The sediments located in Heinrich layers contain almost exclusively<u> </u><u>ice</u><u>-</u><u>rafted</u><u> </u><u>detritus</u><u>, known as </u><u>IRD</u><u>.</u>
Heinrich layers are layers of sediment in the North Atlantic. These sediments have consist of high amounts of debris in Foraminiferida shells brought by ice. This composition explains how these layers function as a historical record of major ice releases.
These layers are formed from huge releases of ice of the Hudson Strait ice stream. The North Atlantic cores of sediment found in these layers are badly sorted and lack almost any foraminifera, being composed of primarily ice-rafted detritus (IRD).
These IRDs are described as sediments of no particular size that are carried by floating ice until they are introduced into the water and mix into the environment. This Ice carries debris located within it in the way a raft would carry a person, by allowing it to float on the surface of the water
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2. Zenith, is the correct answer, as a Zenith is a peak “The sun had reached its zenith point on the summer solstice, signifying the exact middle of the year”
Answer:
yeah.people live in everywhere .even in a moon and mars.
<span>Rocks in earth's mantle and crust melt due to extreme temperatures and turn into magma.
Hot magma erupts as lava above earth's surface during a volcanic eruption.
Being exposed to a cooler temperature, the lava starts cooling down quickly.
The lava solidifies into a rock formation with a fine-grained or smooth surface.</span>