Diatoms calcium hydrogen carbonate skeletal material these things are probably ending up predominantly as deep sea sediments pelagic sediments, yeah, remember?

It is harder to be specific and accurate but δ O18 measurements in age-dated deep sea sediments going back 100 million years indicates a general cooling trend since mid-Cretaceous.

Coccolithophores are a major contributor to the carbonate in deep sea sediments.

These subduction zones are thought to carry down all manner of crustal material, including fossils, sea sediments and clays eroded from nearby continents.

The Black Mountains consist primarily of Precambrian gneiss and schists formed over a billion years ago from primordial sea sediments.

Limestone is a remnant of ancient sea sediment.

This explains the high rate of nutrient turnover in deep sea sediments.

Replacement of deep sea sediments precipitates, that has been formed in place on the ocean floor.

Streptomyces griseus strains have been isolated from various ecologies, including stell waste tips, rhizosphere, deep sea sediments and coastal beach and dune sand systems.

Marine bacteriophages play an important role in cycling nutrients in deep sea sediments.