Bradley N. Opdyke

TL;DR: A coral reef represents the net accumulation of calcium carbonate (CaCO3) produced by corals and other calcifying organisms, and if calcification declines, then reef-building capacity also declines.

TL;DR: The Cismon core as discussed by the authors is a reference section for the Barremian-Aptian at low latitudes, containing both a complete carbonate and organic carbon record through the critical black shale intervals.

TL;DR: It is suggested that sea-level change shifts the locus of carbonate deposition from the deep sea to the shelves as the normal glacial-interglacial pattern of deposition for Quaternary global carbonates, and a simple numerical simulation of the global carbon cycle was developed.

TL;DR: In this paper, the authors measured boron isotopic compositions in a ∼300-year-old massive Porites coral from the southwestern Pacific and found large variations in pH over ∼50-year cycles that covary with the Interdecadal Pacific Oscillation of ocean-atmosphere anomalies, suggesting that natural pH cycles can modulate the impact of ocean acidification on coral reef ecosystems.

TL;DR: In this paper, three cores (MV-33, MV-66 and MD-40) collected in the central part of Pandora Trough (Gulf of Papua) have been analyzed, and they reveal a detailed sedimentary pattern at millennial timescale Siliciclastic turbidites disappeared during the Bolling-Allerod and Preboreal intervals to systematically reoccur during the Younger Dryas interval.