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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Clay minerals, grain sizes, and flux rates of terrigenous sediments in the Lord Howe Rise area provide important information about the Neogene evolution of climate and physical processes in the southwest Pacific region. Temporal variations in these data suggest that the Neogene history of desertification in Australia was controlled by both the northward drift of the Indo-Australian Plate and the buildup of Antarctic ice sheets. Increased aridity, as defined by a distinct decrease in smectite/illite ratios and increased accumulation rates of terrigenous matter, occurred in northern Australia about 13 m.y. ago, expanding to the south during the late Miocene. Periods of maximum aridity coincided with major cooling events near 12, 9, 5, and 3 m.y. ago. Increased eolian sediment supply and intensified atmospheric circulation are inferred from the grain size and flux rates of the terrigenous sediments at Site 591 during the last 4 m.y., that is, about 0.8 m.y. earlier than similar observations recorded in the Northern Hemisphere. An enhanced oceanic intermediate-water circulation is inferred from decreased accumulation rates and a coarsening of both the bulk-sediment and the terrigenous-sediment fraction at Sites 588 and 590 during the last 3 m.y. Volcanic activity increased in the southwest Pacific region during the Miocene (21 to 9 m.y. ago) and in the Quaternary (0.4 m.y. ago).

Siliciclastic Sediments at Sites 588, 590, and 591: Neogene and Paleogene Evolution in the Southwest Pacific and Australian Climate