Stavros Tide pools 🇵🇱 Crete with Alexandra EarthCache
Stavros Tide pools 🇵🇱 Crete with Alexandra
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Tide pool
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Tide pools, or rock pools, are rocky pools on the sea shore which are filled with seawater. Many of these pools exist as separate pools only at low tide.
The oceans' shores are constantly in motion. They are a mixture of both land and sea and never the same from one moment to the next. The boundary between land and sea constantly changes with the tide's rhythmic rise and fall. When the tide retreats, seawater trapped in depressions in the rocks forms tide pools. Tidal pools can be large or small, deep or shallow. Seawater trapped in these depressions may contain flora, fauna or be lifeless.Large pools or smaller puddles left by the drain are formed. In small depressions, seawater may evaporate and sodium chloride settles in the form of a white precipitate. The bottom due to marine eros ion, is usually uneven. With numerous hollows with sharp edges. It was in such places with a rich mineral content and favorable conditions that the earth was raised.
The rocks that make up the tidal pool are of alluvial origin. They were created in the Miocene period. Built of sandstone with a high content of silica. As a result the activity of various factors, in particular marine erosion (waves of waters, tides, sea currents, wind, lowering of the seabed and chemical factors), we can see the degradation processes. We see the removal of large rock masses on the current eastern side of the bay (vide tidal pool). Due to the difference resulting from the hardness of the rocks, the right side is subject to minor erosion. The difference in the amount of rocks is quite significant (about 90 m.) The consequence of these processes is the formation of a bay, a swimming pool and flat sand dunes, which now form the Stavros beach - named Greek Zorbas.
Splash zone
This zone is sprayed with water at high tide and flooded only during storms. Besides, the rocks are exposed to the sun and cold winds.
Zone of high and medium tides
The high tidal zone is flooded every day for a few hours during each tide.
Low tide zone
This zone mostly stays under water. It is exposed during low tide, and longer only during extremely low tide.
Factors that influence the formation of the Tide pool.
A- externally, such as: Tides are created by the gravitational pull of the moon, and a lesser extent of the sun, upon the Earth's oceans. The sun has about the effect that the moon has on Earth's tides. Sea waves, wind, sun and chemical factors.
B- internal, such as: layered construction, rock type (sandstone, limestone)
Questions
1 / List the factors that influence the formation of tide pools ?
2 / In small rock openings, after drying of sea water, we notice a precipitate. Give its chemical name?
3 / Observing places flooded with water, you notice signs of life?
4/Take a look at the surroundings! Can you see erosive processes of rocks? If so, write something about it. Check how much the bottom of this pool has dropped?
Used: from the Internet, Wikipedia
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