نتایج جستجو برای: nannofossils

تعداد نتایج: 185  

Journal: :International Journal of Earth Sciences 2021

Abstract The Latest Danian Event (LDE, ~ 62.2 Ma) is characterized by global changes in the carbon cycle as indicated two negative ? 13 C excursions of up to 1‰. These shifts are accompanied a 2–3 °C warming both surface and deep waters based on benthic planktic foraminiferal 18 O measurements, LDE has, thus, been considered so-called hyperthermal event. event lasted for 200 kyr has identified ...

Journal: :Geochemistry Geophysics Geosystems 2022

High-resolution bathymetry and three-dimensional seismic data along the Cocos Ridge reveal a 245 km2 field of ∼1–4 km in diameter seafloor depressions. The depressions are part two-tiered honeycomb pattern. lower-tier have steep faults that truncate strata with chaotic internal reflections consistent sediment collapse into depression. These extend lens shaped interval just above igneous basemen...

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