Tag Archives: Ocean
Jurassic drop in ocean oxygen lasted a million years
Dramatic drops in oceanic oxygen, which cause mass extinctions of sea life, come to a natural end — but it takes about a million years. Paleontology News — ScienceDaily
Massive, computer-analyzed geological database reveals chemistry of ancient ocean
A study that used a new digital library and machine reading system to suck the factual marrow from millions of geologic publications dating back decades has unraveled a longstanding mystery of ancient life: Why did easy-to-see and once-common structures called … Continue reading
Silicon and zinc biogeochemical cycles coupled through the Southern Ocean
Nature Geoscience 10, 202 (2017). doi:10.1038/ngeo2890 Authors: Derek Vance, Susan H. Little, Gregory F. de Souza, Samar Khatiwala, Maeve C. Lohan & Rob Middag Nature Geoscience – Issue – nature.com science feeds
Iron deep in the ocean can travel 2,500 miles
While many areas of the ocean are rich in other nutrients, they often lack iron—a critical element for marine life. Dissolved iron in seawater can originate from three main sources: dust from the atmosphere, sediment dissolution along continental margins, and … Continue reading
Biotic and abiotic retention, recycling and remineralization of metals in the ocean
Nature Geoscience 10, 167 (2017). doi:10.1038/ngeo2876 Authors: Philip W. Boyd, Michael J. Ellwood, Alessandro Tagliabue & Benjamin S. Twining Nature Geoscience – Issue – nature.com science feeds
Biogeochemistry: Deep ocean iron balance
Nature Geoscience 10, 162 (2017). doi:10.1038/ngeo2908 Author: William B. Homoky Dissolved iron is mysteriously pervasive in deep ocean hydrothermal plumes. An analysis of gas, metals and particles from a 4,000 km plume transect suggests that dissolved iron is maintained by … Continue reading
Video: Massive lava stream exploding into ocean in Hawaii
This Jan. 29, 2017 photograph offered by the D.J. Geological Survey exhibits a lava stream pouring out of a tube on the ocean cliff on the Kamokuna ocean entry on the Hawaii Volcanoes National Park on the Big Island of … Continue reading
A rusty inexperienced early ocean?
How have been Earth’s strong deposits of iron ore created? One researchers means that, billions of years in the past, “inexperienced rust” shaped in seawater and sank to the ocean mattress, turning into an unique supply of banded iron formations. … Continue reading
Constraints on ocean carbonate chemistry and pCO2 in the Archaean and Palaeoproterozoic
Nature Geoscience 10, 41 (2017). doi:10.1038/ngeo2844 Authors: C. L. Blättler, L. R. Kump, W. W. Fischer, G. Paris, J. J. Kasbohm & J. A. Higgins Nature Geoscience – Issue – nature.com science feeds
A new plate boundary is forming beneath the Indian Ocean
Newly formed fracture in Indian Ocean tectonic plate may trigger quakes in future Newly formed fracture in Indian Ocean tectonic plate may trigger quakes in future A new plate boundary appears to be forming in the region of the Indian … Continue reading