Post Profile






Sediment cycling on continental and oceanic crust

Sedimentary rocks are often described as declining in quantity with increasing age due to the cumulative effects of crustal deformation and erosion. One important implication of such a model is that the geological record becomes progressively less voluminous and less complete with increasing age. Here we show that the predictions of a model in which the destruction of sedimentary rock is the predominant process signal are borne out only among sediments deposited on oceanic crust and among sediments deposited above sea level in non-marine environments.
read more

share

Related Posts


Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches

Biology / Marine Biology : Ocean Acidification

To understand how ocean acidification (OA) influences sediment microbial communities, naturally CO2-rich sites are increasingly being used as OA analogues. However, the characterization of these naturally CO2-rich sites is often lim...

Tectonic settings of continental crust formation: Insights from Pb isotopes in feldspar inclusions in zircon

Academics / Geology : GeoScienceWorld

Most crustal rocks derive from preexisting crust, and so the composition of newly generated (juvenile) continental crust, and hence the tectonic settings of its formation, have remained difficult to determine, especially for the fir...

Simulated effect of deep-sea sedimentation and terrestrial weathering on projections of ocean acidification

Biology / Marine Biology : Ocean Acidification

Projections of ocean acidification have often been based on ocean carbon cycle models that do not represent deep-sea sedimentation and terrestrial weathering. Here we use an Earth system model of intermediate complexity to quantify ...

Impacts of ocean acidification on sediment processes in shallow waters of the Arctic Ocean

Biology / Marine Biology : Ocean Acidification

Despite the important roles of shallow-water sediments in global biogeochemical cycling, the effects of ocean acidification on sedimentary processes have received relatively little attention. As high-latitude cold waters can absorb ...

Hillslope diffusion

Academics / Geology : Hindered Settling

Modeling erosion and deposition of sediment using the diffusion equation is among the important subjects that are usually omitted from sedimentary geology textbooks. Part of the reason for this is that ‘conventional’ sedimentary geo...

Comments


Copyright © 2016 Regator, LLC