English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Pacific island arcs typically have a sediment-filled trough or terrace between the trench and island ridge which is separated from the trench by a mid-slope basement high (Karig, 1970). Such a terrace is extremely well developed south of the central Aleutian Arc and has been referred to as the Aleutian Terrace (Nichols and Perry, 1966). Reflection records over the Atka Basin (Figure 1) portion of the Aleutian Terrace show an asymmetric trough with over 2 km of acoustically visible sediments in the north central part of the terrace. A sonobuoy refraction profile near the center of Atka Basin suggests a thick sediment pile (5-8 km) over an oceanic-like crust (6.4 km/sec; Grow, 1972). The structure of the mid-slope basement high which separates such sediment troughs and their adjacent trenches is poorly understood; and Sites 186 and 187 were specifically drilled on the southern edge of the Aleutian Terrace in order to sample the material which forms this basement high.

Implications of Deep Sea Drilling, Sites 186 and 187 on Island Arc Structure