Sea Floor Sediment Lithologies

Sea floor sediments instructor guide page 8 of 33 few seconds.

Sea floor sediment lithologies. A virtual map of 2500 marine sites showing the. Explain the distribution of modern marine sediments on their map. Your job is to describe the surficial sea floor distribution of marine sediment types and propose hypotheses to explain the distribution patterns you see. Dutkiewicz a müller r.

Table 2 of the sea floor. The lithology map is accompanied by estimates of the probability of the most probable class which may be interpreted as a spatially explicit measure of confidence in the predictions and. Legend is the same as in figure 1. Terrigenous sediment is derived from land and usually deposited on the continental shelf continental rise and abyssal plain.

Digital map of major lithologies of seafloor sediments in world s ocean basins. Color variations and patterns perhaps textures differences e g large pebble mixed in mud and may will notice. It shows that small shifts in salinity and temperature significantly affect the lithology of seafloor sediment. The purpose of part 3 is to explore empirical data on the distribution of the five primary marine sediment types i e lithologies.

There are three kinds of sea floor sediment. These need to be printed on a color printer or viewed directly on a computer screen or projector. D o callaghan s jónasson h. Terrigenous pelagic and hydrogenous.

Here we created a virtual marine core collection that provides exemplars of the primary ocean sediment lithologies along with links to expedition reports and datasets and tips for making requests for real core samples to use in education. Knowing the patterns of distribution of sediments in the global ocean is critical for understanding biogeochemical cycles and how deep sea deposits respond to environmental change at the sea surface. Census of seafloor sediments in the world s ocean. As deep sea sediments represent the largest carbon sink on earth these shifts need to be considered in the context of global ocean warming.

Seafloor lithologies in the southern ocean showing the antarctic circumpolar current. We present the first digital map of seafloor lithologies based on descriptions of nearly 14 500 samples from original cruise reports interpolated. Accurately predict what the modern sediment lithologies are at other locations on the sea floor e g in the indian ocean. Google earth resource on marine sediments.

Make a map showing the distribution of the primary modern sediment lithologies of the pacific and north atlantic oceans. It is further contoured by strong currents along the continental rise.