Sea Floor Sediment Lithologies

Census of seafloor sediments in the world s ocean.

Sea floor sediment lithologies. Legend is the same as in figure 1. 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. D o callaghan s jónasson h. 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. Table 2 of the sea floor. Terrigenous pelagic and hydrogenous. We present the first digital map of seafloor lithologies based on descriptions of nearly 14 500 samples from original cruise reports interpolated.

Make a map showing the distribution of the primary modern sediment lithologies of the pacific and north atlantic oceans. The purpose of part 3 is to explore empirical data on the distribution of the five primary marine sediment types i e lithologies. A new digital map of the spatial distribution of seafloor lithologies in the deep sea below 500 m water depth is presented to address this shortcoming. Dutkiewicz a müller r.

Your job is to describe the surficial sea floor distribution of marine sediment types and propose hypotheses to explain the distribution patterns you see. A virtual map of 2500 marine sites showing the. Seafloor lithologies in the southern ocean showing the antarctic circumpolar current. Terrigenous sediment is derived from land and usually deposited on the continental shelf continental rise and abyssal plain.

The dataset presents the first digital map of seafloor lithologies based on descriptions of nearly 14 500 samples from original cruise reports interpolated using a support vector machine algorithm. 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. Accurately predict what the modern sediment lithologies are at other locations on the sea floor e g in the indian ocean. Digital map of major lithologies of seafloor sediments in world s ocean basins.

Explain the distribution of modern marine sediments on their map. Google earth resource on marine sediments. It shows that small shifts in salinity and temperature significantly affect the lithology of seafloor sediment. As deep sea sediments represent the largest carbon sink on earth these shifts need to be considered in the context of global ocean warming.

Sea floor sediments instructor guide page 8 of 33 few seconds. More detailed views of major ocean basins and percentage estimates of lithologies are given in figures dr4b dr4e and table dr1 see footnote 1.