scholarly journals Insights of dielectric measurements from cuttings recovered along the deepest offshore well in the world (Nankai trough accretionary prism): IODP expedition 338, site C0002F

2015 ◽  
Vol 2015 (1) ◽  
pp. 1-5
Author(s):  
Lionel Esteban ◽  
Matthieu Cauchefert ◽  
Matthew Josh
Keyword(s):  
Nankai Trough ◽  
Accretionary Prism ◽  
Dielectric Measurements ◽  
The World

Spatiotemporal Characterization of Smectite‐to‐Illite Diagenesis in the Nankai Trough Accretionary Prism Revealed by Samples From 3 km Below Seafloor

2019 ◽  
Vol 20 (2) ◽  
pp. 933-951 ◽  
Author(s):  
A. Hüpers ◽  
G. Grathoff ◽  
L. N. Warr ◽  
K. Wemmer ◽  
G. Spinelli ◽  
...  
Keyword(s):  
Nankai Trough ◽  
Accretionary Prism

Sedimentology and structure of the trench-slope to forearc basin transition in the Mesozoic of Alexander Island, Antarctica

1993 ◽  
Vol 130 (6) ◽  
pp. 737-754 ◽  
Author(s):  
P. A. Doubleday ◽  
D. I. M. Macdonald ◽  
P. A. R. Nell
Keyword(s):  
Sedimentary Rocks ◽  
Accretionary Prism ◽  
Coarse Grained ◽  
Accretionary Complex ◽  
Forearc Basin ◽  
Marine Transgression ◽  
Tectonic Events ◽  
The World ◽  
Basin Formation ◽  
Trench Slope

AbstractThe Mesozoic forearc of Alexander Island, Antarctica, is one of the few places in the world where the original stratigraphic relationship between a forearc basin and an accretionary complex is exposed. Newlydiscovered sedimentary rocks exposed at the western edge of the forearc basin fill (the Kimmeridgian–Albian Fossil Bluff Group) record the events associated with the basin formation. These strata are assigned to the newly defined Selene Nunatak Formation (?Bathonian) and Atoll Nunataks Formation (?Bathonian-Tithonian) within the Fossil Bluff Group.The Selene Nunatak Formation contains variable thicknesses of conglomeratesand sandstones, predominantly derived from the LeMay Group accretionary complex upon which it is unconformable. The formation marks emergence and subsequent erosion of the inner forearc area. It is conformably overlain by the1 km thick Atoll Nunataks Formation, characterized by thinly-bedded mudstones and silty mudstones representing a marine transgression followed by trench-slope deposition. The Atoll Nunataks Formation marks a phase of subsidence, possibly in response to tectonic events in the accretionary prism that are known to have occurred at about the same time.The Atoll Nunataks Formation is conformably overlain by the Himalia Ridge Formation, a thick sequence of basin-wide arc-derived conglomerates. This transition from fine- to coarse-grained deposition suggests that a well-developed depositional trough (and hence trench-slope break) had formed by that time. The Atoll Nunataks Formation therefore spans the formation of the forearc basin, and marks the transition from trench-slope to forearc basin deposition.

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