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